From a bike fit perspective, is there any difference between a setback seatpost with a saddle pushed forward relative to the post, and a 0 setback seatpost with the saddle pushed back relative to the post? #askgcntech
I was lucky enough to have Calvin as a mentor when I was young and learning to work on bikes. Before college, I asked for a tool box. He gave me a tool box full of tools and told me to help other people. Since then, I’ve never turned down a friendly request to help with bike issues. Thanks, Calvin, for the tool box and wisdom too.
Thanks so much for hosting Calvin and such a fun content collaboration John! For all you comment readers: To see more instructional Repair Help videos with Calvin check out the Park Tool TH-cam Channel th-cam.com/users/parktool
It’s funny, Calvin and I entered the bike tech world in a similar manner. When I was in college I bought a road bike. Prior to college, I raced motorcycles and could take apart a motorcycle with my eyes closed. When I entered college money was tight and I had to give up motorcycle racing. I purchased a road bike in order to feed my love for two wheels. When I got my road bike I realized I had no idea how to work on it which was frustrating because bicycles are, to the unknowing, simple machines. I became close with the manager of my LBS from shop rides and coming in for maintenance. One day I asked if I could hang out in my spare time and watch the techs wrench on bikes to learn some basics to keep me on the road. After some time I asked if I could try adjusting gears and changing housing and such. I got to the point I would go in and they would allow me to work on building new bikes. After a bit longer they allowed me to wrench on customer bikes. One day they had a tech leave and the shop owner said since I spend so much time there how about he start paying me for my work. I worked as a bike tech all throughout college. Now, on group rides, if anyone has a technical I’m the guy who stops and helps riders get repaired and back on the ride. Dang I love this sport!
That was absolutely amazing, the best GCN video ever and there's some really strong competition. He's such an amazing bloke, that video could have gone on for hours and I wouldn't have been able to switch it off, thank you so much for making it happen!!!
Hi Jon, Could you help me? I was wondering if it would be possible to use a Shimano Alfine Di2 road shifter set with an Ultegra RX800 Di2 rear derailleur and a 1x11 transmission. I'm not sure if the Ultegra Di2 set up will work without a front derailleur, and I'd like to know before investing any money in it. If you're unsure about which shifters, it's these ones: www.bikeradar.com/news/article/shimano-alfine-di2-first-pictures-33229/ Thanks very much. #AskGCNTech
One problem with this video, it was too short, I could listen to you two for hours with this way of giving advise it was fun and informative thank you both.
I haven’t even watched this yet and this must be like when Bowie and Queen collaborated. Not saying who is who but one is blonde and the other has an awesome ‘tache
The song was "Under Pressure" I'm sure there's some re-writing of the lyrics possible.. Something like "under correct torque" or, dare I say it, something to do with tyres...
Instant classic! Loved the video and Calvin’s approach to cycling. I think the best upgrade I can afford right now it’s to get more into bike mechanics to be able to help others!
OMG!!!!!! First its Seth at Park Tool and now its Calvin at GCN.... and worse still he's doing real science.... nnnnnnnnnnnoooooooooooo - yer not allowed to do real science on GCN - apart from Emma cause she's got a real Phd and in engineering no less and does wonderous things with porridge.
That was the one! The one the only Calvin Jones. Learned so much on bb's in that clip alone. Thanks John for having Calvin over, delighted for you, as you are clearly one of his #1 fans. Its all about the learning and the help you can pass on to others. Thanks guys.
#askGCNTech I'd like to know if it's possible to use a 52 /34 chainring combination. I find sometimes the 50d big ring I use is a bit short for me but I' would like to keep the 34 because I have a 10 speed real derailleur. Being a 78kg guy I take advantage of the small 34 ring to climb steep mountains
I think I have learned more useful bike wrenching from Calvin's PT videos than all the other references and videos put together. Great job getting him on Jon!!!
Calvin is really cool/quirky guy. The best type of person to learn from. Reminds me of a modern studies teacher I had at school. You tend to remember what these guys teach you, they are natural story tellers.
Absolutely love Calvin Jones, sense of humor is phenomenal. I don't mind paying Park Tool prices just so the can keep him around. (Dont think you can markup GCN products now that you've featured him)
Leave it to The Man to get me to do a self inventory when it comes to what to pack with me on rides. It really is fantastic to see someone so well matched between his passion of learning and teaching to his position at Park Tool.
hello Sir, when I tried Allen key to adjust my handlebar and adjustable stem, the bolts did not move at all! is it might be due to over tightening of bolt by bike shop mechanic? #askGCNTech
I always enjoy the show but this was a very, very enjoyable episode. Calvin has a good sense of humour....and the look on John's face looking at him throughout the video....looks like he's in awe (or in love, it could be either!!). Well done chaps, keep up the good work!
#askgcntech if I manage to drip lube over my Tim brake track on my wheel when lubing my chain, what is the best way to clean that rim track to remove any contamination?
Hi could anyone help me please I’ve got a boardman mx sport for commuting and would like to replace wheels with stronger wheels. What are MY options? What can fit this bike.
Enjoyed the video for entertainment purposes. Calvin reminds me of my late brother Kevin. My brother was once described by another brother as, "Kevin does not speak to convey information; Kevin speaks to invoke an emotional response". Good reminder of a good friend. Thanks so much!
Calvin thanks for the great videos you got me thinking about 1 x system now do you haven't been a quick advise and source for parts, I have Trek checkpoint 4 with 2 x 10 Tiagra. What is the best option to try 1x , thanks in advance
Amazing edition of GCN Tech Clinic! It's amazing to have Calvin Jones in the studio! This is without any doubt, my favourite edition of GCN Tech Clinic. Chapeau to Jon and Calvin.
Disc probes but want the calliper in the same position. solution shim the axle then re-dish the wheel to centre a touch job done. but don't forget if you add to one side U need to subtract from the other and you may need to work on both sets of wheels I feel your pain I've been there. (cx racer) costs pennies but is a painful process 😉
#askGCNTech I'm looking at getting some new gravel tyres for my CX bike for use off road/winter commuting, and I'm trying to ascertain whether they'll fit in my frame. I couldn't find anything online with clear maximum tyre clearances. I'm going to measure up and work out what'll fit or not, but are there any general rules around leaving extra space for mud clearance? (e.g. always at least 6mm extra for mud clearance) For reference it's a boardman CX comp 2014 and I'm looking at either a 40mm WTB nano, or a 42mm WTB Resolute
*I love Calvin Jones!!!* Many years ago, after my local bike shop ruined the bottom bracket on my 1985 Fuji road bike, I decided it was time to learn how to service my bike, myself. My first step was to find a good bike repair manual. I purchased "the best" -- Calvin's venerable "Blue Book" for Park Tools. I still keep the 1st and 2nd editions handy. Thank you Calvin!!! The first edition of your repair manual was a "game changer" for me!
Thank you, Calvin, for the smile over the sticker hack. Last year outside a local antique store, a weathered bike was for sale and it was nothing special, just an old Sears bike or something, but its frame was adorned with about 15 random, oval stickers--STP stickers. And it was so authentic to its day, when American kids stuck stickers on their bikes. And, let's face it, an STP sticker was the best way to make your bike fast like a racing car.
#askGCNTech last week I replaced the worn disc pads on evolution calipers. I forced back the pistons as far as they would go in, but with the new pads in there was no way the wheel was going back in. There wasn't enough room for the disc. After much manhandling and damage to the new pads, I released the bleed screw on the caliper and let out 5 or so mls of brake fluid. The pistons then pushed back in far enough to allow the wheel to go on. How did they get the wheel on when the calipers were new (before I wore them out)?
Great video Jon! I met Calvin at Interbike in Vegas last year...funny how so many people don't know who he is,.. but my garage is a mechanics workshop now and I build all sorts of bike thanks to him! keep these awesome vids coming!
#askGCNTech Hi there, Upgrading RS685 shifters to the new R8020 shifters to work with BR-RS785 post mount calipers. Are they both compatible and if so do I need anything in particular to install the bh90 hose to caliper? Any help is appreciated as googling has too much contradicting information... Arghh! ;)
Man this was just great stuff all the way through! Some bits I understood and learnt from and other bits, well.....I don't even know where the part is located on the bike. Thanks as always GCN.
Enjoy seeing Calvin spreading his knowledge and humor across the globe. I spent time in the ‘80’s wrenching at bench alongside Calvin. (Old Town Bike Shop in Colorado Springs, Colorado). When my customers nowadays ask where to learn some bike mechanic tips, I send them to the Park Tool website, mostly because of Calvin.
Hey Jon, I have a CeramicSpeed external bottom bracket (on a steel frame road bike) that's rattling/clicking anytime I ride at 300+ watts. The bottom bracket has approx. 3000 miles on it. Should I regrease the bearings? Or is it something worse? Thanks! #askGCNtech
#askGCNTech - how much flex/play is normal in a bearing set on the rear wheel ? i have a HED Ardennes wheelset on a cannondale synapse and can move the wheel a bit from side to side which can create brake rub . i’ve had 3 separate mechanics look at it each with different approaches. some say it’s normal and i should have flex , others say i need to tighten things like the quick release mech . any thoughts ? thanks !
#askGCNTech Hi John, I have got a fullultegra R8000 groupset on my Trek Emonda with a short cage rear derailleur. Is it possible to fit a 11-32T cassette on it without swapping to a medium cage derailleur?
Calvin is brilliant. I couldn’t tell you how many times I have referenced his videos over on the Park Tool network. I was totally pumped seeing my two favorite cycling channels on TH-cam meet up. Looking forward to the next one!
Regarding setting up 2 sets of wheels to work without having to realign brake calipers…why not shim one rotor? Have seen this suggestion in many other places, and tried it myself. I have not yet exploded into a ball of flames, but I’m the first to admit there’s a lot I don’t know. Nevertheless, I can now swap my wheels with ease. Actually they’re the same hubs, and they STILL don’t both align perfectly without one being shimmed.
Hi there ~ I'm ''Old School'' and i'd prefer a Cup & Bearings to sealed BB, because any problems i can then remove, clean, and replace ... how do i change my bottom bracket ?
This is very inspiring. Like Mr.Jones said he did not got the degree but instead pursued his passion. Kudos to you sir. I have learned a lot from you by watching the Parks Tool / GCN channel. Kudos also to Jon. More power to your channels.
I torque everything. Especially on anything carbon. Metal will usually deform, carbon will crack. Get a torque wrench and look at the owners manual for the torque specs.
Greait show! and my problem is: my tyres dont place even round the rim, at some place the bid dont go right into the groove of the rim - it stack something 1 or 2mm below right position (talking about clincher) so when you spin the wheel there is some shalow place and while riding it gives some vibrations. Lube like liquid sope or vaseline doesnt help, tryed inflate to max - doesnt help. It happens with shcwalbe range cruiser 37mm and panaracer rimbo 32mm on 28mm wide rim. Spent 2 hours with panarecer before iron man 70.3 to get it right at last. But when i switch back to shcwalbe after another 2 hours of swearing can get even and smooth spins, still bid doesnt want to go at the right spot. For 10 yers of bike maintanens it hapens first time. The rim is axis elite disc on Specialized Diverge Elite DSW.
I am a bicycle mechanic syce 2000 started at Hungary now I am at Lowestfoft Engalnd, What I see that there is a smal amount of real bike specialist/mechanic because no qualification need for the job and also underpaid. I stick with it because is part of my life this is my passion. Do you thing that there is any chance to push out the junk from the industrie like Halfords/Cyclerepublic "mechanics" who are don't know what they doing at all ? (it is Halford faults not the "mechanics" who are try to work there. there is no training at all etc) Sorry for the crappy english :D
Hi John. I’ve recently had a new KTM Lisse with Ultegra Di2 shifting and love how crisp the shifting is however, when in the lowest gear (little ring on the front and largest sprocket at the back) the chain pops off the sprocket effectively changing gear by itself. I have tried to micro adjust the rear derailleur but this causes excessive chain rub and does not solve the problem. Any ideas? Thanks Ryan. #askGCNTech
#askGCNTech Since autumn officially starts this month and bad weather 'll come with it. I'm looking at smart trainers (direct drive), preferably below 1000 euro's. I have many questions at this moment, do they all support my campa groupset? What would be a good one to join swift? What are other software options to get a nice visual immersive experience?
#askGCNtech can you explain the different STI positions over the generations? For example i cant seem to get my 105 5600 shifters in the same position as the 5700. They allways angle upward. Is there a fix for that or did the ergonomics and position just change over time? Huge thanks
Most of my bikes are from the 70’s to the 90’s. I’m just getting into home bicycle repairs for myself. Do you have a bicycle tool set that you have for these year bicycles? If not what do you recommend? Thank you.
Thanks for joining us Calvin! Make sure you leave your questions for the GCN Tech Clinic next week using the hashtag #askGCNTech
From a bike fit perspective, is there any difference between a setback seatpost with a saddle pushed forward relative to the post, and a 0 setback seatpost with the saddle pushed back relative to the post? #askgcntech
cool!!
Calvin and Jon - The Odd Couple. :)
USA! USA! USA!
This is one of the best vid so far! Please do more collab with the industry's big names and mechanics!
I was lucky enough to have Calvin as a mentor when I was young and learning to work on bikes. Before college, I asked for a tool box. He gave me a tool box full of tools and told me to help other people. Since then, I’ve never turned down a friendly request to help with bike issues. Thanks, Calvin, for the tool box and wisdom too.
Are u in the NJ area?? 😅
Thanks so much for hosting Calvin and such a fun content collaboration John!
For all you comment readers: To see more instructional Repair Help videos with Calvin check out the Park Tool TH-cam Channel th-cam.com/users/parktool
A pleasure. P. S. It's Jon without the "h" 😉
So sorry JON! We owe you a new IB! Interbike?
@@parktool hi, no interbike for me I'm afraid. A shame, it's 10years since I went last.
It’s funny, Calvin and I entered the bike tech world in a similar manner. When I was in college I bought a road bike. Prior to college, I raced motorcycles and could take apart a motorcycle with my eyes closed. When I entered college money was tight and I had to give up motorcycle racing. I purchased a road bike in order to feed my love for two wheels. When I got my road bike I realized I had no idea how to work on it which was frustrating because bicycles are, to the unknowing, simple machines. I became close with the manager of my LBS from shop rides and coming in for maintenance. One day I asked if I could hang out in my spare time and watch the techs wrench on bikes to learn some basics to keep me on the road. After some time I asked if I could try adjusting gears and changing housing and such. I got to the point I would go in and they would allow me to work on building new bikes. After a bit longer they allowed me to wrench on customer bikes. One day they had a tech leave and the shop owner said since I spend so much time there how about he start paying me for my work. I worked as a bike tech all throughout college.
Now, on group rides, if anyone has a technical I’m the guy who stops and helps riders get repaired and back on the ride. Dang I love this sport!
"Be proud of your scars!" - it's something like "It's not the age, its the mileage!"
It's not the mileage, it's condition :)
I'm still shaking at the fact I met, the man, the myth, the legend, the Messiah, Calvin "Moustache" Jones
Brilliant stuff.
That was absolutely amazing, the best GCN video ever and there's some really strong competition. He's such an amazing bloke, that video could have gone on for hours and I wouldn't have been able to switch it off, thank you so much for making it happen!!!
Bwahahaha!! This guy is amazing!!! Do have him back on in the future.
Great video! So much fun watching this.
Hi Jon,
Could you help me? I was wondering if it would be possible to use a Shimano Alfine Di2 road shifter set with an Ultegra RX800 Di2 rear derailleur and a 1x11 transmission. I'm not sure if the Ultegra Di2 set up will work without a front derailleur, and I'd like to know before investing any money in it.
If you're unsure about which shifters, it's these ones: www.bikeradar.com/news/article/shimano-alfine-di2-first-pictures-33229/
Thanks very much. #AskGCNTech
One problem with this video, it was too short, I could listen to you two for hours with this way of giving advise it was fun and informative thank you both.
I haven’t even watched this yet and this must be like when Bowie and Queen collaborated. Not saying who is who but one is blonde and the other has an awesome ‘tache
hahaha brilliant!
The song was "Under Pressure" I'm sure there's some re-writing of the lyrics possible.. Something like "under correct torque" or, dare I say it, something to do with tyres...
Or like Bowie and Bing Crosby doing Little Drummer Boy?
Bob Maulucci err, no. Freddie Mercury had a large ‘tache.
Just watching John becoming flabbergasted by all this new knowledge and language is too much. Also, Calvin is hilarious
Calvin: grease the crickets
Best. GCN. Video. Ever! Please bring him back again.
I wish I knew 1% of what Calvin has forgotten about bikes.
So... nothing at all?
Finally a pro-scratches guy! I like the scratches on my bike, they remind me of all the good times we had together over the years
"All body types are welcome here...for the most part".. Ha!! LMAO.
Oh man, I wasn't expecting to see my question actually on the show 😂🤣😂
Killer answer though 👍🏻
Calvin is Classic! He used to be a mechanic at the Olympic training center at Colorado Springs when I was an athlete there! Great show!
Instant classic!
Loved the video and Calvin’s approach to cycling. I think the best upgrade I can afford right now it’s to get more into bike mechanics to be able to help others!
Calvin is a really knowledgeable character and a gem.
Who else is gonna go check for a wear mark on their rim?
We came for the tech, we got the laughs
Fantastic video Calvin is a legend
The best Tech Clinic ever.
Thanks for taking my question, the Bottom Bracket is a entirely different dimension. Thank GCN and Clavin for offering some wisdom.
OMG!!!!!! First its Seth at Park Tool and now its Calvin at GCN.... and worse still he's doing real science.... nnnnnnnnnnnoooooooooooo - yer not allowed to do real science on GCN - apart from Emma cause she's got a real Phd and in engineering no less and does wonderous things with porridge.
Geomechanics?
That was the one! The one the only Calvin Jones. Learned so much on bb's in that clip alone. Thanks John for having Calvin over, delighted for you, as you are clearly one of his #1 fans. Its all about the learning and the help you can pass on to others. Thanks guys.
Epic!! Not only on bike tech but on philosophy and humor. Loved it!!!
it'd be great if we could check in with calvin every month or two. he's a gem. thanks!
We are not worthy. My bike runs as well as it does because of Calvin. (With some help from GCN)
I've loved Park Tools' videos with Calvin as an educator. I didn't know he was so funny with a good personality!
Calvin's dry humor cannot be surpassed. Excellent fun video. 👍🏼👍🏼👍🏼
Mustache doping... Best video I have seen in some time. Thank you.
Someone get Calvin into a Vermont state trooper uniform right meow.
(really enjoyable video too, a whole different persona to regular GCN Tech vids)
I've watched a few Park Tool's tutorials, but after watching this gem, I'll correct my initial mistake and subscribe to their channel too.
#askGCNTech
I'd like to know if it's possible to use a 52 /34 chainring combination. I find sometimes the 50d big ring I use is a bit short for me but I' would like to keep the 34 because I have a 10 speed real derailleur. Being a 78kg guy I take advantage of the small 34 ring to climb steep mountains
I think I have learned more useful bike wrenching from Calvin's PT videos than all the other references and videos put together. Great job getting him on Jon!!!
Thanks John well done a couple great blokes talking about tools and bikes with the odd joke thrown in . Made my day.
Sir, your bar tape wrapping video changed my life. God bless you and your moustache.
Just ride the bike. Best advice ever.
I'm just going to watch this on repeat 😁👍
Please come back soon Calvin 🙏
Calvin is really cool/quirky guy. The best type of person to learn from. Reminds me of a modern studies teacher I had at school. You tend to remember what these guys teach you, they are natural story tellers.
I love this guy!!! Have him on again in the future please!!
Absolutely love Calvin Jones, sense of humor is phenomenal. I don't mind paying Park Tool prices just so the can keep him around. (Dont think you can markup GCN products now that you've featured him)
Yay Calvin!
Leave it to The Man to get me to do a self inventory when it comes to what to pack with me on rides. It really is fantastic to see someone so well matched between his passion of learning and teaching to his position at Park Tool.
AWESOME. Calvin on GCN... I would never have expected to be so lucky. My bike mechanic geek level is officially maxing out.
I didn’t want this segment to end. Hope there’s more to come with Calvin!
hello Sir, when I tried Allen key to adjust my handlebar and adjustable stem, the bolts did not move at all! is it might be due to over tightening of bolt by bike shop mechanic? #askGCNTech
Really enjoyed this video, thanks Jon and Calvin.
Thanks Adrian
I always enjoy the show but this was a very, very enjoyable episode. Calvin has a good sense of humour....and the look on John's face looking at him throughout the video....looks like he's in awe (or in love, it could be either!!). Well done chaps, keep up the good work!
I always knew Calvin was a master, from this video I now know that he is a lovely human being.
I'm at 00:01 and the thumb up button is just not enough
#askgcntech if I manage to drip lube over my Tim brake track on my wheel when lubing my chain, what is the best way to clean that rim track to remove any contamination?
Hi could anyone help me please I’ve got a boardman mx sport for commuting and would like to replace wheels with stronger wheels.
What are MY options?
What can fit this bike.
Great show and I'd love to see Calvin on more episodes.
Enjoyed the video for entertainment purposes. Calvin reminds me of my late brother Kevin. My brother was once described by another brother as, "Kevin does not speak to convey information; Kevin speaks to invoke an emotional response". Good reminder of a good friend. Thanks so much!
Calvin thanks for the great videos you got me thinking about 1 x system now do you haven't been a quick advise and source for parts, I have Trek checkpoint 4 with 2 x 10 Tiagra. What is the best option to try 1x , thanks in advance
Just converted my ALR5 to 1x. Had 2x11 ‘105’. I bought Ultegra RX & Wolftooth DM, SLX 11-42t for rear and an absoluteBLACK chainring upfront.
Amazing edition of GCN Tech Clinic!
It's amazing to have Calvin Jones in the studio! This is without any doubt, my favourite edition of GCN Tech Clinic. Chapeau to Jon and Calvin.
Disc probes but want the calliper in the same position. solution shim the axle then re-dish the wheel to centre a touch job done. but don't forget if you add to one side U need to subtract from the other and you may need to work on both sets of wheels I feel your pain I've been there. (cx racer) costs pennies but is a painful process 😉
#askGCNTech I'm looking at getting some new gravel tyres for my CX bike for use off road/winter commuting, and I'm trying to ascertain whether they'll fit in my frame. I couldn't find anything online with clear maximum tyre clearances. I'm going to measure up and work out what'll fit or not, but are there any general rules around leaving extra space for mud clearance? (e.g. always at least 6mm extra for mud clearance)
For reference it's a boardman CX comp 2014 and I'm looking at either a 40mm WTB nano, or a 42mm WTB Resolute
Calvin is a legend in our house, when im in the S H 1 T just call Calvin👍✔✔✔✔✔👍
What a character! Thank you for this gem.
Awesome bloke funny, informative and a great ambassador. Park tools have got me now.
Great guy! 👍
When I want to know how to do something I go to Park Tool TH-cam Channel. Place to go.
*I love Calvin Jones!!!* Many years ago, after my local bike shop ruined the bottom bracket on my 1985 Fuji road bike, I decided it was time to learn how to service my bike, myself. My first step was to find a good bike repair manual. I purchased "the best" -- Calvin's venerable "Blue Book" for Park Tools. I still keep the 1st and 2nd editions handy. Thank you Calvin!!! The first edition of your repair manual was a "game changer" for me!
When you pull back the curtain in the Wizard of Oz....you find Calvin!
Thank you, Calvin, for the smile over the sticker hack. Last year outside a local antique store, a weathered bike was for sale and it was nothing special, just an old Sears bike or something, but its frame was adorned with about 15 random, oval stickers--STP stickers. And it was so authentic to its day, when American kids stuck stickers on their bikes. And, let's face it, an STP sticker was the best way to make your bike fast like a racing car.
Calvin seemed quite attached to that Zipp wheel... have you checked to see if it has mysteriously vanished? 😉
Being from Minnesota he's probably prefers Hed wheels! Both shops are not to far from each other!
#askGCNTech last week I replaced the worn disc pads on evolution calipers. I forced back the pistons as far as they would go in, but with the new pads in there was no way the wheel was going back in. There wasn't enough room for the disc. After much manhandling and damage to the new pads, I released the bleed screw on the caliper and let out 5 or so mls of brake fluid. The pistons then pushed back in far enough to allow the wheel to go on. How did they get the wheel on when the calipers were new (before I wore them out)?
This is like the youtube bike world version of The Jetsons meeting the Flinstones
Great video Jon! I met Calvin at Interbike in Vegas last year...funny how so many people don't know who he is,.. but my garage is a mechanics workshop now and I build all sorts of bike thanks to him! keep these awesome vids coming!
John's down? "Drop the hammer baby - lets go!..........more priceless stuff from the legend himself Calvin
Wow!! John and Calvin! How did I miss this one!!! Two Great Bike Techs
Great video with good advice. Calvin certainly is a character with great skills. Hope he comes back soon.
#askGCNTech Hi there, Upgrading RS685 shifters to the new R8020 shifters to work with BR-RS785 post mount calipers. Are they both compatible and if so do I need anything in particular to install the bh90 hose to caliper? Any help is appreciated as googling has too much contradicting information... Arghh! ;)
Man this was just great stuff all the way through! Some bits I understood and learnt from and other bits, well.....I don't even know where the part is located on the bike. Thanks as always GCN.
Calvin is a legend! The amount of knowledge he has is just unbelievable.
Enjoy seeing Calvin spreading his knowledge and humor across the globe. I spent time in the ‘80’s wrenching at bench alongside Calvin. (Old Town Bike Shop in Colorado Springs, Colorado). When my customers nowadays ask where to learn some bike mechanic tips, I send them to the Park Tool website, mostly because of Calvin.
Hey Jon, I have a CeramicSpeed external bottom bracket (on a steel frame road bike) that's rattling/clicking anytime I ride at 300+ watts. The bottom bracket has approx. 3000 miles on it. Should I regrease the bearings? Or is it something worse? Thanks! #askGCNtech
#askGCNTech - how much flex/play is normal in a bearing set on the rear wheel ? i have a HED Ardennes wheelset on a cannondale synapse and can move the wheel a bit from side to side which can create brake rub . i’ve had 3 separate mechanics look at it each with different approaches. some say it’s normal and i should have flex , others say i need to tighten things like the quick release mech . any thoughts ? thanks !
#askGCNTech
Hi John, I have got a fullultegra R8000 groupset on my Trek Emonda with a short cage rear derailleur. Is it possible to fit a 11-32T cassette on it without swapping to a medium cage derailleur?
This guy is the best!! Any chance Calvin can become a regular on this show?
GCN Tech the yankee edition, I highly enjoyed this, thnx!
Dry silicone works for the cleats squeaking!
Calvin is brilliant. I couldn’t tell you how many times I have referenced his videos over on the Park Tool network. I was totally pumped seeing my two favorite cycling channels on TH-cam meet up. Looking forward to the next one!
Regarding setting up 2 sets of wheels to work without having to realign brake calipers…why not shim one rotor? Have seen this suggestion in many other places, and tried it myself. I have not yet exploded into a ball of flames, but I’m the first to admit there’s a lot I don’t know. Nevertheless, I can now swap my wheels with ease. Actually they’re the same hubs, and they STILL don’t both align perfectly without one being shimmed.
Hi there ~ I'm ''Old School'' and i'd prefer a Cup & Bearings to sealed BB, because any problems i can then remove, clean, and replace ... how do i change my bottom bracket ?
This is very inspiring. Like Mr.Jones said he did not got the degree but instead pursued his passion. Kudos to you sir. I have learned a lot from you by watching the Parks Tool / GCN channel. Kudos also to Jon. More power to your channels.
I torque everything. Especially on anything carbon. Metal will usually deform, carbon will crack. Get a torque wrench and look at the owners manual for the torque specs.
Greait show! and my problem is: my tyres dont place even round the rim, at some place the bid dont go right into the groove of the rim - it stack something 1 or 2mm below right position (talking about clincher) so when you spin the wheel there is some shalow place and while riding it gives some vibrations. Lube like liquid sope or vaseline doesnt help, tryed inflate to max - doesnt help. It happens with shcwalbe range cruiser 37mm and panaracer rimbo 32mm on 28mm wide rim. Spent 2 hours with panarecer before iron man 70.3 to get it right at last. But when i switch back to shcwalbe after another 2 hours of swearing can get even and smooth spins, still bid doesnt want to go at the right spot. For 10 yers of bike maintanens it hapens first time. The rim is axis elite disc on Specialized Diverge Elite DSW.
I am a bicycle mechanic syce 2000 started at Hungary now I am at Lowestfoft Engalnd, What I see that there is a smal amount of real bike specialist/mechanic because no qualification need for the job and also underpaid. I stick with it because is part of my life this is my passion. Do you thing that there is any chance to push out the junk from the industrie like Halfords/Cyclerepublic "mechanics" who are don't know what they doing at all ? (it is Halford faults not the "mechanics" who are try to work there. there is no training at all etc)
Sorry for the crappy english :D
Hi John. I’ve recently had a new KTM Lisse with Ultegra Di2 shifting and love how crisp the shifting is however, when in the lowest gear (little ring on the front and largest sprocket at the back) the chain pops off the sprocket effectively changing gear by itself. I have tried to micro adjust the rear derailleur but this causes excessive chain rub and does not solve the problem. Any ideas? Thanks Ryan. #askGCNTech
#askGCNTech Since autumn officially starts this month and bad weather 'll come with it. I'm looking at smart trainers (direct drive), preferably below 1000 euro's. I have many questions at this moment, do they all support my campa groupset? What would be a good one to join swift? What are other software options to get a nice visual immersive experience?
Another level! Brilliant and entertaining!
Shims are available for Centerlock rotors: novemberbicycles.com/products/centerlock-hub-rotor-shim-pack-of-4
#askGCNtech can you explain the different STI positions over the generations? For example i cant seem to get my 105 5600 shifters in the same position as the 5700. They allways angle upward. Is there a fix for that or did the ergonomics and position just change over time? Huge thanks
Holy moly this is like Megatron and Optimus Prime joining forces. 👊
Incredibly knowledgeable and entertaining chap. Great video 👍
Most of my bikes are from the 70’s to the 90’s. I’m just getting into home bicycle repairs for myself. Do you have a bicycle tool set that you have for these year bicycles? If not what do you recommend? Thank you.
Honestly I was looking forward to this video just to see John fan girl and geek out over Calvin Jones
Calvin, straight faced waxing comments... priceless!
Absolute gold!!! Some of those answers from dropping the hammer to moustache doping are brilliant. Best laugh I have had in ages. Great work GCN!