@@256shadesofgrey The chainline would be so horrible with 75/52 that I'm not sure you would be even able to shift into that gear unless you would have EXTREMELY long chainstays.
A big chainring needs a casette with a big range too, i actual have a small 70 tooth chainring with 11-52 casette, i change the chainring soon to an 80 tooth 🤪
Longer crank increases the circumference of your pedal stroke, reducing the number of revolutions for a given time period. Also closes the hip angle compared to shorter cranks. Shorter cranks allow for higher cadence, thus having the effect of a lower gear ratio in terms of how much stress is put on your muscles. A longer crank helps when you need torque to loosen the crank bolt.
So the ideal setup for this front ring would really be a MTB cassette with large uphill rings aswell as small rings, a road cassette is pointless with any incline. It would be great on a recumbent where aero drag is much less.
I see potential for an even bigger chainring. I'm thinking, compound gear systems! Where the pedals are connected to a smaller internal gear that drives the large outer chainring. Getting a torque multiplication effect, making it easier to turn the large chainring and allowing for an even bigger blade!
The 75 tooth chainring would give you an advantage in many Strava downhill segments. But how do you get up the mountain? You would need a small 60 chainring and a classified hub gear, although the large chainring does not have a climbing rivet for the chain. Then you would have 48 gears.
Actually, one of these with a MTB 10-51 cassette at the back would be pretty decent. The climbing gear would still be 1.5, but its not that in the grand scheme of things. Actually better than 39-25 people were running not long ago. And a 75-10 would keep up with highway traffic
the 75-10 doesn't make you any faster - and for sure not to the speed of high way traffic. Humans simply don't have the power to use them. For 100 kph you need 4000-5000 W (depending on how aero you are); and even in a steep downhill... when you would reach 96 kph freewheeling you would need about 400 W to reach 100 kph. Makes no sense at all
Hallelujah 🙌🏻!!!!! The daily jesus devotional has been a huge part of my transformation, God is good 🙌🏻🙌🏻. I was owing a loan of $49,000 to the bank for my son's brain surgery, Now I'm no longer in debt after I invested $11,000 and got my payout of $290,500 every month…God bless Mrs Susan Jane Christy ❤️
After I raised up to 525k trading with her I bought a new House and a car here in the states 🇺🇸🇺🇸and also paid for my son's surgery (Oscar). Glory to God.shalom.
My Di2 gears packed in due to extreme heat over in Mallorca one year, locking me in the 52/11…! I had to get from Over Murro back to Palma Nova😂 I looked just like Olly on the flat, and i kind of got into it as you just batter on with what you’ve got😳😂 Then came the climbs and the weaving around, just crazy and my legs were over due to explode and minute. I remembered a bike shop on the edge of Palma and begged them to help me out as bigger climbs were afoot to get home. They kindly stripped out the wires, found no faults, put it back together and it just started up working again!! Defo the heat i think. Got back home ok but it then packed up again a few days later. I cooled off the bike in an air conditioned sympathetic garage and hey presto it worked again!! It was around 34 degrees and would be hotter inside the frame i guess with the sun beating down. Have you ever had this with Di2? It was Dura ace 3rd gen woth the clever battery. Cheers.
I'm turning my gravel bike into a more-of a road bike. I still really enjoy the 1x system, and there are no hills THAT crazy in my city. I'm going from a 40t chainring / 11-42t cassette to a 44t chainring / 11-36t cassette. If ever I come to an ascent I can't manage - I'm 110% certain this video will pop-up in my head.
Great vid! I used to have a 61 tooth chainring on my bike. Impractical but got some funny looks and comments. Doing 20mph in first gear was always interesting.
I have the 69T version of that chainring. I cut shift ramps and added shift pins to it and made a 52-58-69 triple. Moved the FD up and trimmed the cage to shape. Rear is 7 speed 14-28. 8 speed chain. Big ring shifts perfectly.
@@pierrex3226 I couldn’t get past 60km/h with the 52T and 14 sprocket and I had custom painted the bike frame, wheel rims and hubs so I wanted to keep the wheels. Easiest solution was to put on a bigger chainring.
Yeah that's a monster. And yeah, it was fun to watch. Some world tour riders could find a legit use for it, certainly. Not me, I'd enter cardiac arrest.
Really enjoyed the format and structure of this video (both lads working together in the workshop overcoming challenges, less presentational at times etc.) so hope this style comes back again!
Dr. Bridgewood was so right about "some niche applications" to exist. This video is living proof that at least one application exists. It unequivocally proves that the statement "not all heroes are idiots" is fully reciprocal.
My road bike has double 54t/42t chainrings and 11t-34t rear rings, which is more than enough for me, and I've never run out of rings on either side. Chainrings with 75t are only for making fun videos like this.
Gentlemen - while exaggerated - welcome to race gearing before compact chainrings and 10 cog cassettes. Racing "back in the day" while not as fast as today it was hard.
I had a 75 on my Brompton which was originally for a recumbent bike. I did race with a 70t in the world Brompton Championships. And on a visit to Royce Engineering Cliff had a 144t chainring.
My only question after watching the video is this: When Alex and Ollie are watching each other attempt the crazy climb, why do they both stand on the sidewalk like they're on the wall for a penalty kick?
Thanks for doing this!! I'm older and dealing with some health issues and there is a possible use case for a larger chain ring in some situations. In the USA we have more space and much more lenient enforcement of E Bike class rules especially in the suburbs and country roads. I like to pedal hard with assistance and since it's hot where I'm at, I could use a slightly taller (larger) front chain ring. But your test shows that there's a point of diminishing returns dealing with wind. So thanks again for doing this. Based on your experiment I'd probably add just 2 or 4 teeth to the front ring.👌🏻👍
I remember back in the eighties when Dave Legrys attempted the landspeed record. His chainring was much bigger and he needed a Rover 3.5l to drag him up to speed. He actually used a section of motorway to do it on. We also had big chainrings on some of the club (Harlow CC) roller bikes.
On evening after some beer and accidental view of "Fastest bicycle": -How it even cranked? -Hold my beer! We found how... Next day this video released. 😅
There is nothing new under the sun. TA did a 68 tooth chainring back in the early 60s. I rode up and down all the big hills in Bath with a 23t largest sprocket. I glazed the Mafac brake blocks coming down Wellsway. Toe clips and straps of course. I was only 17.
Sally in the Woods??.....I've got a "haunted" road like that, that was on the route of a fast group ride that I used to do. Its name was Munger Road. Somebody even made a movie about the legend, with its name ("Munger Road"). They even used the railroad crossing as part of the movie. Maybe it was haunted. One guy went down hard, after hopping the tracks, at speed. The speed test achieved only 44 to 45 mph. I can spin a 53x12 at 130 rpm, that fast.
Worthy test for every future GCN presenter. Makes me glad don't live anywhere near you, though I felt like I attempted a similar challenge on the hills above Oakland California near San Francisco.
I would think making the chain smaller would enable the whole system to be lighter & more efficient. Not sure if it’s been tried, but I would guess the improvements in modern materials would make it possible.
When Ollie showed the chainring I was fully expecting him to say "we're going to mount it on a bike and Hank will use it to climb Alpe d'Huez"... Slightly disappointed he didn't...
There was a guy - Nic Bowdler - who used a TT bike with a 77T chainring. I remember him passing me on the Bentley course (I think it was a 50) like some sort of stealth weapon.
Itb is interesting that as the diameter of a chainring increases, the force on the chain links diminishes, thereby reducing frictional losses in the chain. Time to take this bike to the Silverstone rig to measure the savings! Recumbent enthusiasts and engineers realized the advantages of large rings along time ago and have favoured this approach when designing HPVs intended to reach speeds as high as 130 kph. 75 teeth is actually way too small for a fully faired HPV, but it would work well for an unfaired recumbent. I will be using a similar sized ring on my new unfaired recumbent TT bike next spring.
This would be great on an e-bike with high torque motor. You could set it at one gear and use the motor assist levels as your “gears”! Uphill and down on the one gear! Superb!!!
I am putting this exact chainring (I already have it) on a Billy Goat V3 that is arriving at my home later this week. The issue with that bike is spinning out because of how fast it goes. I want a bike that doesn't spin out at top speeds.
I have ridden with a 56T chainring for a year now on my TRIBAN RC500 road bike with SHIMANO SORA groupset, and was able to achieve faster speeds than you have on the 75T chainring. For me, a 56T is enough! Kudos to ROTOR by the way, which also produces monstrous chainrings - I mean the sizes are still within limits.
I use a 75-tooth and Schlumpf Mountain Drive (2.5 reduction in low range) with an 11-50, 10-speed cassette on my velomobile. It allows cruising at 55-60km/h on flat ground and 80-90km/h on the downhills.
Being a fixed gear guy, there's absolutely nothing where it would work for me... Knew someone that once tried riding the John Howard land speed bike, on a trainer, at a trade show. He said it was absolutely awful getting the cranks turning.
The thing I've learnt about this chainring. 1) I don't need one and won't be buying one. 2) I'll be pushing my bike uphill earlier than on my road bike with a 34 tooth chainring and a 36 tooth botton gear on the cassette. Ot the 32 tooth chainring and 51 tooth bottom gear on my mountain bikes.
I can imagine that the chainring might suit a single speed/fixed gear providing you also increase your sprocket size - a 50/16 up to 75/24 - same gear inches but less tight articulation thus saving watts. It would look bonkers though. Or maybe it is used on a recumbent which due to much lower drag can require bigger gears.
Would be cool to see the result of an inverted experience : a very small and tiny front chainring (10-15 tooth) combined with a super big cassette. Take then the bike to super steep climbs.
I was at a ski resort yesterday with a lot of MTB off-road downhillers around. The bikes, however, all seem to be geared for extreme climbing. One of those rear cassetes with the huge low gear cog would be interesting with this chainring. You’d need the second chain for sure though.
I think 54 tooth chainring its like the optimal for a road bike, more than that, it starts to turn into track bike, but you dont have climbs, traffic, and so
PLEASE don't put spacers on Hollowtech 2 axles. Really bad advice. It'll reduce the interface on the non drive crank. Also the preload bolt won't go in far enough and could fail. You're more likely to overload the BB bearings. So many reasons why Alex should have waited for the chainring bolt spacers...
Chainring and sprocket size don't really affect cross-chaining severity since only half the teeth on either are engaged (in line with the BB spindle and rear axle.)
I would love to see them do this again but paired with Shimano’s gravel cassette and derailleur, or better still on a bike with Drivelines 75 tooth chainring, paired up with SRAMs AXS shifters up front and Eagle AXS rear derailleur and cassette, to give a 50-10 rear cassette (assuming they were compatible - I confess I’ve not looked at the compatibility with the chainring and SRAM). See Ollie’s match stick legs power up that hill with a bigger bailout gear!
Would you try riding with a 75-tooth chainring? Or is it just too extreme?
Put a 9-52 MTB cassette on it. 75/9 sounds like fun, while 75/52 will be close to what you have for a climb gear on road bikes anyway.
Could be good on an e-bike. I don't really use my 53-11 so a 75 is too much for me on a normal road bike.
You guys should try that chainring on an electric road bike
@@256shadesofgrey The chainline would be so horrible with 75/52 that I'm not sure you would be even able to shift into that gear unless you would have EXTREMELY long chainstays.
A big chainring needs a casette with a big range too, i actual have a small 70 tooth chainring with 11-52 casette, i change the chainring soon to an 80 tooth 🤪
A longer crank should reduce your effective gearing, not the other way round
yep, and a guy with a phd in chemistry should know that. But I guess thats what happens when you have to work and talk at the same time.
@@bergerniklas6647 chemistry has nothing to do with physics, I liked physics way more than chemistry and don't know shit about chemistry either
yes, mechanical advantage
Came here to say that.
Longer crank increases the circumference of your pedal stroke, reducing the number of revolutions for a given time period. Also closes the hip angle compared to shorter cranks. Shorter cranks allow for higher cadence, thus having the effect of a lower gear ratio in terms of how much stress is put on your muscles. A longer crank helps when you need torque to loosen the crank bolt.
That's not a chain ring, that's a table saw blade!
don't give em ideas 😂
As long as it’s 3/32, 😂
Or a miter saw blade...😅
So the ideal setup for this front ring would really be a MTB cassette with large uphill rings aswell as small rings, a road cassette is pointless with any incline. It would be great on a recumbent where aero drag is much less.
I wanna see Feather vs Holmes on that climb with the same setup.
Also, +1 to all those people suggesting they try it with a crazy 50t MTB cassette
Such chainrings are useful for small wheeled bike - like folding bikes or recumbents.
Yes definetly
Oh, you're active. Waiting for new videos!
Unless the wheels are so small the CR drags on the ground.
At that point, that chainring is a third wheel :D
I'm thinking to put on folding bike so be 32.4mph estimate top speed I go, might make single speed depending on where cycle as only need 75-11
.
*"You know who's going to hack this...
*...ebikers with hub motors.*
*"But officer, I was going 75 in eco mode.*
2:37 No, he said bolt hole, kids!
lmaooooo unfortunate accent for that word
boat hole?
Alex comment about Dura Ace cranks was funny AF. If you know, you know
😂😂😂
I know 😅
A guy in Brazil used a 100+ chain ring in his bike when breaking the speed record in a road with the help of a wind shield behind a car.
I see potential for an even bigger chainring. I'm thinking, compound gear systems! Where the pedals are connected to a smaller internal gear that drives the large outer chainring. Getting a torque multiplication effect, making it easier to turn the large chainring and allowing for an even bigger blade!
They do that for the speed records, basically two chains
on my Alex Moulton bicycle, I used a 60 tooth for general training, and for my world record HPV (51.3 mph-82.5 kph) I used an 86 tooth chaining
Did you now?
Got to appreciate Alex embracing the 'I've got Dura-Ace chainsets coming out of my ears' meme 🤣
Theres a London cyclist on Strava called "Mean Cycling" he rides this exact crank pretty much on a daily basis and hes fast!!
The 75 tooth chainring would give you an advantage in many Strava downhill segments. But how do you get up the mountain? You would need a small 60 chainring and a classified hub gear, although the large chainring does not have a climbing rivet for the chain.
Then you would have 48 gears.
Mountains up by bus 😂
The good old pushing the bike
Love the setting which like in a sit com type of vibes. Really loved it! Maybe try racing the rig to local criterium race?
Actually, one of these with a MTB 10-51 cassette at the back would be pretty decent. The climbing gear would still be 1.5, but its not that in the grand scheme of things. Actually better than 39-25 people were running not long ago. And a 75-10 would keep up with highway traffic
How my TT is set up, though with a smaller CNC’d 61T…
Yeah i would probably put this on my mtb if it would fit.😀
So realistically would probably have to use gravel/road bike with mtb casette to make it fit.
the 75-10 doesn't make you any faster - and for sure not to the speed of high way traffic. Humans simply don't have the power to use them. For 100 kph you need 4000-5000 W (depending on how aero you are); and even in a steep downhill... when you would reach 96 kph freewheeling you would need about 400 W to reach 100 kph. Makes no sense at all
@@fiddleronthebike ackschually
Hallelujah 🙌🏻!!!!! The daily jesus devotional has been a huge part of my transformation, God is good 🙌🏻🙌🏻. I was owing a loan of $49,000 to the bank for my son's brain surgery, Now I'm no longer in debt after I invested $11,000 and got my payout of $290,500 every month…God bless Mrs Susan Jane Christy ❤️
Hello how do you make such monthly??
I'm a born Christian and sometimes I feel so down🤦🏼of myself because of low finance but I still believe in God🙏.
She's a licensed broker here in the states🇺🇸 finance advisor.
Thanks to my co-worker (Alex) who suggested Ms Susan Jane Christy
After I raised up to 525k trading with her I bought a new House and a car here in the states 🇺🇸🇺🇸and also paid for my son's surgery (Oscar). Glory to God.shalom.
Can I also do it??? My life is facing lots of challenges lately
I think I saw Alex and Ollie going up Bathford Hill to do Prospect Place as I was going down and now I know why Ollie looked really grumpy!
That is Bike Vault material. Ring da Bell 🔔
When Guy Martin did that land speed cycling record he had a crazy setup that he couldn't even pedal from a standstill. There's always a niche.
I know people who drive such rings on very fast velomobiles. You can make 2x with hand-shifter, just tipping the chain down to the smaller one.
„How about trying to ride your bike with a 75T chainring in a stage of Tour de France?
Victor Campenaerts:
*„YES!!!“*
Btw 75T with 11T at 90rpm with 28C tire is 78km/h. and at 130rpm that is 113km/h only if you have the power to do that.
ok. time to attach this to one of those city bikes with the basket on the front and give it to Hank to try out on Mt. Ventoux
What rings do they ride on the track? There are some big lads with quads like tree trunks.
My Di2 gears packed in due to extreme heat over in Mallorca one year, locking me in the 52/11…! I had to get from Over Murro back to Palma Nova😂 I looked just like Olly on the flat, and i kind of got into it as you just batter on with what you’ve got😳😂 Then came the climbs and the weaving around, just crazy and my legs were over due to explode and minute. I remembered a bike shop on the edge of Palma and begged them to help me out as bigger climbs were afoot to get home. They kindly stripped out the wires, found no faults, put it back together and it just started up working again!! Defo the heat i think. Got back home ok but it then packed up again a few days later. I cooled off the bike in an air conditioned sympathetic garage and hey presto it worked again!! It was around 34 degrees and would be hotter inside the frame i guess with the sun beating down. Have you ever had this with Di2? It was Dura ace 3rd gen woth the clever battery. Cheers.
Lol electronic shifting is such junk. Can't even handle being ridden outdoors where bikes belong! What a joke
Glad that your knees survived the climb. Great to see dura-ace cranks make an appearance
Omg, I’ve never seen anyone else apart from Mean Cycling have this set-up.
...and I think he'd beat both Ollie and Alex up that hill! 😊
I'm turning my gravel bike into a more-of a road bike. I still really enjoy the 1x system, and there are no hills THAT crazy in my city. I'm going from a 40t chainring / 11-42t cassette to a 44t chainring / 11-36t cassette. If ever I come to an ascent I can't manage - I'm 110% certain this video will pop-up in my head.
Ollie’s new mantra in action: “Just head out with your mates and batter yourselves!”
Great vid!
I used to have a 61 tooth chainring on my bike. Impractical but got some funny looks and comments.
Doing 20mph in first gear was always interesting.
Use that 75-tooth on the longest bike record attempt I was alluding to in the "Secret Features of your Shimano Di2 Groupset" ...
I'd like to see the bodybuilder guy you used on an earlier video try it or even Ganna.
I have the 69T version of that chainring. I cut shift ramps and added shift pins to it and made a 52-58-69 triple. Moved the FD up and trimmed the cage to shape. Rear is 7 speed 14-28. 8 speed chain. Big ring shifts perfectly.
Hahaha. Why though?
Lol what is the use case for this? Do you only ride down mountains on a 1980s bike?
@@pierrex3226 I couldn’t get past 60km/h with the 52T and 14 sprocket and I had custom painted the bike frame, wheel rims and hubs so I wanted to keep the wheels. Easiest solution was to put on a bigger chainring.
I believe that you have won the internet, sir.
The Dura Ace jokes will never stop!
Yeah that's a monster. And yeah, it was fun to watch. Some world tour riders could find a legit use for it, certainly. Not me, I'd enter cardiac arrest.
Really enjoyed the format and structure of this video (both lads working together in the workshop overcoming challenges, less presentational at times etc.) so hope this style comes back again!
Dr. Bridgewood was so right about "some niche applications" to exist. This video is living proof that at least one application exists. It unequivocally proves that the statement "not all heroes are idiots" is fully reciprocal.
It's not even a meme any more, Alex really does just have random bits of Dura-Ace laying around everywhere lmao
My road bike has double 54t/42t chainrings and 11t-34t rear rings, which is more than enough for me, and I've never run out of rings on either side. Chainrings with 75t are only for making fun videos like this.
next you should try the smallest chainring you can find and a mountain bike type cassette with a 50T cog so its a really low gear
Good silly fun with a sensible conclusion at the end. Nice work chaps!
More crazy videos please 😁
Not Sure If I worked this out correctly but I Think the Top Speed on 75 Tooth Crank with an 11 Rear is 60/KMH 37.2 Mph (Flat Road) 70RPM
@@TESTA-CC yes that seems to be accurate.
I see Albert has a nice variety of Dura-ace chainsets in his garage, with that 7800 series
need power overlay when cranking up that hill
Love the style of this vid guys.. just two mates playing with bikes and parts in the garage.. then trying them out.. classic.. Pete 🚴♀️🚴🏻👍
My large chainring is 52t with a 12-25t cassette. There is absolutely no way I would be able to pedal a 75t, except on a descent.
"Will we even be able to ride it on the flat?" Editor makes sure to include footage of them going up a hill with it just before...
Make Andrew Feather ride it uphill!
wouldn't longer cranks give you lower gear? they give you more torque so you can push the pedals more easily but you lose a bit of speed
@@alf3071 yes
They actually used longer crank, considering height of the rider.
Absolute cinema for the sunday!
Gentlemen - while exaggerated - welcome to race gearing before compact chainrings and 10 cog cassettes. Racing "back in the day" while not as fast as today it was hard.
I had a 75 on my Brompton which was originally for a recumbent bike. I did race with a 70t in the world Brompton Championships. And on a visit to Royce Engineering Cliff had a 144t chainring.
Isn't that a track chainring?
Recumbent chainring.
My only question after watching the video is this: When Alex and Ollie are watching each other attempt the crazy climb, why do they both stand on the sidewalk like they're on the wall for a penalty kick?
Thanks for doing this!! I'm older and dealing with some health issues and there is a possible use case for a larger chain ring in some situations. In the USA we have more space and much more lenient enforcement of E Bike class rules especially in the suburbs and country roads. I like to pedal hard with assistance and since it's hot where I'm at, I could use a slightly taller (larger) front chain ring. But your test shows that there's a point of diminishing returns dealing with wind. So thanks again for doing this. Based on your experiment I'd probably add just 2 or 4 teeth to the front ring.👌🏻👍
okay both 110 and 130mm BCD is pretty cool.
I remember back in the eighties when Dave Legrys attempted the landspeed record. His chainring was much bigger and he needed a Rover 3.5l to drag him up to speed. He actually used a section of motorway to do it on. We also had big chainrings on some of the club (Harlow CC) roller bikes.
On evening after some beer and accidental view of "Fastest bicycle":
-How it even cranked?
-Hold my beer! We found how...
Next day this video released. 😅
hey guy if you want to try something even bigger velobike sells a 100 tooth chainring
Love this mockumentary style of filming, it's like I'm watching a special episode of The Office 📽️
There is nothing new under the sun. TA did a 68 tooth chainring back in the early 60s. I rode up and down all the big hills in Bath with a 23t largest sprocket. I glazed the Mafac brake blocks coming down Wellsway. Toe clips and straps of course. I was only 17.
I used to use a 12-23 cassette, until 8 years ago.
Lovely of that van driver to wait for Alex...
Sally in the Woods??.....I've got a "haunted" road like that, that was on the route of a fast group ride that I used to do. Its name was Munger Road. Somebody even made a movie about the legend, with its name ("Munger Road"). They even used the railroad crossing as part of the movie. Maybe it was haunted. One guy went down hard, after hopping the tracks, at speed.
The speed test achieved only 44 to 45 mph. I can spin a 53x12 at 130 rpm, that fast.
...Ollies little legs... lol!
Alex holding the light saber precariously at 3:15. LOL.
Worthy test for every future GCN presenter. Makes me glad don't live anywhere near you, though I felt like I attempted a similar challenge on the hills above Oakland California near San Francisco.
I would think making the chain smaller would enable the whole system to be lighter & more efficient. Not sure if it’s been tried, but I would guess the improvements in modern materials would make it possible.
When Ollie showed the chainring I was fully expecting him to say "we're going to mount it on a bike and Hank will use it to climb Alpe d'Huez"... Slightly disappointed he didn't...
There was a guy - Nic Bowdler - who used a TT bike with a 77T chainring. I remember him passing me on the Bentley course (I think it was a 50) like some sort of stealth weapon.
Itb is interesting that as the diameter of a chainring increases, the force on the chain links diminishes, thereby reducing frictional losses in the chain. Time to take this bike to the Silverstone rig to measure the savings! Recumbent enthusiasts and engineers realized the advantages of large rings along time ago and have favoured this approach when designing HPVs intended to reach speeds as high as 130 kph. 75 teeth is actually way too small for a fully faired HPV, but it would work well for an unfaired recumbent. I will be using a similar sized ring on my new unfaired recumbent TT bike next spring.
This would be great on an e-bike with high torque motor. You could set it at one gear and use the motor assist levels as your “gears”! Uphill and down on the one gear! Superb!!!
I am putting this exact chainring (I already have it) on a Billy Goat V3 that is arriving at my home later this week. The issue with that bike is spinning out because of how fast it goes. I want a bike that doesn't spin out at top speeds.
@@JoeBManco nice! Best wishes!
@@alphauno6614 Thanks! This will be a bicycle that will become a new way for me to commute to work, which is 24 miles one-way.
I have ridden with a 56T chainring for a year now on my TRIBAN RC500 road bike with SHIMANO SORA groupset, and was able to achieve faster speeds than you have on the 75T chainring. For me, a 56T is enough! Kudos to ROTOR by the way, which also produces monstrous chainrings - I mean the sizes are still within limits.
That is the definition of pedalling squares! Give it to Feather, he likes climbing out of the saddle.
I use a 75-tooth and Schlumpf Mountain Drive (2.5 reduction in low range) with an 11-50, 10-speed cassette on my velomobile. It allows cruising at 55-60km/h on flat ground and 80-90km/h on the downhills.
As a velomobilist I can truly confirm, that there are way bigger chainrings than 75 teeth, Man are you joking? 75? I could walk instead.
And here I am trying to find the smallest chain ring I can find. 😂
Mark would love this😂
Ideas for the next video:
- longest stem
- shortest crank arms
Being a fixed gear guy, there's absolutely nothing where it would work for me... Knew someone that once tried riding the John Howard land speed bike, on a trainer, at a trade show. He said it was absolutely awful getting the cranks turning.
Straight to the bike vault! Ultra Nice!
You have the secret weapon for Si to win the Brompton World Championship next year.
The thing I've learnt about this chainring. 1) I don't need one and won't be buying one. 2) I'll be pushing my bike uphill earlier than on my road bike with a 34 tooth chainring and a 36 tooth botton gear on the cassette. Ot the 32 tooth chainring and 51 tooth bottom gear on my mountain bikes.
I can imagine that the chainring might suit a single speed/fixed gear providing you also increase your sprocket size - a 50/16 up to 75/24 - same gear inches but less tight articulation thus saving watts. It would look bonkers though. Or maybe it is used on a recumbent which due to much lower drag can require bigger gears.
Ollie's on fire with the "that's what she said" type jokes.
Regarding that hill... can he get it (the bike) up? >.> Yes. Pretty much. Close enough.
I've done more than 80kph pedalling with a 52-12 (downhill, of course!). Souplesse is the key to going quick. ;)
Love the mad scientist lighting, very Dr Frankenstein
Would be cool to see the result of an inverted experience : a very small and tiny front chainring (10-15 tooth) combined with a super big cassette. Take then the bike to super steep climbs.
This is great, just a lads day fluffing in the shed (although a fancy one) and trying silly things
I was at a ski resort yesterday with a lot of MTB off-road downhillers around. The bikes, however, all seem to be geared for extreme climbing. One of those rear cassetes with the huge low gear cog would be interesting with this chainring. You’d need the second chain for sure though.
I think 54 tooth chainring its like the optimal for a road bike, more than that, it starts to turn into track bike, but you dont have climbs, traffic, and so
I have a folding bike with a 65 tooth chainring. It's really fun as long as I don't have to go uphill too long.
It's great for a pedal boat where u need the extra RPM for the prop! :)
PLEASE don't put spacers on Hollowtech 2 axles. Really bad advice. It'll reduce the interface on the non drive crank. Also the preload bolt won't go in far enough and could fail. You're more likely to overload the BB bearings. So many reasons why Alex should have waited for the chainring bolt spacers...
Chainring and sprocket size don't really affect cross-chaining severity since only half the teeth on either are engaged (in line with the BB spindle and rear axle.)
I would love to see them do this again but paired with Shimano’s gravel cassette and derailleur, or better still on a bike with Drivelines 75 tooth chainring, paired up with SRAMs AXS shifters up front and Eagle AXS rear derailleur and cassette, to give a 50-10 rear cassette (assuming they were compatible - I confess I’ve not looked at the compatibility with the chainring and SRAM).
See Ollie’s match stick legs power up that hill with a bigger bailout gear!
2:37 Alex introduces the lineage of Hungarian nobleman Boho Leinzup V and his predecessors
Nik Bowdler won the BBAR using (from memory) an 84 tooth chainring. He also did an 18 minute 10.