Designing my NEW Gravel Bike // Paul Brodie's Shop
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- เผยแพร่เมื่อ 4 ต.ค. 2024
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#gravel #bike #drawing #fussyframebuilder
Schwinn invented gravel bikes, so I would say the head badge will work. I'd prefer a Brodie head badge if it were mine:)
Thanks for commenting :)
Oh yes make it a Schwinn! Not only will confuse the new kids but it’s a shout out to the original “mountain bikes” old schwinns and the like used for downhilling!
The Schwinn head badge looks good but a custom "b" would look much nicer. Thanks for the video!
Im sitting here on BikeCad designing my gravel bike, and this pops up 😁
Hope our video helped you :)
5 minutes in and I’m smiling and thoroughly enjoying your work and explanation! Love to see you doing a geo drawing Paul!
Thank you so much 😀 Appreciate your comments!
I love your attention to detail. I liked your reference to Allen Milliard when you picked up your hacksaw!
Hi Paul, I really enjoy your videos. The down tube lenght is the reason I write this comment. You marked the length on the upper edge of the down tube while it was still in round shape, then you ovalized it and then mitered it at the mark. But the ovalization brought the upper edge of the tube up on the head tube and as a consequence further away from the BB. thats why you had to readjust your jig.
Thanks for liking our videos.. The real reason I had to adjust the jig was because I didn't set the BB height properly. My fault. When I set the correct BB height, I then had to reset the jig to the initial setting... This was not shown on camera. Building a frame is not always an exact process; so many small things can get into the way!
I had a Fat Chance that got stolen in Boston in 1988, it was recovered a week later through a for sale ad in the paper. I rattle can sprayed it metallic red and put a Schwinn badge on the head tube, never lost it again. I often wonder if its now sitting in a garage somewhere gathering dust as as beat up old “Schwinn”.
I was about 10 when I saw my first Brodie bike in somewhere around 1994 or 95 while riding trails in Squamish BC. It was Black with white lettering, and well equipped. I saw a few more later on while competing in the Jr. Test of Metal in 96'. Very seldom did me and my buddies encounter Brodies on the trails, but it was like spotting a Ferrari when we did. We'd mention it to each other at school the next day. I'd always hear folks talking about Paul and his beautifully built bikes and I always wanted to see the Brodie factory for myself. Fast forward 30 or so years and I'm still riding mountain bikes and watching the man himself build bikes from the comfort of my home. As cool as it gets. Keep up the great work on this channel Paul & Mitch. Thoroughly enjoying the content. 👍
A nice brass Brodie badge would look good on the bike.
“B.E.E. - Brodie Engineering Enterprises” - ???
Ooh what fun. All those critical millimeters and fractions of degrees.
This is where my fussiness comes in very handy... Thanks for watching!
😁
Yes, it *is* milling time - one wheel bike trailer here. Hope to eventually do *this* level of work in the future.
I hope you do too :)
I find it interesting that you use mainly metric and then an odd imperial measurement
I guess because the imperial measurements are traditionally used in frame building
When Paul Brodie says he's just winging it, I'm taking notes
I guess all the people watching this video are as happy as I am to learn something so interesting and in such detail. I don't comment on videos and I know it's not right, but this time I thought I'd ask why some dimensions are in millimeters and others in inches. Why is this way? Inches are not popular where I grew up :D. I wish you both good health. Greetings from Bulgaria.
Hello Bulgaria! The reason that some dimensions are metric and some imperial, is because I was raised with both, sort of like being bi-lingual. I know it's not the best to flip back and forth, but that's who I am... Thanks for watching :)
When I taught high school physics, I had a wooden protractor just like the one you were using. I enjoyed your video, thanks for sharing 👍.
Seeing a master at work here is so cool to watch, looking forward to the next vid!
Awesome, thank you!
thank you.
Thank you Paul
Thank you too...
Great work, Paul. Love the old school drawing and layout. This is a skill that'll be dead in 50 years.....along with any shred of imagination. You're looking great, by the way!
Thank you! I guess I am old school, because that's how I do a frame drawing!
@@paulbrodie Funnily enough, I had something delivered to my office, the other day. It was packed in big sheets of unscored cardboard. I thought of you as I neatly put it in the corner. So much CAD stock for a future project! No reply required, mate. I know you're busy.
You are an amazing teacher. Thank you.
Really enjoyed watching the process - thank you for documenting it for posterity!
Now I understand why the more recently introduced "stack" and "reach" measurements were not listed on my old custom frame sheet - front-center and bb drop is all you need to decide based on rider measurements and riding style. top and seat tube dimensions pretty much just fall into place given pretty generic parameters.
Glad you enjoyed it! Yes, stack and reach can help but are not truly necessary....
Gary Fisher used to race a 1937 Schwinn Excelsior on Repack Road..The old Schwinns were the original MTB’s.. I have a 1951 model B-6.. I made an aluminum adapter plate for the springer fork and the rear wheel..for disc brakes 🚲
I have orde a Fat chance custom and we were moving numbers to match my size, it was a cool process to design the geo and that all stuff. Now I´m waiting for my frame as I don´t have the skills. For now I will watch this channel to get ideas and konwledge from one of the greates masters👍😀
Thanks for watching and commenting.
Steel bicycle build & Paul Brodie doing it = best tube learning experience! Thanks for getting back to this!
Paul, I am fascinated at your wealth of knowledge and experience that you call up at a moments notice without much thought as it seems to the average person! It is great to see you put a frame together using the old methods using a bit of poetic licence when required and knowing what rules come into play when deciding angles, length, diameters, mitres, etc... great content and always... Mitches editing is first class. If you had a frame building course in Ontario, I would be there, even though Im over 60!
WOW! Once again you 27:27 leave no doubt that you are an artist!
Thank you James :)
Great to see you back building bicycle frames. My favorite videos!
Merci Paul from France . I learn a lot and like the way you explain whityour calm voice 👋
Hey Paul,
love seeing you building a frame for yourself.
Have you thought about component choice yet?
With the bigger tubes I'd assume the frame is going to be much less compliant, especially with the fat seat tube.
Low tyre pressures definitely help with comfort, but I'd suggest using a shim to reduce the ID of the seat tube to 27.2mm and looking for a carbon seatpost that is meant to flex.
Yes, I took all the components off my hardtail and I will use them on my gravel bike.. The tires are 650b X 50mm, so there will be a bit of cushioning there. I already have a Thompson seatpost. We will see how the comfort level is. You might be right about needing more flex...
Awesome to see you back again! You look great Paul!
I would like to see you someday building a roadie! 😀
Thank you very much. We will see what gets built next...
That headtube badge needs to say "Schwing" as a tribute to your fellow Canadian Mike Myers and his successful film series Wayne's World.
Also, controversial figure but Grant Petersen of Rivendell Bicycle Works seems quite set on steep head angles and loooong chainstays. For crawling along back country roads he might be onto something, who knows. I might have to experiment myself.
Schwinns: I picked up a 1983/4 ish Schwinn High Sierra, I believe this is the first time Schwinn had Giant of Taiwan make one of their bike/frames. It's pretty typical angles and chainstay lengths of those early 1980's MTB PacRim products. Their welding is fair, not near the robot preciseness of the Anlun company's. Frame sticker for the tubing is a generic gold label saying 'Cro-Moly'. So who knows what tubing it is.
I've built just one bike frame in my time, a mess of mixed Reynolds and Columbus of various kinds, taught me how much heat Columbus tubing can handle when fillet brazing. Gary Hale of Early Bikes saved my frame from being scrapped.
Quality of bike frame tubing: I worked a couple years in Burley's tandem contractor's shop, ATP, which eventually became Greengear/Bike Friday. We used True Temper's seamed mandreled Cro-Moly, That was an experience. We used a muffler tubing bender to bend in the transition of the downtube/bottom bracket spreader and the top-tube/steatstay transition. The main frame diagonal was 1.125 straight gauge tubing we ovalized, which caused some issues with TT tubing seams cracking.
I discovered that if you looked inside the tubing you could see where the weld was and if you placed it at 45 degrees to the faces of the ovalizer it would not crack. All the tubes that cracked had been placed in the ovalizer at perpendicular or at 90 degrees to the ovalizer faces. That was a fun solution.
That was fascinating. Brilliant explanation.
Thanks Craig :)
Trial fit the Schwinn badge, but upside down. NNISHCS.
Cut a ‘b’ maybe an inch tall, but file away a curve on the lower left downstroke of the ‘b’ to match the upper right curve of the NNISHCS plate, like a superscript ‘b’ ‘underlying’ the plate
Locate the plate. Mark where the ‘b’ should go. Remove plate.
Braze on the ‘b’
Finish bike.
Mount the NNISHCS plate, it will look like the ‘b’ is underlying the plate.
I’ll send you a sketch.
A nod to history, your mark, a bit of a chuckle. You built a Whippet from only a photograph. That gives you carte blanche to built any dang thing you want, and mark it any way you want. Maybe the uniqueness of the headtube plate and ‘b’ will make the bike like Cormac McCarthy's Olivetti Lettera 32?
Too, thanks for all your years of teaching and the resources you’ve uploaded to the Webz. Solid teaching to help us start making, and correcting our own mistakes.
Hope you stay as comfortable as you can, and that all is well,
Thank you for the class in frame design and construction.
You're very welcome! Thanks for watching :)
always an exciting moment watcching your videos thanks
Thanks very much :)
Very, very interesting 🤔 🙏 thank you. Looking forward to part 2.
Can wait to see the next installment
Really useful insights. Thank you.
Thank you!!
I do enjoy these bike frame videos, it reminds me of when I was a teenager and I built a frame for my A Levels, it was made from T45 steel with a head tube bought from Gary Curtis, I learned to fillet braze and scared lots of people in the class with the loud pop from turning off the gas! it came out pretty good, it survived a lot of dirt jumping and I still have it 21 years later. I wish I knew about ovalizing the tubes though as it was hard going brazing the two tubes together of the same diameter.
If you still have he frame after using it for 21 years, you must have done something right... Not good practice to fillet braze 2 tubes without ovalizing one of them. Thanks for watching!
Another awesome video. It's amazing how much bike geometries have evolved. "Long, low, and slack" seems to be the norm now. And the incorporation of dropper posts have driven seat tube designs.
Well said! Yes, slacker head angles but steeper seat tubes. Thanks for watching :)
That was VERY interesting. Thanks Paul, and Mitch. Les in UK
Thank you Les :)
Great video, can't wait to see the finished frame & maybe a video of you & Mitch out for a gravel ride together?
As for the head badge, it's got to be a Brodie 'B", something tells me you'll not be satisfied with the Schwinn badge 😄 Making it could be another episode!
Great stuff. I'm going get one of those tables and drawing gear for my new home work shop.
I'm only here to see interesting jigs! Great content Paul and Mitch.
I had never given bicycle frames much thought, but this was fascinating to watch. And I realized my own bike has a frame triangle out of a single tube, it was invented by Sparta in Holland. It wasn't a big succes, the crank tube and head tube were brazed on, and those often failed. Anyway, I'm super curious to see this build. Keep up the good work Paul and Mitch!
Thank you. Yes, it sounds like the Sparta might have had some design flaws...
Awesome, thank for taking us on this amazing journey.
Thanks. I'm having fun too!
hi dynamic duo! superb instalment mitch and paul, that schwinn badge
will look ace on your gravelbike frame paul, after several weeks of ebay
trawling for a suitable headstock badge for my best bike i found an old
vintage one with my name `william` so its on there and staying put ,
it has to be circa 1950s french origin, 😊👍
Hey Paul you look great and the gravel will too!
Thanks 👍 Appreciate your comments...
Takes me back to my old technical drawing classes.
For me that was Grade 8!!
Enjoyable & interesting to watch. Thanks Paul.
Hi Paul, how does your frame jig adjust for different BB shell widths? Thanks for the video, love watching your work as always!
Thank you. I have spacers for the head tube and also the seat tube fixture parts of the main jig. Make sense?
@@paulbrodieYes, thank you!
It is magnificent
Thank you!
Energy ✊😎👍
I'd rather see a brodie badge than a schwinn. ;-)
I will think about a "b" for the head badge...
Every thing you do makes perfect sense to me.
I love the full-scale drawings.
What a wonderful gift. Sharing your thought process as you share your design and build. Truly Masterful,in our modern world..sadly lacking such content. Thank you sir.
Thank you very much! Appreciate your comments.
I've jast poured my morning cup of Joe and watched your video, Paul. What an awesome start to my day! Thanks so much for what you and Mitch do.
I've already bought my tubeset 2 years ago, and waiting for you, Paul!!!
Patience.
Can you teach us how to mount the attachments / braze ons for flat mount disc brakes ? Preferably with selfmade through axle dropouts :-)
You're looking healthy paul!!! Great to see.
I saw one of your bikes being ridden in my town Melbourne recently!
rock on
Fascinating as usual. From my perspective of knowing nothing about bikes beyond they looked like a random set of tubes welded together, to this precision (with years of experience and skill) this is more than worthy of any race car construction.
Brilliant and hope you continue for many more revolutions of your bicycle wheels👍👍👍
We build in adjustment for race cars. This needs even more precision. If you have a crooked frame, or one with bad geometry, no amount of setup is going to fix it.
@@nobodynoone2500 Think you missed the "this is more than worthy of any race car construction."
Thanks for watching and commenting. Feels good to be sharing some of my knowledge :)
You make it all look so easy. Always excited to see a new episode.
Glad you enjoy it! And thanks for watching...
That was interesting never realised Reynolds tubing was internally and externally butted.
It 'always' used to be Reynolds 531 was 'best' for motorcycle frames 😃
Pretty sure the twelve thou shorter won't be noticeable (0.3mm)?
you could have used t47 bottom bracket and then the tange prestige would have been long enough ;)
Sighting down the inside of a clean tube you can usually see the butts, if it is intact butted.
I always do rough drawings before autocad versions, and I remember technical drawing on a1 or a0 (yes that old) - this makes me realise that beyond all the computer bits the work has to show the soul - amazing as always and well jel of a stockpile of bike tubing, particularly the prestige stuff (my 1994 cinder cone is the bench mark for me)
I laughed at the Schwinn badge. "I might be building a Schwinn! "
I recall what you said about the old timers when you were building the Excelsior. "I know what you are doing. "
Coming from the man who built a replica of a bike that no longer existed. The Schwinn is a walk in the park. Have at it, can't wait to see it going. 👍
Loved the fork video, really excited to follow along and see how it all comes together Paul!
Thank you.
Super cool. Reminded me of drafting class. That was fun. Even with a broken wrist on my drawing hand. Learned to write pretty well with my left.
Thanks for watching. Yes, what our bodies can do under circumstances is really quite amazing!
Hey Paul, is there any way to learn frame building from you in person anymore? It looks like UFV doesn't offer the frame building course which you instructed any longer.
Thanks for making these video though, they are IMMENSELY informative!
Lol.
I once built a motorcycle around a clutch basket I owned.
I don’t recommend😁
I once started designing a go kart around an air filter that I found. Not recommended either...
Looking good Paul, both the frame and yourself!
Bingo, the video (series) I’ve been waiting for. Thank you👏🏼
Love it :)
Thanks!
So amazing to see you build a bike again
Fabulous! I can't wait to see this completed.
So great watching you going thru old school 👌looking good Paul
Cheers Chris
HI Paul love to see you building stuff and specially bikes! whould you consider to sign and sell the drawing of your Gravel Bike? regards chris
Glad to see your back in the shop and making a gravel bike!
Our interests have paralleled in many ways over the years, motorcycles, bikes, machining, and now health issues as well!
Shopping for a new gravel bike as I type this.
Your certainly an inspiration to keep riding and making stuff!
That was a very enjoyable video! Thanks for posting.
Our pleasure! Thanks for watching :)
Special channel for sure . Congrats 👏👏👏
Thank you so much!
Excellent stuff Paul. Thanks for showing.
Glad you enjoyed it :)
@@paulbrodie Of course i did! And just today i retourned from a 3 day trip with my gravel bike. An old Stevens, not as nice as yours will be, but it suits me. Greetings
Brilliant stuff, thanks Paul!
Glad you enjoyed it...
not bad for an old bloke 😁😁😁😁😁😁
Yes, I am..
G'day Paul,
Thanks for another great video. It's good to see you building another bicycle frame. I'm enjoying thinking about how I would do it, & then watching someone who's done it before.
I think that you've made a mistake with the Front Center & Seat Tube Angle though, particularly as you're using a 1980's Steer tube angle. I get the feeling that modern Steer & Seat tube angles (on DH bikes) are chosen because the Downhill courses are getting steeper. As such, the frames are being designed to stop the Steer angle from going past vertical. That's how I see it, mainly because I'm still riding 1990's to 2010's XC Fishers, & I know that they actually do steer properly. I do prefer the long Stem & Trail with the short Front Center & Chain Stays.
Anyhow, I'm looking forward to the next episode. The Rep from Rocky Mountain will be dropping into the shop today, so I'll be sure to tell him to watch your video.
Thanks again.
Andrew
IMHO, Schwinn could impersonate Paul.
Nice video. Why do you start with a fork then design around it,, rather than at the bb ? Didn't understand how you arrived at length of head tube. Had you pre determined it ?
Thanks
Very hard to design a frame without a fork... Where do you put the head tube? I have made enough bikes for myself that I know I like a fairly long head tube. Thanks for watching :)
Great video, please put your own name on it though.
Nice Raga Edition in the background. Still have the TRS?
Yes, I am riding the TRS tomorrow..
Super cool Paul, thanks for sharing this!
how you get your head round all the angle so. beats me. hats off to Paul. excellent vid as usual thanks
Thank you. I've been doing this a long time, so it has become second natured for sure...
Run the Schwinn badge upside down
Sweet. Been waiting for this to start. Liking the geo overall, actually longer Front Center than I would have thought, but should handle nice. Not sure how tall you are Paul, but if it were me I'd do that ST a bit shorter, even for me at 6'2" with a 35.25" inseam that'd be fairly tall.
Hello, iam a Bike Mechanic and for a long Time iam dreaming of getting thought on how to build Bike Frames by Mr. Brodie in Persona- one of my greatest wishes. But unfortunately iam too far away- greetings from Austria!
Hi! No offense with my question but why didn’t you design the frame from the headtube, then drawing the horizontal tube due to your measure, then the seat tube and its angle, then bb and its height and for last the down tube, that is the only “size less” tube in the front triangle? (And after that of course drawing the back triangle) this is the system I learned from my Master Vanni Losa here in Italy (Losa telai, third part manufacturer for Cinelli, - supercorsa frames -)
I have a 2016 bolt. an 80's Nishiki Rockhound and a Rocky Moutain Cardiac from 96.. among many others.. the frame geo are nearly identical on the three.. I have 700c 26" and a 650b within the three.. why design new? these old ones worked great.
just needed disc tabs on that bolt
What material's you use? Stainless, Aluminium, or alloy?
Schwinn for the win!
Wrong in so many ways.
as a non biker it never dawned on me that bike frames were made from graduated tubes ..
Yes, bicycle technology has become quite sophisticated. We call them butted tubes...
@@paulbrodie
i did wonder what you would produce when you said butt gauge ,,, I thought it may be along the lines of an eyecrometer ,,, as in if it looks right etc etc lol
Nooooo to the Schwinn badge….. A Brodie bike deserves a Brodie Badge! It would be cool to see you design and install an entirely new Brodie badge 👍🏻