The Brompton Fixie Project
http://www.humanpowered.com.au/wp/wp...e2-300x200.jpg
So the time has finally come to unveil the bike I've been dreaming about for the last year or so. Taking LittlePixel's idea, I've cooked up my own version of a fixed-wheel Brompton. Starting with a 2009 S1E Brompton in clear laquer, I built a wheelset around Velocity Aerohead rims with a Phil Wood hub at the rear and a Pantour suspension hub at the front. I'm running on slick Schwalbe Stelvio tyres. I'm running a cut-down Soma Noah's Arc bar, clad in Velo Orange elkhide leather sleeves matched up with a Brooks Team Pro Classic saddle. http://www.humanpowered.com.au/wp/wp...e3-300x200.jpg http://www.humanpowered.com.au/wp/wp...08/8182022.jpg I went with the standard Brompton 54T crankset and a Soma 12T track cog which gives about 70" with my ISO 349 wheels. I'm running a gold coloured YBN half-link chain which allows me to get chain tension and I've modified the Brompton chain tensioner's parts & placement somewhat to make it all work under back-pedalling loads. I have detachable MKS MM-Cube EZY clipless pedals and a slightly modified Planet Bike Stealth Superflash rear light (attached with a Vistalite Cue light quick-release mount) to finish off. I'm running just a single brake with the addition of Kool Stop salmon pads. http://www.humanpowered.com.au/wp/wp...2-682x1024.jpg |
That looks interesting, certainly the best colour;):thumb:
Can we please have some photos of the whole bike? :) |
Beautiful! How do the Eneloops fare in the SuperFlash? If I may make a suggestion, add a V-brake noodle to the brake line to enhance braking a bit.
Great job! |
Originally Posted by bykerouac
(Post 9523388)
Beautiful! How do the Eneloops fare in the SuperFlash?
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more pics plz!
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Very nice. How is the chainline?
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Yes me too.I would really like to see that cut down bar,im looking for a different bar for my S1E.
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YES! This is fantastic work... How's the ride?
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As a fixed gear Tikit owner and lover I have to say this bike is super cool. Great work. As Chiapas said, more pics please!
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Update with some photos:
http://www.humanpowered.com.au/wp/wp...08/8232024.jpg One unexpected result of running Stelvios & no mudguards is that when the bike is parked it can be pushed along on it's wheels: http://www.humanpowered.com.au/wp/wp...08/8232036.jpg Maybe I could use a V-brake noodle: http://www.humanpowered.com.au/wp/wp...08/8232032.jpg The cut down bar, covered with leather: http://www.humanpowered.com.au/wp/wp...08/8232025.jpg Rear hub, spaced 3mm out so that the fixie lockring doesn't foul the chain tensioner: http://www.humanpowered.com.au/wp/wp...08/8232029.jpg |
Originally Posted by Joako
(Post 9529181)
Very nice. How is the chainline?
Originally Posted by LittlePixel
(Post 9531343)
YES! This is fantastic work... How's the ride?
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Thanks for the detail shots!
A noodle goes great there - I did it before I changed to Campag brakes w. drop bolts. What Phil Wood hub is that? looks like a flip-flop. Mine is a Kierin Japanese track spec on with threading on one side only (I thought it was the only hub that would fit the 120mm dropouts. Does that mean your wheel is dished or not? Great bike - nice in raw lacquer too.. |
oh yeah - i also meant to ask how you fixed the interface with the phil allen head bolt and the recess in the chain tensioner... i got a part made - but maybe you just used spacer washers?...
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hmm, I thought most, if not all track hubs were spaced 120mm, even if they are flip-flop?
Once again Lewis, that is a really nice ride, thanks for the pics! |
My Brompton's rear spacing is actually 110mm (ignore my earlier post - dimension mistake ahoy!) which is why I didn't consider more easily available 'usual' 120mm hubs and went for a 110 Keirin hub. I guess the original poster did a bit of cold setting? Am I right?
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Very nice bike, well done.
Nice to see another Aussie who has the SWB bug. PS: Drops would look nice IMHO. |
Originally Posted by LittlePixel
(Post 9550322)
My Brompton's rear spacing is actually 110mm (ignore my earlier post - dimension mistake ahoy!) which is why I didn't consider more easily available 'usual' 120mm hubs and went for a 110 Keirin hub. I guess the original poster did a bit of cold setting? Am I right?
The beautiful thing about Phil Wood is that they'll pretty much sell you anything you want (at a price), I have an AVL412 in case anyone is curious, I'm pretty sure that Pixel is using an AVL411.
Originally Posted by LittlePixel
(Post 9540776)
oh yeah - i also meant to ask how you fixed the interface with the phil allen head bolt and the recess in the chain tensioner... i got a part made - but maybe you just used spacer washers?...
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so, can you skid with this settup? how does backpedaling feel? how is the tensioner holding up?
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I like this very, very much.
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Originally Posted by ChiapasFixed
(Post 9570105)
so, can you skid with this settup? how does backpedaling feel? how is the tensioner holding up?
Backpedaling feels good, I have been learning to ride backwards :-) There is a small amount of take up in the chain tensioner and it seems to be holding up OK under the punishment I'm giving it. |
Originally Posted by Lewis Butler
(Post 9539636)
ECB |
Originally Posted by >>ECB<<
(Post 9576467)
Something I'm curious about--what's that cut-down-circle, galvanized-steel-looking thing on the left stay, with the screw through the middle? A generator mount, maybe?
ECB "This disc is fitted to E-Type (bikes with no mudguards) bikes to stop the front brake cable contacting the tyre when the bars are turned." |
skidding is a good way to stop a fixie fast when you have to... I recommend learning how to do it. Then again, the front brake is usually sufficient, and will stop you faster.
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Originally Posted by Lewis Butler
(Post 9577245)
Interesting you ask, ECB. These parts were floating around on the bottom of my bike box when I took delivery of it. I e-mailed Brompton tech support as I wasn't sure, here is their response:
"This disc is fitted to E-Type (bikes with no mudguards) bikes to stop the front brake cable contacting the tyre when the bars are turned." |
Im thinking of welding cable stops to the top and bottom of my folding bikes handle post.
so theres not so much cable outer flapping about. Would use steel tube from bars to stops instead of the cable outer. will do it when Ive got more practice welding. would be a good thing to put cable stops on this Brompton. Seems like the cable would rub on the main tube and the tyre as it is |
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