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Birdy is to big once folded. Nice bike, but too big.
Good one !
If there is a folder with Brompton 's fold and Birdy 's ride.....it will be the bike of the decade.
Any Brompton owners care to share if the three speed of S3L sufficient for general riding. Do you miss the limited gears or do you recommend to go for six speed?
Last edited by ddez; 08-19-09 at 11:31 PM.
I want a bike that rides and folds like a Tikit but down to the size of a Brompton (with the cool suitcase) but has the suspension of a Moulton but costs less than 100 pesos but has a lifetime warranty but can change colour according to my mood but can also be a mountain bike but cant get hit by a car and I want it for my birthday which is not for 8 months but I want it TODAY!!!!
oh, and if possible, can I have a Rohloff hub with that?
IRO Mark V Pro, home made bamboo track bike, eddy merckx corsa extra, Airnimal Joey, UGADA Tikit
The new lightweight Rohloff, presumably!
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Chop! The mad Welshman, lost in the urban jungle somewhere between LLanfairpwllgwyngyllgogerychwrndrobwllllantysiliogogogoch and Vladivostock!
A buddy owns one of each.
No contest about folding them , but the Birdy feels clearly faster. I guess it it due the fact that it has the pivot point of the rear swing arm in the chain line, while the Brompton it has it way off the chain line. That will generate "pedal bobbing" which is more or less a waste of energy. Where I work we make MTBs , full suspended XC MTBs are designed around avoiding the pedal bobbing as much as possible, else the bike is not efficient. Then, I guess the brommy flex more because of geometry (the Birdy has a way taller frame and no bobbing). That is an other waste of energy.
Maybe we should start suggesting Brompton to think about raising the pivot point to bring it closer to the chain line.....