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My reasons for getting this bike are “two fold”

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My reasons for getting this bike are “two fold”

Old 09-08-10, 11:09 PM
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jahwind
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My reasons for getting this bike are “two fold”

Hello,

I bought my Citizen Tokyo in June 2010 after doing some initial research on this, new to me, area of cycling. My reasons for getting this bike are “two fold”. First, as an alternative way to get to work, and second as a fun project to utilize some of the nice used spare parts I had laying around to make something of this ultra small entry level folding bike.



My custom Citizen Tokyo.




On One Midge Bars, Dia Compe brake levers, stem adapter, and 110 x 115 deg. Salsa stem.



I purchased a Wheels Manufacturing derailleur hanger which sits on the axle with Ultegra short cage derailleur, and a 11-30 freewheel.
The gear inches are 63.6, 53.8, 46.7, 38.9, 33.3, 29.2, and 23.3.




XTR V Brakes, 172.5 FSA Compact Crankset with 52 tooth ring, and Egg Beater pedals.



I keep an allen wrench handy to fold the bars down for a more compact fold when traveling on the bus or putting in the trunk of my car.




Front and rear views of the fold. The Midge bars tuck in nicely. The bungee cord keeps the front wheel in place.



It rolls quite nicely and it has been through the food market on a number of occasions.
It weighs in at 25.5 lbs.

That is where the project is at the moment.
More changes to come.

JahWind
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Old 09-09-10, 07:51 AM
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Looks gnarly, kudos.
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Old 09-09-10, 08:15 AM
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Very nice work jahwind, I'm inspired!
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Old 09-09-10, 11:07 AM
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Well done!
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Old 09-09-10, 11:50 AM
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...I purchased a Wheels Manufacturing derailleur hanger which sits on the axle with Ultegra short cage derailleur...

Does the Tokyo Citizen not come with a derailleur hanger already built into the frame?
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Old 09-09-10, 01:20 PM
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Does the Tokyo Citizen not come with a derailleur hanger already built into the frame?
No, unfortunately the hanger is integrated with a low end rear derailleur that mounts on the axle. I had to look through about 100 different pictures of hangers by Wheels Manufacturing. I was lucky to make a good choice first time.

JahWind

Last edited by jahwind; 09-10-10 at 10:42 AM.
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Old 09-09-10, 03:14 PM
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Nice, I nearly a carbon crank on one of my folders, but the same FSA on one of my folders. High cost of Campaq 54-56t cog plus lack of compatible chainguard put me off using that partiular carbon (ebay) crank in the end.
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Old 09-09-10, 03:19 PM
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you know you guys are nuts .....






in a good way
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Old 09-09-10, 06:51 PM
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Originally Posted by brakemeister View Post
you know you guys are nuts .....






in a good way
thor
Coming from a guy who put a belt drive on a Dahon.
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Old 09-09-10, 07:19 PM
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Phwoarr! I wish I had some nice parts lying around!

But how does it ride?
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Old 09-09-10, 11:06 PM
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But how does it ride?
I must say it is a purpose built bike. So it is reserved for getting to work via bus or bike shuttle where I would carry it on board folded.



As seen above my commute is 4.5 miles round trip. There is a .25 miles in the beginning before the bus with a short steep out of the saddle climb. Then a bus ride to the top. In the afternoon is the big downhill descent where I reach over 30 mph on a bike path dodging squirrels the whole way. I find that the bike is very stable at all speeds. Being a folding bike (an entry level one at that) I am careful not to be pulling on the bars too much or putting too much stress on the front end during heavy braking. I am 5'9" tall so I've had to adapt the cockpit the best I could. As mentioned above I have a 110mm stem and the saddle pushed all the way back. I have no complaints will the stability and handling of the bike. However, I have no desire to ride my entire commute on this bike. I reserve 2 or 3 days during the work week for the full route of 24 miles round trip on either my road or CX bike. I use the folder the other other days, or in foul weather, as rest days. It has taken a bit of adaptation but I'm feeling more and more comfortable with the riding position and out of the saddle efforts are not too different from my other bikes.

I do notice a bit of wobble in the rear wheel at the high downhill speeds. It is just mostly annoying, however, being someone who likes to have my bikes "spot on", it is high on my priority list to fix. I'm not sure if it is slightly out of true or maybe a slightly bent rear axle which my LBS tech had noticed while pulling the freewheel.

The only other issue is the 53" gear (6th gear) tends to skip under load. Amazingly enough, this is the gear with the absolute straightest chain line of all the gears. Every other gear works fine, even the granny with the largest cross. That is the only flaw that I need to solve otherwise it does everything it should do for what it is. The length from axle to BB is only 13.75 inches which is quite short. I'm not sure if that might be part of the problem. Any ideas on this would be welcome.

Take care,
JahWind

Last edited by jahwind; 09-10-10 at 07:19 PM.
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Old 09-15-10, 09:16 PM
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Wow, what a makeover! Tempts me to do more work on mine.
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Old 09-16-10, 09:45 PM
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Originally Posted by JCFlack View Post
Wow, what a makeover! Tempts me to do more work on mine.
Thanks, I'm glad you like it.
I got some ideas from your past experiences working on your Tokyo's gearing .

Take Care,
JahWind
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Old 09-19-16, 07:41 AM
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How do I replace the stem?

Thank you this excellent post. I've already replaced the cassette on my Tokyo with a 7 speed 11-28 which has made it faster. What I want to do next is change out the stem so I can increase the distance from the seat to the bar and put on a moustache handlebar. However, the stem is odd. It has a groove in back to make the stem stay straight when mounted into the upper telescoping part of the headset. Was yours like this and how did replace it. Thanks you for any help you can share.
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Old 09-19-16, 12:53 PM
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Originally Posted by jahwind View Post

The only other issue is the 53" gear (6th gear) tends to skip under load. Amazingly enough, this is the gear with the absolute straightest chain line of all the gears. Every other gear works fine, even the granny with the largest cross. That is the only flaw that I need to solve otherwise it does everything it should do for what it is. The length from axle to BB is only 13.75 inches which is quite short. I'm not sure if that might be part of the problem. Any ideas on this would be welcome.

Take care,
JahWind
Fun project!

One or two days ago I was reading trough some threads in one of the other forums (not folding). I remember somebody complaining about the same issue- chain slipping when in a straight line. Somebody suggested that the rear derailleur did nok take up the slack enough. Suggested was chain too long, weak spring, not long enough cage.. I would expect the chain is new so not worn. Just passing on what I can remember. Keep us updated
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