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-   -   Downtube Mini Suspension Mod (http://www.bikeforums.net/folding-bikes/351466-downtube-mini-suspension-mod.html)

BruceMetras 10-08-07 01:30 PM

Downtube Mini Suspension Mod
 
Just got back from a week in the mountains with my gf ... I brought her hub-geared DT Mini along with my FS... I rode her bike a few times and it reminded me of how much I like the Mini... the only thing that I was never too keen on was the coil spring rear suspension.. seemed to bounce around more than I liked and made some suspension related noises while underway... never bothered her, but she also weighs considerably less than I... since I like elastomer rear suspension blocks with it's inherent dampning qualities, when I got back I decided to see if a Birdy elastomer would fit in place of the coil spring... it does! .. you need to fill about a 12mm gap somehow to take up some freespace ( I whittled up some delrin rod on a little hobby lathe for the spacer), but I probably could have come up with something walking the aisles of a Home Depot or the like (but without the satisfaction of cobbing something up from scratch). Anyway, I like the improvement. It's totally quiet and doesn't bob .. this setup can also be adjusted to practically 'lockup' any rear suspension movement... I used the softest Birdy elastomer (yellow). Pictured is the stock spring, the delrin rod that I made a spacer from and an assortment of elastomers ..


http://farm3.static.flickr.com/2359/...ef4618f063.jpg

invisiblehand 10-08-07 05:17 PM

Sweet mod Bruce.

-G


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