Adjustable Crank Arms

Unicycles and Equipment
1

I was thinking about this last night and then I saw the custom coker with adjustable crank arms.

da Vinci Designs makes crank arms drilled at 130/150/170 for tandems and 125/145 kid cranks.

http://www.davincitandems.com/index.html after clicking on the link you need to click on “components”

Has anyone tried this for uni’s?

2

This has popped up a few times - if you do the search, you should be able to find previous threads on the topic.

I think most of the MUni people just blow off the idea because a crank drilled for two or three different settings is going to lose a lot of strength.

The whole benefit of the adjustable cranks is to give you different speeds (cadence ratios). It just doesn’t seem like its convenient enough, to me. To have to take out your wrench (spanner) and remove and then replace your pedals just to change gears isn’t really fun.

3

Re: Adjustable Crank Arms

In article <nbrazzi.d1pyn@timelimit.unicyclist.com>,
nbrazzi <nbrazzi.d1pyn@timelimit.unicyclist.com> writes:
>
> To have to take out your wrench (spanner) and remove and
> then replace your pedals just to change gears isn’t really fun.
>

I’ll tell Greg Harper you said that! Last time I checked, that’s
more-or-less what you had to do to switch gears on his two-speed
uni - ie: get out the spanner - and there’s dozens out there
(including me) who would love the chance to try it out.

============================================================
Gardner Buchanan <gbuchana@rogers.com>
Ottawa, ON FreeBSD: Where you want to go. Today.

4

Adjustable Crank Arms

I was going to let this thread die a natural death but now that its back up… Thanks, I did the search and found it was discussed several times back to at least 2000.

I agree for Muni and trials it doesn’t make much sense, we now have a Coker and was wondering if anybody had any success in using a multi-holed crank arm rather than switching cranks. Being also a tandem enthusiast when I am not on one wheel, I use crank arm shorteners in the stoker position for the kids. Seemed simpler to switch pedal placement than pulling and re-installing cranks.

Doesn’t seem that any are doing this so I’ll save my money on this one.