Originally Posted by
Andrew R Stewart
A couple of comments- While the vertical capacity of your suspension system might be up to snuff I question the lateral strength. I see no bracing/struts to help with the side forces that turning will produce. I would experiment with side loading your mock up and see if there's much movement.
Trusses where? Unfortunately, the mockup--being built of Merkur--has the slop inherent to a construction set, so my results would be suspect.
The pictures are in the folder
http://www.mrinitialman.com/Standalones/Velo/ if you want to have a look.
Originally Posted by
Andrew R Stewart
The other aspect that I wonder about with suspension is how the drive forces will be sent to the wheels. Suspension means that the driven wheels are a moving target. So a chain drive will see tightening and loosening of the chain. Careful drive cog/wheel travel arc pivot (as in a simple single swing arm) address this but with a parallelogram controlled wheel movement wheel travel path changes differently. two wheeled bikes with driven wheel suspension generally have a chain tensioner (a rear der) in the system to take up/play out chain as needed. Andy
Already have something in mind to deal with that:
VeloSolo - Forged Singlespeed Tensioner Failing that, I would have just gotten a couple of rear derailler shifters and locked them in place.
EDITED TO ADD
Or did you mean something like this?, where pairs of suspension "bars" are joined by a crossbeam at one end (I can't do both ends; due to the wheel)
