When I received my EVOs I noticed the clip to hold the folded bottom tube, I think it is because of the heavier bottom bracket and the previous friction fit not being secure enough for the extra weight.http://cycleforfun.ca/?p=516
Bill
Sara of Ming cycle told us kindly at the last Eurobike:
The reason for the use of the plastic double clamp is the bigger weight of the new bottom tube (due to the weight of the gear box).
Irrelevant for storing, very important for transporting (pushing “her” forwards in folded status), the plastic clamp is much more safe than the old fashioned locking method.
The EVO still can be folded as usual, but the heavy bottom tube might unlock self-acting and, in worst case, destroy/damage the plastic beltwheel.
And btw, this clamp is not really new, it is in use for the Strida mini too:
(Picture date 16. 03. 2008)
Here’s an up-to-date pic of Strida France:
The mentioned reinforcement is also a part of the EN compliant (new) frame version,
more about the EN testing you can find already here:
Thanks Blackstridaaustria for resizing and posting my photos. I also have the EVO in brushed aluminium with the same accessories but with the snow and winter here and Christmas I have yet to get one out of the box and take photos, something to look forward to doing in the new year. Bill
Thanks to BlackStrida for posting the Sunrace/Sturmey-Archer manual for the KS3 3 speed (in September).
Disappointing to see how feeble that manual is - not even an exploded view, unlike the former Sturmey-Archer manuals (or the excellent Schlumpf speed drive manual for that matter). Looks like we’ll have to rely on a brave owner to do a stripdown and report on the internal design pluses and minuses.
Sunrace/SA have been having a lot of trouble recently with their newish S2C kickback 2 speed breaking up and jamming - let’s hope the kickback KS3 proves more solid in extended use.
I might be wrong, but it looks to me that the usage of this plastic clamp makes the lateral movement of the bottom tube useless. If this is the case, then it would be possible to have a different (=more rigid and more robust) rear wheel fixation system, without Belleville washer.
Can the bottom tube of the EVO still move slightly laterally?
Yes you can still clamp it between the two other tubes.
Actually I am still doing this when I put it between seats in train, because it is quite a bit lower then.
In some trains it doesn’t fit with the clamp.
I’m still using the clamp when it’s folded for a long time.
I was thinking there must be some reason they provide the clamp now, but what is it?
Strain on back axis in long run?