Tomos A35 transmission issues

Buddy Shirey /
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Ok so I've just gotten my bike back together since tearing it down last October after a wrist pin clip killed my cylinder.

It's been completely rebuilt and I've slowly gone over everything over this past year. New crank bearing and seals as well as a new final drive gear bearing. New wiring harness. New everything.

So I finally start it yesterday and immediately the pedals start spinning backwards as I rev the engine. I assume that my claw collar spring isn't seated right. So I take it apart and try to reseat it and get the same results over and over again. I must have cracked open that transmission like 10 god damn times yesterday getting the same results each time.

The last time I did it I followed some advice I found in a post on here and took special care to keep pressure on the pedal shaft pressing it towards the drive gear while I put the clutch and cover back on as well as the outside pedal spring and arm. When I go to start it, it starts up great and the pedals didn't spin. You know what else didn't spin, the back wheel. As in I give it gas and nothing happens at all except a revving engine. Pedaling still moves the bike forward. So I pull over to take a look at it (only gone about 200' down the street) and while im doing this the pedals catch again spin backwards and hit me in the back of the leg. Fun stuff.

Anyway that was my last attempt before calling it a night since my leg now had a gnarly scrape and it was about 2 am.

I've tried placing the spring very carefully multiple times and I've searched the forums and read a lot of posts and all signs lead to that stupid ass claw collar spring at least from what I've read. I've tried 3 different pedal shafts and 3 different claw collars as the first one did have some wear on the teeth on one side. Also tried two different countershafts as well as a number of different shim combinations on the pedal shaft since the tomos manual says "shim as needed". I do have another clutch bell but I haven't tried it. The one that's in now is the same one that it had when it died about a year ago and never had any issues. Also I did check the one way bearing and it seems fine.

Im baffled. I've taken apart and reassembled an A35 transmission more times than I can count now and I have never had this happen. In fact this is at least the third time I've assembed this particular bottom end as it came to me as a box of parts and I've now rebuilt it twice since first receiving it.

What am I missing? Is there something else I can check? I've spent almost a year building this bike and meticulously going over everything since the cylinder took a shit last October. I just want to ride it again before winter comes.

I hope someone on here has an obvious solution that I'm just not seeing.

Here's a pic of the bike for your enjoyment.

15359972050168113632862200174415.jpg
This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  Tomos A35 transmission issuesTopic by: Buddy Shirey Buddy Shirey 09/03/18 02:08PM
  Re: Tomos A35 transmission issuesRe: pat splat pat splat 09/03/18 05:02PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/03/18 05:13PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/03/18 06:47PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/03/18 07:50PM
  Re: Tomos A35 transmission issuesRe: Tomos A35 Tomos A35 09/03/18 11:31PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/04/18 08:47AM
  Re: Tomos A35 transmission issuesRe: pat splat pat splat 09/04/18 08:13AM
  Re: Tomos A35 transmission issuesRe: Tomos A35 Tomos A35 09/04/18 12:59PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/04/18 01:07PM
  Re: Tomos A35 transmission issuesRe: Tomos A35 Tomos A35 09/04/18 11:00PM
  Re: Tomos A35 transmission issuesRe: fred sams fred sams 09/05/18 02:33PM
  Re: Tomos A35 transmission issuesRe: P D P D 09/05/18 04:08PM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/05/18 07:31PM
  Re: Tomos A35 transmission issuesRe: pat splat pat splat 09/06/18 08:11AM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 09/06/18 06:53PM
  Re: Tomos A35 transmission issuesRe: Victor Black Victor Black 09/24/18 10:59AM
  Re: Tomos A35 transmission issuesRe: Buddy Shirey Buddy Shirey 04/06/19 12:52PM
  Re: Tomos A35 transmission issuesRe: Erica Shoffstottle Erica Shoffstottle 06/24/20 11:20AM
  Re: Tomos A35 transmission issuesRe: pat splat pat splat 04/06/19 07:05PM

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