Look @ how Fuzzyon the inside (Furry) did his own anti-lock up fix or they sell one on SleezBay .12.00$ And as for tension stuff , arch tensioners werk well. MBreble has a couple different sizes. (carry on)
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Arch tensioners or something home made definitely work great.
I think the chain has to be without much slack at all
before the spring tensioner is added, so that the spring tensioner is only damping out a few rattles and when the spring is defeated by the bump start there isn't much slack anyway. It does not require a lot of spring tension to damp out the rattles and you'll go faster, particularly when you're pedalling, if the spring tensioner isn't overly strong.
Using
only a spring tensioner (particularly with no limit of travel!) lets the chain go slack when the bump start
inevitably defeats the spring, and all the slack goes to the upper run of chain.
The chain usually needs to be lifted over the chain stay on most bikes anyway, and that is best done by the arch tensioner as it is closer to the ideal position, further back.
The epoxy chain retainer is a good idea anyway (I didn't invent it!) for extra security. You can fill up the space in the cover too. I just used hot melt glue for that because it doesn't get as much heat as the crankcase side.