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General Category >> Rubber Side Down! >> Rubber dampers on rear hub
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Message started by Eegore on 11/08/17 at 09:11:33

Title: Rubber dampers on rear hub
Post by Eegore on 11/08/17 at 09:11:33

So I'm having the bikes torn down for the winter and one of the shops called asking if I wanted to keep the reinforced rear hub that Dave made. It's a reinforced bushing that removes the play on the rear pulley from the rubber dampers.

The shop indicates that the rubber dampers are by design due to how the bike shifts. Basically a completely solid rear hub causes more wear during the shifting process from what I gather.

What do you guys think? I'd test it out but I think it would take two long and I have other tests going on with the bikes that haven't been completed.

Title: Re: Rubber dampers on rear hub
Post by verslagen1 on 11/08/17 at 09:39:58

Dave's hub takes the wobble out of the hub, and should not lock up the hub.
Dampers are still in operation per design.

They may take jerk out of a crappy shift, but they are in there for dampening the power pulses of a big single.

Title: Re: Rubber dampers on rear hub
Post by justin_o_guy2 on 11/08/17 at 09:45:11

Dave knows what they do and why they are supposed to be there. I'd be shocked if he made a solid hub.
Mine is fully functional and uses the dampers.

Title: Re: Rubber dampers on rear hub
Post by Dave on 11/08/17 at 11:58:04

The bushing that I added to the pulley hub takes out the pulley "wobble" and helps keep the rear pulley in proper alignment with the belt.

The bushing does not alter the ability of the hub to "rotate" and use the rubber dampers as they were designed to operate. (Hopefully somebody followed my directions and greased the bushing before assembly).

http://i60.tinypic.com/29axgzt.jpg

Title: Re: Rubber dampers on rear hub
Post by Eegore on 11/08/17 at 14:57:07

Ok that makes more sense.

As for greasing the bushing I don't recall anything being said about that, and couldn't find it in the saved correspondence so there's a good chance that was never done.

When the new one is installed next year I will make a note to have it greased.

Title: Re: Rubber dampers on rear hub
Post by piedmontbuckeye on 11/09/17 at 05:54:29

4C5F4849565B5D5F540B3A0 wrote:

I think all bikes need some sort of "buffer" between the trans and the rear wheel to take up the solid jerks that are there when one hits a bump or slips the rear wheel when accelerating or simply transmission of power from trans to wheel. The dampeners provide that cushion. Not having them would be like an automobile without springs. Bang Bang Bang.....

Title: Re: Rubber dampers on rear hub
Post by Dave on 11/09/17 at 07:53:57

Suzuki has cut a lot of corners when they built the Savage.....so I would suspect that they also would have eliminated the cushion hub if they felt it wasn't needed.

The bushing I made allows the cushion hub to still rotate in the way it was designed - all the bushing does is take some of the eccentric load off the pulley hub bearing, and eliminate the "wobble" that develops as the bearing wears).

Title: Re: Rubber dampers on rear hub
Post by piedmontbuckeye on 11/09/17 at 08:28:34

1B202D3A2B273C3A2129243B480 wrote:

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Great job! I admire that you do so much and also share that with us. THANKS!!