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Technically Speaking => Chains & Sprockets => Topic started by: Speedy1959 on Monday, 30 October 2017, 09:30 PM

Title: cush drive replace ?
Post by: Speedy1959 on Monday, 30 October 2017, 09:30 PM
Hi All..
As you may know I am revving up to have my wheels re powder coated Red to match part of the bodywork.
I have bought a full set of Koyo bearings and seals (including the sprocket bearing and seal)..

The bike has done 26000 miles....
Would you recommend I replace the cush drive rubbers in the rear wheel whilst I am at it ?

Thanks in advance..

S.
Title: Re: cush drive replace ?
Post by: froudy on Monday, 30 October 2017, 09:45 PM
If the sprocket carrier is still a tightish fit to get into the cush drive rubbers, I wouldn't bother :onya:
Title: Re: cush drive replace ?
Post by: Hooli on Monday, 30 October 2017, 09:49 PM
Wot he said ^^^^


Mine is fine at more than four times your mileage so I'd be damn surprised if yours was in need of replacement.
Title: Re: cush drive replace ?
Post by: Speedy1959 on Monday, 30 October 2017, 09:54 PM
Thank you both for your fast responses.
Title: Re: cush drive replace ?
Post by: Del on Monday, 30 October 2017, 10:03 PM
Ive had sloppy sprocket carriers on other bikes due to the rubbers weakening

never replaced what I do is get an old inner tube cut pieces to fit in beside the rubbers to take up the slack - works all the time every time

How to video

https://www.youtube.com/watch?v=aNTtmp-N1-E

Del
Title: Re: cush drive replace ?
Post by: Andre on Monday, 30 October 2017, 10:57 PM
I gave them rubbers a long bath in silicone oil (spray can). Put them in a bag and sprayed liberal amount in the bag. Let it sit a couple days, swirling the parts around a few times. Rejuvenated lots of rubber parts that way. Additionally put some silicone grease on them when fitting them in the carrier.
Title: Re: cush drive replace ?
Post by: Speedy1959 on Monday, 30 October 2017, 11:29 PM
Thanks Andre..
I like the silicon grease idea...
Is the Red Rubber grease or something different ?
Title: Re: cush drive replace ?
Post by: seth on Tuesday, 31 October 2017, 12:22 AM
they'll be fine at that mileage
i give mine a spray of chain lub when ever the wheel is off   and not had problems at double your mileage .
:cheers:
Title: Re: cush drive replace ?
Post by: Andre on Tuesday, 31 October 2017, 02:54 AM
Quote from: Speedy1959 on Monday, 30 October  2017, 11:29 PM
Thanks Andre..
I like the silicon grease idea...
Is the Red Rubber grease or something different ?

Castrol's Red Rubber grease is castor base oil thickened with calcium soap.

Silicone grease is a silicone oil with one of several thickeners depending on application.

I prefer the silicone as it seems to be taken up by the rubber. It's been my observation that even wrinkled rubber gains volume and the wrinkles disappear more or less depending how bad they are when bathed for a couple days in silicone oil.

You can get all the above on fleabay, amazon, etc.
Title: Re: cush drive replace ?
Post by: Kiwifruit on Tuesday, 31 October 2017, 03:27 AM
Before the dawn of time when touring with a mate on the back of his TS125 we had a rear wheel failure. This presented a bit of a problem. How the hell were we going to get and fit wheel bearings at a beach far from any shops?
We removed the wheel to find the cush drive now looked like black dust and rubber chips. Major problem !!!!
Well not to us......we went for a walk and found a couple of old holiday homes with no signs of life. One of which had an old worn out tractor tyre on either side of the gate. We were saved......we returned with a serated bread knife. Many hours later we had fashioned new cush drive rubbers and they got us home.
Sorry to the people that turned up on holiday to find their old tractor tyres had been savaged.
Probably never thought about that since then.....haha bit of a trip down memory lane. Thanks Speedy :onya:
Title: Re: cush drive replace ?
Post by: Speedy1959 on Tuesday, 31 October 2017, 03:57 AM
I live in a semi rural location and there are tractors around here...
Now where my bread knife..

Hoo ha ha ha ha haaaa
Title: Re: cush drive replace ?
Post by: Tony Nitrous on Tuesday, 31 October 2017, 04:19 AM
I've made "shims" and packed out the rubbers before to tighten them up.
Not ideal but its free, easy to do and always available.

On stuff like the Busa and King there are aftermarket ones available that are
either firmer or longer lasting? I know the racers and hooligans upgrade them.

Not sure what they (the OEM) cost new but they last OK for me with normal road use. I don't remember having a bad set with as low as 26,000 miles on them.
Title: Re: cush drive replace ?
Post by: Speedy1959 on Tuesday, 31 October 2017, 04:24 AM
Thanks Tony..
I havent even had the rear wheel off yet so I have no idea what the condition is like of the rubbers.
But from what people are saying I reckon I shall leave well alone...

Thanks again for the advice.

S.
Title: Re: cush drive replace ?
Post by: grog on Tuesday, 31 October 2017, 07:12 PM
you worry too much speedy, your bike is a baby, cush drive in another 100th ks, maybe. imo
Title: Re: cush drive replace ?
Post by: Irish in Oz on Wednesday, 01 November 2017, 05:36 PM
The only bikes I really ever had problems with the cush drive where dirt bikes being thumpers. Of coarse a bad wheel bearing won't help.
Title: Re: cush drive replace ?
Post by: Tony Nitrous on Wednesday, 01 November 2017, 06:41 PM
I had a worn set on a ZZR1100-C3, but it had taken a huge amount of abuse
at the drags, around France and everywhere else over a lot of miles.
Title: Re: cush drive replace ?
Post by: GSX1400Convert on Sunday, 11 August 2019, 11:12 AM
I noticed a bit of lag between on and off, rolling off throttle while I was away. I'm wondering if the Cush drive rubbers were the issue. When I see it again, I might check them when I get back.
Title: Re: cush drive replace ?
Post by: Tony Nitrous on Sunday, 11 August 2019, 11:20 AM
They do suffer on high performance bikes.
As I said a while back there's various suppliers of upgraded ones for Busa's / B-Kings etc.

http://www.pashnitmoto.com/cush-drive-p/pingel-sen.htm

I haven't seen them listed for 14's, but as 14's don't share many parts with other Suzuki's they might not be a common item.

Most 14's don't get as many 170hp hard launches as the Busa Boys do.
Title: Re: cush drive replace ?
Post by: Tony Nitrous on Sunday, 11 August 2019, 11:22 AM
Quote from: GSX1400Convert on Sunday, 11 August  2019, 11:12 AM
I noticed a bit of lag between on and off, rolling off throttle while I was away. I'm wondering if the Cush drive rubbers were the issue. When I see it again, I might check them when I get back.

If they are REALLY bad you might be able to tell on the bike, turning the wheel either way with the bike in gear you can see any changes between the Cush drive and wheel. They would have to be REALLY bad and lose though, not just soft.
Title: Re: cush drive replace ?
Post by: GSX1400Convert on Sunday, 11 August 2019, 12:24 PM
Quote from: Tony Nitrous on Sunday, 11 August  2019, 11:22 AM
Quote from: GSX1400Convert on Sunday, 11 August  2019, 11:12 AM
I noticed a bit of lag between on and off, rolling off throttle while I was away. I'm wondering if the Cush drive rubbers were the issue. When I see it again, I might check them when I get back.

If they are REALLY bad you might be able to tell on the bike, turning the wheel either way with the bike in gear you can see any changes between the Cush drive and wheel. They would have to be REALLY bad and lose though, not just soft.

Thanks, I'll check throttle cable adjustments as well.