Cush Drives appeared in the 1930's on European motorcycles. The best type of Cush Drives leave the sprocket & drive chain on the bike when the wheel is removed. This is the most common type of Cush Drive and is found on Jawa & CZ motorcycles. However it does make for expensive rear sprocket replacement, after 70,000 miles, due to the rear sprocket requiring it's own bearing & housing. It took until the 1970's for the Japanese to adopt Cush Drive with Suzuki of the GT380, GT550 & GT750 2 stroke tripples, due to the typically violent nature of 2 stroke tripple power delivery versus drive chains.
My current bike has a crush drive but previous one didn’t, I had no idea this was actually a thing! I just noticed the wheels were a bit different when removing them from the bike and presumed it was just a brand difference hah. Thanks for providing such an informative and concise video!
Brilliant coincidence, my Honda CBF 125 has this very issue. Mechanic made it sound like a big job. Might try this myself or get a new mechanic. Good video. As always.
Easy job to do, the cbf if it has the rear drum brake is kinda a 2 person job for ease, as its a bit fiddly to hold it all in place and get the axle in.
They are made of nitrile rubber, not natural rubber that wd40 may damage so no issues. video here looking at them around 8,000 miles later. czcams.com/video/G0rFWGMGe2k/video.htmlsi=aItjBDiXRaVXC-h8&t=301
My 250 suzuki has one of these. Noticed some play in the rear sprocket with the wheels on the ground and bike in gear and when I removed the wheel to have the tire changed, found that mine was definitely a bit worn as some of the edges where metal contact is made were squished and torn. Probably a few millimeters of play. Hopefully a new one will stiffen it up.
Great instructive video, just one thing though, you didn't mention, pumping the back brake afterwards to reset the rear brake. Not being picky, just mentioning it. Grumps.
Thanks for the video.Please tell does the sprocket body goes fully down touching the metal on the other part or there is a slight gap between the two pieces? Thanks in advance
Although it it true it "can" damage natural rubbers it is fine to use on many oil resistant rubbers. O-rings in chains, rubbers in cush drives and many other rubber parts on motorcycles are made of Nitrile rubber that are unaffected by wd40.
Wouldn't using WD-40 (petroleum based) on the rubber be an issue as it could initiate early break down of the rubber compound‽ Or are the "cush" made of a synthetic rubber-like material such as silicone that isn't affected by hydrocarbon based oils?
I have seen testing of wd40 on rubber and it isn't a real issue. Wd40 claim it is fine to use on rubber so its not a worry for me. As I say I have found no issues you do your own research and decide. You could use a silicon grease instead or just fight it in haha
You have the brake disc down there and you are spraying wd40 , even a small accidental drop will leave you with no brake and contaminate your brake pads . What is advised to do is before putting the cush drive you can spray silicon spray which is safe for rubber , remove any excess silicon with a cloth and then you can install it . Not to be an asshole but people who see this may do the same thing and accidentally spray the disc brake .
How much is too much play dude? My garage just says "it's ok"... riding for 5 years and have to admit I haven't removed a wheel yet! I'm also an engineer 🤣🤣🤣🤣 Just haven't needed to. Thanks for the vid!
Hmmm probably not, people have soaked rubber in wd40 for year's with no affect. Wd40 even claim it's safe on rubber so if it did they would be open to getting sued.
Check out the whole build series here! czcams.com/play/PL-ow7a_42PpROKHUl86riGZktKpTO0x_H.html
Cush Drives appeared in the 1930's on European motorcycles.
The best type of Cush Drives leave the sprocket & drive chain on the bike when the wheel is removed. This is the most common type of Cush Drive and is found on Jawa & CZ motorcycles. However it does make for expensive rear sprocket replacement, after 70,000 miles, due to the rear sprocket requiring it's own bearing & housing.
It took until the 1970's for the Japanese to adopt Cush Drive with Suzuki of the GT380, GT550 & GT750 2 stroke tripples, due to the typically violent nature of 2 stroke tripple power delivery versus drive chains.
My current bike has a crush drive but previous one didn’t, I had no idea this was actually a thing! I just noticed the wheels were a bit different when removing them from the bike and presumed it was just a brand difference hah. Thanks for providing such an informative and concise video!
Cheers Spicy, always look forward to your videos
Brilliant coincidence, my Honda CBF 125 has this very issue. Mechanic made it sound like a big job. Might try this myself or get a new mechanic. Good video. As always.
Sounds like the kind of guy who'll rinse you for all you're worth! I say you do it yourself and get a new mechanic lol
Easy job to do, the cbf if it has the rear drum brake is kinda a 2 person job for ease, as its a bit fiddly to hold it all in place and get the axle in.
Cbf125 is a very easy bike to service .. just buy a workshop manual and you can do almost everything yourself .
Excellent stuff sir!! Thank you.
Really did remove the play compared to the old ones. Looks like a satifying job to do.
Nicely explained 👌
Another very handy video spicy👍
You explained it well, thanks.
Great video. FYI - dish soap or silicone spray would work better than WD40..WD (has petroleum) therefore it will damage (deteriorate) the rubber. : )
They are made of nitrile rubber, not natural rubber that wd40 may damage so no issues. video here looking at them around 8,000 miles later. czcams.com/video/G0rFWGMGe2k/video.htmlsi=aItjBDiXRaVXC-h8&t=301
Spot on this is the exact video I have been looking for informative and great step by step instruction great videos keep up with the good work 👍😊
Happy to help 🙂👍
Another awesome video spicy. Love your content, you've thought me sooo mu h in the last year.
Learned something new today 👍
Just ordered a new set of cush rubbers for my cbf125!
Awesome thanks mate
Really gd video as always
It’s simple I see spicy’s video, I click
90K! YEEHAW!
My 250 suzuki has one of these. Noticed some play in the rear sprocket with the wheels on the ground and bike in gear and when I removed the wheel to have the tire changed, found that mine was definitely a bit worn as some of the edges where metal contact is made were squished and torn. Probably a few millimeters of play. Hopefully a new one will stiffen it up.
Great instructive video, just one thing though, you didn't mention, pumping the back brake afterwards to reset the rear brake.
Not being picky, just mentioning it.
Grumps.
Looking at this makes me realise my V7 could really do with some new rubbers, barely any resistance when refitting the cushdrive at all on it now
yer it is one of the things that goes slow so it can get bad before you notice.
Thanks for the video.Please tell does the sprocket body goes fully down touching the metal on the other part or there is a slight gap between the two pieces? Thanks in advance
Sorry I am not sure what you are asking there.
Any suggestions on removing the hub over the damper from the wheel? Mine is stuck really bad and i dont want to scratch my wheel powder coat
Will you be doing a review for the LXR 125 Euro 5 soon or not planned?
I have the LXS coming at some point but not planning on the LXR as yet.
I'd recommend against WD-40. Probably doesn't reeaally hurt anything, but it can cause rubber to swell and break down. Maybe soapy water!
Although it it true it "can" damage natural rubbers it is fine to use on many oil resistant rubbers. O-rings in chains, rubbers in cush drives and many other rubber parts on motorcycles are made of Nitrile rubber that are unaffected by wd40.
Wouldn't using WD-40 (petroleum based) on the rubber be an issue as it could initiate early break down of the rubber compound‽ Or are the "cush" made of a synthetic rubber-like material such as silicone that isn't affected by hydrocarbon based oils?
I have seen testing of wd40 on rubber and it isn't a real issue. Wd40 claim it is fine to use on rubber so its not a worry for me. As I say I have found no issues you do your own research and decide. You could use a silicon grease instead or just fight it in haha
You have the brake disc down there and you are spraying wd40 , even a small accidental drop will leave you with no brake and contaminate your brake pads . What is advised to do is before putting the cush drive you can spray silicon spray which is safe for rubber , remove any excess silicon with a cloth and then you can install it .
Not to be an asshole but people who see this may do the same thing and accidentally spray the disc brake .
@@spicy110 you can use some red rubber grease
Here have one of these.................👍
Lol bought a bike took of the sprocket the Cush drives are so decayed need to change them soon
Silicone oil spray is WAY more apropriate for assembly of rubber/plastic parts then WD40.
So use that, however if you think this because you think wd40 damages rubber, it doesn't. (Genrally)
How much is too much play dude? My garage just says "it's ok"... riding for 5 years and have to admit I haven't removed a wheel yet! I'm also an engineer 🤣🤣🤣🤣 Just haven't needed to. Thanks for the vid!
QUESO DE MANO!!!!!!!
👍🏻👍🏻👍🏻
Thanks for maje this video. Helps a lot to my
So thats the hit sound i have when i acelerate or whe i shift gear and acelerate it sounds awful like "CLANK"
If you can hear that your chain is very lose and maybe damaging your swingarm.
Mmm is that i also can move the rear sprocket it moves about half inch and my bike is a 2006 i doubt the guy i bought it from changed the cush drive
"Here we go....."
Great.....now I'm going to have Mario's voice in my head all day...... 🤨
Mine looked like crushed Oreos lol, the sprocket fell off immediately when taking the wheel off
Got your moneys worth there haha
Please tell me that you didn't just use your torque wrench as a hammer.
Looked like it was a breaker bar with added grip at the end it most def wasnt a torque wrench
I was about to comment on what looks to be a torque wrench used as a hammer
No that clearly is a breaker bar. 👍
Correct furry!
Don't use WD40 - use silicone spray instead. WD40 will dry the rubber out.
Hmmm probably not, people have soaked rubber in wd40 for year's with no affect. Wd40 even claim it's safe on rubber so if it did they would be open to getting sued.
@@spicy110 water displacement. Unless they have changed the formula. Brake cleaner and IPA dries out the hands.
Jesus and motorcycles
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