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Old 10-16-2019, 10:52 AM   #11
RIDER675
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Re: Clutch questions

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Originally Posted by tovar View Post
Your 2nd gen clutch most like had worn out washer between outer and inner hub.
Clutch enters right side hole. It's normal for the rod to spin with the lever in?

Could be the washer, I did compare the thicknesses. When I swapped just the hub and washer the disengagement seemed to improve but it was hard to tell. Don't remember if the wheel spun or it clunked harder. The hub turns easy enough I guess, but far from spinning on its own.

Think ive ruled out the adjustment and cable routing, spent many hours just adjusting it.
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Old 10-16-2019, 11:20 PM   #12
Kyalami
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Interesting - I just went through some similar if not exactly the same symptoms on my gen2 race bike. The clutch was not fully disengaging when I pulled the clutch (was sticking for a varied number of seconds before releasing) and so getting the bike to downshift was damn near impossible. Based on what you are describing, as others have mentioned, the first thing I’d check is that the cable isn’t jamming. If you’re confident that isn’t the issue, I’d check the cages carefully to see if something is sticking. I pulled the plates and after fiddling around I found some scoring on the cage where the plate flange fingers meet. What I ended up doing was carefully polishing the metal on the cage where the plates touch with 400 grit to reduce every bit of friction, and that did the trick. It works perfectly now.

For the record - my push rod spins slightly as well. I hadn’t heard about that being a problem (and since I made the above mods it shifts smoothly anyway) but I’m going to check that washer too.

Keep eliminating things one by one. It’s a very simple system so you’ll find it eventually!
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Old 10-16-2019, 11:23 PM   #13
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One more question: assuming you have the bike on a rear stand, is the rear wheel spinning with any force (as in can you hold it still with your hand or no) when you pull the clutch in?
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Old 10-18-2019, 11:17 AM   #14
RIDER675
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Re: Clutch questions

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Originally Posted by Kyalami View Post
One more question: assuming you have the bike on a rear stand, is the rear wheel spinning with any force (as in can you hold it still with your hand or no) when you pull the clutch in?
Interesting, my clutch doesn't start to release on its own though. The rear wheel doesn't even spin in neutral on the stand with the basket from gen1 so I found some dragging is due to gen2 basket or frictions, but ive tried sanding the basket where needed which helped but it looks good now. The used frictions I tried dragged worse.

Tried a conventional motorcycle oil, it caused more drag than rotella synthetic. Clunking into 1st and harder to disengage, while rotella was butter, but when warm I suspect the rotella was making the clutch pull harder, ill have to test this again to make sure it wasn't my hand.
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Old 10-19-2019, 01:24 PM   #15
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Re: Clutch questions

Confirmed rotella t6 and t5 cause the clutch to get much heavier at 200f. It must cause the clutch fibers to expand or stick. This is what I noticed on track that made it impossible to downshift. Makes a surprising difference to how quick the engine spins up, and no clunk into neutral though. I think it should work alright with a new basket or fibers and mc specific oil.


Edit: Did another oil change and found the other oil I tried acted similarly at 212f so the oil had no change, just didn't let the engine warm enough the first time.

Last edited by RIDER675; Yesterday at 02:32 PM.
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Old Yesterday, 11:01 PM   #16
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Okay... so since we are on the oil topic... how full are you filling it in the sight glass? Another thing I’ve learned in my short amount of time on the SV is that quantity matters. My RC51 clutch didn’t give a damn how full it was... on the SV if you fill it to the top, there is too much drag on the plates and it is harder to downshift. I run mine in the middle and it actually makes a big difference. I’m running Mobil 1 10w40 Racing 4 T... have also run the expensive stuff (Motorex) but didn’t notice a difference.

Do you know what detent spring you’re running on the Star shifter? Could also be that....
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