Drill the clutch basket! - Page 3 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #21 of 71 (permalink) Old 10-23-2012, 08:43 PM Thread Starter
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I drilled mine...no difference.
Wow...hard to believe. What oil are you using?
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post #22 of 71 (permalink) Old 10-26-2012, 01:34 AM
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I'm using Rotella 15/40 in mine, and the CG noise is bad till it warms up. Mine will grab like crazy and sound like a banshee for a bit. My neighbors look at me kinda funny when I take off from my house. I will be drilling mine this winter and I will post pics of the basket and plates before and after. When I drill mine, I'm going to replace the clutch plates and springs.
Those basket holders work great, but is there enough room to get one on the basket with the side cover on?
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post #23 of 71 (permalink) Old 11-10-2012, 02:06 AM
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I read up in the manual and forum, and I see the center basket is the one that gets drilled, not the outer basket. I have a question tho, if the center basket is the one that gets drilled, in theory how does it work to get rid of the cg noise? Is it to help lube the clutch plates? Because the centrifugal force will be throwing the oil through the holes that are drilled in the inner basket onto the plates, not away from them. I could be looking at it wrong, who knows.
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post #24 of 71 (permalink) Old 11-10-2012, 02:14 AM
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I really need to do this soon. It's been getting much worse ever since it started getting colder. Maybe I'll get it done tomorrow.

'95 Vulcan 750 - Purchased 8/2003 w/ 21,124 miles - passed 50K 9/3/15
* VN900 seat * Daytona handlebar * Converted ACCTs to MCCTs * Relocated R/R * Drilled clutch basket * Coastered * Repainted *
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post #25 of 71 (permalink) Old 11-10-2012, 10:21 AM
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If you work the clutch during warm up it lets oil in between the plates to help eliminate some of it.
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post #26 of 71 (permalink) Old 11-10-2012, 12:21 PM
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Quote:
Originally Posted by TSmith68 View Post
I read up in the manual and forum, and I see the center basket is the one that gets drilled, not the outer basket. I have a question tho, if the center basket is the one that gets drilled, in theory how does it work to get rid of the cg noise? Is it to help lube the clutch plates? Because the centrifugal force will be throwing the oil through the holes that are drilled in the inner basket onto the plates, not away from them. I could be looking at it wrong, who knows.
I am with you, do not understand how drilling the basket helps prevent CG.


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post #27 of 71 (permalink) Old 11-10-2012, 03:44 PM Thread Starter
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I read up in the manual and forum, and I see the center basket is the one that gets drilled, not the outer basket. I have a question tho, if the center basket is the one that gets drilled, in theory how does it work to get rid of the cg noise? Is it to help lube the clutch plates? Because the centrifugal force will be throwing the oil through the holes that are drilled in the inner basket onto the plates, not away from them. I could be looking at it wrong, who knows.
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I am with you, do not understand how drilling the basket helps prevent CG.

WilliamTech
Hey guys,
It's simple. Look at the installed plates and friction discs...they fit/sit inside the basket. A small amount of oil never drains completely from the basket keeping the bottom section of plates & discs soaked (saturated) in the small pool of oil. The plates and discs will slip/grab slip/grab slip/grab until the oil is distributed. Drilling the basket allows the oil to drain completely from the basket.
It's a no-brainer...if comfortable wrenching, do it!

Hope this helps
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post #28 of 71 (permalink) Old 11-10-2012, 06:28 PM
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Okay, I see how in theory it's supposed to work. After you park the bike, the holes are to let the excess oil out of the plates. I suppose it will work, and if people have drilled the baskets and it works, I guess it would be a good thing to do. I might do it to one of my baskets this winter and keep it back for when I need to replace my plates.
Thanks VoIP Doc.
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post #29 of 71 (permalink) Old 11-10-2012, 09:29 PM
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this is my opinion of course but i think it would work better to drain the oil off the plates by drilling the outer basket but drilling the inner would allow the plates to get more oil to them while riding and make them last longer

i have only seen one bike with a drilled basket and it was the outer basket that was drilled

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post #30 of 71 (permalink) Old 11-11-2012, 08:30 AM
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I don't have the slightest idea about this but was told by a 30 year motorcycle mechanic that dry plates cause the coffee grinder noice. He is the one that told me to work the clutch during warmup to elimenate this, hence getting the wet clutch plates wet. Has worked everytime for me when the engine is cold(40 degree and less). Castrol 10w40 stopped this at all temps above 40 degree. Seems to me the holes are to let the oil into the basket while the engine is off. The oil drains back to the bottom of the engine when not running, raising the oil level, putting the basket deeper into the oil. Pull the level to disengage the clutch while the engine is not running and it would let oil into the plates and basket, hence oiling the wet clutch plates. If they were intended to be dry it wouldn't be a wet clutch.

My question is: Does drilling the basket at random (free hand) not put the spinning drum out of balance? Drilling consistantly helps but the slightest difference would cause an unbalance, correct?

Last edited by Chuck A.; 11-11-2012 at 11:36 AM.
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