Clutch Adjustment problem

Transmission, clutch, chains and belts
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OckMock
Posts: 40
Joined: Mon Aug 17, 2009 5:56 pm
Bikes: 1950 panhead chopper
Location: Pennsylvania

Clutch Adjustment problem

#1

Post by OckMock » Sun Nov 15, 2009 3:38 am

I have a 4speed clutch with 5 finger hub and ram-jet retainer, alto clutches and steels, aluminum pressure plate and BDL 2" belt drive. Im also using a mousetrap eliminator.

After proper clutch adjustment I do the usual - pull the clutch lever and spin the clutch with the other hand. At times the clutch spins freely for a few revolutions. At other times, it drags and feels as if there is a tight spot....or, is almost impossible to spin with one hand.

Ive been noticing that finding neutral and upshifts is getting more difficult as everything warms up.

Could this be a symptom of an improper belt adjustment situation?

I cant understand why, when I pull in the clutch and try to spin it with one hand, its tight for a revolution and then easier to spin with others????

This has me boggled.

Belt is adjusted with about 1/2" deflection when cold.

Got any answers for me?



lockdoc
Posts: 117
Joined: Mon Apr 02, 2007 1:08 am
Bikes: 65 Panhead in a 70 FLH frame
Location: Northeast PA, USA

Re: Clutch Adjustment problem

#2

Post by lockdoc » Sun Nov 15, 2009 3:59 am

I would try adjusting the belt. I was told 3\4" open primary, 1" closed primary. Measured from center top of belt. Mine shifted much better after I loosened mine. The belt and pulleys expand when hot.

Bigincher
Posts: 2818
Joined: Tue Dec 18, 2007 2:10 pm
Bikes: 1941/59 EL
1952 FL
1977 FLH
1994 Fatboy

Re: Clutch Adjustment problem

#3

Post by Bigincher » Sun Nov 15, 2009 3:26 pm

I agree, belt is probably a little tight. I was told that when the belt is properly adjusted, you should be able to rotate the belt 90 degrees at midpoint between sprockets.

Bosheff
Posts: 1206
Joined: Fri Jul 03, 2009 8:23 pm
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Location: Michigan

Re: Clutch Adjustment problem

#4

Post by Bosheff » Sun Nov 15, 2009 6:14 pm

Either remove the belt altogether, or move the tranny as far forward as you can, so as to make sure the belt adjustment is not a contributing factor when the clutch adjustment is made. I run my belt so loose it scares me, but it's been workin like that for over 30 years. Get rid of the 5 stud unit and go back to a 3 stud hub if possible, preferably an original H-D piece. You're not runnin a mousetrap, so that eliminates some headaches. Adjust by the book and you should be O.K. if the rest of the clutch set-up is within service specs....bosheff

OckMock
Posts: 40
Joined: Mon Aug 17, 2009 5:56 pm
Bikes: 1950 panhead chopper
Location: Pennsylvania

Re: Clutch Adjustment problem

#5

Post by OckMock » Sun Nov 15, 2009 7:12 pm

OK..tackled it all this morning....

Loosened the belt til it had about 3/4"-1" deflection when cold.

Then, spun the clutch with one one hand with clutch lever engaged...still a heavy drag and tight spots. So, I pulled the clutch and checked plates. Outer clutch plate seems like it had tight spots when running up and down the clutch fingers. So, I replaced it with another good clutch plate that rides a tad looser on the fingers. Bolted everything up and retightened clutch spring nuts to spec. Then tried it again....NO DRAG!!!!

I also realized I had my clutch cable/mousetrap eliminator adjustment wrong. I didnt have enough freeplay in the cable, thus causing pre-load on the throw-out bearing.

Took it for a spin around the corner...shifted pertect, no clunk into 1st, found neutral OK and easy upshifts.

Hope this did it for good.

If'n when I can afford it, Im abandoning this old clutch setup with a Primo...Im tired of fuckin with this.

lockdoc
Posts: 117
Joined: Mon Apr 02, 2007 1:08 am
Bikes: 65 Panhead in a 70 FLH frame
Location: Northeast PA, USA

Re: Clutch Adjustment problem

#6

Post by lockdoc » Sun Nov 15, 2009 8:51 pm

I went with a diaphragm type clutch setup like the one below. I am sooo happy with it. No more jerking at lights.

http://cgi.ebay.com/ebaymotors/KEVLAR-C ... ccessories

Bigincher
Posts: 2818
Joined: Tue Dec 18, 2007 2:10 pm
Bikes: 1941/59 EL
1952 FL
1977 FLH
1994 Fatboy

Re: Clutch Adjustment problem

#7

Post by Bigincher » Sun Nov 15, 2009 8:55 pm

lockdoc wrote:I went with a diaphragm type clutch setup like the one below. I am sooo happy with it. No more jerking at lights.

http://cgi.ebay.com/ebaymotors/KEVLAR-C ... ccessories
Man, that looks like the deal, right there...!
I'm running the 5-finger hub, aluminum pressure plate, all new plates- both steels and friction. It's smooooth....

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