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Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive Transmission, Clutch and primary or secondary drive problems, advice, and/or how tos.

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  #1  
Old 4th May 2007
StrokeII StrokeII is offline
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Default Problems in First Gear

I'm not sure if my clutch is slipping in first or what. Usually happens when the engine is cold but has happened when hot as well. Starting out in first gear, it slips and catches momentarily a couple of times, especially if trying to accelerate into traffic. All I can do is get it into second and it is fine.
I've adjusted the primary chain, the final belt, and the clutch. I use the HD Sport-Trans fluid.Any ideas what else to try? It seems to be getting worse, but other than first, it runs great. Any help/suggestion is appreciated.
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  #2  
Old 4th May 2007
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Did you adjust the clutch cable free-play ?
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  #3  
Old 4th May 2007
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I have the same problem on my '91. I started a thread on it a few months back, but so far no answers. Mine used to do it one time on the first clutch engagement when cold, but it's been happening with increasing frequency. It no longer has to be cold, either.

I don't know if yours is exactly the same as mine. Mine will engage fine, then slip (badly) momentarily while accelerating in first. It ONLY happens in first gear. Sound like yours?

I hope one of us identifies the problem! I don't want to go into it blindly, but I'm planning on disassembling my clutch for a full inspection.

My first question was what the "spring plate" does, but I've learned it's function and don't see how it could be the culprit. Next question - I've heard of a compensator - what is it, and what's it do?
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  #4  
Old 5th May 2007
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For StrokeII - my guess is you will find worn dogs on the gears inside the transmission. Fairly common in the early 2000 years prior to 2004. If it were me, I would take a good look at everything inside the primary (chain, motor sprocket nut, disassemble the clutch) and if you find nothing there, go into the transmission. When you get inside the transmission, make triple sure you check everything and know what you're looking at. A seemingly minor amount of wear on the dogs will cause it to do exactly what you're describing. You might look at the gears and think there's nothing wrong with them. Post pics when you get it out, or have a knowledgeable mechanic look everything over really well.

It makes sense to look over everything external too, like the clutch cable and adjustment and belt and belt pulleys, to make sure there are no problems there before you go into the primary.

For myrl883 - it's not as common on the 90s 5-speeds, but it still happens. I would follow the same advice.

RE: the spring plate (judder plate) - when that thing goes, it usually makes the clutch drag and makes it hard to find neutral.

Good luck.

--Chris
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  #5  
Old 5th May 2007
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You can do an easy test to see if it is engaging 100% For the next few rides when changing to 1st gear at the lights, push on the gear level quick and firmly then let the clutch out so that the bike jolts, let the clutch out twice jolting the bike before leaving the lights and see if you still have the problem.
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  #6  
Old 12th May 2007
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I have had the same probs with my 2000 XL and my 2002 Cyclone tansmission.
I replaced 1st and 4th gears( whose dogs engage to each other) on both trannys by Andrews gears.Thanks to the trapdoor type( how could the moco stop that?) of transmission it has been an easy fix.
Never had that problem again.
Ralph
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  #7  
Old 12th May 2007
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I had the same problem but only had to change the 1st gear sprocket on the secondary gear box tree. You have sometimes to replace the 3rd gear also...

On this pic, you can see where it's damaged :

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  #8  
Old 20th May 2007
franco1973
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I have the same problem on my 92 sportster. Does the same thing in first gear,cold or warm.
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  #9  
Old 20th May 2007
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Quote:
Originally Posted by StrokeII View Post
I'm not sure if my clutch is slipping in first or what. Usually happens when the engine is cold but has happened when hot as well. Starting out in first gear, it slips and catches momentarily a couple of times, especially if trying to accelerate into traffic. All I can do is get it into second and it is fine.
I've adjusted the primary chain, the final belt, and the clutch. I use the HD Sport-Trans fluid.Any ideas what else to try? It seems to be getting worse, but other than first, it runs great. Any help/suggestion is appreciated.
Try adjusting your clutch?!?! (Not the cable, the clutch itself)
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  #10  
Old 6th July 2007
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This message was very usefull, in fact I found the damage in 1st and 3rd gears but the problem now is where I can buy obviusly with better quality and prices. I waith for help, kind regards.
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