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80 GS1100ET: Modify Clutch Hub to Use Extra Fiber???

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Hi!

It has been posted a few times on OSS, on Dragbike, etc that some people have run their bikes without the wave washer/piano wire setup at the bottom of the clutch inner hub.

modifiedclutch.jpg


As Gribley mentioned on OSS:

Its an extra fibre plate. Once the area shaded pink is machined away, the wave washer, seat and wire clip are discarded.
The extra fibre plate fits in place of the wave washer and seat, between the existing back steel plate and the newly machined face of the hub.

Has anybody here tried this mod? What are the advantages and/or the disadvantages of doing this?

Would this be desirable or non-desirable on a street bike ... and why?

Thanks! :)
 
I dont know why you would do this unless you were making mondo power, and even then why not use a lockup clutch?
I am running new steels and stock fibers in mine with a mix of ebc and barnett springs and it doesnt slip at all. I dont expect any problems with the engine upgrades either, if there is some slip, I have another 3 barnett springs for it.:cool:
 
gearhead13 said:
I dont know why you would do this unless you were making mondo power, and even then why not use a lockup clutch?
I am running new steels and stock fibers in mine with a mix of ebc and barnett springs and it doesnt slip at all. I dont expect any problems with the engine upgrades either, if there is some slip, I have another 3 barnett springs for it.:cool:
Click to expand...

My clutch is not slipping, etc.

I have asked this question because I have seen it mentioned more than once on Dragbike.com and also on OSS.
I'm hoping that someone who knows about this mod will give us some insight.

Note: Why purchase and use a lock up clutch when the only thing required would be to add the mentioned extra fiber plate (...if this is a good mod)?

Thanks!
 
Maybe I'm confused but doesn't Barnett or someone sell an "extra plate" kit already? And didn't the 83 1100 use a different basket with an extra plate? And don't those extra, thinner plates ruin the baskets by gouging them up?
 
TheCafeKid said:
Maybe I'm confused but doesn't Barnett or someone sell an "extra plate" kit already? And didn't the 83 1100 use a different basket with an extra plate? And don't those extra, thinner plates ruin the baskets by gouging them up?
Click to expand...
It's not the thin ones.
The inner hub is machined in order to let you use a 10th fiber plate (the same thickness as the others in the clutch). You therefore end up with the original 9 "thick" metal plates, and 10 "thick" fiber plates.
 
TheCafeKid said:
Maybe I'm confused but doesn't Barnett or someone sell an "extra plate" kit already? And didn't the 83 1100 use a different basket with an extra plate? And don't those extra, thinner plates ruin the baskets by gouging them up?
Click to expand...

From what I've read about the '83 GS1100E clutches, it wasn't as much as the plates were thinner, it was because they were steel backed fiber plates where as the earlier and later clutches had aluminum backed fiber plates.
 
sedelen said:
From what I've read about the '83 GS1100E clutches, it wasn't as much as the plates were thinner, it was because they were steel backed fiber plates where as the earlier and later clutches had aluminum backed fiber plates.
Click to expand...
I'm under the impression that on the 83 they are also thinner ... because of the extra plate.
Thanks!
 
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