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Making clutch stronger

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Making clutch stronger

PostAuthor: Arjay » Wed Nov 06, 2019 3:09 pm

Hello all.

On my 96 xv1100 it has a disc with prongs for a spring. Has anyone had success with strengthening this arrangement by replacing with new prong disc or the individual springs. It looked like either would work.

Also just food for thought, could I double up on the prong disc? Another thought is I wonder if its possible to stuff the basket with one or two extra plates. My thinking is one extra metal plate next to another maybe would work.

Just wondering if anyone has tried it.

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Re: Making clutch stronger

PostAuthor: Arjay » Wed Nov 06, 2019 10:28 pm

Here is an example of clutch spring/plate I have. Are these weaker than the normal coils?

https://www.wemoto.com/bikes/yamaha/xjr ... hragm_type

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Re: Making clutch stronger

PostAuthor: nanno » Thu Nov 07, 2019 12:52 am

You can always convert it to a 9-disk clutch, by shortening the studs and running a XV750/920/(Euro)1000, i.e. Gen1 pressure plate and swap out the first steel plate in the clutch basket (the one underneath the steel wire) for a standard steel plate. (There's a lengthy post with pictures on my blog on how to do it.)

If your bike is standard otherwise, I would recommend to adjust the clutch correctly OR get new clutch disks.Usually you have to swap out the carbs and do some other things to get into the kind of performance regions where the clutch actually can't do its job properly.
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
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Re: Making clutch stronger

PostAuthor: Arjay » Fri Nov 08, 2019 7:49 pm

I replaced the friction plates only. But this did not resolve the occasional slip it has. Very slight moment at gunning the throttle harder than usual. It doesnt slip in normal riding, just a little when getting on it.

Ill look into your recommendation. I see other post about using 750 heads on the 1100 and it ups the compression. I guess the stroke is longer on the 1100, so it compresses more. My understanding is it can boost the hp up to 90 about but may need porting to increase flow. Just food for thought for now. I have extra 1100 engine to tinker on.

Thanks for the info.
Rj

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Re: Making clutch stronger

PostAuthor: nanno » Sat Nov 09, 2019 7:53 am

Yup, high 80ies is absolutely doable with this combo (700/750 heads on 1100 engine). As the smaller ports shift the powerband down, it makes the performance-increase felt at least twice of what it really is. :cl: Which turns it into one of those "why didn't I do this earlier things" as it gives some (admittedly notable) increase in terms of peak power, but more importantly the engine becomes more elastic where it really counts - between 2500 and 4000 rpm, which is where you usually use the engine the most.
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
Sex: Male



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