clutch upgrade

[rbig1]

well need to upgrade clutch or replace discs. as long as you drive normal it dont slip. wanting to pull trailer so it needs changed whats out there. cost is important no need throwing gold at old bike. that said will keep till not fixable.

[Wizard765]

there are at least 3 possible solutions depending on what the problem actually is.. You may get away with just getting beefed up springs. You may just need the bottom plate or you could replace all the plates.. Skydoc_17 has kits either way.. i would see what he has to offer and go from there..

[Sylvester]

In 185,000 miles I have only replace the clutch spring at about 50 k. The discs were in tolerance and all has been good since then. I installed the V-max spring.

 

[uncledj]

I just doubled up the oem "wave" style spring.

It made for a heavier pull on the lever, which doesn't bother me a bit, but now she'll pull the front wheel when hard shifting from 1st to 2nd, and no slippage EVER.

[Goose68]

I did the skydoc upgrade and it has worked very well.

[bongobobny]

For the 1st Gen MK1, Barrett has a HD spring set available...

[Pegasus1300]

Your 83 has a different spring then the 86 and on.You have 6 springs and you can get a heavy duty spring for that seet up from Barnett. Either them or Sky doc will have your plates.

[Snaggletooth]

Did my '84 back a couple years ago with Skydocs clutch upgrade kit changing out the half disk and new springs. Mine had just started to slip in 5th when cranking on the throttle.

 

Been working great with no slippage at all and pulling a trailer a lot over the last 7 months. Very good fix for a minimal cost.

 

From my Droid wherever I may happen to be at any given moment.

[naturbar]

I did the skydoc upgrade and it has worked very well.

 

Ditto.... Pretty easy job and if you have questions, Earl (SkyDoc) is more than helpful.

[greg_in_london]

I was a cheapskate and put a washer under each spring, but then if I had stopped using oil with a friction reducer I might not have had a problem anyway. In any case it only slipped slightly on full bore throttle and at 3,500-4K revs, which I didn't use much. I pull a big sidecar and often a trailer (though it's been sitting for too long now :-( )

[banzai7863]

Hello everyone.

 

Im new to the site and had a question on the clutch topic. Does anyone know if the 1200 clutch basket will fit the 1300 motor? The 1200 has a 6 spring set up as opposed to the flat spring used in the 1300. My brother had a 1200 venture that would pull the front wheel off the ground under hard acceleration and my 1300 seems to slip quite a bit under load. Was thinking about using the 1200 clutch assembly as opposed to a Barnett conversion kit.

[Prairiehammer]

Hello everyone.

 

Im new to the site and had a question on the clutch topic. Does anyone know if the 1200 clutch basket will fit the 1300 motor? The 1200 has a 6 spring set up as opposed to the flat spring used in the 1300. My brother had a 1200 venture that would pull the front wheel off the ground under hard acceleration and my 1300 seems to slip quite a bit under load. Was thinking about using the 1200 clutch assembly as opposed to a Barnett conversion kit.

 

Welcome!

 

For what it is worth: the diaphragm clutch spring is used on the 1200 V-Max from it's inception. The same spring as on the 1300 Ventures. Yamaha apparently thought the diaphragm style was better at transmitting the increased power. Just sayin'.

 

Personally, I prefer the simplicity of the diaphragm style. With time, all springs, whether compression coil (as in the 1200 Venture) or diaphragm style (as in the 1300 Venture and the 1200 V-Max) will suffer fatigue with resulting loss of compression capability. Perhaps it is time to change out the diaphragm spring on your 1300 for a new stock spring or an upgraded spring from Skydoc?

I had slipping on my '90 after just 20K miles, but it WAS more than twenty years old. Note that the spring is under constant compression, even while sitting. I replaced the fatigued stock spring with the spring from Skydoc and the slipping stopped. Some have doubled up the stock spring ("Double-D mod" with another stock spring) and have eliminated the slip.

Edited January 2, 2014 by Prairiehammer

[Flyinfool]

I was a cheapskate and put a washer under each spring, but then if I had stopped using oil with a friction reducer I might not have had a problem anyway. In any case it only slipped slightly on full bore throttle and at 3,500-4K revs, which I didn't use much. I pull a big sidecar and often a trailer (though it's been sitting for too long now :-( )

 

If you are rarely hitting 3500 - 4,000 RPM you are lugging the engine. 3500 - 4000 is where it like to cruise at and acceleration like to be closer to 5000. Especially with a big sidecar or trailer. When pulling a trailer I seldom let it get below 4000. These engines LIKE to rev, you wont hurt it any.

 

Hello everyone.

 

Im new to the site and had a question on the clutch topic. Does anyone know if the 1200 clutch basket will fit the 1300 motor? The 1200 has a 6 spring set up as opposed to the flat spring used in the 1300. My brother had a 1200 venture that would pull the front wheel off the ground under hard acceleration and my 1300 seems to slip quite a bit under load. Was thinking about using the 1200 clutch assembly as opposed to a Barnett conversion kit.

 

Not all 1200s had the 6 spring setup. I thought is was only the 83s.

I am not sure if you can swap over a clutch basket from the 83 to a newer bike with out also making some other changes.

 

The older setup with the 6 springs will also slip when the springs get old and tired. The easiest thing to do is to just replace your spring with Skydocs_17s heavier duty one. As long as you have not been slipping for so long that you have now worn out the clutch.

A micrometer will tell you if the plates are worn out. New plates are 3mm (0.1181 inch) thick, worn out is 2.8mm (0.1102 inch) thick. If the steels are blue they should be replaced.

[Prairiehammer]

Not all 1200s had the 6 spring setup. I thought is was only the 83s.

 

Sorry, Jeff, but all the 1200 Ventures had the six coil compression springs from the factory.

[greg_in_london]

@ Flyinfool

If you are rarely hitting 3500 - 4,000 RPM you are lugging the engine.

 

I didn't say I didn't hit those revs, though I do like the lazy tune of the engine and peak torque is just over 3K, which makes that or a little above an easy cruising speed to hold (60mph is the legal towing limt here, or 50mph off of dual carriageways). It's just that I don't often pull away on full bore throttle, so if the throttle was 3/4 or less, or the revs above or below 3-4K, the clutch did not slip, which meant I could put off doing anything about it for ages. The washers did help though.

 

Actually, it REALLY is that low down torque I like - I'm happy to run through the rev range, but feel that I'm proving some kind of point when I'm keeping the revs up - possibly the engine sounds louder with sound bouncing off the sidecar...

[rbig1]

well got my upgrade kit from skydoc today now if it would just warm up. still waiting on my waterpump kit and thermostat with housing. wanting to change all radiator hoses also.

[Venturous Randy]

Well, at least you have some reasonable excuses. I have a big stove out in my garage and plenty of firewood and still can not muster up enough energy to go out there. I also have plenty I need to do.

RandyA

[rbig1]

I have a propane confection heater but need to make a area to work on my bike. ttwo trucks in pieces to cycles 3 tool boxes and pile of lumber and tools every where o did I tell you I hord tools not kidding y'all..

[jasonm.]

Sorry, Jeff, but all the 1200 Ventures had the six coil compression springs from the factory.

 

I replaced my 1300 diaphragm design with the older 1200 design. this allowed me to put in stiffer barnett springs...to my liking. Way at the begining of my ownership with only 5k on it when I got it.I like a stiff clutch lever. My plates finally glazed @60k. Which is the typical issue. Some like using sandpaper to "clean" them up. I just replaced the plates...heck it was cheap 10+ years ago. I used "K-G" brand.