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Trans Issues

Spaghetti Power

Spaghetti Power

Just got it firing!
Joined
Jul 1, 2009
Messages
18
Location
Lost in the Oranges
I thought I had my bike sorted out and ready to hit the road but the Italian gods do not favor me. My trans shit itself. Before I tear it down, I was curious if the trans out of an EV would mate to my bike? Would I need to replace the clutch and would the shaft drive spline to it as well. Does anyone have any experience with this sort of adventure?
 
The OEM EV clutch should be just fine if low mileage, and the trans itself will bolt right on. The clutch is a "deep spline" (4mm) as is the input gear to the trans... so be sure to use the whole assy.
 
so that means i will need to replace the whole clutch assembly with an updated V11 and will it bolt into my flywheel?

Would now be a good time to shave some weight off my flywheel? whom do you folks reccomend as a machinest?
 
Correct, or I was assuming you were going to use a whole newer style flywheel assy & plates.

My web partner Ed offers flywheel lightening services... click pic below:

 
So am I to understand that the existing clutch splines would not match the newer trans?

I will check out your buddies flywheel sight later, thanks for the info.

I really just want to ride..... :(
 
Heavy flywheels are great on interstates, but bloody awful in the mountains.
 
I spent many, many years hot-rodding an SP to within an inch of its life including a variety of lighter and lighter flywheels. After about 20 tears I bough an almost bog-stock SP including it's heavy flywheel and finally it dawned on me what a lovely thing it was. I still have that bike and it now has an even heavier Eldo flywheel in! :laugh: .

Lightening the flywheel is a double edged sword. Consider carefully.

As to the gearbox replacement? The earlier boxes are much more robustly built. Wjat is wrong with your SP box? Unless it's some sort of catastrophic failure i'd take fixin' the SP box over using the Cali one.

Pete
 
I had just installed the updated charging system kit on the SP and about 100 miles later I was escorting a customer to the H way when off the gas but in gear, the bike started making some really bad growling type of grinding noise. I assumed that the the rotor had failed and was spinning on the end of the crank. After I installed a replacement rotor it continued to make the noise, seemingly worse.

I put the bike on the center stand, (I had to find one on ebay as the original had snapped) and put the bike in gear and rowed through them till 5th.

The noise happens in 3rd-5th gear.

Two things that may have contributed to the problem
1) when I first got the bike I found that the trans and FD were filled with synthetic. I am told that early big twin trans had plastic cages holding the roller bearings in place and that synthetics ate away at this.

2) the trans breather was pointed down to earth, not up so that the fluid that founds its way there could not go back but dripped out instead. The trans fluid was about .5 ltr low.

I assumed the leak was coming from the trans input seal as there is aleak there as well.
 
the reason I am installing the new tranny is the overall higher gearing it provides. My SP does not seem comfortable beyond 80. It will go and I have taken to 100 but she was definatly not happy.

I am still on the fence about the lightened flywheel as I do love the way she chuffs about. I can open her up in a gear too high and just chug my way up.

I find the older I get the more I enjoy not flying around as fast as I can but just arcing my way through the turns with as little shifting and braking as possible. The SP rewards this, almost demands this type of riding. When I ride with other folks I am always pushing the bike harder then she liked it and it was not as fun. By myself, pure bliss.

This is all a mute point as she is unridable....and with my current work load, I either need to fix this one, and not ride for the rest of the season, or buy something new and ride. I just cannot see me riding anything else right now.

Maybe a nice used Ural Patrol for my two year old....... ;)
 
I know that up through at least the 1983 CAII the transmissions used the good 13 ball metal cage bearings for input and output so synthetic isn't your problem. Also I believe all the 5 speeds have the same rations except for the close ration LeMans SE box. The higher gearing in the newer (1100) five speed bikes is from the rear drive. The 1100s are geared higher because the have enough torque to support the gearing change. If you have ready access to a newer 5 speed use it. Also I'd take the time to rebuild the one you have for possible later use.
 
I guess I read the guzzioloy wrong, I was under the impression that the the top two gears were the same as the Quota (higher) and that these gears were used in all later model Cals.....
 
Spaghetti Power wrote:
I guess I read the guzzioloy wrong, I was under the impression that the the top two gears were the same as the Quota (higher) and that these gears were used in all later model Cals.....
Click to expand...

I could be mistaken as well. At least since you aren't changing the rear drive, your speedometer gearing will be unchanged.
 
I don't think I would go with the higher geared rear drive, your engine doesn't have the torque to run it well. Also the longer swing arm will change your geometry with possibe detrimental impact on handling (longer wheelbase).
 
my utter lack of time has decided the day and I have shelved the SP for the summer. I have too many of my client's bikes to fix to be worrying about mine. It will have to wait until I slow down before I can start work on her.

It is a depressing a scenario as can be for me as I really thought I had worked out all the bugs that come from getting a bike running that has been sitting for close to ten years.

I bought the bullet and bought a pair of happy trails paniers and was all set to weld up the brackets and get my season going when this happened.

I may pick up an old BMW K bike just to kick around for the rest of the summer. I fear any MG I could pick up for my available funds would mean I would just be buying another money pit.

A good, boring, non inspiring but dependable bike may be what I need right now.... :unsure:
 
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