Cold Desert Rat
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Posts posted by Cold Desert Rat
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I'm not a hydraulic engineer and don't want to be one.
So I ask hoping and expecting correction.
Regardless of possible range of motion of the slave cylinder, it's the volume displaced by the master cylinder that determines how far it moves.
In other words it can't move further than the master cylinder can push.
Do I have that right? thx
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Does anyone know or have a reference as to how far the clutch rod has to move to disengage the pressure plate?
Different for single or twin disc clutch?
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Hey DOCC,
I like the Oberon. Lifetime warranty, super fancy seal design and many shiny colors. About $150USD
As I recall
AF1 wanted $25 for a new Aprilia cylinder but said it would take four months to get 
I would be honored to have my contribution added to our august assembly. Truly, I am humbled
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A company called Oberon makes a billet version, lifetime warranty, p/n CLU-2800
The smart guys on here will determine if the stock pushrod will work. I have to make a new one anyway, so it's irrelevant to me.
We knew somebody else had to use that cylinder
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A drawing showing how much travel.
I assume the bottom of the piston never comes past the bottom seal.
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I only dimensioned the differences
Oddly the cylinder off my bike had no spring
It fits like it should on the trans.
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The exterior dimensions are identical.
The bolt circle, body diameters and steps, bores, etc.
The Aprilia part only uses one port. One would need a banjo bolt with a bleeder on it. I find that acceptable
There are some other differences.
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It seems all is well.
Did careful measurement using depth mics and using the trans/engine case split as the datum.
There's 3mm+ before the splines can touch the pressure plate. So, that seems good.
The hole in the pushrod button on the new RAM pressure plate is 6mm. I modified my 8mm pushrod to fit which makes it reversible.
I didn't dry fit the trans because I'm pretty sure it's fine.
I'm waiting on the o-ring that goes on the splined shaft under the clutch hub from Harpers.
Curtis is also sending the clutch slave. Then I can confirm pushrod length.
So far all is good. I got a little excited.
Thanks to everyone for all the help!
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2002 Scura 11k miles
replaced original aluminum single plate clutch with new RAM clutch assy from MG Cycle (good folks)
waited forever for new 6spd clutch hub also from MG Cycle. see it in the picture next to the original
they are dimensionally identical except for the 6mm longer external splines on the new guy.
it appears to be too long to even allow the trans to mate with the bell housing.
i suppose i have to machine off 6mm, which i am annoyed but okay with
i searched but didn't find this precisely but my seasrch-fu is weak
anyone come across this?
thank you
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my search-fu is weak, both online and here
has anyone tracked down the coppa italia color codes, or something close?
thank you!
cdr
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it would require a new camshaft, no?
not sure i would call it an improvement.
the pipes are cool.
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....suppose this was inevitable
my apologies if already posted
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Cool.
I will go to pms and confirm address and get stuff out asap.
I'm rural so I don't get into town every day. I will keep you informed.
Honestly, the clutch hub would have been a paperweight for you. The wrench will be useful.
All right. That was easy. Thanks to all!
cdr
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because I'm an idiot I bought a five speed clutch hub wrench, as shown
it too, is useless to me
the other picture shows it overlaid on the RAM (six speed) clutch hub. the pic is terrible, but they are not the same
here's a possible solution.
I can send the wrench to 80CX (which is something he can use)
I can send the hermaphrodite clutch hub to Tom
whatever 80CX wants
cdr
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80CX,
Doc is of course correct. But.
The internal spline is five speed. The external spline is six speed. Won't fit your clutch plate. It's half and half.
80CX got here first, fair and square. But it won't do what he thinks.
TomChri also wants it and knows exactly what it is.
AFAIAC it's 80CX unless he wants to forfeit to Tom.
Ball is in 80CX court. If you don't mind confirming you still want it, it will let me feel like I have served fairness. Or something.
Thanks for everyone's patience. Sorry for confusion.
cdr
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80CX,
I can't say for certain. My guess is no
But research it, I'm often wrong
Still unclaimed
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this came with the RAM clutch/flywheel assembly. it is for the five speed trans.
it is unnecessary for the six speed. it's not even good for a spare
if you want it post: "I want it" in this thread. First post gets it.
I'll pay shipping continental US. shoot me a message with your address after you post here.
if you live in a foreign land you can pay shipping
thanks
cdr
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flywheel is gone
thank you for your interest
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Marty,
That would simultaneously break my heart and make me furious.
The whole shebang is for looks I think.
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I call it a one-Bible rack. Maybe a pack of smokes, too.
Honestly, I just love how it looks.
Now, having seen one in the flesh its limitations are obvious.
And I hate the mounting hardware. Might remake those mounting plates.
I'd be very curious what prodigium wants for a rack. And how did you ever find it?
cdr
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guess my life is now complete
thank you Mr. P wherever you are.
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I had some extraordinary good luck recently finding an elusive v11 part.
To celebrate, and because no one wants to buy it, I'm giving away the lightened flywheel in the classifieds.
First "I'll take it" posted in this thread gets it. Message your shipping address to me.
It fits in a Priority Mail box. I will pay shipping to lower 48. If you are elsewhere, shipping is on you.
Someone plz take this thing. Thank you.
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left came on the bike, stainless steel
right came off 1100 sport as advertised, (hard chrome over) cast iron
I don't have Kevin Cameron to ask, you guys will have to do.
Maybe some of the racers or more technical among us will have an opinion.
Will one keep the exhaust valve cooler by a significant degree? (degree, get it
)
I doubt the difference is significant but it's interesting.
Thanks to the brain trust!
Moto Guzzi 0106 6330 vs. Aprilia 85221R
in 24/7 V11
Posted
Here's another dumb question while I am at it.
Which is the #1 cylinder and why?