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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Engine - all topics related to the Motor » Primary Drive and Transmission » Transmission.... « Previous Next »

What must be done to get the taller gearing for lower rpms running at a higher speed -
"Use the XB12 chain and sprocket for the primary"

Here's the thing about that...

I bought the sprocket and chain and test-fitted with my primary cover.

At a minimum, you'd have to remove the chain guide (or whatever it's called - the big plastic piece in the top of the primary cover) because it won't fit with the larger engine sprocket.

Then there's the matter of the adjuster. Even if it could be assembled w/ stock adjuster, the chain would be hitting the front of the "shoe" more than laying across the top of it - likely it would get chewed up quickly.

Put these two things together, and it means swapping to the XB primary cover & adjuster as well.

There you have it.

Start New Thread
  Thread Last Poster Posts Pages Last Post
No Neutral Light to StartFast107525 1 07-20-09  01:42 pm
First gear shifter positionEzblast20 1 09-14-08  06:40 pm
Transmission clunking into gearGearheaderiko11 1 10-11-06  10:47 pm
Transmission jerks (jumping a tooth?) in 1st under loadReepicheep29 1 09-11-07  10:41 am
How much, if any, travel in shift lever?Notreallyamoron4 1 08-17-07  04:40 pm
Replacing Trans Fluid -- What is best fluid?Buellistic9 1 12-24-10  03:27 pm
Archive through September 16, 2008Fast107530 1 09-16-08  08:47 pm
  Start New Thread        

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Robi
Posted on Wednesday, September 17, 2008 - 08:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Themagster has some nice pictures of inside the primary, but I'm not exactly sure what I'm looking at, so can't tell you if gear dogs are depicted. If they are, let me know so I can see too.

http://www.whereismaggiemae.com/apps/photos/album. jsp?albumID=1600262
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Ezblast
Posted on Wednesday, September 17, 2008 - 11:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
No - you would have to split the case for that, and unless that bike was severely beaten, the chance of it having that problem is almost nill.
EZ
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Fast1075
Posted on Thursday, September 18, 2008 - 09:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Dang, I guess nobody has actually taken the trans apart in a Blast...or more accurately, nobody has taken pics at least.

But...I have a plan...there is a performance racing trans shop in Clearwater Fl. that I have used in the past for my dragbike trans..(I don't have an indexing table for my old Bridgeport) to set up, back cut and index trans gears..they are bound to know something...if I find out anything useful, I will post it here...I still believe that a blast trans can be made to shift smooth as a import trans...without resorting to megabuck aftermarket tricks.
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Ezblast
Posted on Thursday, September 18, 2008 - 11:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Have you done the shift pawl adjustment and drum pin alignment?
EZ
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Barker
Posted on Saturday, February 28, 2009 - 07:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I need a clutch assembly for one of my XB's asap.

I might have access to a used blast clutch

any difference with blast/xb clutch??

plates, basket, shell spocket????

Thanks for any help.
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Ezblast
Posted on Saturday, February 28, 2009 - 09:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I think the XB one has more plates -
anyone else.
EZ
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Gearheaderiko
Posted on Saturday, February 28, 2009 - 09:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
A 2003 XB and Blast transmission are almost (99.9%) identical. They use the same clutch plates (XB-7, P3-5), but many of the other clutch part numbers are different. In theory they should interchange, but with only 5 clutch plates you might have problems with slippage (or explosion?). If you're racing, you might burn it out quickly.

This question has come up before, maybe elsewhere on Badweb, but I dont know if it was answered.
FWIW: I'd bet anything an XB primary drive would bolt right on a Blast, but you'd might have to change the cover.
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Luvdathump
Posted on Monday, August 17, 2009 - 10:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I looked around, I could have totally missed it but is there a parts list with the part numbers for everything to take the primary cover off. I think I need to do a shift pawl, clutch, and primary adjustment. I think a clutch adjust will do but I read some where on badweb that a shift pawl adjust lets the transmission click along. Also has anyone ever stripped the coating off of the primary and engine covers. I believe it's just fancy painted aluminium am I wrong.
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Ezblast
Posted on Tuesday, August 18, 2009 - 12:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
For the pt #s email, and I'll send them to you - for the case - yes - you could strip and polish.
EZ
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