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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through October 22, 2006 » Will 2001 Crank assembly fit 1997 cases. « Previous Next »

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Funjimmy
Posted on Sunday, October 23, 2005 - 07:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have been looking for heavier flywheels to install in my '97 S1, and came accross a set from the newer 2001 Sportster engine.

Will this rotating assembly fit into my 1997 cases. If so, do I require anything special to use them.

Thanks
FunJimmy
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Blake
Posted on Monday, October 24, 2005 - 01:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Are you sure the 2001 flywheel is heavier than your '97 flywheel? Seems like an awfully big assumption if you are not absolutely sure. The I recall that Buell flywheels where lightened for the '99 or '00 models, not sure how they compare for '97 models. The cases are the same. I cannot imagine why the Sporty parts wouldn't bolt right in no problem. But I'm not certain.
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Buellistic
Posted on Monday, October 24, 2005 - 01:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Blake:

From my CRS memory(that was 8 years ago)the 97
models had lightend flywheels so they would rev
up quicker ... Before 97 "i" do not know ???

In BUELLing
Lafayette
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Panic
Posted on Monday, October 24, 2005 - 02:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I can't answer your question directly, but why heavier?
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Funjimmy
Posted on Monday, October 24, 2005 - 05:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Buell lightened the S1 cranks in 1997 in efforts to quicken acceleration.

I want the heavier Buell/Stortster wheels as they smooth out the power pulses from a hot setup as well as carry more momentum and drive off the corners.

Am I out to lunch with this thinking?

FunJimmy
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Blake
Posted on Monday, October 24, 2005 - 06:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Possibly only on the 2nd point. You'll have less drive off the corners with a heavier flywheel. The 2000 flywheels are lighter yet, so I think the '97 version is an excellent compromise. Acceleration in lower gears will also suffer with a heavier flywheel.
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Panic
Posted on Tuesday, October 25, 2005 - 08:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Definitely on the second point. "Carrying momentum" exists only in the minds of magazine writers for whom physics is a foreign and frightening subject.
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Alex
Posted on Thursday, December 08, 2005 - 02:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I´m not sure if it´s true for Sportster flywheels but if You put a new style Buell Thunderstorm crankshaft (with pressed in crank pin)in an older engine case You either have to machine a recess into the right side flywheel where the pinion shaft sticks out or You need to remove the pinion race from the right side case, mill the inner case boss flat, install a new race (press in flat with the new milled inside case face making it sticking out more to the cam side) and hone or lap the race to size. Not really a thing to do at home.

Best regards

Alex
M-TeK Engineering
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Firemanjim
Posted on Thursday, December 08, 2005 - 10:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jimmy,the S-2's (and Sportsters of the same age) had the heavier flywheels.Why don't you just get an S&S assembly,IIRC you can spec the weight,or get the Sportster sset instead of the knife edged Buell one.Well worth the money.
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Bluzm2
Posted on Thursday, December 08, 2005 - 02:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jim,
The S&S is a heaver set unless you custom build one with the lighter wheels.
I'm debating putting the heavier S&S vs the stock crank in my hurt M2.
List on a stock 2000 crank is $683 or so, the S&S is about $885, the S&S is the prebuilt, heavier version.
Much like a stock S2/Sportster crank.

Decisions, decisions...

It sucks that you can't rebuild the pressed together cranks. Although the price is close due to the labor charges...

Brad
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Hobanbrothers
Posted on Thursday, December 15, 2005 - 05:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pressed together cranks can be rebuilt...
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Buellistic
Posted on Thursday, December 15, 2005 - 09:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

In the 1997 models BUELLs the flywheels were lightened ...

My question is, when the BUELL models went to the
PRESS together flywheels were the flywheels again
lightened ???

In BUELLing
LaFayette
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Hobanbrothers
Posted on Friday, December 16, 2005 - 11:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It seems every new year (or at least every couple)brings a lighter flywheel. I would say the initial pressed together flywheel was about 2lbs. heavier than the current model.

It seems to me I remember thinking that the initial set was about 1.5lbs lighter than the 3 piece.

I have a similiar CRS though...

I would have to look through my records to give exact numbers though.
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Firemanjim
Posted on Friday, December 16, 2005 - 12:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Brad,did you check out the newer Buell specific S&S set with the knife edged wheels?And didn't the early M-2's have the heavy wheels?
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1313
Posted on Friday, December 16, 2005 - 09:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

In the days of the tubers there were 3 different lightened flywheels (at least that I remember). First was the 1996 S1, then the '00 models and then because of the issues with the shock the '01 models were (if I remember correctly) a little bit heavier than the '00 models.

1313
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Bluzm2
Posted on Saturday, December 17, 2005 - 05:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No Jim, I did know about them.
I'll pull their latest catalog and check it out.
Or call them Monday....

Also Hoban Brothers, what would it cost to have a 2000 Cyclone crank rebuilt?
I had been told that they couldn't be rebuilt.


Thanks!
Brad
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Hobanbrothers
Posted on Monday, December 19, 2005 - 12:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Really depends on what needs to be done as far as pricing. Almost every case is different.

I must be careful not to mix business with pleasure here on the Badweb. We are not a sponsor and it is not fair to current sponsors for me to pimp our business without paying.

A majority of our business is Big Twin - Twin Cam and Evo Harley Davidson work, Buells are our passion. (Can not roadrace a Fatboy, clip-ons are hard to make look good coming out of the tins by the headlight).

Regardless, we do work and have very good relationships with sponsors here(Buell of Appleton has been a longtime sponsor, time known only as BD now-[Before DaveS]for many years).

Sorry about that, I do not think it is any secret that we do motor work, flywheel and case work on many models and makes to be exact. But I will not give prices or try to persuade work here, only give facts and figures as I know them.

Sorry about that Brad, I believe Revolution Performance has prices listed on their website, you may have to piece some prices together to get where you need to go, and it may very well be more than a new set, a lot of times depends on replacement parts needed and their costs and custom work done.

I hope that has all come out right, I walk a tight rope on these issues and try to keep everyones best intrest in mind.
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