G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile

Buell Forum » Old School Buell » Archive through October 28, 2010 » Flywheels « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Fuzzz
Posted on Thursday, October 14, 2010 - 09:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Does anyone know when Tubers started using the "momentum reduction" pressed together flywheels? I know the 00 Cyclone has them, and the 98 S1, but not sure of earlier examples.
Top of pagePrevious messageNext messageBottom of page Link to this message

Phelan
Posted on Thursday, October 14, 2010 - 11:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A '98 S1 does not have them. A '98 S1W does, as well as a '98-up S3T. A '98 S3 does not have them, nor a '98 M2. BTW 98-99 reduced weight flywheels were 3-piece cranks, while '00-'02 had pressed cranks.
Top of pagePrevious messageNext messageBottom of page Link to this message

Phelan
Posted on Thursday, October 14, 2010 - 11:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Oh and all the '00-'02 tubers had the pressed reduced weight flywheels. So to directly answer your question, '00-'02 had pressed together cranks, while '98 S1Ws and S3Ts had a 3 piece version of the reduced weight flywheels/cranks
Top of pagePrevious messageNext messageBottom of page Link to this message

Fuzzz
Posted on Saturday, October 16, 2010 - 08:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks!
My oldest son just bought a 97 S1, and after the test ride I was sure it didn't have them. I like the way the newer tubers feel, perhaps I can find a set of wheels for future use for him.
Top of pagePrevious messageNext messageBottom of page Link to this message

Foximus
Posted on Saturday, October 16, 2010 - 06:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

how much lighter are the newer ones, than the 97 s1?
Top of pagePrevious messageNext messageBottom of page Link to this message

Phelan
Posted on Saturday, October 16, 2010 - 11:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

~2 lbs.
Top of pagePrevious messageNext messageBottom of page Link to this message

Foximus
Posted on Sunday, October 17, 2010 - 01:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

WhaaT?! really? Thats a massive difference! a 98 tuber and up has a flywheel thats around 2lbs lighter than a 97??? Where do i find one? Jez...
Top of pagePrevious messageNext messageBottom of page Link to this message

Phelan
Posted on Sunday, October 17, 2010 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Somebody in another forum calles me out on The flywheel information, so I'm trying to find some definitive data. They said that '96-'99 Buells except '96 S2 all used the same light flywheels and included a P/N. I have yet to verify right or wrong on that, but it is possible I have been repeating misinformation for the past two years on this subject, so I'll try to get to the bottom of it.
Top of pagePrevious messageNext messageBottom of page Link to this message

Buellistic
Posted on Sunday, October 17, 2010 - 02:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The two pounds lighter flywheels made the engine rev up quicker and the 27 tooth counter shaft sprocket added a little to the up-date package ...

The light flywheels is a cheaper up-date(they have to be balanced any way) to do as is the 27 tooth counter shaft sprocket(plenty of them available) ...
Top of pagePrevious messageNext messageBottom of page Link to this message

Court
Posted on Sunday, October 17, 2010 - 03:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

All S1 and S1W's appear, looking at the parts manuals to have the same (23899-96Y) flywheels.

The 1995 and 1996 S2 were the only Buells with the heavier (23990-90Y) flywheels.
Top of pagePrevious messageNext messageBottom of page Link to this message

Court
Posted on Sunday, October 17, 2010 - 03:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

>>>The two pounds lighter flywheels

They were THREE (not two) pounds lighter and appeared for the first time on the 1996 S1 Lightning.

Essentially . . the ONLY Buell to ever have "heavy" flywheels were the 1995 and 1996 S2 and S2T models.

(Message edited by court on October 17, 2010)
Top of pagePrevious messageNext messageBottom of page Link to this message

Buellistic
Posted on Sunday, October 17, 2010 - 07:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The 2000 Models went to a STRAIGHT PIN flywheels ...

The ROTATIONAL INERTIA of the flywheels were reduced 14%(LIGHTER FLYWHEELS)to ENHANCE ACCELERATION(racing hint) ...

This required a NEW RIGHT CRANK CASE HALF with NEW OIL PASSAGES and NEW CAM GEAR COVER with new oil passage ways(you can IMPROVISE and put them in earlier case's) ...

The intent was to maintain a more constant
between the oil filter and the NEW LIFTERS "RE-TRO FITTED out of the Twin Can 88 Motor ...

An interesting aspect of the NEW LIFTERS is to restrict oil flow to the top end too much oil in the top end caused heat buildup(race hint)...
Top of pagePrevious messageNext messageBottom of page Link to this message

Fuzzz
Posted on Sunday, October 17, 2010 - 07:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Oh man, just when I thought things were clearing up, I found this note in my '99-'00 M2 service manual..." All 2000 Model year Buell Thunderstorm engines have a NEW straight, pressed-in crankpin and low inertia flywheel. The new flywheel is serviced as an assembly (is not disassembled)"
The photos of the '99 model crankpin and flywheel are definitely bolt-together "heavy wheels...and the 98 S1 manual I have also shows the heavy wheels, whereas the '01 S3/S3T manual on my shelf describes only the "light" wheels, with the added note..."If the flywheel or connecting rods need to be replaced, then they must be replaced together as one assembly. Return the flywheel/connecting rod assembly to the factory for replacement."....So I guess all we know is some have and some don't!
Top of pagePrevious messageNext messageBottom of page Link to this message

Foximus
Posted on Sunday, October 17, 2010 - 09:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

so basically nobody agrees? LoL.
Top of pagePrevious messageNext messageBottom of page Link to this message

Foximus
Posted on Sunday, October 17, 2010 - 09:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ah... well in that case feel free to send me some heads and new pistons. ;]
Top of pagePrevious messageNext messageBottom of page Link to this message

Snowbees
Posted on Monday, October 18, 2010 - 05:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My 99 X1 has a straight crank pin (pressed together), i had a new one made along with new big end bearings.
Top of pagePrevious messageNext messageBottom of page Link to this message

Jespo_m2
Posted on Wednesday, October 20, 2010 - 08:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's it.... everyone... start tearing down your motors and reporting which crank you have. We need to make sure. : )
Top of pagePrevious messageNext messageBottom of page Link to this message

Kyrocket
Posted on Wednesday, October 20, 2010 - 10:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Already have. Mine ('99 X1) was pressed. Crank pin got chewed up. Tearing it down again for similar symptoms.
Top of pagePrevious messageNext messageBottom of page Link to this message

Oldog
Posted on Thursday, October 21, 2010 - 11:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



err you just did that?

new crank?
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Friday, October 22, 2010 - 04:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

For your viewing pleasure:

Old VS New(er)







The new flywheel is only about 1lb lighter than the old lighter flywheel, but as can be seen the way the weight is distributed is very different. Some crankcase machining needs to be done when converting from the older to newer style.
Top of pagePrevious messageNext messageBottom of page Link to this message

Fuzzz
Posted on Friday, October 22, 2010 - 11:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Rick, ya beat me to it, tho I don't have any pics of the "old" wheels...
Picked this set up from Frederick's as a spare...
Part # 23899-00YA, weight 20 lbs










Top of pagePrevious messageNext messageBottom of page Link to this message

Buellistic
Posted on Friday, October 22, 2010 - 08:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"WOW", LESS OIL DRAG AND "LIGHTER" !!!
Top of pagePrevious messageNext messageBottom of page Link to this message

Fuzzz
Posted on Sunday, October 24, 2010 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I noticed the wheels were dry when I saw the pics I posted, and found a cool way to prelube the lower end bearings. I have a mini funnel that fits on the end of an oil jug, and it threaded on the pinion shaft, turn it sideways and the oil just flowed in till it oozed out between the wheels, spread the excess all over the set and put them back in the box for future reference...
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a private posting area. Only registered users and custodians may post messages here.
Password:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration