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Lightened flywheels group buy

Started by Monsterlover, November 07, 2013, 08:07:12 AM

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Monsterlover

November 07, 2013, 08:07:12 AM Last Edit: November 19, 2013, 10:17:42 AM by Monsterlover
I've been contacted by a DMFer who wants me to lighten up his flywheel.

I need 4 more of you who want the same before I can do it.

$70 which includes return shipping anywhere in the states.  Removes about 2 pounds*.

PM Herm if you want a reference.  I did his a while back and I think he even has pics posted somewhere.


*from an i.e. flywheel (fuel injected)
Looks like I can also do the carb flywheels but I can't guarantee 2 pounds since we cant cut the area with the ignition trigger.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#1
November 07, 2013, 08:11:54 AM
Any flavor Duc flywheel?
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Buckethead

#2
November 07, 2013, 10:13:45 AM
Very interested. Do you have a cutoff date in mind?
Quote from: Jester on April 11, 2013, 07:29:35 AM
I can't wait until Marquez gets on his level and makes Jorge trip on his tampon string. 

thorn14

#3
November 07, 2013, 12:31:37 PM
I'm in.


Found the picture.
M620 turned M800 but then back to M620 after the M800 died at 110k, and now to Multi 1000.

Monsterlover

#4
November 07, 2013, 12:39:36 PM
Quote from: Speeddog on November 07, 2013, 08:11:54 AM
Any flavor Duc flywheel?

How many different ones are there?

I think all the ie bikes have the same fw. Does the Carb fw differ? 

We chuck on that bearing bore so as long as that's the same its a non issue here.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#5
November 07, 2013, 01:29:34 PM
Quote from: Monsterlover on November 07, 2013, 12:39:36 PM
How many different ones are there?

I think all the ie bikes have the same fw. Does the Carb fw differ? 

We chuck on that bearing bore so as long as that's the same its a non issue here.

Myself, I've got 3-ph carbie and 3-ph ie on my bench now, they are different.

Nichols says there's 6 flywheels.

98 and earlier carbie
99 and later carbie
99 and later ie
90-95 ie
96-98 ie
S4Rs & 99-01 SPS, 749 R

I didn't plow through each model entry on their site, so YMMV.

AFAIK, they all use the same sprag bearing, so if that's the surface you chuck up on, then it should be good.

Just don't cut the carbie ignition trigger lumps off.  ;D
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Monsterlover

#6
November 07, 2013, 04:16:31 PM
Got a pic of those trigger lumps?
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#7
November 07, 2013, 05:08:17 PM
Quote from: Monsterlover on November 07, 2013, 04:16:31 PM
Got a pic of those trigger lumps?

Stock lump, 3 phase carbie:




Modified lump, 3 phase carbie, other side view:


- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Monsterlover

#8
November 07, 2013, 06:42:20 PM
I do not have a good feeling about these carb flywheels.

That trigger lump is definitely in the area we machine.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#9
November 07, 2013, 07:46:50 PM
<control+C>
<control+V>
Edit...type type type...
<save as>

yes?  ;D

Before:


After:


Thought I had a better pic of the 'after'...
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Monsterlover

#10
November 07, 2013, 07:55:02 PM
Hmm. I could do it but I can't say how much weight comes off without doing one and weighing it.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

ChrisK

#11
November 19, 2013, 11:16:32 AM
Monsterlover, I'm the guy you just e-mailed back about this. Sorry, I didn't know this thread was going on. We can keep further conversation here for everyone's benefit.

I also have a carbed model, still interested though.

Speeddog, did you basically just drill that row of holes in a mill? Then take material off with a lathe just above the row of holes?
1998 M900
2007 CBR600RR Track Bike
1982 Virago 920 Cafe/Fighter Project
1980 Lambretta Moped
Supra Boats enthusiast

"There is no minimum."  - some guy.

Speeddog

#12
November 19, 2013, 12:07:58 PM
Quote from: ChrisK on November 19, 2013, 11:16:32 AM
~~~SNIP~~~.

Speeddog, did you basically just drill that row of holes in a mill? Then take material off with a lathe just above the row of holes?

I had a bunch of weld added to that timing lump so I could run any advance I wanted (using an IgniTech TCIP-4 ignition box).
Machined that lump down, and then removed material from there back.

Additional drilled spots were to restore balance after adding material and removing ~ half of the original balance drilling.
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

ChrisK

#13
November 19, 2013, 01:44:57 PM
Does the stock 'lump' limit the amount of advance you can use, therefore limiting available performance with a heavily modded bike?

How did you "measure balance"?

I'm sorry, I feel like I'm taking this thread off topic.
1998 M900
2007 CBR600RR Track Bike
1982 Virago 920 Cafe/Fighter Project
1980 Lambretta Moped
Supra Boats enthusiast

"There is no minimum."  - some guy.

koko64

#14
November 19, 2013, 02:30:34 PM
My carbed flywheel has over 2 pounds machined off. A mate trimmed the back, inside, etc with a bevel effect and kind of dished it out alot like the Nichols version.
Sorry, no pics. It went from 1900 grams to 900 grams. Another mate reckons its smoother than the Yoyodyne/DP type on his carbed 900 SS.
2015 Scrambler 800
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