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July 18th, 2017, 07:02 PM   #11
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I Ride: 08 Husaberg FE650, 92 Husaberg FC501, 1991 Honda CR500, 1982 Honda CR480
Here is a pic and the weights I have for the 08 Husaberg fe650- 832 gr, 91 CR500- 566gr, 91 MSV Racing CR500- 441gr, and 08 KTM 505 XC-F/SX-F- 426gr

My plan is to reduce the circumference and weight of the Husaberg and KTM flywheels at least as much as the MSV Racing's CR500 -125gr, -2mm off circumference and -2mm off the face.

I have a plan mapped out and hopefully next week I should have one of the 2 done. I suspect I can get more weight off both since they are billet.

Thanks from paolo6

Last edited by Big Berg; July 21st, 2017 at 02:42 PM.
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July 19th, 2017, 12:22 AM   #12
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the rule of flywheels is that they should be broad in daimeter and carry their weight near the rim. this gives them the most momentum.

also, a 650 loses a lot of momentum coming up on the 4th stroke which is the toughest stroke: the compression stroke.

but it has to be said that the FS/FC flywheel does pep them up!

regards

taffy
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July 19th, 2017, 11:27 AM   #13
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Is there any possibility to make the flywheel heavier
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July 19th, 2017, 11:49 AM   #14
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there is a company named stealy in the USA that make flywheel weights. get the dimensions of yours right and you should be OK? the 2004-8 had a similar flywheel to KTMs....just goes round the other way!

regards

Taffy
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July 20th, 2017, 02:42 PM   #15
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I Ride: 2012 KTM 350 XC-f, 2007 Husaberg FE450, 2000 RM125, 1996 RM250
Always amazed at the work MSV Racing does!
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July 20th, 2017, 03:18 PM   #16
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I Ride: 08 Husaberg FE650, 92 Husaberg FC501, 1991 Honda CR500, 1982 Honda CR480
Originally Posted by The_Force View Post
Is there any possibility to make the flywheel heavier
You want a heavier flywheel for your 650 than OEM?
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July 20th, 2017, 04:05 PM   #17
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I Ride: 2006 FS650e, 2007 FE550e, 2016 Ktm500Exc
I would be interested in a review of the oem flywheel lightened.
I might be willing to do it to mine at some point. Im thinking slightly lightened just to enhance the bike and nothing drastic.
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July 21st, 2017, 04:00 AM   #18
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I Ride: 08 Husaberg FE650, 92 Husaberg FC501, 1991 Honda CR500, 1982 Honda CR480
Originally Posted by pollo View Post
I would be interested in a review of the oem flywheel lightened.
I might be willing to do it to mine at some point. Im thinking slightly lightened just to enhance the bike and nothing drastic.
I am going drastic.

What do you consider slight, as in how many grams less weight than OEM?
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July 21st, 2017, 04:11 AM   #19
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Originally Posted by Big Berg View Post
I am going drastic.

What do you consider slight, as in how many grams less weight than OEM?
I wouldn't be too sure but maybe from the oem 832gram down to around 700? Its all new to me anyway.Testing would be best as you say.
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July 21st, 2017, 02:50 PM   #20
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I Ride: 08 Husaberg FE650, 92 Husaberg FC501, 1991 Honda CR500, 1982 Honda CR480
Originally Posted by pollo View Post
I wouldn't be too sure but maybe from the oem 832gram down to around 700? Its all new to me anyway.Testing would be best as you say.
It just so happens I have 2 650 flywheels. I will drastically lighten the first one and give a review. If it is awesome I will machine the second the same and put it up for sale. If not I will cut the reduction in half and go from there. Stay tuned for a ride review with GoPro in August.
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