LW Flywheel

Rudemouthsky

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No gods and no masters

Re: LW Flywheel

« Reply #15 on: January 29, 2015, 10:21:51 AM »

Am I the only one with a Nichols flywheel that feels their cognitive dissonance kicking in right about now? Lol

I wanna say I was aware of and researched this issue before making the choice to go with a Nichols FW and was sufficiently satisfied that everything would be fine before taking the plunge. Doesn't Nichols MFG have an official response?

Ah ok now I remember...this only effects bikes with the newer 3 phase alternators.


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"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

thorn14

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Re: LW Flywheel

« Reply #16 on: January 29, 2015, 10:43:05 AM »

Nichols is the only aluminum flywheel I would trust if I went with one again.


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

hackers2r

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Re: LW Flywheel

« Reply #17 on: January 29, 2015, 10:51:11 AM »

There are a few of the DP lightened aluminum ones available on eBay. But if the risk is the use of aluminum, I'm steering clear. Also, are the Fast Frank lightened OEM ones balanced after they are lightened?


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brad black

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Re: LW Flywheel

« Reply #18 on: January 29, 2015, 01:02:45 PM »

Quote from: hackers2r on January 29, 2015, 10:51:11 AM

Also, are the Fast Frank lightened OEM ones balanced after they are lightened?

there's no need. as long as the lathe runs true they're fine.

maybe the dp ones are just the wrong material. i've not seen ones tightened to 270 fail, but we only sold a few before we started machining the std ones after one did what is shown above.


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Brad The Bike Boy

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MonsterHPD

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Re: LW Flywheel

« Reply #19 on: January 29, 2015, 02:42:08 PM »

I´ve had a Kämna Alu flywheel on my M900 for 45K+ km now, with no issues.
On the rain bike (900SS for rainy track days) I´ve lightened the stock steel flywheel, also with no issues. Pretty hard steel, btw.

In a few cases I´ve heard about where the nut loosened with std. steel flywheels the crank was ruined; there were quite a few of those some years ago. I think, with the loosened alu flywheel the crank was OK, but maybe the engine got all contaminated with alu bits?

The splines are of no use except for locating the flywheel on the crank, it´s held in place by the axial force from the nut. The splines take the beating only when the axial force from the nut is too low.

Theoretically, the axial force could increase with an alu flywheel as the alu heats up and expands. Might cause some deformtion due to repeated thermal cycling, and eventul loosening of the nut, maybe..?

Anyway, so far both flywheels are still in place, fingers crossed.


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Monster 900-2002 (sold, alive and well in the UK), 749R / 1100 HYM combo for track days, wifes / my Monster Dark 800-2003 (not entirely "Dark" anymore and a personal favourite) , 50% of 900SSie -2000 track bike for rainy days-now with tuned ST2 motor and Microtec ECU. Also parked due to having been T-boned on track.

muskrat

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Re: LW Flywheel

« Reply #20 on: February 01, 2015, 08:49:27 PM »

10,000 miles and no issues. Worth every penny if you like wheelies a lot. Grin

Seriously, for me it was the second best mod I've done to my S4R


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Can we thin the gene pool?

2015 MTS 1200
09 Electra Glide

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