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Rotor/ flywheel

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jez1100r
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Rotor/ flywheel

#1 PostAuthor: jez1100r » Fri Mar 17, 2017 12:50 pm

Hi has anyone got any suggestions on how to hold a rotor without a holder tool or is there anything to buy at a seceble price

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Al
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Location: Farnbronx, Sin City, N.E. Hants

Re: Rotor/ flywheel

#2 PostAuthor: Al » Fri Mar 17, 2017 3:03 pm

I made my own rotor holder which is not that complicated. Ray Debben told me last winter that he could get rotor holder tools dont know about now. Electrex world also did sell new rotors which fit.
Currently 22 in stock!

http://www.electrexworld.co.uk/acatalog/RO3.html

AL
1981 J1

jez1100r
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Re: Rotor/ flywheel

#3 PostAuthor: jez1100r » Fri Mar 17, 2017 3:58 pm

Spoke to electtrex today the one they list should have the number gp 9331 on mine has gp9325 On it .
have to wait for the technical man on Monday

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Al
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Re: Rotor/ flywheel

#4 PostAuthor: Al » Fri Mar 17, 2017 7:29 pm

Jez i think EW's information is correct but also incomplete.
I took off a 5 magnet J rotor from the J and replaced it with an 1100R / Unitrak one numbered GP9307 2K.
I have also used a GP9225 31 and have a broken GP9325 2A
Yes it needed to be lapped on but not like it was a different taper angle or length.

Apart from the number of magnets on the early ones and the degree of balance (none to speak of on the early one, very apparent on the later ones) i cant see any physical or mechanical differences between them.

I'd be interested to hear what they have to say if they can detect a difference between them.
With reference to the number of magnets; they quote the same code ( EW part number GO3 ) for all generator stators through the entire J format range, regardless of magnet numbers.

There is however, a fundamental difference though, in that; the RO3 from EW has a woodruff key slot which none of the 1000's or 1100's need or use.

AL
1981 J1

jez1100r
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Posts: 100
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Re: Rotor/ flywheel

#5 PostAuthor: jez1100r » Mon Mar 20, 2017 12:37 pm

The man at electtrex says there's will fine so I pick one up tomorrow


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