Brake rotors

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11 Nov 2013 18:49 #612828 by uglee
Brake rotors was created by uglee
Trying to do a wheel swap on my kz400 project but ran into a big problem. Front wheel bolts up but rotor is too big. Can and do you guys think a machinist is able to take an 1/8th of an inch off the rotor? The wheel is off a 2009 Ninja 250. Other than that I would have to get the front caliber off a Ninja and make a bracket to fit the factory kz400 forks. Not for a complete swap of the front-end since the wheels were free.

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12 Nov 2013 13:30 #612900 by bountyhunter
Replied by bountyhunter on topic Brake rotors
I would think that would be pretty easy to do for a machinist.
1979 KZ-750 Twin

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12 Nov 2013 13:55 #612902 by Beaner242
Replied by Beaner242 on topic Brake rotors
Shouldn''t be a problem for any competent machine shop.
1982 KZ1000K LTD Chopper

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12 Nov 2013 14:27 #612906 by Cynjut
Replied by Cynjut on topic Brake rotors
I'd bet even an incompetent one could probably get the job done....
1977 KZ-1000 A1
1982 KZ-1000 M2 Frankenbike

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12 Nov 2013 18:00 #612923 by uglee
Replied by uglee on topic Brake rotors
so no safety issue with trimming brake rotors??that was my main concern since this is a wave type rotor.

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13 Nov 2013 03:41 #612941 by T_Dub
Replied by T_Dub on topic Brake rotors
I dont see any, as long as its cut nice and slow and he makes doubly sure the thing is centered in the lathe before starting. Cutting very slowly will be the key to not bending it or damaging it. But a competent machinist will see this.
1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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13 Nov 2013 06:00 #612947 by 80B4
Replied by 80B4 on topic Brake rotors
If you are going to make a bracket to mount the Ninja caliper then you don't need to machine the rotor. Just design the bracket to put the caliper in the correct position over the rotor.
1980B4 1000
1978 Z1R
1978 B3 750
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13 Nov 2013 11:07 #612976 by uglee
Replied by uglee on topic Brake rotors
not having the caliper adds to cost and making the bracket means a fabricator to design it. Simple solution on my end is to cut the rotor 1/8th of an inch then add spacers to shim the wheel to center. Looking for a decent machinist in Houston,Tx as I type.

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13 Nov 2013 13:16 #612994 by 80B4
Replied by 80B4 on topic Brake rotors
So, what caliper are you going to use?
1980B4 1000
1978 Z1R
1978 B3 750

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13 Nov 2013 13:22 #612995 by sbc1320
Replied by sbc1320 on topic Brake rotors

80B4 wrote: So, what caliper are you going to use?


I think the one for his bike, he is just changing wheels.
1980 KZ1000 LTD-B4(MK II engine) - Progressive suspension, MTC pistons, Dynojet Stage III, all wear items replaced, WFO paint scheme(1978), etc..

Past bikes- 2 1976 Kz900's, 5 1975-76 Honda CB750's, Honda 500 -4, Honda 250, Honda 125, Honda 100, Suzuki RM 250, Honda XL350, Kawasaki KLR 650, etc..

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14 Nov 2013 07:04 - 14 Nov 2013 07:04 #613051 by Kidkawie
Replied by Kidkawie on topic Brake rotors
cut the caliper. (Flame Retardent- ON)
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
Last edit: 14 Nov 2013 07:04 by Kidkawie.

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14 Nov 2013 21:06 #613095 by steell
Replied by steell on topic Brake rotors

Kidkawie wrote: cut the caliper. (Flame Retardent- ON)


I can't see how that would work.
Care to elaborate ?
KD9JUR

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