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Morris Mag Wheels
Morris Mag Wheels
Back in the day, one option for wheels for the R90s was a set of Morris Mags. Does anyone know where to source the rear disc assembly for the rear disc? Butler and Smith used a Hurst Airheart unit that mounted below in front of the axle. Would a 77/80 RT rear caliper work or be made to work? Thank you.
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Tinkertimejeff
- Posts: 155
- Joined: Thu Jan 20, 2022 5:49 pm
- Been thanked: 9 times
Re: Morris Mag Wheels
I sent you a message and yes you might be able to modify a later airhead caliper mount and caliper to work. I started to do it but had no extra caliper for the final mounting so it stalled right there.
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boldheineken
- Posts: 2
- Joined: Wed May 08, 2024 12:24 am
Re: Morris Mag Wheels
If original parts are unavailable, consider consulting with a motorcycle restoration expert or custom fabrication shop. They may be able to fabricate or adapt existing components to fit your bike.
scratch geometry dash
scratch geometry dash
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srankin
- Posts: 1099
- Joined: Fri Jul 14, 2017 8:45 pm
- Location: Spencerport, NY USA
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Re: Morris Mag Wheels
Sorry, I am going to butt in here and give you my two cents, LOL. Why do you want to convert to a rear disc brake?
I have ridden my current 84 R80RT for forty years with a drum brake as I did my shot lived R90S. The drum works fine or at least it did for me.
On the other hand, I had a 78 R100RS with the factory disc brake set up and frankly it was a pain in the ass. Pads wore out fast, (I went almost 190,000 miles on drum shoes), It was prone to being very fussy about the condition of fluid and boy changing fluid can be a pain. The caliper cannot be bled mounted but has to be removed and inverted due to the design catching air bubbles.
The rear disc set up tends to get a lot of crap thrown on it when ridden in rain and dirt so conversely pads wear out twice as fast at the front pads.
LOL, finally, the performance was just not that much better than what I get with the rear drum at least not enough to ever make me want to convert to a disc from drum. As a side, the latter airheads did go back to drums.
As a final note, I do believe the parts from a /7 disc set up will work on a R90S, I have never tried it but the swing arms/final drive for the 78, 79 bikes are not that much different then the R90S bikes. Good luck, St.
I have ridden my current 84 R80RT for forty years with a drum brake as I did my shot lived R90S. The drum works fine or at least it did for me.
On the other hand, I had a 78 R100RS with the factory disc brake set up and frankly it was a pain in the ass. Pads wore out fast, (I went almost 190,000 miles on drum shoes), It was prone to being very fussy about the condition of fluid and boy changing fluid can be a pain. The caliper cannot be bled mounted but has to be removed and inverted due to the design catching air bubbles.
The rear disc set up tends to get a lot of crap thrown on it when ridden in rain and dirt so conversely pads wear out twice as fast at the front pads.
LOL, finally, the performance was just not that much better than what I get with the rear drum at least not enough to ever make me want to convert to a disc from drum. As a side, the latter airheads did go back to drums.
As a final note, I do believe the parts from a /7 disc set up will work on a R90S, I have never tried it but the swing arms/final drive for the 78, 79 bikes are not that much different then the R90S bikes. Good luck, St.
Owner of a 84, R80RT and 78, R100RS