BMW K bikes (Bricks)

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Saxon7

Saxon7
Life time member
Life time member
Hello there,
A simple question:
What is the best piece of billet to use to make a rear wheel adaptor for sidecar use?
Sean

    

chris846

chris846
Life time member
Life time member
Will it have threaded holes in it for the wheel studs?


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The Longest Lunch
    

OdysseyRider

OdysseyRider
active member
active member
@chris846 wrote:Will it have threaded holes in it for the wheel studs?
Yes it will need to be turned down and be threaded


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Steve: 0404485585
    

chris846

chris846
Life time member
Life time member
With you mentioning billet, I thought you could be considering aluminium (I could be wrong). Aluminium will be no good for wheel stud threads - steel is needed. However, any old mild steel should do.


__________________________________________________
The Longest Lunch
    

Saxon7

Saxon7
Life time member
Life time member
Thanks for those replies.
The question was in regards to the grade of material other people here with sidecars might have used, not about threads etc.
Cheers
 Sean

    

RicK G

RicK G
VIP
VIP
You can get aluminium that would do the job but the cost would make your eyes water. A higher grade than mild would be desirable.
I will see what I can scout up. there are a few places that would sell you a billet.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

RicK G

RicK G
VIP
VIP
Atlas steels Ph 1800 818 599 the grade of steel is 1045 which is around 550 tensile which is higher than mild (350 or less) and easily machined. Billet size is 200mm (8in) diameter 100mm long. it would weigh about 25 kg but machined to the plans I did should come in around 8.5kg.
Atlas may or may not cut to size but if they don't then ask who has bought some of that bar recently and get onto them.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

Saxon7

Saxon7
Life time member
Life time member
Thanks Rick,
Steve M and myself are looking at getting one each made.
Will talk to him about it and see where we go from here.
Cheers
 Sea.

    

halflive

halflive
Silver member
Silver member
Don't be daft, nobody makes wheel adapters out of steel. They all are made of aluminium alloy. Usually 2024 or 6061. You are not going to add 5 kilo's of steel in your rear wheel.
If you are afraid you will strip the threads you always can install Heli coils as a precaution. Or you can install studs. But you are a special breed if you are blunt enough to strip 12mm thread in 2024.
The bolts where your engine is connected to the frame is 10mm and fitted in the aluminium casting.

http://halflive.hostei.com
    

Saxon7

Saxon7
Life time member
Life time member
Yes, I've chatted with Charlie about it as well. This outfit is not going to be treated too harshly or thrashed. I have a Rocket III for that.
Cheers
 Sean

    

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