Big thanks to Risticuss (Simon)

[joebloggs]

Seems finding engineers to do small jobs is almost impossible these days, Simon replied to one of my posts and offered to tap some alloy round bar I sent him to make a rose jointed brake torque arm. I know some of you will say its not strong enough for a brake arm but its only on there for MOT purposes so it should stand up to that.

Thanks again Simon

[chaz]

and then what? no brake?

[joebloggs]

and then what? no brake?

No the brake will be there, just never use it :eek

[Exupnut]

Shiny.....nice :-)

[chaz]

I "never" use my rear......unless I'm on loose surface or running out of road, had the rear brake lock solid ( on a drum brake the washer that held the shoes in place came off) the brake plate was on the peg and slot way of holding it, it broke the peg off and spun round snapped the shocker (old fashion twin shocks) and made a right mess of things.
looking at yours I would think it's up to the job.

[nick crisp]

looking at yours I would think it's up to the job.

PaulFZS might have something to say about that...


Never mind that the ally rod itself is in no way up to the job, the real weak point is where the rose joints fix to it. I had a similar rod on an RG500 gearshift linkage snap at the rose joint thread, and that was just due to a notchy gearbox. If it couldn't take even that much pressure...imagine the forces being applied to a torque arm, and the fatigue that will quickly build up. I would not rely on that as a permanent solution.

[fazersharp]

Best looking one I have seen is this one by rexus but I believe is a one off from a engineering mate of his

[joebloggs]

[quote author=chaz link=topic=19199.msg222328#msg222328 date=1453548318]

looking at yours I would think it's up to the job.

PaulFZS might have something to say about that...


Never mind that the ally rod itself is in no way up to the job, the real weak point is where the rose joints fix to it. I had a similar rod on an RG500 gearshift linkage snap at the rose joint thread, and that was just due to a notchy gearbox. If it couldn't take even that much pressure...imagine the forces being applied to a torque arm, and the fatigue that will quickly build up. I would not rely on that as a permanent solution.
[/quote]

I wouldn't rely on it but as I said its not for stopping only to keep Mr MOT man satisfied. If I wanted to use it I'd have used titanium not aluminium. As for the rose joint, I guess its the bolt in single shear thats the weakest link. A clevis (as in picture) would be the best solution but I prefer the look of a rose joint

[Dave48]

As engineering jobs go-it would probably make a very nice gearchange linkage!
Torque arms need to be rigid as per the Nexus illustration-wouldnt it have been easier to design/make one that would be up to the job and lookk good at the same time?

[joebloggs]

As engineering jobs go-it would probably make a very nice gearchange linkage!
Torque arms need to be rigid as per the Nexus illustration-wouldnt it have been easier to design/make one that would be up to the job and lookk good at the same time?

I hear what your saying but I just pref the look of rose joints, it may not be up to the job, but as I said before, it doesn't have to be practical, just look good.