Triggers bucket

[LesterPiglet]

I've mentioned this before and I still don't understand the physics.
Surely your tyre is going to break loose long before enough stress is put on those bolts.

[Trigger]

Les, the stress is in the hub area. And what does a tyre have running in it? High tensile steel. A tyre is a woven compound.

[Ewan 500 K1]

I've mentioned this before and I still don't understand the physics.
Surely your tyre is going to break loose long before enough stress is put on those bolts.

repeated stress = fatigue = decreasing strength = potential for sudden and catastrophic failure . .... better safe than sorry in any case for the sake of a fiver ?

[Bryanj]

I agree with oddjob, to the best of my knowledge all the 500/550 (including the twin) discs and calipers are the same, I think a 750 one was fitted possibly under the assumption that a bigger diameter would give better braking

[Trigger]

The next question is what 750?. Most of the 750K had a caliper that bolted from the back, until the K8 which had a front bolted caliper. The K8 shared the same caliper as the 750 F1. The 750 F2 had a totally different set up, shared with the 750KZ and KB. I have never seen this arm with the 50mm space on any 750's. There must be someone who has this 50mm/wide body caliper fitted. Come on now, don't be shy.

[Ewan 500 K1]

The next question is what 750?. Most of the 750K had a caliper that bolted from the back, until the K8 which had a front bolted caliper. The K8 shared the same caliper as the 750 F1. The 750 F2 had a totally different set up, shared with the 750KZ and KB. I have never seen this arm with the 50mm space on any 750's. There must be someone who has this 50mm/wide body caliper fitted. Come on now, don't be shy.

I've asked the  over on the 750 page trig.. using pptom's photo

[Trigger]

Ewan, if it comes back with there from a special sand cast, i will give you a fiver for our 50mm arm

[Ewan 500 K1]

pptom .. if your still about have  gander at the answer at http://www.sohc.co.uk/index.php?topic=6573.0.  Yer man might be quite happy with his potentail resale price

[pptom]

Just read that Ewan, thanks very much - coming to an auction site near you soon...

[hairygit]

The bolt spacing on my 750F1 is 50mm, the 750K7&8 also use the same caliper. Until D.S.S. had some replicas made recently they were really hard to find in useable condition. So Trig, either get a 750F1/K7 or 8 disc, or sell the caliper and arm and fit 500/550 items, the 750 caliper also uses a marginally bigger piston and seal, and the seal is 3 times the price of the 500/550 item!

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