SOHC.co.uk Forums > CB500/550

Whats the correct sidestand?

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Trigger:
I like that one. You can not bend steel, i will remember that next time i take a rod of steel out of the furnace and it starts to bend on its own weight  :o

Bryanj:
Ken, recommended torque setting for Doxford big end nuts is one average size man using a 28lb hammer on the provided flogging spanner OR beat the shit out of it with a big hammer!

deltarider:
I'm no expert. Here a few questions.
Why is it when a frame needs to be corrected after an accident, this is done cold?
Why is it that both in Germany as well in Holland when cars at the yearly APK (Holland) IÃœV (in Germany also for bikes) will be rejected when the inspector detects parts like trailer hooks have been heat treated?
A friend's bike's handlebars were slightly bent after a drop. The mechanic at his dealer refused to bend it back to its original form, arguing it wasn't safe.
I'm not suggesting I know the answers. I would like to learn more on the subject.
Can you suggest what caused the metal fatigue of my main stand?

Oddjob:
Main stand, usually mud causes that. The webbing around that area is hollow, due to it's location it gets all sorts of stuff thrown at it by the back wheel. The dirt sticks inside, when it gets wet is acts like a huge sponge and just starts to eat away at the metal from the inside, you can't see it as it's hidden and the first you'd normally know of it is the paint bubbling on the surface as the rusts underneath blows it off the metal. By this time it's usually too late, the place in question is also a pivot point for the weight of your body, so when the rust has eaten enough of the metal that it's significantly weakened it the pressure of lifting the bike with your weight as well will snap it off. You see a clean break as that's what's left of the metal but the outsides will just be rust.

Frame, they do them cold because the heat will remove the frame paint and the customer doesn't want that do he, no he'd sooner it was weaker than have to repaint the frame.

Dealer, easy, they wanted to sell you another set of bars. Although in this case I'd 50% agree with him, if the metal is creased it's compromised, if it's just a slight bend then straighten them, it's the fact they are chrome which means they don't want to heat them and destroy the finish which means they tend to bend them cold.

Tow bar, probably heat treated as standard so any other type of heat will compromise it's safety, lot of stress on a tow bar and they can't take a chance of the trailer coming loose because it shears off.

sye:
Tow balls are cast iron I believe. Very strong but brittle and shouldn't be straightened or otherwise heated.

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