Removing the Alternator Rotor

[tedmagnum]

hey guys,

Anyone got any tips on how to hold the Alt rotor still whilst losen the super tight lefthand thread centre nut.

the engine is out of the bike and I cant seem to source a rotor strap from anywhere.

[mal]

Hi Ted
If the clutch is still on the engine it might be possible to hold the centre nut and allow you to undo the stator ,sorry can't think of anything else.

[paultheold]

That nut should have been removed, when the engine was in the frame, that was my mistake when I removed my engine. You could try a strap wrench on the roter, but it needs to be a good one. Or you could drill two holes in the nut then split the nut with a chisel, but you do need to be carful not to catch the thread with the drill. Both the generator and cluthh nuts are a sod to remove.

[tedmagnum]

yup...I should have known that but i stupidly asumed that I could find a rotor strap from somewhere.

Thats my next question.. does anyone know where i can get a good quality rotor strap from ????

[Dilbert]

Can you drop it into 1st and get an impact hammer to shock the thread, it may turn the engine over slightly but the shock load should be enough to loosen the nut...gently does it and keep it square, squirt some Plus Gas in to loosen the threads and prevent thread galling.

Lots of problems can be sorted with a Kinzo (my best friend)

[Dilbert]

p.s. I said gently does it!, make sure you take up any backlash in the gears or they will spin round into mesh and get bent!!!!!!

[tedmagnum]

I considered this but you see, the barrels are also off (im changing the rings and cam chains).

This means any crankshaft movement will inevitably get the pistons jammed into the lower resess as they drop a little into the crankshaft cavety. This also means that the crankshaft has very little resistance and the rotor spins quite easily in gear. I really dont want to risk any damage. I just gotta find a flippin rotor holder from somewhere..

If anyone will flog me one, ill pay a good price

[tedmagnum]

I have finally found what i need.

I was searching for the wrong tool. The tool i need is called a:
"strap wrench"

I prob searched in every different search heading imaginable apart from the most obvious... lol

[paultheold]

Call me smug but I did say a Strap Wrench

[tedmagnum]

your smug

but you were also right, sooo, one Blue peter badge in the post