Kombi extension shaft repair

[benpritchard]

Both metal ends of my carbon fiber extention rotate up to a quarter.. anyone know how to fix this.. it's not the detatchable collar, the bits that are built on to the shaft. It wobbles side to side with the vibration from the saw head, especially with a pushing chain.

 

Cheers

Edited December 15, 2018 by benpritchard

[htb]

Araldite ?

 

[Ratman]

Delicately drill a hole a third away from centre of your shaft then you dont interfere with your central drive and roll pin?

[benpritchard]

So....   Drill a hole and fill with araldite?

[Yournamehere]

I've use an oregon mulcher head a lot with an old chinese* combi which I use to save wrecking anything good as the mulcher  puts a tremendous torque on the kit and does exactly this ie wears the securing holes in the tube to an oval which then becomes loose.

I drilled extra holes in the tube and castings, tapped the casting to M6 and put two extra screws of just the right length - ie to go into the tube but so far as to foul the spindle - in to hold the tube more firmly. It still loosens eventually - such is the torque off the head - but not so soon as before. And when it has gone oval again I turn through 180 degrees and repeat and when/before it has gone/goes oval again I look on ebay for a spares/wrecked combi in the local area and get a new set of tubes for a tenner.

And repeat.

Don't know if this would work with a c.f. tube but yer welcome to it anyway.

Happy days

Yourn.

 

*Big engines made of big parts; not so highly strung as more expensive alternatives.