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Main Area => Projects / Builds, Racing and Tech => Topic started by: Joolstacho on December 15, 2015, 04:40:12 PM

Title: Damper rod hex size?
Post by: Joolstacho on December 15, 2015, 04:40:12 PM
Does anyone know the size of the hex in the top of the GS500 damper tube? A feller I know has one that's spinning with the 6mm socket head bolt, he's loosened it with a rattle gun but it won't come out completely.
I seem to remember when I did my seals that the damper tube had a hex in the top, and it should be easy to make a tool out of a bolt head to fit in the hex to stop the rod spinning. Size across flats anyone?
In the past in this situation I've used a length of wooden dowel to push down onto the damper tube to stop it turning, but a 'proper' hex tool would be a more elegant solution eh?
(Or more pragmatic, just carve a tapering hex on the bottom of a length of dowel).
Size?
Title: Re: Damper rod hex size?
Post by: Big Rich on December 15, 2015, 07:47:12 PM
Ahhh.... it was mentioned in Baltimores video on Youtube, wasn't it? I remember it was something like "slightly smaller than 3/4"", but maybe Sledge said it was 18mm?

Sorry Jools, just woke up and I'm working from memory.
Title: Re: Damper rod hex size?
Post by: Joolstacho on December 15, 2015, 08:49:32 PM
Well big boy, 18mm is slightly smaller than 3/4" so that sounds like it, ta mate.
(I'd better check the vid too.)
Title: Re: Damper rod hex size?
Post by: Joolstacho on December 15, 2015, 09:08:25 PM
Well ya gotta laugh eh? On the youtube clip EXACTLY where  he mentions the hex size, the sound drops out!!!
I think earlier he mentions 5/8th... Hasn't the penny dropped? Haven't these fellers heard that Japanese = Metric?
Title: Re: Damper rod hex size?
Post by: Joolstacho on December 21, 2015, 03:29:27 PM
Just to finalise this question. The size is: 23.7mm or 15/16". A bolt this size fits into the top of the damper tube and stops it spinning whilst undoing the lower slider socket head screws.
I put together a rod made from an old Norton wheel spindle with a 15/16" AF head, and a length of steel tubing. I drilled and pinned these together. The rod needs to be at least 450mm long.
-Jools