Tethers

Actualy, the only pivot in the Gravity system(actualy, Hammerhead had the first of those, with Flip as second)is at the back of the flipperarm, not on the ram whatsoever.
And in Gravity the hinges are based around M20 bolts.

Weve got another one of those threads where everyone assumes what everyone else means, havent we? Im beginning to think it might be handy to have a forum glossary somewhere; even if the definitions arent scientifically accurate, it would be nice if everybody knew what everyone else meant in the context of this forum. (Translational spinner would be another good one to add.)

Jim: Going off Richards definition, I suspect the points in question are of the mathematical infinitely small variety used in two elephants connected by light inextensible string examples (as much of my maths A-level was).

That is, a single point connection doesnt constrain movement to a single axis - its a ball and socket joint. Put two ball and socket joints on the flipper and you have the equivalent of a conventional hinge. So its a double point so long as it constrains the axis of rotation of the flipper.

But, to be honest, I have no idea what Im talking about. It depends whether were talking about the flipper in three dimensions, or a two-dimensional diagram of it in the plane of its motion. Christian seems to be going with the latter interpretation, Richard with the former. The numbers are plausible either way around.

(I got called an anorak on LBC radio recently. Youd never guess...)

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Fluppet

M24 Bolts.

WJ: Slightly off-topic, but how *does* Gravitys ram activate the flipper? Is it just mounted vertically under it, and pushes it (and presumably slides along it a bit)? Just making sure that my assumptions are correct.

Ta,

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Fluppet

Right on the money, Andrew :

http://httpd.chello.nl/~wj.dijkstra/...s/grav3003.jpg

Aha! Thanks!

(Whoohoo, I got something right for once. :-)

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Fluppet

anderw you read me wrong i meant for the end of the ram so it runs smoothly
and the tether will be below the ram fixing point but can some one send me an ilistration of the 3 point i cant picture it

i also ment to say it will be in a gap between 2 1 squaire bars and that will limit sideways movement i think lol

I will try to put up an illistration under my profile later tonight. Note that it will be my version of it, and it may not be 100% correct.

thanks