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All,
What do people use as a low profile front wheel on 2WD feathers? Im going to have a wheel at either end of a short and wide shape, but itll need some support at front middle.
At the Manchester social the big nipper guys (I think - tho I never did get the name of the bloke who was talking about it) brought a feather spinner with a cool sort of ball-bearing slider thing on the front - where can you get those from? Or did you make your own?
Thanks
-- Kev
get them from RS, http://rswww.comhttp://rswww.com
you could just use abit of nylon or polycarb.
OK - any hints as to what theyd be listed as on RS?
Cheers
-- Kev
I think what youre looking for is called a Ball Transfer Unit.
Cheers all, Ill go and have a dig.
The rs ones are a bit fat for a feather. Try http://www.euroballunits.co.uk/http://www.euroballunits.co.uk/
The RS flange fitting ones arent fat if youve got room inside your bot for the dome. Weve used 687-584 in our feather and the clearance is reasonably small.
OK thanks for the replies - gives me something to go on - I was looking at the RS flange ones, and I should have space for the dome so I should be ok.
Cheers
-- Kev
Dont remember talking to you about this but my memory isnt as good as it used to be :) The ones in that robot came from the scrap yard. They came of a sliding table kind of thingy that was used to manually move BIG blocks of steel around. I think each one can take 1000kg of load! They were a bit big really and since then we replaced them with blocks of Nylon to save on weight.
We did look at the RS ones and they seem very good. We still have a handful left and if your going to Newark Ill bring some.
I found that the ball transfer units tended to fill up with dirt and then just stick, it basically became a metal wear pad. You could flush the dirt out but it was a bit of a pain. Thats why this year Im using nylon skids on my robot.
Another option is nylon wheels pointing forwards but they can slide sideways fairly easily. This can help with making your robot go in a straight line.
Richard Wenman
Team Mayhem