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Posted by Christopher Tidy on May 9, 2008, 1:42 pm
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John wrote:
>
> Austin Shackles wrote:
>
>>Anyone know where to find any?
>>
>>
>>I'm looking for summat like 18" dia by 18" long, 2 off.
>>
>>dia is variable up to a point, 16" or 20" might be OK too.
>>
>>I'm trying to make a motorised roller - got an engine from an old mower. I
>>have in mind to make hollow rollers which can be filled with water when
>>needed for extra weight. Might add an eccentric so it'll vibe, too.
>
>
> You really need 2 eccentrics rotating in opposite directions and timed
> so that the horizontal vibrations cancel but the vertical ones add.
> The weights need to be together at the top and bottom but when one's
> at 3 o'clock, the other's at 9 o'clock.
>
> Large steel pipe's not so easy to get hold of since everything went to
> plastic. You need a fairly thick wall as well to take the mechanical
> forces. I made my roller many years ago and filled it with concrete.
> The removal company loved me when I moved house.
Is that how they work? That's interesting.
Or he could just buy one of the many excellent Dennis lawnmowers around,
and use that as a roller.
Best wishes,
Chris
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> Austin Shackles wrote:
>