> >If> >you can find a (in my case) 3/8inch rope pulley with sides exactly
3/8inch> >apart, AND rising higher than halfway up the sides, these 'walls'
will
> >prevent the tubing from deformation outwards>
> Failing that, perhaps a cast-iron blank from one the > model-engineering
suppliers, or a pulley _nearly_ the right size, > might be persuaded to do
duty after massage on a friendly nearby > lathe. You'll probably need a
heavier one than my Cowells 90, though!>
> But thinking further, my bender for 15mm copper plumbing pipe has
> aluminium "pulleys", so that would be easier to machine, if more >
expensive in raw materials.>
> In any case, I'm sure I've seen advertised little benders like > miniature
versions of the one mentioned above - maybe their range of > sizes (usually
3, from memory) does not cover the aluminium pipe preferred for fuel
carrying. More research needed ...> regards> Rowland
Cheers,
First, thanks for all the (I think) accolades. The piece was
written in a fit of pique - but another time.
After having read a number of retorts (ribald ripostes,
actually)it occurred to me that I might get some sample pulleys if your
local metalhoarder doesn't stock same. If driven, I might even dig out the
offal and read the maker's name for those in NA.
Whatever,
Ferg
|