On Jul 21, 2013, at 1:42 PM, trevannan wrote:
> Hi
> I have an early classic Europa , the outrigger wheels have now given
up the ghost. I am sorry I know this has all been discussed before but
can anybody let me know where I can get some new ones?
> Roger GBWIJ
A while back I did some back of the envelope computations and as I
recall I figured that on touch down we are asking our outrigger wheels
to spin up from zero to 5000 rpm in an instant.
I can't vouch for the math today, but decided at the time that it was
worth my time to investigate a bit and discovered the world of precision
bearings...I now have some 100mm wheels with ABEX #9 bearings purchased
at a inline skate shop...still building, so no direct experience.
I had originally substituted sealed roller bearing wheels for those
which were supplied w/ the kit; however, I had second thoughts about
using them after seeing the identical wheel on supermarket carts...in
this use, they are rarely subject to extreme accelleration.
These wheels w/ the ABEX #9 bearing spin up like there's no tomorrow.
Fred
A194
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