Vacuum

[J D Bean <JohnBean@compuserve.com>]

I am about to do some detailed planning and pricing of the instrument fit I
can afford (rather than what I would like).

I notice that the Rotax manual specify an Airborne 211CC vacuum pump.

Looking through all the catalogues etc I see that this pump has been
superceded with a 215CC model.

I also see pumps labeled AA211CC.

Can anybody enlighten me as to what these differences are and also if other
pumps would be suitable (ie Sigma-Tek 211CC etc.)?

Thanks

John Bean very slow build kit 23