<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
>>
I feel that anything that can present a harder surface to the impact of
gravel will help.  A coat of epoxy may be good at preventing "dings" in
micro.  Of course, this is only a feeling having no test background.
Thinning the epoxy with acetone may even help saturation of the micro.
Difinitive testing needs to be done.
Regarding vacuum air pumps; buy the best available pump for your engine.
Treat it right with filters changed regularly.  Make sure to avoid
contamination during maintenance.  Any blast cooling over the fins will
extend pump life.  (Why do they put fins on the pump case?).  Change the
pump for a NEW one at pump TBO.  Install a back-up vacuum source.  With this
type preventitave maintenance you may never have it turn on.
Walter Dodson, IV-P w/ back-up vacuum source

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>