Re: Light-Sport Aircraft Yahoo group Military Rotax 912/914 with fuel injection..

I keep reading of TBO on auto engine conversions. Where do we find a TBO published for an auto conversion. I know that modern auto engines properly cared for with routine maintanence are lasting 500,000 miles + these days. It's usualy the stuff that's hung on around the engine that gives up first. Aero engines are given a TBO after many hours of documented test runs, and later modified as real life field experiances show better or worse lifetimes than initially expected.

Many Continental engines list TBO as 1200 for the E-165 to 1800 hours for the IO-420, while Lycoming run from 1200 in the case of the TSIO 540 up to 2400 hours for the O 235. Field experiances and improvements has allowed the TBO for some Continentals to move up to the 2000 hour mark now.

Who certifying, testing, the auto engines for XX hours to wear limit? And what are those wear limits??

--- In Sport_Aircraft@yahoogroups.com, "apollonorthamerica" <apollonorthamerica@...> wrote:
>
> Hi Peter,
> Having done hands on about a dozen car engine conversions (Suzuki and Subaru) on aircraft, I think you have got this wrong:
> "A late model car engine in a plane would likely reach a TBO of 2000 hours with only oil filters plugs and timing belts"
>
> I don't think that will happen quite like that :).
> Auto engine conversions can reach the TBO in isolated cases. Sometimes a certain combination of parts makes a system that will reach TBO but they are rare.
>
> Rotax reaches its TBO and beyond because it -IS- designed from the get-go as an aircraft engine. Just not the 1950's tractor technology aircraft engine.
> Abid
>
>

------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Sport_Aircraft/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/Sport_Aircraft/join
(Yahoo! ID required)

<*> To change settings via email:
Sport_Aircraft-digest@yahoogroups.com
Sport_Aircraft-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
Sport_Aircraft-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/