Rotax questions...a few more!

[drseti]

I for one would love to see such pics.

Me too!

[roger lee]

Hi Paul,
"Per maint. manual, 05-20-00 p. 16, para. 15: Every 100 hours unless using leaded fuel, in which case every 50 hours per footnote 1"

Paul this was changed in a bulletin. SI-912-016 R1

Some of these things are the exact reasons Rotax update schools are advisable.
I have another update myself in March and then a week more in May. Remember these manuals are written for general use applications, 3 different engines, worldwide distribution and everyones different installation in the cowl. Some interpretation is necessary for your particular use.

Read SI-912-016 R1. 100LL 25 hrs. All Rotax publications recommend that all fluid changes and plugs be shortened in extreme conditions which include any flight school. Your numbers you're quoting are for private users that may put on 50-100 hrs. per year, not a school with hard up/down, low rpm and constant use. these are even more reasons why your maint. intervals should be shorter. There are numerous items in the manuals that need to be changed and taught differently in class. Some instructors vary on what is taught. Continuity has been an issue at times and may soon be addressed at the instructor level.



There are things that are hold overs from years past and aren't as advisable as they once were because we have newer data and many more thousands of hours to make better recommendations on.

Here is a good example. Who here can tell me what the proper restrictor size is for the recirculation line?
Look in the Installation manual.


Nobody should be doing 200 hr. plugs.

"Less of a problem is aircraft that use the standard Rotax exhaust system (with slider joints and springs) than it is in my plane. Evektor uses flex pipe sections from each exhaust port. The lead makes them no longer flexible, and that's where the cracks start."

This is more a design problem and not a Decalin problem. It may be your rib flex pipe design. I which case that means extar maint. is required due to the design and 100LL use. 100LL use cost extra money for its use and the maint. because of its use. Are those flex pipes stainless? I would replace those flex tubes several times over before leading my engine and paying the big bucks to fix it. What's more expendable?


I understand if you can't get 91 oct. without alcohol if it is an aircraft tank issue..

Using 100LL in a humid climate will cause the humidity to react with the lead and form an acid which etches valves and everything else. It is pulled up through the exhaust on cool down.
Why do you think so many Continental's and Lycoming's need top ends or major maint. before TBO? 100LL leads the way. (among other things)


p.s.
Don't forget the underlined question.

[drseti]

Some of these things are the exact reasons Rotax update schools are advisable.

Agreed. I took my last update a year and a half ago, at Lockwood. Going back for more later this year.

I understand if you can't get 91 oct. without alcohol if it is an aircraft tank issue..

Bingo! Ethanol attacks the sealant in the wet wings.

[roger lee]

Hi Paul,

You should try a different instructor. Try Ronnie Smith down in Mississippi. Won't hurt and he may put a different slant on some things.

There has to be someone to take a shot at this question.

Who can tell us what the proper restrictor size is for the recirculation line?
Look in the Installation manual.

[3Dreaming]

Who can tell us what the proper restrictor size is for the recirculation line?Look in the Installation manual.

I know what you are trying to do.

[FastEddieB]

Who can tell us what the proper restrictor size is for the recirculation line?Look in the Installation manual.

I know what you are trying to do.

I don't even have to look.

27.5 cubits!

[drseti]

Riiiiight! Whassa cubit?

[drseti]

Try Ronnie Smith down in Mississippi.

Actually, Roger, I'd really like to take a class from Ronnie. Having done Rotax training with Brian and Carol, with Iron Mike, with Dean, and with Eric, he's the only one left on my list!

[FastEddieB]

Riiiiight! Whassa cubit?

Might be time to bone up on your Old Testament!

[drseti]

No, Eddie, it might be time for you to brush up on your Bill Cosby.

[Merlinspop]

Who is this really?

Am I on Candid Camera?

[roger lee]

I only use Eric any more. I always get the latest and straight info plus it's much more in depth.

So know one here is going to throw out the answer from the Installation manual?

Come on be brave, venture into the deep end.

This is only to prove a point that you shouldn't always believe what you see in print. You can't alway hang your hat on a spec unless you know it to be true which only comes from schooling and not Joe the neighbor.

[David Pavlich]

No, Eddie, it might be time for you to brush up on your Bill Cosby.

Has to be one of the all time great Cosbyisms!!!

David

[MrMorden]

Riiiiight! Whassa cubit?

It's shorthand for "yards per cubic furlong".

It's technical.

[rsteele]

These weird units remind me of Vax VMS. An operating system from years back from Digital Equipment Corporation.

One of the system call you could make took a parameter in units of Microfortnights. I'm guessing one of the technical writers was a bit bored, or maybe the guy that wrote the system call. I never got around to testing it - wish I had now.

Sorry, back to Rotaxes now.

Ron