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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Tue Dec 15, 2009 8:49 am Post subject: New 912 TBO |
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Morning Gang:
I sent this one a couple hours ago. Must have gotten lost in cyber space.
Rotax has announced new TBO, by serial number, the the 912 series engines:
Eric Tucker, the founder of Rotax Flying Club and developer of training
programs for Rotax Aircraft Engines, said "The upgrading of components
within the engine, and the significant improvements within the past few
years, shows a commitment and faith in the light aircraft community. With
LSA category aircraft becoming more accepted worldwide the increase in TBO
helps owners and operators using Rotax Aircraft Engines get the best value
in propulsion. 20 years ago this year Rotax put the 4 stroke 9 series on
the market, with a 600 hour TBO, today the 2000 mark is a milestone that is
welcome and deserved."
http://www.rotax-owner.com/SI_TB_Info/ServiceB/SB-912-057-UL.pdf
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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herbgh(at)nctc.com
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| Posted: Tue Dec 15, 2009 9:20 am Post subject: New 912 TBO |
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Strange that the 912 gearbox has a 2k hr tbo while similar gearboxes
on 2 strokers have much less! Herb
At 10:48 AM 12/15/2009, you wrote:
| Quote: |
Morning Gang:
I sent this one a couple hours ago. Must have gotten lost in cyber space.
Rotax has announced new TBO, by serial number, the the 912 series engines:
Eric Tucker, the founder of Rotax Flying Club and developer of training
programs for Rotax Aircraft Engines, said "The upgrading of components
within the engine, and the significant improvements within the past few
years, shows a commitment and faith in the light aircraft community. With
LSA category aircraft becoming more accepted worldwide the increase in TBO
helps owners and operators using Rotax Aircraft Engines get the best value
in propulsion. 20 years ago this year Rotax put the 4 stroke 9 series on
the market, with a 600 hour TBO, today the 2000 mark is a milestone that is
welcome and deserved."
http://www.rotax-owner.com/SI_TB_Info/ServiceB/SB-912-057-UL.pdf
john h
mkIII
Checked by AVG - www.avg.com
12/15/09 07:52:00
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Tue Dec 15, 2009 9:33 am Post subject: New 912 TBO |
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> Strange that the 912 gearbox has a 2k hr tbo while similar gearboxes
| Quote: | on 2 strokers have much less! Herb
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Don't know why, for sure.
-Pressure lube
-Much heavier contruction.
???
john h
mkIII
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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slyck(at)frontiernet.net
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| Posted: Tue Dec 15, 2009 9:45 am Post subject: New 912 TBO |
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It may be a matter of harmonics or some other difference in stress imposed by 2 stroke vs four cylinders.
The 912 runs pretty smooth.
BB
On 15, Dec 2009, at 12:15 PM, Herb wrote:
| Quote: |
Strange that the 912 gearbox has a 2k hr tbo while similar gearboxes on 2 strokers have much less! Herb
At 10:48 AM 12/15/2009, you wrote:
>
>
> Morning Gang:
>
> I sent this one a couple hours ago. Must have gotten lost in cyber space.
>
> Rotax has announced new TBO, by serial number, the the 912 series engines:
>
> Eric Tucker, the founder of Rotax Flying Club and developer of training
> programs for Rotax Aircraft Engines, said "The upgrading of components
> within the engine, and the significant improvements within the past few
> years, shows a commitment and faith in the light aircraft community. With
> LSA category aircraft becoming more accepted worldwide the increase in TBO
> helps owners and operators using Rotax Aircraft Engines get the best value
> in propulsion. 20 years ago this year Rotax put the 4 stroke 9 series on
> the market, with a 600 hour TBO, today the 2000 mark is a milestone that is
> welcome and deserved."
>
>
>
> http://www.rotax-owner.com/SI_TB_Info/ServiceB/SB-912-057-UL.pdf
>
> john h
>
> mkIII
>
>
>
>
>
>
>
>
> Checked by AVG - www.avg.com
> 12/15/09 07:52:00
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Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
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| Posted: Tue Dec 15, 2009 5:48 pm Post subject: Re: New 912 TBO |
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It is harmonics/vibration and different internal parts in the 912 are stronger.
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Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056 |
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Dennis.Kirby(at)kirtland.
Guest
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| Posted: Wed Dec 16, 2009 12:02 pm Post subject: New 912 TBO |
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Hauck wrote: << Rotax has announced new TBO, by serial number, for 912 series engines: >>
John / All –
In reading the referenced Rotax Service Bulletin, I notice that the 912UL is clearly absent from the TBO extension discussion.
They mention the 912A and 912F (certificated engines) and the 912S are given TBO extensions, assuming that all the specified Service Bulletins have been accomplished.
You think this means that the 912UL is still stuck at 1200 hours TBO?
Dennis Kirby
Mark-3, 912ul, in
Sandia Park, NM
[quote][b]
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Wed Dec 16, 2009 2:23 pm Post subject: New 912 TBO |
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Dennis K/Gang:
Depends on what your Serial Number is. Could be 1,000; 1,500; or 2,000 hours.
TBO is spelled out in this reference for the uncertified versions:
http://www.rotax-owner.com/SI_TB_Info/ServiceB/SB-912-057-UL.pdf
My feelings are, TBO's do not affect me and my engine because we are uncertified, experimental/homebuilt. I am going to run my engine until I get ready to tear it down. The TBO is primarily for Certified Engines. They must comply with it.
TBO doesn't mean the engine is going to last until the time designated. It is a figure Rotax has gleaned from the hours us users are putting on our engines. We are the operational testers for Rotax.
My own personal feelings about TBO's.
john h
mkIII
[quote] You think this means that the 912UL is still stuck at 1200 hours TBO?
Dennis Kirby
[b]
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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