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XS Firewall Forward Question

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kingsnjan(at)westnet.com.
Guest

Posted: Wed Sep 28, 2016 5:49 pm Post subject: XS Firewall Forward Question

Given an XS firewall forward, Rotax ring mount and 912 engine (80 HP)



If the 912 engine is replaced with a 912S (100 HP) engine, is it likely the larger starter motor will conflict with the intermediate frame between the undercarriage frame and the ring mount. 

Sent from my iPhone

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kingsnjan(at)westnet.com.
Guest

Posted: Wed Sep 28, 2016 6:10 pm Post subject: XS Firewall Forward Question

Sorry, email below accidentally went prematurely. 



I know some have had problems exchanging starter motors but don't fully understand the remedy. 



Thanks 

Kingsley in Oz



Sent from my iPhone



 	  Quote: 	
		   On 29 Sep 2016, at 11:48 AM, Kingsley Hurst <kingsnjan(at)westnet.com.au> wrote:

 

 Given an XS firewall forward, Rotax ring mount and 912 engine (80 HP)

 

 If the 912 engine is replaced with a 912S (100 HP) engine, is it likely the larger starter motor will conflict with the intermediate frame between the undercarriage frame and the ring mount. 

 

 

 Sent from my iPhone

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JonathanMilbank

Joined: 14 Apr 2012
Posts: 395
Location: Aberdeen area

Posted: Thu Sep 29, 2016 1:20 am Post subject: Re: XS Firewall Forward Question

Kingsley,



While I'm not best qualified to give you an answer, I built an early Europa Classic kit UK#54. In the past 19 years it has given me and many others much enjoyment and to quote Bud Yerly's website " After his career in the Air Force, he began looking and found the Europa was the finest flying sport aircraft hands down, with good cruise and excellent economy."



However there's one benefit I wish I could have in my Classic which the XS offers and that is the engine mount with intermediate frame which moves the engine about 8" or 20cm forward. This facilitates installing the longer-bodied starter motor.



Originally I had the excellent 80hp engine, but after changing undercarriage from mono to tri-gear, it became necessary to change from 80hp to 100hp to overcome the extra rolling resistance on grass, caused by the smaller wheels.



Historically the 100hp 912ULS unit had starting difficulties and various measures were introduced to overcome these, including the longer starter motor. Thus far I've found that my 912ULS can be started without "kick-backs", but I would be happier if I could also have installed the longer starter. The Classic frame simply won't accommodate it!



If you have the 80hp engine and it has the shorter starter, I would be surprised if you experience significant starting problems. But it seems that you're going for the 912ULS and I don't think you'll have a problem fitting the longer starter.

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Roland

Joined: 30 Nov 2009
Posts: 334
Location: EDLE

Posted: Thu Sep 29, 2016 1:41 am Post subject: Re: XS Firewall Forward Question

Hi Kingsley,



it you are considering the heavy duty starter, I can recommend this one http://www.silent-hektik.de/UL_912_Anlasser.htm 



It has 1KW and I installed it in my XS without problems.



Regards

Roland

PH-ZTI

XS TG 914

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kingsnjan(at)westnet.com.
Guest

Posted: Thu Sep 29, 2016 2:18 pm Post subject: XS Firewall Forward Question

Jonathan,



I appreciate the time you spent in replying thank you.



You have answered my question in that the intermediate frame on the XS will 

accommodate the longer starter motor.



A friend of mine accidentally ran his 912 (80 HP) without oil and ceased it 

so we are looking at the option of a 912S to replace it.  I was concerned 

that the longer starter motor on the 912S might not fit so am relieved to 

know now that it will.



Thanks again

Kingsley

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kingsnjan(at)westnet.com.
Guest

Posted: Thu Sep 29, 2016 2:47 pm Post subject: XS Firewall Forward Question

"A friend of mine accidentally ran his 912 (80 HP) without oil and ceased it 

"



Oops, I meant "siezed" not "ceased" . . . . .  can't even blame auto 

correct!



However, it certainly 'ceased' to run!



K

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kingsnjan(at)westnet.com.
Guest

Posted: Thu Sep 29, 2016 2:56 pm Post subject: XS Firewall Forward Question

Thank you Roland.  That's good to know should we ever be looking for a new 

starter only.



Regards

Kingsley



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