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Heavy duty starter for Rotax 914

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Roland

Joined: 30 Nov 2009
Posts: 334
Location: EDLE

Posted: Tue Oct 13, 2015 2:43 am Post subject: Heavy duty starter for Rotax 914

Hi all,



since I'm planning to move (the much lighter) LiFePo battery 

http://www.accu-24.de/ALIANT-LiFePO4-Ultralight-Battery-X4-13-2-V-92-Ah  from the baggage compartment onto the right footwell and having to change the Rotax sprug clutch this winter (lots of kick backs on starting), I'm also thinking about installing a heavy duty starter like this one http://silent-hektik.com/UL_912_Anlasser.htm .



I seem to remember, that it's most advisable to retrofit it on the 912 S with its higher compression.



Did anyone of you install such a heavy duty starter on the 912 or 914 or is it just overkill for this engine?



Regards

Roland

PH-ZTI

XS TG 914

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gilles.thesee(at)free.fr
Guest

Posted: Tue Oct 13, 2015 2:13 pm Post subject: Heavy duty starter for Rotax 914

Le 13/10/2015 12:43, Roland a écrit :

 	  Quote: 	
		  

 Did anyone of you install such a heavy duty starter on the 912 or 914 or is it just overkill for this engine?


	


Hi Roland,



Never had a kickback or any problem on the 914 with a Hawker SB8 battery 

(2.7 kg) in the back, so you may want to make sure it has not something 

to do with the starting circuit.

FWIW



Mit Freundlichen Gruessen,

Gilles

http://contrails.free.fr

 	  Quote:

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Roland

Joined: 30 Nov 2009
Posts: 334
Location: EDLE

Posted: Tue Oct 13, 2015 10:51 pm Post subject: Re: Heavy duty starter for Rotax 914

Bonjour Gilles,



I think my kick back Problem is typical for a broken (worn out?) sprag clutch (that's also what Rotax suspects). The LiFePo battery is very strong and I think this Problem should be solved with a new sprag clutch.



However the long wiring between the battery and the starter is far from ideal, so I'll change it on this occasion as well.



The idea of the heavy duty starter arised, because the engine/starter has 650 hrs now and the engine has to be taken out anyway. Plus the cables should not be longer than 50 cm, which would be the case with the new battery position. So just nice to have, but certainly unnecessary.



What I've learned by now is, that several feasible approaches to the problem exist - and, that I'm not the only one having it 



Salut

Roland 

PH-ZTI 

XS TG 914

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ward.t(at)xtra.co.nz
Guest

Posted: Tue Oct 13, 2015 11:16 pm Post subject: Heavy duty starter for Rotax 914

Hi Roland,

Rotax 912s with original 912 starter is OK.

What one needs is a powerful battery.

I had a Panasonic Battery and in winter it was no good.

It eventually caused the sprag clutch to need replacing.

I was also going to upgrade to a more powerful starter.

Due to my Classic engine frame I could not fit the new starter.

So I put the original back and brought a Lithium IRON battery used in Motorbikes.

Powerful enough to turn over a 12tonne truck!

I worked so well. No more winter problems on starting.

Battery was the SHORAI POWER

 		 	 	 		 			 				 					

See http://shoraipower.com

CHEERS,

TIM 				

 			

 		



Tim Ward12 Waiwetu Street

Fendalton,

Christchurch,  8052

New Zealand.

ward.t(at)xtra.co.nz (ward.t(at)xtra.co.nz)

Ph 64 3 3515166

Mob 0210640221



On 14/10/2015, at 7:51 PM, Roland <schmidtroland(at)web.de (schmidtroland(at)web.de)> wrote:

[quote]--> Europa-List message posted by: "Roland" <schmidtroland(at)web.de (schmidtroland(at)web.de)>



Bonjour Gilles,



I think my kick back Problem is typical for a broken (worn out?) sprag clutch (that's also what Rotax suspects). The LiFePo battery is very strong and I think this Problem should be solved with a new sprag clutch.



However the long wiring between the battery and the starter is far from ideal, so I'll change it on this occasion as well.



The idea of the heavy duty starter arised, because the engine/starter has 650 hrs now and the engine has to be taken out anyway. Plus the cables should not be longer than 50 cm, which would be the case with the new battery position. So just nice to have, but certainly unnecessary.



What I've learned by now is, that several feasible approaches to the problem exist - and, that I'm not the only one having it 



Salut

Roland 

PH-ZTI 

XS TG 914





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=447921#447921





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kheindl(at)msn.com
Guest

Posted: Wed Oct 14, 2015 3:34 am Post subject: Heavy duty starter for Rotax 914

Tim,



Thanks for the info. But which of the 23 batteries did you choose ?

Cheers,

Karl



From: ward.t(at)xtra.co.nz

Subject: Re: Re: Heavy duty starter for Rotax 914

Date: Wed, 14 Oct 2015 20:15:49 +1300

To: europa-list(at)matronics.com



Hi Roland,

Rotax 912s with original 912 starter is OK.

What one needs is a powerful battery.

I had a Panasonic Battery and in winter it was no good.

It eventually caused the sprag clutch to need replacing.

I was also going to upgrade to a more powerful starter.

Due to my Classic engine frame I could not fit the new starter.

So I put the original back and brought a Lithium IRON battery used in Motorbikes.

Powerful enough to turn over a 12tonne truck!

I worked so well. No more winter problems on starting.

Battery was the SHORAI POWER

 		 	 	 		 			 				 					See http://shoraipower.com

CHEERS,

TIM

 				

 			

 		



Tim Ward12 Waiwetu Street

Fendalton,

Christchurch,  8052

New Zealand.

ward.t(at)xtra.co.nz (ward.t(at)xtra.co.nz)

Ph 64 3 3515166

Mob 0210640221



On 14/10/2015, at 7:51 PM, Roland <schmidtroland(at)web.de (schmidtroland(at)web.de)> wrote:

[quote]--> Europa-List message posted by: "Roland" <schmidtroland(at)web.de (schmidtroland(at)web.de)>



Bonjour Gilles,



I think my kick back Problem is typical for a broken (worn out?) sprag clutch (that's also what Rotax suspects). The LiFePo battery is very strong and I think this Problem should be solved with a new sprag clutch.



However the long wiring between the battery and the starter is far from ideal, so I'll change it on this occasion as well.



The idea of the heavy duty starter arised, because the engine/starter has 650 hrs now and the engine has to be taken out anyway. Plus the cables should not be longer than 50 cm, which would be the case with the new battery position. So just nice to have, but certainly unnecessary.



What I've learned by now is, that several feasible approaches to the problem exist - and, that I'm not the only one having it 



Salut

Roland 

PH-ZTI 

XS TG 914





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=447921#447921





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ptag.dev(at)tiscali.co.uk
Guest

Posted: Wed Oct 14, 2015 4:50 am Post subject: Heavy duty starter for Rotax 914

Hi! Gilles, Roland ...all

I fitted the Rotax heavy duty starter to the 914 in G-PTAG and no such thing

as even a sign of Kick Back but with the lower compression ratio of the 914

and a pair of Odessy 680 batteries left over from the original Jabiru 3300

installation the starting is instant.( did I mention Jabiru 3300 and no

problem in the same breath ? Blast..... not intended! Nightmares reducing !)

For sanity .....no such thing as "over kill" in this department !

Regards

Bob Harrison G-PTAG



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Duncan McFadyean

Joined: 18 Jan 2011
Posts: 219

Posted: Wed Oct 14, 2015 8:01 am Post subject: Heavy duty starter for Rotax 914

The heavy duty starter is quoted as being 1" longer than the original starter, although it looks longer than this; there was an earlier thread on this when the new starter first appeared, but a search doesn't bring this up.

   Anyway, the alternative sold by Silent-Hetik and referenced earlier in the current thread, is stated as being 15mm longer (and about half the price).

   Anyone checked whether the latter would fit with the Classic engine mount? Or care to measure what clearance is available with the original starter?

 

   Duncan McF

 

 

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dg.watts(at)talktalk.net
Guest

Posted: Thu Oct 15, 2015 7:18 am Post subject: Heavy duty starter for Rotax 914

Duncan

I too was interested in fitting a more powerful starter to my classic/912S Europa but today I managed to get a good look while doing another 50 hour service and I can confirm that it is NOT possible to fit in the extra 15mm length. There is only 12mm between the rear of the standard starter and the engine mounting frame upright.

Dave Watts

G-BXDY



On 14 Oct 2015, at 17:00, ami-mcfadyean(at)talktalk.net (ami-mcfadyean(at)talktalk.net) wrote:

[quote] The heavy duty starter is quoted as being 1" longer than the original starter, although it looks longer than this; there was an earlier thread on this when the new starter first appeared, but a search doesn't bring this up.

   Anyway, the alternative sold by Silent-Hetik and referenced earlier in the current thread, is stated as being 15mm longer (and about half the price).

   Anyone checked whether the latter would fit with the Classic engine mount? Or care to measure what clearance is available with the original starter?

 

   Duncan McF

 

 

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