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 Post subject: Bendix 24v E-80 starter
PostPosted: Wed Nov 11, 2015 3:25 pm 
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Wing Commander

Joined: Tue Jan 25, 2011 2:03 pm
Posts: 233
Does anyone know the correct Bendix 24volt E-80 model number for a R-1340 in a T-6? I'm also looking for it's weight ?


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PostPosted: Thu Nov 12, 2015 2:53 pm 
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12 volt (Eclipse type C-20 or H-2) 33 lbs. from the T-6 TCDS http://www.airweb.faa.gov/Regulatory_an ... 20R-16.pdf

Harvard 2, 2A Eclipse M2087H (12 volt inertia starter)
Harvard 4 Eclipse 915-7-A (24 volt inertia starter)

LT-6G Starter, G-5 weight is 34 pounds from T.O. 1T-6G-5 26 June 1962. I think this is also an inertia starter.

E-80 manuals can be found here: http://www.csobeech.com/files/E80-Eclip ... Manual.pdf

Duters& Sprayers doesn't show the E-80 to be applicable for anything largr than an R-985, so not suitable for a T-6: http://www.dustersandsprayers.com/PDF%2 ... 20List.pdf


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PostPosted: Fri Nov 13, 2015 8:22 pm 
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Wing Commander

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If you call Covington, they see 1340's & t-6's come in constantly with Bendix E-80 starters.

The only 2 starters allowed by the T-6 rules in Reno is the Jack & Hines or the Bendix E-80 starter.

http://blog.racingt-6.org/?page_id=160

"10. The engine shall be a Pratt & Whitney R-1340 AN-1 [un-geared] or Canadian S3H-1 version with
a 10:1 blower and 6:1 compression ratio. All engine accessories must be operational including the
starter, generator/alternator, and hydraulic pump. Generator/alternator shall be 12 or 24 volt. The
starter shall be #80 or Jack & Heintz JH-6.
Magnetos shall be Bosch no. SB9RU3 or Bendix no.
SB9RN. No exceptions. Blower may be polished. Timing and spark plugs optional."


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PostPosted: Mon Nov 16, 2015 3:53 pm 
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What is your goal? To find FAA documentation authorizing use? To calculate a weight and balance?


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PostPosted: Wed Nov 18, 2015 1:12 pm 
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Corporal

Joined: Thu Mar 19, 2015 10:35 am
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Bendix intended the E-80 to be used for engines of no more than 1000 cubic inch displacement. It will bolt on to an R-1340 and crank it but that is very hard on the gear section which wasn't designed for the resulting load. If a gear tooth breaks or a ball bearing comes apart in the gear section, very expensive damage will occur. If you want to take your chances, E-80 Type 756-21B or later (letter suffixes denote minor changes, most significant being oil seal).


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PostPosted: Wed Mar 16, 2016 6:54 am 
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Lance Corporal

Joined: Sun Oct 27, 2013 5:53 pm
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So would I conclude that we should replace any Bendix starters with J&H if a replacement is needed?


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PostPosted: Mon Mar 21, 2016 9:53 am 
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Corporal

Joined: Thu Mar 19, 2015 10:35 am
Posts: 12
Smaehr wrote:
So would I conclude that we should replace any Bendix starters with J&H if a replacement is needed?

The only approved 24V starter for T-6 that I know of is Type 915 which is also probably the least expensive. In the immediate post-war period, North American actively supported civilian T-6's so it's possible there may be a Service Bulletin authorizing another starter but I've never seen one. I think that the JH3, JH6 and Eclipse 1416 were all for R-1820/R-1830 but surplus dealers had the clutches reset so they would work safely on R-1340. The 1416 was used on new production AgCats and Thrushes so it should be possible to get a field approval for other R-1340 powered aircraft. Of course, all the FAA inspectors who knew anything about T-6's are dead so you don't have to worry too much about the "approval".


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PostPosted: Tue May 03, 2016 10:03 am 
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Wing Commander

Joined: Tue Jan 25, 2011 2:03 pm
Posts: 233
I checked my logs and my G model has had an JH-6 starter since the mid 50's when it was still in service with the USAF @ BARTOW. I've seen a number of other 6's also running the Bendix 80 starter and I'm primarily interested in the weight savings when mine is due for overhaul. Covington doesn't have anything negative to say about putting one on the 1340 either. I'll ask around and see what else I can find from the 1340 pro's.


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