[f-AA] Bendix Scintilla Magnetos

[Donato Martino]

Any thoughts on Bendix Scintilla magnetos installed on the Continental 65?  Please post your experiences pro and con.

 

Thank you,

Donato

[David Rude]

I used SF4's from 1983 to 2017 when I sold the plane, they worked great, have no impulse coupling, rebuilt them in late 80's

[P S]

Rebuilt the ones on my C90 20 years 500+ hours ago, not a hint of a problem since.

Phil

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[Sal Capra]

I have been using mine two years now. 

Simple/effective/ efficient. 

Fresno has parts. 

I have another set on the shelf 

You can’t have. 

Sal Capra

Sent from my iPhone 

_______________________________________________

[Richard Holcombe]

They are better made than the Slick mags, both work fine if rebuilt properly as required.

[Duane Fey]

Donato,

I have some freshly overhauled Bendix mags on my C85 and they’ve been performing well.  I know it’s not an A65, but just thought I’d throw in some feedback. 

Duane

‘46 Chief, N85981

[dbfi...@gmail.com]

I have Bendix mags on my C90-12F, the motor is 300 hours SMOH but has not been run for years, I have it pickled while I rebuild the Champ, should I rebuild them (I know they work as they belted me when turning over the pistons ). Is there a preferred supplier for the rebuild kit?

Figs

[Mark McAtee]

I replaced the Case non-shielded for a pair of SF4RN-8's 2 years ago.  Nothing wrong with the Case after 35 years that I had them...just got tired of the noise on the handheld. I kind of miss the impulse couplings, but the Bendix have never failed to start (except when hot...occasionally).  I did find a pair of s4rn-21 (impulse) and -20 mags of the correct model for the 65.  Haven't put them on yet.  Maybe I will at the next annual.

---

From: Aeronca <aeronca...@westmont.edu> on behalf of Donato Martino <Don...@mail.com>
Sent: Thursday, July 12, 2018 7:55 PM
To: aeroncawestmont.edu

Subject: [f-AA] Bendix Scintilla Magnetos

[Roger Anderson]

Figs.  If you decide you want to get them rebuilt, I was really happy with this place.  It was recommended to me by someone else on this list when I had my Slicks serviced.  They are super nice people who will talk to you about what you want or need, and they do good work at a fair price with quick turn around.   roger 

http://www.aircraftmagnetoservice.net/

[Duane Fey]

Figs,

Savage Magneto, in Hayward, CA, does an excellent job. The guy is 85 years old and works slow, so doing it during a rebuild would be good. Not sure about a rebuild kit or DIY.

Duane

‘46 Chief, N85981

[David Rude]

Kelly Aerospace sells kits.

 

I rebuilt one of my S20's and bought one rebuilt from them. The rebuilt cost me about $650 after I sent in an old one for core.

[Mark Peterson]

I don't think you can, but can you mix S20s and SF4s?  I'm still having an issue with the right mag.  Flew for 1.7 hours yesterday in 70 degree "heat" and the right one was barely running when I did a mag check upon returning.  

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From: Aeronca <aeronca...@westmont.edu> on behalf of David Rude <dlr...@excite.com>
Sent: Friday, July 13, 2018 7:20 AM

[David Rude]

what engine? the engine TCDS may say

 

I have some NOS coils for SF4's, sounds like you have a coil issue

[David Rude]

this is from the A-65-8  TCDS

 

Dual, Scintilla S4RN -20, -21,SF-4R, S4LN-20 or S4LN-21,Eisemann LA-4or AM-4, Case4-CAMA, 4-CAME, 47(with impulsecoupling onEisemann andCase magnetosretard 25°) SlickElectro 443, or4003 (-8 Seriesonly) orCMI/TCM S4LSC-204 orS4RSC-21

 

 

this from the C-85-8 &12 TCDS

 

Bendix-Scintilla SF-4R, SF4RN-8,S4RN-21; EisemannLA-4, AM-4; Case 47;Slick-Electro 443 or4003 magnetos or CMI/TCM S4LSC-21

[Mark Peterson]

Thanks Dave... this is a A65-8F.   Can you have SF4s on the left and the S20 series on the right?

I put a NOS coil and new condenser from Fresno in the right mag a couple of years ago and it didn't solve the problem.   Wires scope well, changed plugs top to bottom and its still there.   Suppose I could have gotten a bad NOS, but what are the odds?

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From: Aeronca <aeronca...@westmont.edu> on behalf of David Rude <dlr...@excite.com>

Sent: Friday, July 13, 2018 7:37 AM

[John Franklin]

Donato,

My '41 Chief came with Scintilla mags and they worked just fine.  Because I had problems with starting the engine when it was hot, I was advised to put in mags with impulse coupler.  I also went to Aircraft Magneto Service and they are great, just like Roger A. says.  Couldn't have been more helpful.  Note that I bought Bendix mags because Slick would not take the old Scintilla as a trade-in.  The mag place admitted that Bendix only wanted to get the old Scintilla mags out of service, and it was a better deal for me.  

The irony was that the impulse coupler didn't help me with the hot starting problems, that was solved by procedure:  When shutting down, I shut off the fuel, set RPMs to 1200 and let the engine die of fuel starvation.  Then when I restart, don't prime the engine at all, just start flipping the prop.  BTW, the new Bendix mags work just fine as well.

Good luck,

John F.

'41 65CA Chief

Prairie Aire 4TA0

Needville, TX

-----Original Message-----
From: Roger Anderson <11...@comcast.net>
Sent: Jul 13, 2018 8:06 AM
To: aer...@westmont.edu
Subject: Re: [f-AA] Bendix Scintilla Magnetos

Figs.  If you decide you want to get them rebuilt, I was really happy with this place.  It was recommended to me by someone else on this list when I had my Slicks serviced.  They are super nice people who will talk to you about what you want or need, and they do good work at a fair price with quick turn around.   roger 

http://www.aircraftmagnetoservice.net/

[Harvey Brock]

  John/Donato,

     My hot start experience is much the same.  Both prop start Continental's I've flown restart hot much, much better if I shut the fuel off and let the carb empty. I simply turn the fuel back on a couple of minutes before restarting but do not prime. Most of the time, they start on the first blade.

Harvey, who has overheated a prop starter before I learned this trick.

---

From: Aeronca <aeronca...@westmont.edu> on behalf of John Franklin <jb...@peoplepc.com>
Sent: Friday, July 13, 2018 2:01 PM
To: aer...@westmont.edu; Roger Anderson

[Roger Anderson]

All my A65s have always been easy starters cold, if you knew the secret of that particular engine.  For most, it seems like 6 blades cold will do it, although my current new/old one likes 7 blades best.  However....when hot, nothing will flood easier than an A65.  Therefore, like Harvey, I never prime (pull through blades) when it's hot  unless it has been sitting for at least 2 hours.  And like Harvey, I always shut down by shutting off fuel.   Then when ready to start, I just make mags hot and start propping.  It will usually start on the 2nd through 4th blade.  And....I pretty much guarantee that if it has not started by the 8th blade, it is flooded, and you can prop for the next hour without it starting.  (My local A&P shop did just that...after I told him when ready, tell me and I would come up and start it...but he didn't).  When it floods, you are going to have to unload with 10 to 12 backward flips of the blade...with throttle full open...and switch off.  And...there is never a more important time when propping than the next step...that is closing the throttle before you next try to prop it.   My opinion.......roger

[Ian Harvie]

The original Bendix I got with the project were such a mess that I
traded them in on a set of Slicks. At the time they were offering a
great discount on the Slicks if you traded in. They were fine, but a few
years ago the coil in one failed. They gave me another coil for free
when I was next at OSH and complained to them.

Ian

On 13/07/2018 11:06 PM, Roger Anderson wrote:
>
> Figs.  If you decide you want to get them rebuilt, I was really happy
> with this place. It was recommended to me by someone else on this list
> when I had my Slicks serviced.  They are super nice people who will
> talk to you about what you want or need, and they do good work at a
> fair price with quick turn around.   roger
>
>
> http://www.aircraftmagnetoservice.net/
>
>
>> On July 13, 2018 at 7:44 AM dbfi...@gmail.com wrote:
>>
>> I have Bendix mags on my C90-12F, the motor is 300 hours SMOH but has
>> not been run for years, I have it pickled while I rebuild the Champ,
>> should I rebuild them (I know they work as they belted me when
>> turning over the pistons ). Is there a preferred supplier for the
>> rebuild kit?
>>
>> Figs
>>
>>

_______________________________________________

[Roger Anderson]

That’s what I did Ian. About 15 years ago traded my older Bendix with Mattatuck for new Slicks. At the time, $985 total including new harness. Can’t do that now. roger

Sent from my iPhone