Bendix Mags

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Can anyone give me some idea what this set of mags are worth? I removed them from my 7AC and replaced with Slick mags. They were working just fine when removed. Comes with plug wires and spark plugs.
 

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How much do you want for the whole set, mailed to the east coast? I could use these for a flybaby I'm trying to bring back from the dead.
 
He replaces SF4 Scintillas with Slicks. That's sort of different.

Sure - a lot of us have replaced Slicks with S4s and impulses. Bulletproof mags.

As to the value of SF-4 mags, once you guys figure it out I have some to sell. And a pair of shielded Eisemanns.
 
JackC said:
Just curious why you replaced bendix with slicks?
Click to expand...
Im not sure at this point. I purchased a good used engine that had the Bendix mags. When I swapped the engine I installed my Slick mags off my old engine because the guy I bought the engine from said the Bendix were good but could interfere with the radio where my Slick mags did not.
Maybe I should keep them for a backup.
 
Bob Turner said:
He replaces SF4 Scintillas with Slicks. That's sort of different.

Sure - a lot of us have replaced Slicks with S4s and impulses. Bulletproof mags.

As to the value of SF-4 mags, once you guys figure it out I have some to sell. And a pair of shielded Eisemanns.
Click to expand...
Thanks for the input. Makes me second guess what Im trying to do.
 
No - you are doing the right thing. Slicks are definitely less noisy. The lunchbox mags are pretty much obsolete, although with good magnets they are more than satisfactory. Some may have platinum points!

The problem with Slicks, as I understand it, is they need to be gone through every 500 hours. That may be a good idea with any mag, but the S4s are said to be bulletproof for a lot longer than that. And I believe the SF-4s go a long time as well. They have automotive bearings and seals, and probably were standard equipment on Massey Ferguson. You can bet the Case mags were standard on tractors, too.

I have a set of S4s in the shop now, for their "500 hour" inspection. They will replace the Eisemanns on the J4. I would hesitate to even guess what these older mags are worth - remember, I got severely chastised for opining on Cub values (not here, but it was a pretty good attack!). I know lots less about the value of used mags.

I will not offer any of mine until yours sell -
 
Bob Turner said:
No - you are doing the right thing. Slicks are definitely less noisy. The lunchbox mags are pretty much obsolete, although with good magnets they are more than satisfactory. Some may have platinum points!

The problem with Slicks, as I understand it, is they need to be gone through every 500 hours. That may be a good idea with any mag, but the S4s are said to be bulletproof for a lot longer than that. And I believe the SF-4s go a long time as well. They have automotive bearings and seals, and probably were standard equipment on Massey Ferguson. You can bet the Case mags were standard on tractors, too.

I have a set of S4s in the shop now, for their "500 hour" inspection. They will replace the Eisemanns on the J4. I would hesitate to even guess what these older mags are worth - remember, I got severely chastised for opining on Cub values (not here, but it was a pretty good attack!). I know lots less about the value of used mags.

I will not offer any of mine until yours sell -
Click to expand...
No, go ahead and offer yours if you want. I'm not convinced that I will be selling them yet and if I do, no worries. I'm not in any hurry here.

Thanks for your input also.
 
Back when I owned a Chief, my IA told me to go to a Case tractor dealer and buy a couple of sets of magneto points but not to mention they were for an airplane. They were $4 per set and said "FAA-PMA Approved" on the box.

There was an ad in a classic tractor magazine from a guy who overhauled tractor mags and he was apologizing for charging $125 to overhaul them but justifying it due to increased parts costs.

Edit; The $125 overhaul ad was a few years ago. I checked online and it looks like it's currently $300-400 exchange for an overhauled antique tractor mag. (Still beats airplane prices by a huge margin.)
 
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There may be a secret that saves bucks - if you can get the magneto shop to "IRAN" without paperwork you may be able to save $.

I am not really a "seller.". Once in a while some kid will come in my hangar needing something - if I know he is not wealthy he will leave with parts.
 
Bob Turner said:
There may be a secret that saves bucks - if you can get the magneto shop to "IRAN" without paperwork you may be able to save $.

I am not really a "seller.". Once in a while some kid will come in my hangar needing something - if I know he is not wealthy he will leave with parts.
Click to expand...
You're a good man Bob. Helping others who want to fly but just can't afford it is honorable. I once gave a Ivo Prop to a guy who needed one but was trying to get something cheap as he couldn't afford it. I also know of a guy who has two Cessna 150's who rents them to students for $40.00 an hour so they can afford to get their privates.

Thanks for your input.
 
I swapped slicks to bendix on my skywagon when I started getting a bad drop on the slicks, these mags were not even close to inspection time, I was like NOOPE, swapped to full bendix, they are just more durable, especially for a plane where if I got stranded I may very well get REALLY stranded.

The champ has eismann, which I was going to swap until I found out these things are bullet proof and have ZERO ADs, as in after all those years ZERO. I get some mild noise on the radio but not enough to be that much of a issue and these are not shielded even, plus I’m not exactly the guy who wears out the PTT button 😆
 
Bob Turner said:
He replaces SF4 Scintillas with Slicks. That's sort of different.

Sure - a lot of us have replaced Slicks with S4s and impulses. Bulletproof mags.

As to the value of SF-4 mags, once you guys figure it out I have some to sell. And a pair of shielded Eisemanns.
Click to expand...

I might be in the market for the shielded Eisemanns, though I’m not sure I’d want to mess with something that’s not broke lol

But

If you want a value Fresno air parts is the place to ask
 
I just sent a pair of S4s out for a 500 hour check. The shop came back with an estimate of roughly $1800 per mag. I can get exchange mags for half that. The shop is reputable.

Here is the way this is apparently going:

Bendix has a service manual that must be adhered to. The manual says "replace the pre-1990 core and any riveted impulse couplings."
Those two parts alone are around $700 per mag.

The tech said the old cores are bulletproof - he just has to adhere to the manual. The impulse AD applies only to 6-cylinder mags on certain engines, but the manual says replace them anyway.

Twenty years ago I got a set of mags overhauled for $35 each. Inflation has struck.

I am going to get a buddy to check these mags on his machine, and use them. I will, of course, check the ADs - there are a couple that do apply.

And there may be one AD on the coil of the Eisemanns. Ours have been done.
 
Bob Turner said:
I just sent a pair of S4s out for a 500 hour check. The shop came back with an estimate of roughly $1800 per mag. I can get exchange mags for half that. The shop is reputable.

Here is the way this is apparently going:

Bendix has a service manual that must be adhered to. The manual says "replace the pre-1990 core and any riveted impulse couplings."
Those two parts alone are around $700 per mag.

The tech said the old cores are bulletproof - he just has to adhere to the manual. The impulse AD applies only to 6-cylinder mags on certain engines, but the manual says replace them anyway.

Twenty years ago I got a set of mags overhauled for $35 each. Inflation has struck.

I am going to get a buddy to check these mags on his machine, and use them. I will, of course, check the ADs - there are a couple that do apply.

And there may be one AD on the coil of the Eisemanns. Ours have been done.
Click to expand...

Ouch!

The Eisemann AD “AM-4, AM-6, LA-4, and LA-6 - Electrically shorted windings” does not apply to the black coils
 
Turns out I can't get them for half - the exact part# is around $1500, and the superceding part - 10-500514-1 - is $1300. It could be they would reject my cores because they are older - I have to check that.

Overhauled mags are over twice what I paid for my Cub.

Oh- some poster on the Cub site is selling overhauled SF-4s for a grand each. I remember Flo Irwin handing me one for $35, Navy overhauled.
 
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