I bought a leslie superfyton rs3l horn on ebay.
It was dead on two cylinders so i popped them apart and cleaned them up.
I ran a bead of “the right stuff” silicone and let it set up.
The next day i fired it up and one was weak.
During disassembly i flat sanded the ring seat that meets the steel diaphragm because it had deteriorated in a few spots.
This caused the horn not to work right so…
I chucked the housing in the lathe and was shocked at how out of whack the housing was.
I re-cut the outer edge that seals the outer edge of the diaphram and then re-cut a new seat into it.
Question,
Since the original edge waS NOT cut at the same depth as the outer edge, i need to know the optimum seat height.
Right now the seat is about .020 higher than the edge, giving the diaphragm a bit of pressure as its bolted together.
it works great now, but since i do not know great from right, i would rather have it right, before i mess up the diaphram or cause another unexpected issue, like tuning or something.
Since the other 2 horns are working, i didn’t want to disturb them to check the seat height. at the same time
Sorry for the small pictures. i am away from home and my camera card. i had to copy the pics from an email.
Thanks CN.
I took one of the other horns apart and came up with .015, so .018 is what i re-cut both to.
I figured it had to have a few thousandths wear on it.
It sounds Great now. The second one i took apart had a dark 1/2’’ spot on the ring seat were it seals also, so i cut it.
It might be in my head, but the horn now sounds in tune, but i also turned the 44 horn around so they are all facing one direction.
Aluminum turn black when it wears. At least in an automatic trans, every time i see black ATF , i know an aluminum part is rubbing on something because of a bearing or thrust washer failure.
The black must come from air wearing away a pitted spot or from heat not being absorbed or something .
maybe a mechanical engineer could answer that.
Anyhow, If you need me to re-cut a seat, let me know. It only takes about 15 minutes. I used a live center and that worked out good. a bit of a squeeze getting the “bit” angle right, but i can do them 100 miles an hour now.
The other issue is the back cover has to be flat. Mine were not. I used a 6" x 48 belt sander for that and finished it off with a flat plate with 220.
I had a friend laughing his oven off after i told him to hang around while i drove by with my ford escort wagon. I had the horn already sitting upright with a full tank of air already in the car, so he had no idea what i was going to do.
I drive by and squeaked my little escort girlie horn and then with earplugs and headphones on, i gave her a 1 second, 3 second shot of air with the horns facing out the side window.
By the time i got around back to the house the guy was in tears.
You know the routine, " What the hell did you get that for"?
Hey, when experiencing life, one must take large mouthfuls, i told him.
Then i through in the fact that i had no idea why i got it, but always wanted one for parades and can always get my money back if i resell it, which, unless i am court ordered to do, Will not happen.
