RA50 Leslie Speaker Speed Pickup Coil Issue

[rockandroller]

I'm after sourcing a speed coil replacement or if anyone could tell me the value then I could get a friend to wind a new one.

I've emailed Yamaha and had no reply and I can't find a spec to wind the coil to. With it not being a standard size it's pretty frustrating. Without this I can't change the speed of the leslie!

I've attached a couple of pictures to show what I'm after. Any help would be massively appreciated!

[parametric]

Hi rockandroller, and welcome to the Forums . . . .

It's always best to PHONE Yamaha - we have found . . .

<Saul> will probably know which address is best for this - possibly the Milton Keynes HQ . . .

It's an old piece of kit, but that information should be written down somewhere,

even if they no longer have a replacement . .

ATB

parametric

[Buzzard]

Welcome to the forum.

Here's a service manual:

RA50YAMAHAServiceManual-EN.pdf

Best Regards
Peter

[rockandroller]

Hey!

Yeah I've look at the manual for the 50, 70R, 100, 200 and the BK organs which share the same rotary speaker unit and none of them have any info about the spec of the speed coil on them!

Definitely will give them a call tomorrow though. Hopefully they'll be able to shed some light on this