Starter Solenoid Question

[charlesmc]

Building an RV-10. I purchased a starter solenoid from B&C (S702-1) only to find that the mounting tabs don't match the stock RV-10 location/nut plates.

I was going to purchase the stock starter solenoid from Van's (https://store.vansaircraft.com/starter-solenoid-es-24021.html).

Do I need the starter relay protection diode (ES DIODE STARTER) or diode, starter relay (ES-00165) as well?

The Nuckoll's diagram I'm looking at (z-14) does not show an external diode on the starter contactor (but the contactor they show is S702-1 and it looks to have an internal diode).

Thanks!

-Charles

 

[Carl Froehlich]

If you use the standard Van’s start solenoid, you need the ES Diode.

Carl

 

[charlesmc]

Thanks! There are two ES diode part numbers.

ES DIODE STARTER and ES-00165 and they are different parts

 

[bjdecker]

Thanks! There are two ES diode part numbers.

ES DIODE STARTER and ES-00165 and they are different parts

Correct - one is for a Master Relay, the other is for the 24021 Starter Relay. The stud sizes are different between the two, ergo the ring terminals are different sizes.

 

[charlesmc]

Perfect thanks!

 

[kms001]

The diode is a 1N5402 it's available from any component store digikey etc if you can crimp or solder a couple of ring terminals. Probably less than a dollar