Broken flex plate?

gpzstar wrote: 8122pbrainard wrote: Bill, A quick high jack question. Would you use a diode or a RC network across a switch contact that's welding itself together? The switch is rated for 50 A with a 25 A inductive 12 V DC load but I've gone though 2 that welded together. I would use a relay rated for the obviously high current you are drawing. Use the switch to activate the relay and let the relay contacts handle the current , or better yet an SSR might be better as they don't have not contacts in the traditional sense. I could ask a colleague but you you'd be able to google a bridge circuit . Biggest question I why are you drawing so much current?

Bill,
The relay did cross my mind but they are typically rated for 30 amps unless I went to a large power relay. With the typical automotive 30 amp, I feel I'd have the same problem with the relay contacts. I have seen and used plenty of RC networks protecting relay contacts on AC but didn't know if the preferred DC protection is a diode or a RC network. You mention "bridge circuit" and I'm assuming you are referring to a full wave bridge used for rectification? That is not an appropriate application for contact protection. I did google and was not able to find a decent answer. Considering your occupation stated in your profile I thought you could comment. I evidently misinterpreted your occupation. Sorry

It was a trick question anyway - either would work depending on the application - which we are not privy to - if y0u don't need to stop the motor fast and its a mechanical switch then a simple diode will do it.

My primary focus is electro/mechanical so I do a bit of both. Wasn't expecting an electrical engineering pop quiz when i signed up. All i wanted to do was merely seek advice on my boat. This is the main reason I typically avoid forums, so many "experts"
See ya....

Aye aye matey !

Could a bad damper be narrowed down with doing a "listening probe" with a long screwdriver?

I feel like we'll never get an answer. Boat will probably be sold as is and even if he gets informed of the problem I doubt it will get posted. We seem to have offended him with all the helpful diagnosing questions that never got answered.

Hollywood wrote: I feel like we'll never get an answer. Boat will probably be sold as is and even if he gets informed of the problem I doubt it will get posted. We seem to have offended him with all the helpful diagnosing questions that never got answered.

Yeah bunch of real helpful D-Bags you got here,,,
Like to see any of them keep up on 2 wheels with me, love to watch as they end up on their head in a corner....
Nope won't bother posting ever again, not worth the aggravation dealing with trolls / keyboard cowboys.

Clearly not a Dale Carnegie graduate. Agreed, sometimes the threads go off on a tangent, but the wizards rarely fail in coming back to a correct solution.

Speaking of tangents, i fail to see any possible correlation between some self-professed motorcycling skills and fixing a old broken boat

Morfoot wrote: .....Don't let the door hit you in your Stern on your way out!

+1