Honda 90hp 4 stroke

[swansea_diver]

Hi,<br />I hope you can help me, my dive club has a Honda 90 hp 4 stroke. The problem we are having is when we are towing our <br />magnetometer we are having interference from the charging circuit. We have had the magnetometer serviced and the <br />manufacturer suggested we have a switch fitted before the rectifier in the charging circuit. I asked our local service centre when <br />the engine was going in for a service but the owner seemed reluctant to do this and said he would contact Honda technical but <br />didn't. If it is possible could u send the drawing or tell me exactly where the switch should go. By isolating the output of the charging circuit from the rectifier etc i can see no reason for this to cause any damage.<br />Your help on the matter would be greatly appreciated.<br /><br />Anthony Matthews<br />Port Talbot Sub-Aqua Club <br />Swansea, South Wales, UKwnn

 

[12Footer]

Re: Honda 90hp 4 stroke

You could do that, but I would advise against it also. If you switch it off and forget about it, your magno-gizmomometer

<br />thingy (allong with your other electrics and electronics) will drain your battery flat.<br />Bad buisness when you are out of sight of land

<br /><br />Add to this, your interferance could be being generated from another scource,such as CD system,plugs,leaky plug wires,ect.<br /><br />Before installing a toggle switch, physicly unplug the regulator at the connector, and see if it clears-up.<br />If it does,you are right on the problem,and a good TV repair shop will help you,and do it professionally....That is, if you can find a TV repair shop these days.They are kinda going the way of the dinosaurs.

 

[JB]

Re: Honda 90hp 4 stroke

Ahoy, divers. I agree with 12Footer; a switch would be a bad idea. Not only would it place your electrical system at risk when open, it is quite difficult to switch that much current reliably except with a high current relay.<br /><br />Your problem sounds lkke one quite familiar to radio engineers and hobbyists. . .RFI (radio frequency interference). It is, as 12Footer suggests, as likely to originate in your ignition system as the charging system. Take your symptoms and situation to a radio hobbyist's supply shop. They can probably supply you with a filter or "wave trap" and instructions on how to install it.<br /><br />Good luck.<br />JB

 

[swansea_diver]

Re: Honda 90hp 4 stroke

Thanks all for your replys