Your ignition switch and positive coil connection should be connected anyway. They are connected back to the alternator's regulator feed via the diode. Check your wiring bit-by-bit against the diagram. I would just change the diode for a small 12v panel bulb and holder. Bulb should light up when the...

Blimey - sound like this one was wired by an Iraqie pick-pocket! The coil's positive side should be fed from the ignition switch - giving a full 12v - no ballast resistor. Normally you would have an ignition warning lamp where your diode is (so THAT is what it's doing!) Creating a similar drop in vo...

Fire the engine up - Don't panic about the mains level AC coming from the alternator - you're already seeing about 12 volts. You should have two connections to the Alternator if it has an internal regulator - one heavy charge feed to the battery and a lighter one which is the field sensing line - th...

That looks more like an IN4000 series diode to me and is most likely the cause of the drop in voltage to 11.2 volts. Depending on what's coming out of the Alternator at that point, it will be providing half wave rectification of the current and/or blocking reverse current. If there's a regulator in ...

75Hp @ 4500 rpm with a 2:1 gearbox. Displacement assumed 4000lb. (just shy of 1.8 tons all up) IF the engine is producing 75HP AND the gearbox isn't slipping: THEN PROP_SHOULD_EQUAL: 16" Dia by 10" pitch giving you about 20 knots. (All approx, depending on the weight) If everything was connected OK,...

What prop diameter and pitch are you running at the moment? and what engine revs are you reaching? Compared with what you should be reaching. Prop calculators nearly always over estimate the slip factor for these early hulls. Producing a prop with too much pitch. Engine struggles to reach its full r...

Likewise - thanks David.
The weather Gods were certainly appeased this year, I don't know who was dancing around the entrails in their drawers ...

First time out for the Skua skimmer - some work to do, but it looks like we got the engineering right - just need "More Power, Igor!"

Cheers,
S

Thanks for a great, but cold day out. Swift Hydro Spray.jpg The Boggis Swift (and loud) hydro in action - somewhere in that spray CH Hydro.jpg The Harris quiet Hydro - the right way up. Tremlett 17 Ivy Lake - 1.jpg First time out for the other Boggis' Tremlett 17. (That knotty pine deck took a lot o...

For Sale: Clarke CW1D Parts Washer.

http://www.machinemart.co.uk/shop/produ ... rts-washer

This thing is big enough to soak most bits of a 4 cylinder motor.

£60 o.n.o. Buyer to collect (North Hampshire)

Email scott.pett@gmail.com
Phone: 07768 994306

For Sale: Clarke Engine Stand CES 500A http://www.machinemart.co.uk/shop/product/details/ces-500a-engine-stand Takes a Ford 4 Cylinder motor OK, (and probably larger.) I rebuilt my 1703cc Simmonds motor on this and its sat in the garage ever since. £35 o.n.o. Buyer collects (North Hampshire) Email: ...