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Old 28-06-2006, 08:29 AM   #1
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Country: United kingdom
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Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

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D.V.A gauge

Anyone know where i might get a D.V.A gauge/meter that could be mounted in the dash of a boat? I.e pref a 52mm gauge?
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Old 28-06-2006, 09:17 AM   #2
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Why on earth would you want a dva gauge in the boat?
Are you going to mount 10 of them? (1 high speed stator, 1 low speed stator, 2 charge coils and 6 ignition coils)
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Old 28-06-2006, 01:06 PM   #3
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Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

Join Date: Jan 2005
Location: West Sussex
Posts: 2,652
Coz whenever my stator goes it only ever seems to be the high speed stator that goes weak and drops the top rpm off! So i thought if i could monitor it and see if its dropping off then i could do summin about it before it goes completely! 200 rpm at w.o.t is about 2-3 mph for me! Makes a big difference over an hour!
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Old 28-06-2006, 01:13 PM   #4
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I thought if the high speed stator goes you lose 2500 rpm upwards?

Anyway, the stator outputs don't really need a proper DVA (more specifically, a DVA in the mercury sense is a peak reading voltmeter, not the same as an AC voltmeter which gives RMS) - the duty cycle is high enough that any AC reading voltmeter will do - or a normal voltage gauge (of the correct range, or a 12V one and potential divider) and bridge rectifier.

The DVA is more important for the outputs from the switch boxes to the coils where the duty cycle is very low.
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Old 28-06-2006, 01:16 PM   #5
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Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

Join Date: Jan 2005
Location: West Sussex
Posts: 2,652
Cool thanks matt!
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Old 28-06-2006, 01:18 PM   #6
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IMVHO, (and I ain't gonna tell you how to do it), If yer concerned about the stator I'd just make it one of the pre-race checks.
Once you've crossed the start line, even if it fails and the gauge tells you, there's sod all you can do about it.
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Old 28-06-2006, 01:28 PM   #7
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Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

Join Date: Jan 2005
Location: West Sussex
Posts: 2,652
True! It doesnt happen very often maybe once a year but was just wondering if there was any way i could see it happening that was all.
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