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The Norfolk Broads Forum / Broads Boat Owners Q & A / Can you ID the maker of this rev counter?
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Posted By Discussion Topic: Can you ID the maker of this rev counter?

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Dilligaf
Oct-08-2018 @ 7:09 AM                           Permalink
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Does it realy matter who made the original if it needs replacing, as long as the hole size is the same and it matches your other gauges go for a VDO, most will take an alternator feed ok and allow for some adjustment.

Dave.
Formerly 'LeoMagill'

Paladine
Oct-08-2018 @ 8:20 AM                           Permalink
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ruby, apparently Mr Truman liked to try out different things. My Bounty has a GM 1.6D engine. I haven't come across another GM-engined boat on the Broads yet. I know of another ex-Truman Bounty 30, with a registration number just one up from mine, that has got a Mercedes OM636 engine.

Dilligaf, I agree. If the tachometer is faulty it will be replaced, probably with a VDO. But my curiosity was aroused when taking a close look to identify mine, with a view to possible replacement.

The tacho may not be faulty. It might be the alternator or wiring. When motoring along at 1,100 revs, the needle just dropped to about 250 rpm indication. No change in engine or boat speed. Now it won't go beyond 300 rpm, even when revving the engine in neutral. The needle doesn't bounce, and returns to zero when the engine is turned off. Once the cause of the fault is established, the fate of the tacho will be decided.

However, having something of an enquiring mind, I really would like to find the solution this little puzzle.

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

Stingers
Oct-08-2018 @ 8:49 AM                           Permalink
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Pally: I occasionally get a similar problem with my tacho (albeit on a GM petrol engine). I note that you have a blanking plug labelled "range" and would suggest you take this out and look for a small screwdriver-operated rotary switch underneath. With mine the contacts become tarnished over time causing a bad connection. Note the position of the switch and then rotate it a few times to clean the contacts, returning it to its original position. If the contacts are at all visible, squirting some Servisol, or other similar switch cleaner, into the area will also help to clean the contacts.

Andy

Paladine
Oct-08-2018 @ 9:00 AM                           Permalink
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Thank you, Stingers. That's something else to put on the list of things to check  Smile

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

Paladine
Oct-08-2018 @ 10:31 AM                           Permalink
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"I suspect that Brian Ward could tell you in the blink of an eye"

Nope, drawn a blank there.

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

Karen&Mike
Oct-11-2018 @ 11:16 AM                           Permalink
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Possibly an utterly useless contribution from me...

...I wondered if it could it be a motorcycle rev counter ? Kawasaki H2 and some old Ducati logos have that look of a single wheel. But then I thought rpm x 100 is not right for a motorcycle? And as I've only ever been a pillion passenger what the hell do I know !   Blush  

But I've posted anyway and you can all have a giggle  Playful  

Karen

"Wind up the elastic band Karen - we're setting off!!"

ruby
Oct-11-2018 @ 3:49 PM                           Permalink
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Not stupid at all Karen. IT is a very unusual  instrument, dare. I  Say unique in only measuring to 3k revs.

Frankly could come from  anything.

Grahwm

Paladine
Oct-11-2018 @ 4:11 PM                           Permalink
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K&M, all suggestions are welcome. It obviously a very rare and valuable item.  Smile

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

annville
Oct-13-2018 @ 9:27 AM                           Permalink
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Hi Paladin The rev counter runs of of the alternator people use crimp connectors they get a bad connection due to corrosion especially on boats, clean or remake the connector first dipping bare wire in vaseline or better still soldier it on at both ends, the meter runs on a very low/small currant and is easily compromised. if you put a meter on alternator term then end of wire at meter this will confirm good or duff connections.AS regards make just google vintage car parts. John

Paladine
Oct-13-2018 @ 10:59 AM                           Permalink
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Thank you, annville. The connections will all be checked first.

I've trawled through thousands of automotive logos. Still trying!


"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

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