Best Tiny Tach type

[Fenlander]

Rather envious to see you have three warning lights on your "dashboard" to my one.

[jeffstevens763@g]

Originally Posted by Fenlander

Rather envious to see you have three warning lights on your "dashboard" to my one.

dont be they only frighten you when they come on

[Fenlander]

Just come across a test of our exact tach type... agree with every word she says!

https://www.youtube.com/watch?v=mO2S6r3csCI

[jeffstevens763@g]

Kinda says it all! Kaman should have a look at it the suzimar rib looks nice

[Fenlander]

Well the small tach has done its job in prop sizing plus just one more trip and it's measured the running in revs/hours.

Despite it being "waterproof" I noticed a hint of mist on the inside of the screen last trip out so its been dried and will now live a more sheltered life under the hood.

[jeffstevens763@g]

Mine was the same misted up but cleared in use

[Fenlander]

Annoyingly after just one run out under the hood as in post #25 above the backplate of this tach broke. It was OK under the hood but exposed to water it would be full up and trashed by now. So I'll re-seal it and make up a bracket that will fully support the whole back.

[Max...]

I bought one of the cheap HK ones (about £6? delivered) and before using it for the first time this weekend sealed it in a heat sealed poly bag with gaffer tape around the lead to keep all water out. Survived OK but these things don't seem to read right? The set up menu S1/2/3 etc does not seem to have a 2 cylinder, 2 stroke option and although it reads OK at
idle etc at WOT it seems to read half the revs...no way we were doing 17kts at 2750rpm....I wish!

[Max...]

Water-proofy...

[Fenlander]

Waterproof good... odd readings not. I thought it was impossible for the readings to be other than linear... out at WOT = out at idle and vice versa surely??

[Max...]

I don't know - cheap Chinese junk?!

As I say it does not seem to have a 2 stroke, 2 cylinder setting, only one that makes any sense is 'S1'. Idle was correct, should be set in forward gear - I set it slightly higher at around 850 and I'd definitely know if this was out by 50%.

To be fair we were hanging on for grim death with everything bouncing about so not the best conditions to test but at WOT it seemed to be reading 50%.

Will need to investigate more in calmer waters...

[ShinyShoe]

Have you tried wrapping the sensor wire round a few more turns

[Max...]

Yes, but only when I got back home! Too bumpy out there to mess abut but did wonder if it might be an issue, got about 7 turns on there now.

[Fenlander]

After the case/mount splitting as mentioned in post #27 I've made up a backing plate (from a bit cut off a nylon chopping board) bolted to the unit to make it more rigid and re-sealed the case. We'll see how long this mod lasts...

[jeffstevens763@g]

Originally Posted by Fenlander

After the case/mount splitting as mentioned in post #27 I've made up a backing plate (from a bit cut off a nylon chopping board) bolted to the unit to make it more rigid and re-sealed the case. We'll see how long this mod lasts...

So are you just using it as a hour meter now David with it under the hood looks neat by the way

[Fenlander]

Jeff I have the prop sorted as you know so I've really no need to see the revs unless I have some major change to sort out. So yes just an hour meter now. As a matter of interest in 10hrs it over read 20mins compared to the Suzuki dealer diagnostic.

[jeffstevens763@g]

See what your saying and best place under the hood , good to know they are just a guide on hours but I will service every year so won't reach the hours to be critical but will help on re- sale if I do sell

Cheers

[Max...]

Well my new one has given up after 1.5 trips, Second one of these Ive bought in two years, total cr@p.

[jeffstevens763@g]

suppose you get what you pay for when mine goes i will fit a proper job.

[Limecc]

Great work guys, has saved me much time and effort the thread was a thoroughly interesting read. I pick mine up tomorrow in person because I'm only a few minutes drive from the EBay seller Fenlander used.