Checking RPM on a small outboard

[Blackened]

G'day

I'm doing a few trial and error mofications to get the best performance from my little 9.9 merc. It's a 2000 model 2 banger.

How do I set up a tacho or something that will tell me the engine revs at WOT to aid in propellor selection?

Dave

[Noelm]

there is a few different types of mechanical type tachos that will give you a good indication of revs (not as good as a "proper" one) not too sure where you can buy one from though.

[BM]

Tacho connects to the stator output (yellow wires from under the flywheel)

[yamp]

have a look at small digital tacho on ebay shop (christie engineering) i think.I used one on my honda works really well and its is an hourmeter when engine is not running hope this helps

[Blackened]

G'day

I'll have a look into it.

Thanks very much guys

Dave

[FNQCairns]

Yeah an induction type tacho is your best bet like the one mentioned above, some engines fire twice on the same piston stroke which can be a pain with one of these but I would guess your little engine wouldn't. They connect to the first sparkplug wire you find.

cheers fnq

[Blackened]

G'day

I did a search on ebay and could not find christies.

Can anyone advise me on where to buy or borrow a suitable tacho?

Dave

[BM]

Should be able to get an arfter market jobby for say $100 from BLA or any marine dealer with an acessory shop.

www.bla.com.au

Cheers

[BM]

$160 on BLA. Or try Suprcheap, Bursons etc etc Just make sure its a marine unit with settable PULSES on the back.

Cheers

[snelly1971]

I fitted one called a tiny tac...The wire was just curled around one of the plug leads and it was battery powered...about 50 bucks if memory is correct...worked a treat...cheers Mick

[Blackened]

G'day

Thanks nick

Hye mick... any ideas where you got yout tiny tach from?

Dave

[FNQCairns]

Here is the tiny tach, they are good, can buy from the US also on these, I coudln't find the christies one on ebay this time around and I have misplaced my favourite to their business website, from memory they were the right price.

http://cgi.ebay.com.au/TINY-TACH-DIG...QQcmdZViewItem

cheers fnq

[snelly1971]

My mate owns a Stihl chainsaw shop here in tassie...he supplied it...try your local Stihl dealer...

Cheers Mick

[yamp]

Dave heres the home page of the mob I got my sendac tacho off http://www.christieengineering.com.au/

[snelly1971]

The link that FNQ is the same as the one i fitted..great little units..