Tuning Out of the Water

[raylab]

Is there a way to apply a load to these 2 strokes w/o using a barrell of water? I find that if I run in a barrell and want to run the engine at load for a while, it tends to empty the barrell all over me and the area I am working in. Muffs are good for low speed tuning, but can't throttle up and check full load performance...

Heard of a 'Load Wheel' but not sure how that works...

BTW: I have a 88 12hp Evinrude...

Thx,
Ray L.

 

[ezeke]

Re: Tuning Out of the Water

Easiest to tie the boat to a dock or keep it tied on the trailer, backed in enough to run.

The test props will still kick a lot of water around in a barrel.

 

[raylab]

Re: Tuning Out of the Water

Tuning while tethered makes sense. I was hoping to find a method I could use at the house as I am a few miles from the nearest lake...

Thanks!
Ray L.

 

[KYHunter2]

Re: Tuning Out of the Water

This may seem obvious.

I've backed into a area pond , when no other option was at hand.

The country around my area, is full of small farm ponds .

They work great as long as your carefull , about sucking up weeds , etc.

KYHunter

 

[tashasdaddy]

Re: Tuning Out of the Water

you can even set the idle properly on muffs.

 

[raylab]

Re: Tuning Out of the Water

I thought I should be able to do the idle on muffs, but the book specifically states that you should not do that tuning tied to a dock on on the trailer: you have to be 'traveling' whild at 50% or 100% load... Not sure I buy into that but was chedking the options...

Ray L.

 

[tashasdaddy]

Re: Tuning Out of the Water

what you can do on muffs is get it to idle higher than it is suppose to so it will start in the water. you cannot set the idle until in the water, because the is no back pressure on the exhaust, when doing it on muffs. there are a lot of post idles' fine on muffs, won't start in water.' this is why, send me an email and i will send you Joe Reeves instructions for setting the carbs. it's in the engine faq, but thats not working, tell me you need joe's settings. they are eazy to understand. did it on my enigne and made a big difference.

tashasdaddy@comcast.net

 

[tashasdaddy]

Re: Tuning Out of the Water

the publishers are covering there a$$, by saying that in case of an accident. what i do is leave the boat strapped to the trailer, and back in just enough to do run the engine, that way the boat is not trying to float around.

 

[Mark42]

Re: Tuning Out of the Water

I thought I should be able to do the idle on muffs, but the book specifically states that you should not do that tuning tied to a dock on on the trailer: you have to be 'traveling' whild at 50% or 100% load... Not sure I buy into that but was chedking the options...

Ray L.

Having just been through setting idle and timing on my 40hp twin, I have to admit that there is no substitue for actually being on the water when making fine adjustments.

That being said, I was able to get idle set well using the barrel method, and timing using the Joe Reeves method.

Bottom line is the motor performes differently when the prop is actually in a big body of water compared to being in the air on muffs or a barrel of churning water.

So use the barrel to get close, then make the fine adjustments out on the water. The barrel will save you time.

My motor ran smoother under load on the water than it did in the barrel.

 

[raylab]

Re: Tuning Out of the Water

All your comments make good sense. Think I wil do as reccomended here: 1) sent TashasDaddy an emain for the Reeves methos, 2) will start on muff to get close, 3) will stick it in a barrell to get closer, 4) then will fine tune in the lake...

Just to keep all of the readers and responders upto date, I will keep posting the results here, even if this is mundate for all you pros's! (LOL!, Grin, Chuckle, Wink...)

Thanx,
Ray L.
Mistakes r Fun, I do em all the time!

 

[raylab]

Re: Tuning Out of the Water

Don't take it wrong folks, that is not the Emoticon I wanted, then I couldn't delete it!!!
Ray L.
:=

 

[KYHunter2]

Re: Tuning Out of the Water

If you follow Joe's method , you will get very close.

I've also , timed several with his method .

And they are usually very close, or right on.

When I verified the timing at the lake.

KYhunter

 

[Scaaty]

Re: Tuning Out of the Water

I have a 88 12hp Evinrude


A 12hp? Never heard of a 12hp Rude?

 

[Scaaty]

Re: Tuning Out of the Water

Don't take it wrong folks, that is not the Emoticon I wanted, then I couldn't delete it!!!
Ray L.
:=

Its because you did too many questions marks, or periods.
I will do three question marks here, and watch what come up. Ready? ???

 

[KYHunter2]

Re: Tuning Out of the Water

Scaaty,

When we first started with the new forum.

Every post I had a question in , had those little suckers.

I finally figured out why. LOL

KYHunter

 

[raylab]

Re: Tuning Out of the Water

When I said 12 hp, I really meant 15 hp. sorry bout that!

I did the Sync n Link adjustments and Idle Speed adjustments from the manual, then the Reeves Carb Adjustments last night. Even tho it may have been a little redundant, I did all three procedures.

When I started, the Cam Follower Roller was centered on the timing mark very well. It did take a couple of turns to get the throttle plate sync'd up, so that was probably my stalling problem after runnin WOT on load for a while in the lake. I think the throttle was shutting down too far when I returned to idle, hence the stall.

One question I have: (actually I have dozens but we'll go with the one for now ) Step 5 in the Manuals Idle Speed adjustment procedure is to set the 'idle speed adjustment' to appr. 650 RPM. Is this the set screw on the Cam Follower? I didn't actually have to adjust it because I liked the idle speed the way it was...

One other question: What service tach do y'all use? My calibrated ear drum is getting a little waxed up and I'd like to actually verify the speed settings I have been using. Be good if I could locate a tach that would work for 1 cylinder and two cylinder engines. I have a Case Ingersoll tractor with a Briggs & Stratton 2 cylinder (that fires both plugs in tandem).

Thanks in advance, again and I will post an update when I can get this back into the lake...

Ray L.

 

[raylab]

Re: Tuning Out of the Water

Ok. Success. Hero worship from the kids. I ran it on the lake for well over an hour and only stalled once. Rat at WOT quite a bit (kids really loved that!).

Stalled after setting at idle for 5 or 10 minutes while the kids figured out how to use those ugly oars (LOL). The idle setting on the twist grip does nothing so I have to make sure I don;t return the throttle all the way to the stop or it stalls after a short while (actually after setting on idle for a while then turning throttle to increase RPMs is when it stalls, typical, right?)

So, now that you good folks have helped me succeed, I will pull the motor and clean the boat, then fix up the trailer lights and wiring.

Thanks again, job well done!
Ray L.

 

[freddyray21]

Re: Tuning Out of the Water

can't believe anyone on this forum would suggest backing the trailer in far enough to get motor in the water to tune it without the caviate of telling them to do it on a weekday when no one is at the ramp. Every year we get one of two guys tuning their boats on the ramp on a busy day. Round here the rangers will run you off if you do that let alone the other boaters waiting to use the ramps

 

[raylab]

Re: Tuning Out of the Water

That's just courtesy. I know there are a lotta morons out there but I try not to be one of them. Even for my tuning runs around the lake I waited till a weekday that was not busy and made sure I stayed well away from the kayaks, fisher-people and canoes. I hate getting waked when in a canoe and/or fishing and won't intentionally do it to others. I guess they assumed I would be smart enuff to not sit on the ramp on a busy day. If I did, I would deserve the wrath of the other boaters.

Thx,
Ray L.

 

[tashasdaddy]

Re: Tuning Out of the Water

Freddyray21. i told him to do it. if you are STUPID enough to do it on a busy day, you deserve what you get. i have encountered it once, politely explained the situation offer my help on another day and told him to get F--- out of the way. he did call me , and we had him fixed in about 20 minutes.