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Old 16 May 2016, 10:12   #11
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Why did you name yours Black pig?

I was brought up on the Captain Pugwash books😊


Sh1t happens
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Old 16 May 2016, 10:15   #12
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It's a Great Boat,and there's always "fettling" to be done with any New Rig...especially if you're a Perfectionist! the engine always looked too low to me Dave as you know...who mounted/drilled the holes?



One notch may do it,but lifting two would be where I'd start...regardless there's always a way around these things Mate so don't stress it too much

It usually takes me a couple of years to get them "just so"
The engine was mounted by Ribcraft.


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Old 16 May 2016, 16:14   #13
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[QUOTE=Pikey Dave;716135]I was brought up on the Captain Pugwash books😊


Me too!!

I had a cat named Pugwash

I won't allow a first mate though
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Old 16 May 2016, 16:45   #14
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Quote:
Originally Posted by Pikey Dave View Post
The engine was mounted by Ribcraft.
I don't know if this is a common manufacturer thing; I've got a feeling mine is mounted too low. It produces a lot of spray round he transom and I feel like I'm having to run with it trimmed a long way in to keep the nose down. I had assumed that Redbay were trading speed and economy for grip, with one eye on their reputation as a heavy weather boat, and that they knew knew best.

I'm nervous about fiddling with it and messing it up, but the idea that Ribcraft may have mounted an engine 'too low' has got me thinking again.

I'll watch for your 'how to' with interest.

(P.S. for what it's worth BP looked great at the weekend!)
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Old 17 May 2016, 03:53   #15
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my RC 6.8 the engine was mounted too low, raised up 1 hole and runs well now.

some engines are easier to move than others as some have a couple of bolts on elongated slots, unfortunately my zuke doesn't have that option so it was a complete unbolt job with a hoist.
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Old 17 May 2016, 04:14   #16
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I've got a feeling mine is mounted too low. It produces a lot of spray round he transom and I feel like I'm having to run with it trimmed a long way in to keep the nose down.
donegaldan moved his 140 up a coupla notches to see what would happen. Blowout and no extra speed was the answer. Down a notch and no blowout and no extra speed. Back where it was was where it went ;-)

Ultimately, the loading and conditions you generally encounter are going to determine where you want the engine height. It's not rocket science to raise it a notch for the craic.
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Old 17 May 2016, 06:02   #17
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P
Quote:
Originally Posted by dubrus View Post
my RC 6.8 the engine was mounted too low, raised up 1 hole and runs well now.

some engines are easier to move than others as some have a couple of bolts on elongated slots, unfortunately my zuke doesn't have that option so it was a complete unbolt job with a hoist.
I rigged my own Boat...but didn't hang the engine,leaveing it to the "Pro" who supplied it..and subsequently had to raise it by two...which transformed Performance and Handling!
I'm sure Pikey will have the same outcome.
Less to do with type make of engine alone,than Hull/Engine interaction.

Raising Most Large engines requires a lift...(Certainly better for the nerves!) but definatly isn't a major undertaking!..although plenty of "Stag" through the engine holes in the Transum and useing the correct Bolts and Washers IS essential!!
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Old 17 May 2016, 06:03   #18
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Double post
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Old 17 May 2016, 08:30   #19
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Compare to Pikey Dave I'm completely amateur about RIBs and "RIBbing"
And mine boat is class lower than RIBCRAFT

This year I lifted engine 1 hole up
Before (look at 30 sec of below mentioned movie - anti-vent plate looks like under water or it is mirage by wake surrounding plate)



After lifted up engine plate is more visible, speed was higher but spray/wake was much higher from tubes:



Finally I have returned to lower position.
Bow lift up much easier and faster when start to plane
I can make tighter bend.

Let's buy ATLAS 4" equipment. You can adjust high to optimum based on current load and Sea condidions
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Old 17 May 2016, 09:23   #20
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I would love to try a 4 blade and lower my engine again..... Pity the price for that test to buy a prop!
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