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Old 10 March 2008, 11:00   #11
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Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
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Originally Posted by 9D280 View Post
And if it comes to that, just how accurate are the analouge tachos - you'll probably be within a similar percentage of "same" as with a "matched" pair.
Would probably synchronise the engines by ear and just use the tachos as a guide.
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Old 11 March 2008, 05:54   #12
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Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
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Originally Posted by Searider View Post
Would probably synchronise the engines by ear and just use the tachos as a guide.
I rest my case!
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Old 31 October 2008, 15:19   #13
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Country: France
Town: Cannes
Boat name: midkat 550
Make: apoge
Length: 5m +
Engine: 2x50 Tohatsu
Join Date: Jan 2008
Posts: 126
using one 45 and one 50 = no problem, go !

As these motor are not counter-rotating, when you go straight line, the propellers are not pushing straight, but with an angle - the boat runs like a crab.
All single-motor boats go "crab", but twin-engine more, and one motor is pushing more than the other to counter-balance rhis angled-walk.

Possibly - probably - your boat would run better with 50 on starboard and 45 on port, as the props torque tends to push toward starboard - if you want to know, swap.
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