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DeepBlue

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Posts: 147
Reply with quote  #1 
Hi there, i have an 50hp , when on the plane at 40km/h my steering to the left is stiff , when i trim the bow up a little bitt steering is perfect, do i need to set the trim tab? And if so to which direction do u think?

Regards
GEB

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Posts: 2,172
Reply with quote  #2 
Hi DB,
Trim tab adjustment, in your Operators Guide, see attached.
If you don’t have an Operators Guide go to http://www.etecownersgroup.com/post/download-evinrude-predelivery-and-installation-guide-and-operators-guide-8802043?pid=1297203144 and follow the directions to download as a PDF
Cheers
GEB

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Stacer 389 Territory Striker
Model No.E25DTSLAFC
Serial No. 5503333
Mid North Coast
New South Wales
Australia 
The learner will not shear the rams.

muskiemouth

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Posts: 705
Reply with quote  #3 
Quote:
Originally Posted by DeepBlue
Hi there, i have an 50hp , when on the plane at 40km/h my steering to the left is stiff , when i trim the bow up a little bitt steering is perfect, do i need to set the trim tab? And if so to which direction do u think?

Regards


Could be trim tab, although I have had this issue when the engine was mounted to low. Raising it eliminated the issue.

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2015 Campion Chase 580 BR, 2016 G2 Etec 225 HO (E225LHAG)
DeepBlue

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Posts: 147
Reply with quote  #4 
Quote:
Originally Posted by muskiemouth


Could be trim tab, although I have had this issue when the engine was mounted to low. Raising it eliminated the issue.


I have 2 motors , and the height is the same, will try and set trim tab on both engines. What do u think.?
muskiemouth

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Reply with quote  #5 
Quote:
Originally Posted by DeepBlue


I have 2 motors , and the height is the same, will try and set trim tab on both engines. What do u think.?


You have two motors? Does one have a countering rotating prop?

I'm just saying that heavy steering can be related to trim tabs and an engine(s) mounted too low.

If in fact, your engine(s) are too low, you are also sacrificing performance and fuel economy. The more you turn the tabs the more drag you will add, btw.

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2015 Campion Chase 580 BR, 2016 G2 Etec 225 HO (E225LHAG)
GEB

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Posts: 2,172
Reply with quote  #6 
Quote:
Originally Posted by DeepBlue


I have 2 motors , and the height is the same, will try and set trim tab on both engines. What do u think.?


Hi DB,
Do yourself a favour and download the Evinrude Pre Delivery and Installation Guide from this link
http://www.etecownersgroup.com/post/download-evinrude-predelivery-and-installation-guide-and-operators-guide-8802043?pid=1297203144
With twin engine installations there are many things, as Muskimouth pointed out, that affect the steering
The correct installation of twin engines is well explained in the Rigging Guide. Have a read of it, get the accurate / correct info and eliminate the “guesswork”. Refer “info sample” from Rigging Guide attached.
Cheers
GEB

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__________________
Stacer 389 Territory Striker
Model No.E25DTSLAFC
Serial No. 5503333
Mid North Coast
New South Wales
Australia 
The learner will not shear the rams.

Huey

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Posts: 13,838
Reply with quote  #7 
When trimmed correctly, that is not fully down, you say the steering is perfect, then leave it alone. You would not want to drive everywhere when the engine fully trimmed down. They will not be C/R engines in the 50HP class either.
DeepBlue

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Posts: 147
Reply with quote  #8 
Quote:
Originally Posted by Huey
When trimmed correctly, that is not fully down, you say the steering is perfect, then leave it alone. You would not want to drive everywhere when the engine fully trimmed down. They will not be C/R engines in the 50HP class either.


When i trim it down all the way it is stiff, when i trim it up till the first mark on the trim guage it is perfect, but then the bow is slightly out of water, the more i trim up , the steering is loose more, i will check the height etc.
DeepBlue

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Posts: 147
Reply with quote  #9 
Quote:
Originally Posted by DeepBlue


When i trim it down all the way it is stiff, when i trim it up till the first mark on the trim guage it is perfect, but then the bow is slightly out of water, the more i trim up , the steering is loose more, i will check the height etc.


But also need the bow in the water otherwise it is smashing on the water .
Huey

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Posts: 13,838
Reply with quote  #10 
Then simply adjust the trim tab to how you like to drive, but never been in a boat that, in flatish water, does not like to be trimmed out. If you can not see the AV plate when trimmed correctly then fix that before mucking with the trim tab and also knowing what prop you have and WOT RPM will help-you may need a stern lifting prop.
DeepBlue

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Posts: 147
Reply with quote  #11 
Quote:
Originally Posted by Huey
Then simply adjust the trim tab to how you like to drive, but never been in a boat that, in flatish water, does not like to be trimmed out. If you can not see the AV plate when trimmed correctly then fix that before mucking with the trim tab and also knowing what prop you have and WOT RPM will help-you may need a stern lifting prop.


Will check the av plate
2-3 seconds to plane, boat planes on 4000 rpm, at 38km/h, full throttle i get at 5600rpm 55km/h
But wil check more things.
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