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Old 30-05-2006, 01:57 PM   #1
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Trim tabs - info wanted

I am currently looking at fitting trim tabs to my Ring 18 and was wondering if anyone can help me out.
Have had a look through the INet and the ones I coming back to are those produced by Bennet Marine. They were most helpful but steered me away from the 'standard' single ram tabs to their sports tabs, which are stronger built and equipt with 2 rams each - of course the increase in price reflects this!!
The biggest issue being that the boat is doing in excess of 60MPH and their standard tabs are not strong enough at this speed.
What have you lads got fitted to your boats and do you have any recommendations about other suppliers?
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Old 30-05-2006, 02:18 PM   #2
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Depends what you are going to use the boat for. I have never been a great fan of lower end "sports" tabs if you push hard most will fail at some point. That said in normal use I'm sure the twin ram will be fine.
I quite like the Eddie marine ones but there are a few others out there, they look the part and are better suited to the higher end of the performance envlope.
http://www.eddiemarine.com/cart/deta...&CategoryID=92
How much over 60 are you going to go & in what conditions is the question you have to ask ya-self?
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Old 30-05-2006, 02:51 PM   #3
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With the current prop I am maxing out around 65MPH although when I bought the boat the original owner said he had it up around 75 - never achived this myself so am taking it with a pinch of salt.
Boat is used purely for pleasure - ie, not racing.
Got Eddies catalogue a couple of months ago but thought his tabs looked for to "beefy" for my usage but then I am probably wrong - thats why I posted here in the first place!!
Cheers for your reply.
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Old 30-05-2006, 03:10 PM   #4
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Rekon twin ram tabs would be fine then for pleasure use at those speeds.
Save ya self £££££ as well
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Old 30-05-2006, 05:05 PM   #5
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Now I still have to persuade my better half to open the bank account, so maybe it will be a job for this winter!!
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Old 30-05-2006, 05:56 PM   #6
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Nah just steal the wonga out of her purse
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Old 30-05-2006, 07:52 PM   #7
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There's a lot to do at "Big" speeds.
The question is ,,,,, do I need to do more?
I've got them mate & believe me ,,,, "there's a lot to do".

Best bet, do NOT scare the family.
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Old 30-05-2006, 08:21 PM   #8
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Good advice - the "better half" is not a fan of the high speed runs but the kids love it!!
Do you find the tabs make a great deal of difference? My Missus is only a short arse so if she takes me ski-ing she has some difficulty seeing over the bow until it comes on the plane. According to the Bennet web site the tabs should allow the boat to come onto the plane faster - do you find this is the case?
Was looking at fitting a bow tank initially but was recommended that the tabs would make more of a instant difference and was obviously easier to fit.
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Old 30-05-2006, 11:35 PM   #9
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Quote:
Originally posted by Ring Owner
Good advice - the "better half" is not a fan of the high speed runs but the kids love it!!
Do you find the tabs make a great deal of difference? My Missus is only a short arse so if she takes me ski-ing. According to the Bennet web site the tabs should allow the boat to come onto the plane faster - do you find this is the case?
Yes will get you onto the plane quicker as you will be planing at slower speeds. can also balance the boat in rougher conditions
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Old 31-05-2006, 10:41 AM   #10
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Warning:- DO NOT use the Bennett tabs at the sport of speeds you are talking about. Bennett tabs do not have a proper hinge mechanism. They rely on a folded plate type of idea and this is prone to failure, causing the plate to become detached, which then digs in and causes a violent and dangerous hook. The Bennett pumps and rams are fine though, so the best thing to do is use these parts of the kit and get yourself some tabs with a pinned hinge fabricated by someone who knows what they are doing.
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Old 31-05-2006, 07:37 PM   #11
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Quote:
Originally posted by Budski
Warning:- DO NOT use the Bennett tabs at the sport of speeds you are talking about. Bennett tabs do not have a proper hinge mechanism. They rely on a folded plate type of idea and this is prone to failure, causing the plate to become detached, which then digs in and causes a violent and dangerous hook. The Bennett pumps and rams are fine though, so the best thing to do is use these parts of the kit and get yourself some tabs with a pinned hinge fabricated by someone who knows what they are doing.
Thanks for the advice - do you know if this applies to their "sports tabs" as well as I was told these were of heavier construction than the normal type. Again, this is reflected in the twin rams, thicker S/S plates etc.
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Old 31-05-2006, 07:52 PM   #12
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Quote:
Originally posted by Wayne Kerr
There's a lot to do at "Big" speeds.
The question is ,,,,, do I need to do more?
I've got them mate & believe me ,,,, "there's a lot to do".

Best bet, do NOT scare the family.
Thanks for that Mate - what type of tabs do you have fitted?
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Old 31-05-2006, 09:15 PM   #13
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Dunno what type they are, they came with the boat.
They are 310 wide x 225 long with a single ram. If I give it a 'large' look, I'll find the make.
But to be honest mate I have only used them on a few occations. I was advised that Tabs can be dangerous if you don't know the effects they have!
If the wind is heeling the boat down to one side, tab it level. Now,,, if I need to make a turn to that side, it don't happen that quick! Best bet in the wind situation is trim it out.
As I say, there's a lot to do in the micro-seconds you have to re-act!

Keep it simple, is my advise.

I've fitted a Lifter, now that is a bit of kit I KNOW gets me on the plane quick. All plaining (?) craft need to climb the bow wave to get going, if your better half is worried about this, assure her that the view forward will only be missing for a short while, if it was clear when she gunned it, it will still be clear when she's "up & over it"

Bow tank ,,,, do they add weight to a greyhound?

I'm waiting to be shot down now "peeps" ,,,,,
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Old 31-05-2006, 09:44 PM   #14
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Oh Mate, now I am getting seriously confussed now!!
The boat is already equipt with a manual jacking plate but never played with it as one of the bolts is seized and had to many other jobs to do on the boat that were more urgent.

Was speaking to one of my mates who used to race the larger Rings & Phantoms and it was him that recommended the trim tabs. Certainly for the straight run stability

I already have all the fittings for a bow tank BUT am hanging off fitting it as I dont want to "slow the old Greyhound down".

Anyone out there got any comments or recommendations? Appreciate we all have our own personal choices but all I want is to keep her stable and get her on the plane faster.

The engine is already offset of the centre line but in certain conditions she still has a habit of pulling to starboard which can be a bit disconcerting for the passengers.
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Old 31-05-2006, 09:59 PM   #15
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Offset engine is NOT the way to go!

Just to add to your confusion!

Bag of worms about to open here!!!!
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Old 01-06-2006, 09:11 PM   #16
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Quote:
Originally posted by Ring Owner
Oh Mate, now I am getting seriously confussed now!!
The boat is already equipt with a manual jacking plate but never played with it as one of the bolts is seized and had to many other jobs to do on the boat that were more urgent.

Was speaking to one of my mates who used to race the larger Rings & Phantoms and it was him that recommended the trim tabs. Certainly for the straight run stability

I already have all the fittings for a bow tank BUT am hanging off fitting it as I dont want to "slow the old Greyhound down".

Anyone out there got any comments or recommendations? Appreciate we all have our own personal choices but all I want is to keep her stable and get her on the plane faster.

The engine is already offset of the centre line but in certain conditions she still has a habit of pulling to starboard which can be a bit disconcerting for the passengers.
Look for a clever prop to reduce bow lift. Or am I wrong guys?
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Old 01-06-2006, 11:47 PM   #17
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you dont want to run a cleaver on a single outboard
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Old 01-06-2006, 11:57 PM   #18
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unless u have a cat or such like that generates its own bowlift
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Old 01-06-2006, 11:59 PM   #19
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We ran a 19" Cleaver on a P21 but that was purely for racing in flat water as it made it a pig to get out of the water...
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Old 02-06-2006, 08:48 AM   #20
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you dont want to run a cleaver on a single outboard
Every bernico here races with a cleaver prop
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