Yes, the boat was much better as a result.
No, my boat performed fine without the need for a foil.
Mate,
I fitted a foil to my previous rig (40 hp Mariner tiller steer on a 4.6 Clark open tinnie).
Prior to the foil (Stingray model), my boat would reach nearly 60 k's at WOT, but had "porpising" issues. After the the introduction of the foil, the boat would plane at lower revs and the nose of the boat would stay level. Only drawback I lost over 15% off my top end speed and could now only get high 40 k's at WOT.
Regards
Craigie.
I have had my new boat (4.1 Safari/40hp Yamaha 2 stroke) for a couple of months now and am still running it in and sorting out the setup.
I am having issues with porpoising which is a real pain in the bum. It seems to happen at mid speed range, which unfortunately is the speed that I want to run at most of the time.
I have lifted the motor one hole from what the dealer installed it at and the cav plate is now level with the bottom of the hull and have also mounted my fuel tank at the front.
If I have the kids on board (weight at the front) it is not really an issue but one up it is a real pain.
I think it is caused by the weight of the motor and me at the rear and am seriously thinking of trying an SE Sports 200.
I just dont think I have any other option rather than carting sand bags or similar at the front of the boat all the time?
The poll results show that more than 4 in 5 people have experienced improvement in the boat after fitting a foil.
motor still too low?Originally Posted by geoffmck
cheers Murf
Apologies if I'm off-track here, never had a foil so can't comment on their effectivenes one way or another, however, are you 'driving' from the rear thwart/seat?
I constructed (although you can buy 'proper' ones) a tiller extension and now drive from just forward of centre. My 4.2m dory sits great in the water under way, whether at slow, medium or fast speed.
Only a tight fitting piece of PVC pipe, but works well for me by allowing me to put my 80kgs forward of centre. I've been using this set-up for 4 years without incident, including bar crossings in favourable (only) conditions.
Extremely cheap option!
Cheers.
Hi mate, I am driving from the pedestal seat put there for the purpose. I did use an extension like yours in an old boat I had with thwarts in it but am not going to do it in my new boat. I bought a nice motor with power tilt and trim on the tiller handle and want to use that. I'll try lifting the motor another notch and see how that goes.
I have lifted the motor one more hole and the cav plate is now just above the bottom of the hull but still seems to be just under water at planing speed.
There has been a huge reduction in porpoising from what I started with but there is still a little bit at times, particularly one up.
I really want to try a se sports 200 just to see if it totally eliminates my issues but dont want to drill the cav plate so am in the market for one with a drill free sports clip. BCF do not have the drill free clips in stock and they are on backorder until 18 April.
Does anyone have one they want to sell?
Geoff
Just drill the holes; your going to leave the foil on anyway.
If you buy a clip on one, one wonders how long before it walks or falls off?
You could always pod your boat if you really want a difference.
Cheers
Chimo
What could go wrong.......................
geoffmck if you are going to fit a se sport foil go to their website and send them a query on which is the best size ,either 2000 or 3000.I have a 4.2 viper that I have fitted a 40 hp four stroke Merc to and gave them all the details such as model etc and they sent a reply saying the 2000 wont fit and go the 3000.Just check with them because the 40 hp is the transition point from a 2000 to a 3000
Less is more when it comes to foil sizes if the above this is where you are ATM, IMO don't get an SE sport go for a permatrim, far superior.
cheers fnq
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