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  Taking pic of AV plate!

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Author Topic:   Taking pic of AV plate!
jameso posted 09-22-2003 03:34 PM ET (US)   Profile for jameso   Send Email to jameso  
I wanted to see the location of my AV plate in relation to the water surface while on plane. OK, you say 'just lean over the transom. That is not normal operating practice and would effect the trim. Instead I fastened my digital camera to a monopod, set the self timer and with the boat on plane, trimmed out and at WOT held the camera back and took several shots. 36.5 MPH WOT via GPS
AV plate is completely above the water surface. Since the water intakes are only about an inch below the plate I don't think raising the engine any more is a good idea.
Also any Doel fin or other device would not be in contact with the surface so why bother with that.
Jim Armstrong
jimh posted 09-22-2003 08:37 PM ET (US)     Profile for jimh  Send Email to jimh     
I tried the same thing--taking a picture while underway--but not quite as elaborately as your technique. Here are the results:

http://continuouswave.com/whaler/images/DSCN0017-small.jpeg

vdbgroup posted 09-22-2003 09:46 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
Why would you want the Doel Fin to be in contact with the water? So it could create drag?
The Doel Fin and other devices help you plane easier at lower throttle. They are not supposed to be in the water while underway.

In my opinion, and experience, these Doel Fin and Stingray devices may be useful for boats of inferior design (AquaSport 175 Osprey comes to mind), but not Whalers, which plane superbly.

Why?

Dick posted 09-22-2003 10:24 PM ET (US)     Profile for Dick  Send Email to Dick     
I hadn't thought of pictures of where the cav plate and water intakes were when underway.
I have an IR underwater video system and can rig the camera anywhere I want. As I am in the third hole up it would be interesting to see. If i finaly get the boat in the water this year I will give it a try and report.

Dick

JayR posted 09-23-2003 11:49 AM ET (US)     Profile for JayR  Send Email to JayR     
For those of you not aware of the benefit of a hydrofoil on a Whaler, here goes...

At slow speeds in large seas, the fin acts as an anchor for the stern section. Previous to the installation, my boat would pitch forward on say a 10' swell and slap the trough. This would result in a bone jarring, teeth chattering pounding. I have 7 ruptured disc as proof to the ability of this hull to beat the crap out of you.

After the install, the boat behaves completely different. As the boat reaches the crest of the wave, the fin prohibits the forward weight from extracting the aft section from the water and keeps the hull in a level or close to level attitude. In doing so, the boat does not pivot forward, nor does it slap any longer.

If not for this, I would have given the boat to my worst enemy :-). It is now a cherished possession.

For what they cost, a person would be a fool to discount them and not install one.

Give it a try and you will not be disappointed.
OR.... take a ride on a boat like your own equipped with one. I'll bet you buy one on the way home.

vdbgroup posted 09-24-2003 11:32 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
I don't buy it! The fin is pure drag - you should use negative trim to minimize hull slap. It appears that the "fin" works for you at minimum plane speed, by draggin the stern down so you don't pound. How do you think that is accomplished? - by "drag" of course.

I assume because of 7 ruptured discs ( what the f@#$ are you doing in a Whaler with that conditon?), you don't get to go fast in chop, and that's good, for your motor ( and back) because the fin will wreck your efficiency faster than a Whaler will bust up your back.

SpeedBump posted 09-25-2003 10:35 AM ET (US)     Profile for SpeedBump  Send Email to SpeedBump     
JayR- careful of what medical info you post you may get some bottom feeder e-mailing you to file a product liability case against Whaler for your back injury and destroy a good company in the process.. :-)
JayR posted 09-25-2003 07:38 PM ET (US)     Profile for JayR  Send Email to JayR     
VDB, we are talking very large seas here. Have you ever gone over a 10-15' swells at 10 knots? Drag? Pfffft!!!

Trim at that speed,would be ineffective. I guess it is over your head.

And yes, I have 7 ruptured discs and still go out in the Montauk. I pick my days. If I have to give that up, I might as well put the gun in my mouth now.

JayR posted 09-25-2003 07:41 PM ET (US)     Profile for JayR  Send Email to JayR     
Speedbump, no chance. I was pre-disposed and did not know it. It (the boat) was the last straw. BW was no way liable.

I've had 2 lamenectomies and an anterior cervical fusion. Waiting on 2 more surgeries at the moment.

I'll never give up boating!!! NEVER!!!!

SpeedBump posted 09-25-2003 08:38 PM ET (US)     Profile for SpeedBump  Send Email to SpeedBump     
JayR- my comment was made in jest, toung in cheek or foot in mouth. Just looking to rile up the professionals out there.

I am familiar with back issues that's one reason I moved from a particularly "bumpy" 13' classic to a 16'7" classic. Needed that smoother ride and ability to stand to absorb the jarring chop in the bay where I boat.

BTW- I agree on the benefits of a fin to help balance the boat. I have a Dol fin on my old 13 running a 40 HP yamaha. It did wonders for the ride, adding great stability and performance at all speeds.

I will be adding a fin to my Nauset running a 70 HP Nissan this coming spring when she goes back into the water.. I'll be trying the SS turbo lift from grand island marine that has been discussed at great length here.

vdbgroup posted 09-25-2003 09:00 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
Forget the Doel Fin, how about a parachute?
JayR posted 09-25-2003 09:05 PM ET (US)     Profile for JayR  Send Email to JayR     
Tell me more about this turbo lift. I did a google search and came up empty handed.

Parachute?? I don't get it.

My kids do the same thing. "I don't like that" before ever trying it.

jimh posted 09-25-2003 09:21 PM ET (US)     Profile for jimh  Send Email to jimh     
After-market foil appendages for the lower unit have been rather well discussed--might say beaten to death. Could we leave them out of this discussion?

I am curious if people think the running position of my AV plate looks good or not. See link to pix above.

SpeedBump posted 09-26-2003 02:59 PM ET (US)     Profile for SpeedBump  Send Email to SpeedBump     
JayR here is a link /lengthy discussion on the turbo lift with excellent photos.. you may need to copy and paste it in your address bar of your browser.

also can be found in performance section under "photos of fabled turbo lift", last posted, 8-17-03

http://continuouswave.com/ubb/Forum4/HTML/001898.html

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