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Performance crimp
http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=49644
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Author:  btmannin [ Sun Jan 26, 2014 5:40 pm ]
Post subject:  Performance crimp

Having a 1746 built in the very near future. Need y'all's opinions on whether I should get them or not. From my
understanding they create lift and make for a dryer ride. Is this the case?

Author:  naj [ Sun Jan 26, 2014 5:52 pm ]
Post subject:  Re: Performance crimp

I have them and not sure who told you they provide lift. I have had up to 1500 lbs in the boat and the performance crimp is still a couple inches above the water line. So no lift there with them out the water.

I do think they help with water spray.

I think they suck in Lillie's. I find in thick Lillie's they catch them and pick the boat up out the water. Buddies with flat sides do way better them my boat.

Author:  bengtr35 [ Sun Jan 26, 2014 5:58 pm ]
Post subject:  Re: Performance crimp

They help your back in stay higher while running. It makes lift by making the water that rides up your sides while running gets thrown off the hull. The more water ridding on the sides tends to suck the back the boat down.

Author:  Full Throttle [ Sun Jan 26, 2014 6:05 pm ]
Post subject:  Re: Performance crimp

I like the faded v crimp some of the builders are doing now...

Author:  North LA Hunter [ Sun Jan 26, 2014 6:08 pm ]
Post subject:  Re: Performance crimp

I think if you could make a performance crimp lower as in making the bottom brake closer to the water it would produce a little more lift. Never seen it done but throwing ideas out there.


Sent from my beeper

Author:  nasty [ Sun Jan 26, 2014 8:49 pm ]
Post subject:  Performance crimp

They do provide lift.they reduce friction from the water. They keep water from climbing the gunwale up to the gunnel caps thus lifting the hull that much more. They deflect the water out and away from the hull. Though it may not be much lift I'm sure it helps.

Author:  btmannin [ Sun Jan 26, 2014 11:13 pm ]
Post subject:  Re: Performance crimp

Alright thanks fellas I appreciate the feedback

Author:  banded-mallard [ Mon Jan 27, 2014 8:03 am ]
Post subject:  Re: Performance crimp

I have the fade crimp on this hull. It does well to keep dry. My older hull had the V crimp all the way down the side from fron to back, similiar to the prodrive hulls. It kept me dry as well. As far as lift is concerned, get a stage 2 and it won't plow. Your not running 50 plus and mud rig are not hyperlift hulls. You want less drag, have a longer rake. I did this on my current hull and won't go back to anything else.

Author:  dfou [ Mon Jan 27, 2014 8:24 am ]
Post subject:  Re: Performance crimp


Author:  banded-mallard [ Mon Jan 27, 2014 9:01 am ]
Post subject:  Re: Performance crimp


Author:  dfou [ Mon Jan 27, 2014 9:57 am ]
Post subject:  Re: Performance crimp


Author:  pokey79 [ Mon Jan 27, 2014 10:39 am ]
Post subject:  Re: Performance crimp

Dfou u can correct me if I'm wrong but the crimp in the side is for strength to not to have bracing on the inside

Author:  DuckHunterF250 [ Mon Jan 27, 2014 10:51 am ]
Post subject:  Re: Performance crimp


Author:  dfou [ Mon Jan 27, 2014 12:15 pm ]
Post subject:  Re: Performance crimp


Author:  Boomer [ Mon Jan 27, 2014 2:13 pm ]
Post subject:  Re: Performance crimp

How far up the sides seems to be the best place for the bottom of the crimp to be?

Author:  naj [ Mon Jan 27, 2014 8:49 pm ]
Post subject:  Re: Performance crimp


Author:  take'emgator [ Mon Jan 27, 2014 8:56 pm ]
Post subject:  Re: Performance crimp


Author:  BlueShamu [ Mon Jan 27, 2014 9:09 pm ]
Post subject:  Re: Performance crimp

I'm no boat builder and am not claiming to be correct...but I was under the impression the "performance crimp" was for strength. Seems it would have to be awfully low...and you would have to be going awfully fast...to give the boat any type of lift from the sides and simply spray deflected away from the sides. But then again, I am used to seeing lift created by directing water down...not out. Not saying it wouldn't do it...just don't think you are gaining much lift...if any...especially when running on a step at 30 mph +/- 5 mph.

Author:  nasty [ Mon Jan 27, 2014 9:12 pm ]
Post subject:  Re: Performance crimp


Author:  JD [ Mon Jan 27, 2014 9:25 pm ]
Post subject:  Re: Performance crimp

V's are put in the sides to add stiffness. Angle and height are wrong to add lift or turn down water.

For lift you need 1.5 or 2" turn out Parallel to the bottom about 2" up

JD

Author:  DuckHunterF250 [ Mon Jan 27, 2014 9:27 pm ]
Post subject:  Re: Performance crimp


Author:  BlueShamu [ Mon Jan 27, 2014 9:36 pm ]
Post subject:  Re: Performance crimp


Author:  btmannin [ Mon Jan 27, 2014 9:48 pm ]
Post subject:  Re: Performance crimp

So how far up the sides should they be when measuring from the bottom of the boat?

Author:  nasty [ Mon Jan 27, 2014 9:50 pm ]
Post subject:  Re: Performance crimp

Eh, less resistance on the sides... Less drag on sides would mean more boat up in the water column... Kinda like the rake thing, less resistance more boat out the water, more lift.. Bass boat riding on a pad, less resistance creating lift same concept I'm sure it's minute.

Author:  btmannin [ Mon Jan 27, 2014 10:01 pm ]
Post subject:  Re: Performance crimp

Ok about the rake thing... I have ridden in a 1650 (May have been 52 I can't remember)express hyperlift hull and we were outrunning a 1648 war eagle. Both boats almost identically loaded. And both had built tohatsu megas that were built by the exact same man with the exact same mods.. So something made a big difference.. I run hard bottom timber and need as much lift as possible out of as narrow a boat as possible. Already have a long tail, and it's great for what I do, but it's just
Not enough rig anymore (longer runs, bigger loads) so it's time for the move on up to a SD

Author:  btmannin [ Mon Jan 27, 2014 10:01 pm ]
Post subject:  Re: Performance crimp

Ok about the rake thing... I have ridden in a 1650 (May have been 52 I can't remember)express hyperlift hull and we were outrunning a 1648 war eagle. Both boats almost identically loaded. And both had built tohatsu megas that were built by the exact same man with the exact same mods.. So something made a big difference.. I run hard bottom timber and need as much lift as possible out of as narrow a boat as possible. Already have a long tail, and it's great for what I do, but it's just
Not enough rig anymore (longer runs, bigger loads) so it's time for the move on up to a SD

Author:  nasty [ Mon Jan 27, 2014 10:06 pm ]
Post subject:  Performance crimp


Author:  btmannin [ Mon Jan 27, 2014 10:12 pm ]
Post subject:  Re: Performance crimp

Yea both were mod v's. (Not just the duck bill on the war chicken) both made out of .100 ..express hull did have a much longer v.. So my next question, what would be the optimal hull for achieving the best hole shot. And remember this is going to be a square chine 1746.. Would it be a 7.5 foot rake, hunt deck, and performance crimp 2" up the sides?

Author:  nasty [ Mon Jan 27, 2014 10:16 pm ]
Post subject:  Performance crimp

What I meant by modv on the wareagle is it prolly has a simple v with ribbed bottom. That hyper lift is made to run on a pad like a bass boat. That's a loaded question lol, seems like you've got your mind made up

Author:  btmannin [ Mon Jan 27, 2014 10:22 pm ]
Post subject:  Re: Performance crimp

Nah my mind isn't made up on every aspect of the build. I've just been around for a while and have a pretty good idea of what I want/need. does the longer rake get on step faster?

Author:  naj [ Mon Jan 27, 2014 10:23 pm ]
Post subject:  Re: Performance crimp

If I am not mistaken my Sportsman Fab Hull has a 7' rake.

Author:  BlueShamu [ Mon Jan 27, 2014 10:30 pm ]
Post subject:  Re: Performance crimp


Author:  btmannin [ Mon Jan 27, 2014 10:36 pm ]
Post subject:  Re: Performance crimp

Thanks shamu yea I have looked at Corey's thread and really Like cottonmouth boats. I wish I could afford an instigator hull that reaction chine would be saweet. Especially running in the woods. But a working college student's budget keeps the options pretty thin.

Author:  nasty [ Mon Jan 27, 2014 10:37 pm ]
Post subject:  Re: Performance crimp

Tbh I'm not entirely sure about it bt. I do know trim tabs will help with hole shot. But I think most of hole shot has to do with the prop and driving skill set.

Author:  JD [ Mon Jan 27, 2014 11:30 pm ]
Post subject:  Re: Performance crimp


Author:  da go get'er [ Tue Jan 28, 2014 12:43 am ]
Post subject:  Re: Performance crimp


Author:  nasty [ Tue Jan 28, 2014 9:13 am ]
Post subject:  Re: Performance crimp


Author:  banded-mallard [ Tue Jan 28, 2014 11:58 am ]
Post subject:  Re: Performance crimp


Author:  dfou [ Tue Jan 28, 2014 12:00 pm ]
Post subject:  Re: Performance crimp


Author:  banded-mallard [ Tue Jan 28, 2014 12:05 pm ]
Post subject:  Re: Performance crimp

It does. The slightest ripples in the water will have less effect on a longer transition than a shorter.

Since were looking at opposite end of the spectrum. Why not go with a 4' rake? More hull in the water. Better load carrying due to displacing more water. Bigger flatter surface.

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