JAE 45 ski mods

[Butch Londrigan]

Any one have any problems with there jae 45 hopping in the strights. I run 1657 from Mark Sholund boat is fast but hops in the strights. Motor is set back as far as i can also. Is there any ski mods to be done to help this. Any help would be great.

 

[RonShaw]

Butch,

Too much lift in your prop. Personally, I would play around with the prop before you start modifying the ski. No reason to reduce ski area or angle to fix what you can correct with the prop. A lot of combined effort created that boat so check for updates before you start cutting. Good luck.

 

[Tony Drake]

Try working just the tip of your prop( just a slight bend on both tips) that worked on my .67 .it was doing the same thing now it's fine

 

[mtruex]

Short answer is yes. I just recently realized that the kit boat had a ski angle that was nearly 3 degrees. I used to run 2 degrees on my ski but have had better luck with even less angle. Zippkits is aware of this ,and joe is planning on ,or may have already made some new ones for his kits.

 

[Butch Londrigan]

I will call Joe and see. Thanks Martin.

 

[Greg Bonahoom]

I will call Joe and see. Thanks Martin.

Butch could you please post the info on this thread that you receive from Joe? I am currently building this kit and would like to know what you find out before I attach my ski. Thanks

 

[Dave Wardle]

Had the same reply from Joe very recently on the gas rigger design too...He did offer to send out the modded ski design (great product support) so its worth a call/mail.

 

[Gary Murcott]

The ski on the jae is close to 3.6 adj to 1.5 that should fix the problem

 

[mtruex]

Guys this is something that slipped through the cracks. The good thing is that it is an easy fix, and joe will make it right as he has always done with his kits/customer service. It is also something that most wont notice until they start going fast and hone in on the engine/pipe/prop setup. There are a ton of CHEAP kits winning races and setting records but everything can be made better ,and i can guarantee if and when we find something better you will know about it.

If people want to bash something that was designed to get people building ,and get more people involved in our great hobby well...good luck to them. Have fun an go fast!

 

[Flyguy55]

Whats the length and width of the JAE 45 Hull ? thinking about a electric conversion .

 

[Michael Hopkins]

A quick fix is make ths ski 1.0" O.D. and make the last 3" 1.5* AOA and that should fix your problem.

 

[Buckshot]

I read this the other day on another Forum.......

"The only way I can take anymore lift out of this prop is to cut off the blades."

LOL

 

[Blackout]

Another thing. You need to make sure your strut is as low as possible to the back of the ski. I lowered mine even more at the end of the season and it seemed to pick up more speed. The stut now is laying right on the back edge of the ski. Before it was slightly above. This is a .21 JAE, but the same principles apply.

 

[Jerry Muro]

So as I am understanding reducing the AOA on the Ski helps all JAE boats or is this specific to the 45?

 

[Blackout]

So as I am understanding reducing the AOA on the Ski helps all JAE boats or is this specific to the 45?

I would keep the AOA right where the JAE team designed it....

 

[RodneyPierce]

So as I am understanding reducing the AOA on the Ski helps all JAE boats or is this specific to the 45?

Jerry, this is for the larger boats at the current moment. .45 and up. Leave the .21 at the designed angle.

 

[Jerry Muro]

Rodney thanks I did check both my hulls 21 and gas and I am at 1.9 and 2.0 on the boats so I am right were I should be. Jerry ,leaving well enough alone and not reading into this any further.

 

[RodneyPierce]

Jerry, right on. Good call.

 

[Joe Petro]

This only affects the JAE 45 (plans and short kit) as well as the JAE Gas kit.

All other JAE plans and kits are correct.

You should always have the strut as low as possible.

We will ship replacement parts free of charge to anyone that bought our 45 and gas kits.

As long as you bought it from Zippkits or an authorized dealer, contact us for free updated parts.

Note that we have to limit this to the US only.

Joe

 

[anthony_marquart]

I have found that a more narrow ski will reduce also. On my boats a little less width helps the prop stay hooked up in rougher water. I am running / building about 2 deg angle on mine.