Js440 to 701 w/ 144 pump

[Motorheads5]

I have a raider mid shaft that's about twice as long as a superjet one you could cut to length and remachine thread's for the coupler end if you want it just pay shipping. snowxr makes aluminum pump shoes they are quality pieces. Lookin good I love the js 550's.

 

[Superjetter_95]

thats a good idea, we've probably got a few of those laying around actually. But i appreciate the offer.

how would you machine the threads? what type of cutter would be best?

Ive got a machine shop at my school that does work for Nasa so im sure theyll have what i need to do the work.

 

[Superjetter_95]

Welll i did some more work on the ski today. I cut out the area that needed to be removed so the high spot on the pump could sit right. the pump now sits flat against the ski and the driveshaft is only off by maybe a quarter of an inch or so. im hoping with some grinding i can get this thing to fit just right without moving too much of anything. but as of now this thing is making some progress :beerchug:

the tray should only need to move up a half an inch or less im hoping. it looks like the pump shaft sits pretty close to where it needs to be

 

[Superjetter_95]

got some more work done today.

started building up the rise in the tray for the pump to clear.

also sanded down the ribs inside of the ski so i could reinforce the hull.

more work to come! but for now, heres some pictures of the progress! :bananajump:

four layers of i believe 8oz glass on the rise, and then 2 on the inside of the hull.

 

[Foximus]

LoL. Oh jeeze. I forsee disaster.

 

[Superjetter_95]

you can see whatever you please, im not gonna see squat till i get out there and something breaks. THEN ill worry about things.

 

[Superjetter_95]

also, the original mounts for the motor mounts are going to be ground down, and we are going to glass in superjet motor mounts. I also am going to cut out the original battery box and weld up an aluminum one that will either sit farther back or in another location as well.

The rise looks horrible but we are going to use filler and then when i turf the ski, it will have underpadding around the hump

 

[Foximus]

guess i'll just keep my mouth shut then and let you find out foryourself. :bump:

 

[Superjetter_95]

well obviously theres going to be issues with it considering this isnt the same way you went about doing yours. But in order to figure it out, ive got to start somewhere. so if things break, so be it. I dont mind sanding and glassing as much as i need to.

The pump lines up with the original drive shaft tube, and all i have to do to mount it right is to put in new nuts where the pump sits now. The mid shaft also needs to be mounted as well.

As for the ride plate, the width is the same as a waveraider plate, so im working on some ideas for that. It only sits about half an inch lower than the rest of the hull. so i can make a smooth transition to it hopefully. It also can be grinded down on the pump side about a quarter of an inch as well.

 

[tnj4life]

What I thought about doing on my js when I get ready to put the kawi 650 pump in it is cut however much out of the tray for my pump to clear (like you did) take 2 part foam and raise my tray up however much needed, then glass the whole tray with a few layers of 17oz biax. And of course glass up the pump area. Its kinda an alternative to changing the pump section.

 

[Superjetter_95]

yeah, im probably going to lower it a bit, i made it slightly too high. Im not sure if im going to raise the whole tray or not yet, but that is a possibility. i may just make it slope downwards so it doesnt sit high the entire length of the tray.

the pump only needs about half an inch of clearance to sit clear of the tray floor so its not a huge amount of rise