Pro Boat Formula Fastech Jet Drive Project

[j.m.]

put an "H" in front of the bottom link.

[rockwerks]

I think he means scale racing emulating full size river jet boat racing like this...

http://www.vidilife.com/video_play_1...River_Race.htmGhost

That would be it...........up one side of the creek, back down the center and up the opposite bank timed through gates

[Viking]

J.M.
too late to edit that post. Here is the link again to the Challanger Video
http://www.youtube.com/watch?v=faWJTGbdM9Q
with the h
Thanks;
Viking

[crazzy maxx]

diego are u backing out of what seemz to be ur 30th jetboat build?

[Diegoboy]

No. Heck no! I am on standby (on call) this weekend. I plugged the HW mounting holes in the transom, but haven't had time to take, or upload a pic yet.

[Diegoboy]

Got more time with it this morning, and Viking is absolutely right. My hole is too far fwd. not to mention the transom isn't 90° to the bottom of the boat. This one is fighting me every step of the way, but a brainstorming session with myself this morning may have a way to beat it! It's gonna be awesome!

[calcagno45]

Can you use brushless motors with these jets drives as well? And what types of speeds do these push?

[Diegoboy]

This one WILL definitely be Brushless! I'm not sure the speed, as I have never used this size drive before.

[crazzy maxx]

what size brishlees are you thinking on putting in?

[Diegoboy]

some sort of 540 L sized can

[dirtysouth31]

ready to run it today?????

[j.m.]

A 540L won't be enough power for the 40mm drive, unless you are running it on 4s.

You should use an XL.

[Diegoboy]

Yup! PolyRC 4S 3000

[j.m.]

If you haven't bought the motor yet, you might want to up the size. A 40mm jet takes WAY more power than a 40mm prop.

[Viking]

I'll second that notion.

[calcagno45]

any updates? still very interested.

[Jesse J]

DIEGOBOY update us, we are waiting! KANT wait to see that puppy go

[calcagno45]

I think he is preoccupied now with that Graupner Hydro....

[j.m.]

I would be too.

[Diegoboy]

Ok, Update as of today.
The drive is installed, just waiting for the electronics.
I also need to smooth the bottom a bit too.
Tub tested to be water tight already!

[Viking]

Hey Diegoboy;
Boat looks great.
Have you done a mock up of all the components to check the Center of Gravity???
Nice job moving the hole back,BTW.
Viking

[Diegoboy]

Thanks. no mock up yet. i have to split my time on many projects

[j.m.]

If you'd go ahead and give me the sx4000, then we wouldn't have this problem, now would we?

[Diegoboy]

UPDATE!

Steering servo installed
Pushrod linkage installed
Water pickup installed
Antenna relocated (off the hatch)

[Diegoboy]

I'm probably going to change the push rod from the 2-56 to 4-40!

[calcagno45]

Awesome! Some progress!!!

Good call on the pushrod change. I think the thicker, stiffer pshrod will keep it where you want it.

[Jesse J]

Exxxcellent, even closer to seeing it GOOOOOO. Great work, looks real clean!

Any particular reason for this hull? I have an old electrovee I am saving for this very type of project. Although, you may have a better hull, being a modified V.

[Diegoboy]

I first did this to a Pro Boat Shockwave 26 (because of the flat spot on the bottom) It was great. I wanted to do the same thing in a fiberglass hull, the Pro Boat Fastech is the only one I found with this flat spot like the SW26.

[Viking]

Hey Jesse;
I have an electro Vee with that same jet Here---http://www.dickieeng.com/Jet%20Vee/index.html-- and a Vidio of it Here---http://www.youtube.com/watch?v=sLurjY0OYkQ-- Running in the White water of a local river in March.
Hey Diego;
I Gutted my Electro Vee again. This time I am going Brushless. I just couldn't get enough power in her to run right.
In order to get the COG any where near correct I had to cut 3" off the shaft and tube, so I could move the motor back. I put in a Feigao 10XL. 2 2S LiPos are going along side the jet up against the stern. I am dieing to try it out but there is too much ice in the river.
Viking

[Jesse J]

Great video! looks like fun! was that full throttle? I was thinking of putting in a sc 700 or like you say XL brushless. I will be watching for more videos under bl power!

How is that hull? would it be worth laying down some good sturdy fg before construction? Do you have any shots of the transom? How do you mount up that jet?

Had a thought, what if the V were flattened like the Fastech during the fg job? It would take some guts to chop of the hull, but could be done right and might help.