1/6 scale Jetsprint boats and 30mm Jet drives

[Spartanator]

Hi Lads,
Thanks everyone for the replies,
Just launched my online store:

http://www.shop.mickiebeez.com/

Still have the shipping side to be sorted, also putting spares on there for the units. These are also available thru Steve at OSE too.
Regards Mick

Cool, Maybe create a ARTR version that just needs lipos and radio system...?

[mickieb49]

Cool, Maybe create a ARTR version that just needs lipos and radio system...?

The only problem with doing rtr is I am basically working for $2 an hour, been there and done that.

[Spartanator]

The only problem with doing rtr is I am basically working for $2 an hour, been there and done that.

Understood, only reason I commented is that someone on EBay sells the little Nqd jet boats for $269-$299

[mickieb49]

Just a quick update guys,
I have had to pack everything up getting ready for moving the business and house, i will be up and going in about 6 weeks,
The Marathon hull plug has been machined, got some finishing touches, then will be molding , testing.
I will be still selling the units during this time, then back into building the hulls after.
Take care, and happy boating

[ManDime]

Hey, so i got a a blue Spartan shell from spartanator and i want to make it into a jet boat. I know someone has done it before with a graupner jet drive but i like supporting small business inventors. So with your jet i would have to cut down the jet drive to make it sit well. Would you suggest i cut the jet drive or should i make a raked cut on the hull similar to your boat designs and fill the gap with balsa with alumium sheet? Also I noticed you ran the leopard 1800kv. I also noticed you said you suggest a top end of 28k rpm's. What did the leopard motor produce? I was thinking of running a turnigy 1500kv outrunner motor with this. Would there be a problem with that? What motor would you suggest beside that? I recently emailed on your site as well. I'll take anyone's opinions on this as well.

[ManDime]

Alright, found the equation. So it's motor kv x Voltage applied = no load rpm. So 1500kv x 14.8v(4s) =22,200 rpm's no load. So with that figured out 2000kv motor is the most efficient at 28,120 rpm's (4s) no load. So heard about how the motor is connected through the email reply. I'll look through the pics again to get a good visual of it all.

[mickieb49]

Paul,
If you wish to put this unit into the Spartan, I would suggest to make a flat section in the last 8" of hull, this does 2 things, creates a ride pad to better the flow of water into the unit, and also helps in mounting the unit.
Please post your results in you thread, I for one will be interested in the results. Just be careful when considering the Kv and max RPM with Jet units, more RPM does not necessarily mean faster, jet unit efficiency drops off at about 20 000rpm.

The Marathon hull plug is nearing completion , I will be posting the results and pictures soon.
Regards Mick

[ManDime]

Almost there with my build!





Just got to do soldering and positioning the motor! Positioning the motor in a boat never meant for this motor mount or drive system isnt easy.....

[ManDime]

The turnbuckle is adjustable and i have a sleeve in the ball end to make it a snug fit so theres very little slop.

[mickieb49]

Nice posts guys,
Mike would you like another nozzle?

Point taken with the Steering arm, to change he molds at the moment its going to be a few $$ to modify and beef up the area. So please bare with me , I will get this change done, just may take me a short time to get the funds up to do so. I have not experienced this break yet, but I am only using 2-56 rods and arms, and have double checked the end point adjustment so as there is no excess movement to strain the arm, there is nut much pressure needed to turn the nozzle, certainly not like a normal rudder.
I have just finished building my new workshop, so my first job is to get the Marathon hull up and going, then am going to keep improving the jetsprint hull.
If anyone requires a hull or jet units or parts please PM me , or go thru Steve here at OSE.
Take care guys.
Regards Mick