BlackJack Gets Upgraded

[Doby]

Guys;

My Blackjack runs great on 12 cells, runs fast on 14 cells( just don't ask it to turn to sharply). As I just ordered a Hydra 120 to replace my SV-27 speed control that went up in a spectacular fire and smoke display on the weekend, the SV controller in my Blackjack will be moved to the SV-27 and the Hydra will go into the Blackjack, along with my 5S 5000 mAh Lipos!

This should have several results,

1) Crazy speeds in a straightline
2) Even larger turns will be required
3) The SV motor in the Blackjack will be put to the test, its rated to 18V , so it should be interesting to see how long it lasts !
4) The Proboat outdrive will be stressed test to the max !
5) More time will be spent in its resting position ( on its back) then ever before :rolleyes:

Why do we do this to ourselves ?!?!?

[saleens7]

Why do we do this to ourselves ?!?!?

because it makes for a good video, so dont forget to bring along a camera

[hammertime]

this will be interesting.......cant wait

[SJFE]

Hey how about a front air difuser to keep the nose down??? I am thinking a one inch dolefin on the od. Maybe even turn the edges up @ a 90 for some additional turn fin afect.

[FE_Chris]

:rolleyes: Good idea.


So whats the story? We gonna see the death of a SV motor on 5s lipo? :D

Hey how about a front air difuser to keep the nose down??? I am thinking a one inch dolefin on the od. Maybe even turn the edges up @ a 90 for some additional turn fin afect.

[Doby]

Just waiting for the Hydra to arrive , I ordered it from OE last Monday,,Takes about 1.5 weeks to get to Canada, Must be because its uphill !!!

[Fluid]

Make certain that you use a smaller prop for the first few runs. The additional voltage will cause a large increase in amp draw that can overstress your components. Don't worry, the additional voltage will still give you high speeds.
What prop were you planning on using?


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[Steven Vaccaro]

about 1.5 weeks to get to Canada, Must be because its uphill !!!

Thats a good one! LOL

[Stealth Assassin]

This should be fun!:D

[SJFE]

If I may get off topic for a sec.. Do any of you know if someone has tested active air control surfaces on rc hydros or cats to try and counter blow offs and stability????

[Doby]

I'll be running a SV nitro prop, I have a few sitting around.
They are about 2mm smaller in diameter.:)

[Rex R]

I suspect that any active stability system would have to be a automated(onboard) one else the responce lag would make it ineffective or even make it worse.

[Fluid]

Gyros from helicopters have been tried several times with hydros and tunnels, and they just do not work. They are not fast enough to stop a blowover, partly because they have to be set so that a normal "bump" does not cause the control surface to "dive" the boat. Not that it cannot be made to work, but it has not so far.


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[don83000]

I wondered If you could please tell me where the C of G is mearsured from the rear of the sponson forward as you have your 29 Blackjack's running nice and flat without bouncing its nose up and down (porpoising). I have not run the boat yet and must say am worried about all I have read today on the subject of things burning out and weather to use 2 or 3s lipo as the shop said
3s so I purchased 6 of those but now the consensous seems to be run 2s or all hell is going to break loose. I think I may get a couple of 2s 5600 mah and keep the 3s for my heli. What prop would you recomend.

Kind Regards Don.

[Speedracer128]

I hope there's a good video of this run