Proboat release new Blackjack 42" catamaran

[R_Kephart]

What affect will disabling the AVC do to the boat?

AVC is disabled out of the box. I have heard of a few instances that this was enabled, which it should not be. The AVC "ON" will limit a few factors of the boat including the throttle response and the overall steering. This will make the boat wonder a bit, and will also reduce the throttle as the wonder progresses.

[UpliFT-RC]

Maiden run w/ bj42

Check out MY 1ST RUN WITH MY BJ42''

https://youtu.be/2vpdUOZsyss

[JonMar]

Pls upload also your progress runs 🙏👍🏼

[njandy]

i’ve got a couple good runs out of my boat so far. i’m for sure going to get a better water outlet that locks in place. i noticed while putting the batteries in it’s easy to pop the water line off and have it fall in the boat without noticing. will also get a traxxas style receiver box. my factory receiver box was completely full of water after a run which isn’t a super big deal since the receiver is water proof but i run in salt water and it corrodes the connections super fast. i put a little too much faith in the factory box and didn’t grease and of the connections in there. not sure what you other salt water guys use but on my gasser boats i spray connections with cheetah grease. a little pricey but stays in place and cleans up easily.

[UpliFT-RC]

I posted this back on post 29.

The cooling tube is 6mm outside and 1/8 inside. More cooling can't hurt but the stock system doesn't overheat at all, not even close to overheating. I would use this tube here https://www.offshoreelectrics.com/pr...ng-1%2F4-clear

I am running the OSE Extra large tubing thats 8 mm Outside Diameter with a 4 mm Inside Diameter vs using the 6mm outside tubing.
I already INSTALLED 1 grommet and just need to install my 2nd one AND MY WATER OUTLET and then i CAN start running my water lines...

[JonMar]

Well as what I can say is that drive it.. test your temps, drive it again.. test temps etc.

Optimal would be speed and stable enough to your needs with cool enough electronics stamped by the manufacture 😎👋🏼 How easy life can be

[JonMar]

This not meant to be ironic for sure. I?m just bored and over energetic at my work trip to test this thing out 🕺🏼

[Peter A]

I'm just wondering if anyone has tried this on 6s with bigger props? From what I have read the motor is 1350 kv so on a 50-52mm prop should give reasonable speed on 6s. I'm asking as I am contemplating buying one. Also would the extra weight a pair of 6s batts in parallel and a bigger prop with more lift settle some of the handling problems? Can anyone test this out?

[JonMar]

Quick update.
Back on track to do some Tests.
Too bad i did not have time to solder my 8s setup. 6s still.

200g nose with strut lowest point negative angle.

Flies nice over water just about to start rising nose for flip but no. Very good

300g at nose. No even a sign to blow over.

Prop 45mm 1.4

Videos coming soon

Speed. No idea due battery empty in my gps.

[ACKopter]

Mine is well behaved at slower speeds but I cant mange anything more than a very brief WOT as this thing is literally flying across the water and constantly ready to blow over. I finally did mange to flip it. Went in backwards and did a full submarine which ripped both batts loose and rendered the boat dead in the water. It was a rather violent crash but at least I got to do a real live rescue drill which went reasonably well. Everything checked out okay but I'll be making some other minor adjustments before my next outing. Better battery restraint for one and going to mess with the strut angle a little as well. When I do go WOT the boat is riding very nose high which appears to be compounding the blow over issue, if I can get it running flat to start with then I hope it would really help the situation.

If things continue like they are now I'll have to consider more drastic measures to get things under control.

[JonMar]

6 batteries testing behind and I?ve gone to conclusions as following:

Even a little Choppy water can easily hide your real ridequality. Day run with minor waves and this lady was working just well. Nose Stick on water and no porpoising at all( 260g at nose)

Same situation 1h later and porpoising was back.

More tuning with angels and weights. Got it to run ok with 360g at nose. Had to rise slightly prop angle.

Testing and hope to get the videos tomorrow

[Brushman]

Hello,

it is not a good idea to put mass far away from the CoG, it can keep the nose down, but will not stop the porpoising and can increase it due to polar inertia. You should put larger capacity, heavier batteries. If you have no porpoising with choppy water, it means that air is not trapped by the tunnel , but can escape from the sides. It can be caused also by the last surface touching the water, I mean the last "pad", if it is not flat at the rear, to check that, put a ruler on this last surface and see if its is flat longitudinally, if not , you will have to add material that sticks on polycarbonate. If none of these tricks are working, think of an air dam... In my opinion, this boat is too light for these speeds.

[JonMar]

7541CD8D-A393-4CDA-BDBB-7C4AD6851F36.jpegHere you go:

https://youtu.be/9wH61EQmq1Q

https://youtu.be/JTnW04aSwSo

45mm 1.4 prop

67km/h

6s

[JonMar]

Hello,

it is not a good idea to put mass far away from the CoG, it can keep the nose down, but will not stop the porpoising and can increase it due to polar inertia. You should put larger capacity, heavier batteries. If you have no porpoising with choppy water, it means that air is not trapped by the tunnel , but can escape from the sides. It can be caused also by the last surface touching the water, I mean the last "pad", if it is not flat at the rear, to check that, put a ruler on this last surface and see if its is flat longitudinally, if not , you will have to add material that sticks on polycarbonate. If none of these tricks are working, think of an air dam... In my opinion, this boat is too light for these speeds.

Thanks. This just fun fun and Im not take it too Serious. Not hunting the top speed. Just good handling and easy quick fun.

Bottom is straight and level. Latest video is done with prop strut level with bonttons. Angle down wards maximum mecanically

[JonMar]

Just came and hit 4 set of batteries with a lot different setups.
too bad I have this 4514 prop only with my and 6s

I have found my peace. 8s next
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