Proboat release new Blackjack 42" catamaran

[ACKopter]

Well, I am heading down the lake and doing a lot of testing with some RC weights that I got from my LHS. They are 1/2oz sticky adhesive weights that i can stuff up front under the stroyafoam.
I am going to start out with 1 strip which equals 1oz and see if that will help keep the boat from coming up on me on 8s. Plus, I lowered my strut a bit so the boat of the boat will stay down more.

Okay, I'm a little confused. You said you had the problem solved by stuffing 2 200 gram weights (14 oz) under the styrofoam but now your starting over with 1oz of sticky weight?

FWIW I drilled a 1/2 hole through the styrofoam towards the nose of the sponson and inserted 7 oz of weight (3.5 on each side) roughly 4" before the tip of the boat. It does help a great deal if the boat has a smooth run, otherwise it almost seems to induce more bounce if it hits any ripples or wake leading me to believe Panther6834 definately has the hull characteristic figured out. I really need to find a better location as my river area is less than ideal to run full throttle without fear of flipping or worse between the boat traffic, current, floating debri and jumping Sturgeons which I completely forgot about.

[ACKopter]

Because its raining here and there is NO chance of running in the river on the weekend anyway I've done a bunch of homework and came up with a few changes to test on my next outing. I read up on balancing and as luck would have it my original weight placement was right at 33% . I moved the weight a little farther forward and now have a balance point of almost exactly 35%, which is about max from what I'm able to determine. Next I raised the drive strut where the bottom of the strut is about 1/16 above the bottom of the sponson. One thing I seem to have issues with is a little excess water in the hull so I took some shrink tube and sealed the strut where the stuffing tube enters it so I hope that solves that problem. Soon as I get a chance to wet the boat again I'll post my results. I caught a youtube video of someone running an ABC 1817 and the boat seemed very well behaved so I have one of those on the way and see how it does once I get all the other bugs ironed out as best as I can.

[njandy]

took my boat out today for the first time today, water was really choppy so there was no chance of going full throttle but i have to say the boat handled it way better than i expected. flipped it once because i got a little to comfortable. overall i’m really happy with the purchase, there are a few small things that could be improved upon but that’s the nature of rtr rc’s. i know there’s a few people on the fence about getting one but if it can handle rough water and a goose strike i’d say it’s a pretty solid boat. got a couple photos jumping out of the water. EBBE9208-3AB0-4A8A-9D0F-EFC071A966F5.jpg

[jhurlbert]

AE1B72F6-D2A4-42C2-974E-565094D338ED.jpg
Hit something in the water. Bummer

[ACKopter]

Well thats a bummer. I've been thinking of getting a replacement as a "just in case" if not for anything else other than to eliminate down time while waiting on replacements.

[alvinm]

Okay, I'm a little confused. You said you had the problem solved by stuffing 2 200 gram weights (14 oz) under the styrofoam but now your starting over with 1oz of sticky weight?

FWIW I drilled a 1/2 hole through the styrofoam towards the nose of the sponson and inserted 7 oz of weight (3.5 on each side) roughly 4" before the tip of the boat. It does help a great deal if the boat has a smooth run, otherwise it almost seems to induce more bounce if it hits any ripples or wake leading me to believe Panther6834 definately has the hull characteristic figured out. I really need to find a better location as my river area is less than ideal to run full throttle without fear of flipping or worse between the boat traffic, current, floating debri and jumping Sturgeons which I completely forgot about.

What a coincidence, I did the same except I used a super long drill bit and made a hole through the styrofoam reaching each tip. I poured 4 oz's of epoxy on each side. It's funny how the tips are now rock hard. I have a bunch of weight strips in front of the esc that I'll remove for this testing, along with changing strut depths. Hopefully I can get more consistent flat runs.

[ACKopter]

What a coincidence, I did the same except I used a super long drill bit and made a hole through the styrofoam reaching each tip. I poured 4 oz's of epoxy on each side. It's funny how the tips are now rock hard. I have a bunch of weight strips in front of the esc that I'll remove for this testing, along with changing strut depths. Hopefully I can get more consistent flat runs.

Very similar indeed and I too used a super long drill bit. . From your description I think the only difference is what we actually used for the weight. I opted for a 5/8 bolt with the head cut off and I made a slot in the end so I can literally screw or unscrew the bolt and it will change the bolts position (and boat CG) depending on how far towards or away the weight is from the tip of the sponson. Keep us posted as to your test results and I'll do the same.
I'm all set to go but it is raining pretty hard at the moment so I'm stuck here waiting out the weather.

[JonMar]

Quick question about the epoxy.

Because I’m useing pool noodles stuffed around to make the front back stiff (included weighs at front), how well epoxy with fiberglass fabric stays in this plastic matherial?

[alvinm]

I'm thinking it should bond to the plastic with no issues.

[Nick1979]

For those of you who had a chance to try the BJ 42 - is it worth the $600?

[ACKopter]

For those of you who had a chance to try the BJ 42 - is it worth the $600?

As a first boat, for me the answer is yes. I have flown planes for the bulk of my R/C experience and I am really enjoying myself. I wish I had easier access to a better area to run the boat though. You would think that living within a half mile of two rivers and not far from a town called Lake City it would'nt be too tuff.

[UpliFT-RC]

For those of you who had a chance to try the BJ 42 - is it worth the $600?

100 % ITS AN awesome boat!!
Check out my first run with it on 8s.

https://youtu.be/2vpdUOZsyss

[ACKopter]

Well, I am heading down the lake and doing a lot of testing with some RC weights that I got from my LHS. They are 1/2oz sticky adhesive weights that i can stuff up front under the stroyafoam.
I am going to start out with 1 strip which equals 1oz and see if that will help keep the boat from coming up on me on 8s. Plus, I lowered my strut a bit so the boat of the boat will stay down more.

What did you finally settle on for weight amount and placement?

Its Thursday already and I still have not had a chance to get mine wet again, maybe this afternnoon but there is still plenty of rain in my area so it's iffy at best.

[R_Kephart]

The 6110 does have a gyro built into the receiver. To shut it off you need to bind the radio in non AVC. Power on the RX and press the bind button 3 times and hold it down until it starts blinking. Then hold bind button on the TX. This will disable the AVC. This RX was used to provide long range telemetry versus the SR315 receiver. Here is a link to the manual:

https://www.horizonhobby.com/on/demandware.static/-/Sites-horizon-master/default/dwff7675e2/Manuals/SPMSR6110AT-Manual-EN.pdf

[alvinm]

What affect will disabling the AVC do to the boat?