Proboat release new Blackjack 42" catamaran

[alvinm]

Yes I accidentally killed a goose with the 42. A dog run a small flock of geese into the pond I looked both ways before I pulled the trigger and boom hit the goose at "50knots with no smoke" sorry about last post I'm getting use to this whole forum layout.. [ATTACH=CONFIG]172915[/ATTACH]

I posted on youtube as a public safety announcement. these boats are fast so be safe with these big fast boats

IRONCLAD RC yt channel

That's not so bad for hitting a duck..

[30notsnosmoke]

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[30notsnosmoke]

Instead of putting weight into boat I moved esc forward it actually helped with the flipping also runs better with the wind acts as a wing into the wind. I love this Boat. Just check stuffing tube alignment at collet and file a little longer flat spot on driveshaft so there's more room for shaft to contract I think it needs more than 1-2mm between bushing and drivedog.

[njandy]

i’m expecting mine to be delivered thursday, i’ve never posted here but stalked for years. anyone thinking of putting some trim tabs on to help keep the nose down? id rather not add weights.

[30notsnosmoke]

From what I understand trimtabs on a cat is a no non use the strut to adjust the ride of your boat down strut = bow down. Up strut angle = bow up..

[UpliFT-RC]

Whats the link on youtube mate?

[ACKopter]

Well i am finally going to head to the river and get some time on the Blackjack. It'll be my first ever boat experience, could get interesting. I was hoping to get some downward thrust on the drive but bending the stuffing tube(?) seemed to be a little more than what I'm willing to try and best I can get is parallel with the bottom of the hull and that has the bottom of the tube even with the hull bottom. Hope it runs fairly stable as I definately dont want it to flip.

[GoFastNow]

To those that are trying to get to warp speed with this boat, what is an acceptable high speed, and how many crashes at speed are acceptable before damage is done?. If you take the boat for what it is, I really like it. It would be great for a spec class of racing. Its a fairly inexpensive BIG boat, not the fastest in the world, but not supposed to be, not the strongest boat, but its not carbon / kevlar either. Any person with a little r/c ability can buy, and have fun, its really big inside, has a ton of room inside. If you bought a boat and the first time you drove it, you went full throttle the whole charge, would you would say it needs more power?. This boat at 55 mph starts getting a little loose, but there is still more in it, seems cool to me. Mainly, I dont understand why so many try to compare this $600 boat to a $1500 boat. Its kinda like the Traxxas Slash Truck when it first came out, scale looks, and fairly inexpensive, all around fun in most weather or water.

[njandy]

you guys running the boat, has anyone touched motor timing or left it at 7.5? real new to electric boats, there’s no carbs in this thing

[JonMar]

Hello all.. ive seen your videos on YouTube and also stories at FB ProBoat group.

My head is like fixed to get this baby track low and fast. As some of you might have already seen. Ripped off the styro and planted 200g led at nose. Better but not good yet. Next step is to add more weight at nose and pinpoint the speed I want to be able to ride on.

I?ve noticed everything affects everything. Static CG, thrust angle, dynamic CG, target speed where are you aiming for or aiming only good control.

Im at work trip now and when coming back will add 8s batteries instead of 6s after getting it plaan well. More power = more trouble. If it?s not working with 6s.. yeah not with 8s

What becomes to trim tabs. I?ve also studied they are out of question in cats but for example my veles29 is super stable with them. Pond or big pool I could say quides my target speed. By reducing top speed with drag increasing trims handling got so much better. It was good trade off. It?s now like locked on.

Have a good one and let?s keep in touch.

[alvinm]

To those that are trying to get to warp speed with this boat, what is an acceptable high speed, and how many crashes at speed are acceptable before damage is done?. If you take the boat for what it is, I really like it. It would be great for a spec class of racing. Its a fairly inexpensive BIG boat, not the fastest in the world, but not supposed to be, not the strongest boat, but its not carbon / kevlar either. Any person with a little r/c ability can buy, and have fun, its really big inside, has a ton of room inside. If you bought a boat and the first time you drove it, you went full throttle the whole charge, would you would say it needs more power?. This boat at 55 mph starts getting a little loose, but there is still more in it, seems cool to me. Mainly, I dont understand why so many try to compare this $600 boat to a $1500 boat. Its kinda like the Traxxas Slash Truck when it first came out, scale looks, and fairly inexpensive, all around fun in most weather or water.

I'll compare the BJ 42 to my other $600 boats or even cheaper ones. None of them give me the headache this boat does. My M-41 has only blown over once, sonic wake has never blown over. My Zelos 36 is less than $100 more than the BJ 42 and the difference is night and day. At this point, I'm just trying to justify the $600 spent on it.

[Panther6834]

When this boat was announced, I thought about it...but, I also decided to wait, to see how others liked (or hated) it. Part of this decision was based on them having used Lexan for the hull. I worked in the plastics industry 30+ years ago, and I had a VERY strong feeling this was a bad decision of ProBoat's/Horizon Hobby's part.

While Lexan is one of the strongest, and most indestructible, plastics made it it has other characteristics that area, most definitely, NOT complimentary to bring used in a boat hull...especially one as thin as that is an RC Boat. Even with the additional internal bracing (which is also plastic...and, a more flexible plastic, at that), is impossible to completely remove the 'flex' inherent in thin Lexan. Compare the thickness of the BJ42's hull against that is the SonicWake, and you'll instantly notice the difference.

Regarding the hopping, while it's probably safe to assume the great majority of this is attributed to the hull material, part of it could be attributed to a weight-balance problem. I know some are trying to 'resolve' this through adding weights and/or moving electronics further forward...but, did to the flex of the Lexan, to be completely honest, I don't foresee any of these 100% removing the hop. Adjusting the strut could help more than the other two methods, but the song the weights, and adjusting the strut, will probably help the most. I say this, not as someone overly familiar with FE boats (I've only been into FE for about a year), but as someone with a familiarity of plastics.

As for me, I've decided to NOT get the BJ42.


~ More peace, love, and kindness would make the world a much better place

[alvinm]

The problem with me is that I like ANY new boat that shows up at the hobby shop..lol Now I'm anxiously awaiting for the Impulse 32 (and no Lexan!)

[ACKopter]

Okay, yesterdays maiden went fine although slow. Never went over 75% throttle as my location is not ideal if flip the boat (narrow section with unexpected boat traffic) Anyway as others have pointed out the 42 was a little bouncing and I was running the drive quite shallow in hopes of reducing the hop but no dice. Could someone explain the balancing aspect, I did it in third of the hull length from the back (should I be including the drive for this measurement?) and after adding 7 ounces up towards the front the boat is pretty nose heavy. JonMar put 200 g up front and that is wayyy more than my 7 ozs. Going to give it a try in a more open open area today and see how it goes. If im comfortable I'll let er rip a few times and see how it goes.

[UpliFT-RC]

Going to start out with 1oz in front of the ESC

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.