Blackjack 42" | 6s and 8s speed runs, plus a couple crashes, bc that's what this boat does! lol
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- čas přidán 13. 09. 2024
- Testing and tuning my Proboat Blackjack 42". First ran on 6s to test stability, and figured I'd get a speed run. Finally moved up to 8s when it proved stable enough. I have quite a few wheel weights in the front of the boat to try to keep the nose down, and I've found that the prop strut likes to be down (at least on my boat). I have no idea how some people are hitting 62 MPH with this boat "stock", but it seems mine just won't do it. Next time I'll put my Octura x450 prop on to test. Anyway, enjoy and please consider subbing!
![BlackJack 42" and Spartan blow [drunk] college kids away on the 4th of July, + a Spartan crash!! LOL](http://i.ytimg.com/vi/g0t-H_oBohs/mqdefault.jpg)
![BlackJack 42" and Spartan blow [drunk] college kids away on the 4th of July, + a Spartan crash!! LOL](/img/tr.png)
I run a 10 foot string line with a empty capped plastic bottle behind my rescue craft, make one loop around boat to catch rudder, pull in the boat, i dont flip my gas boat so i pull it im by rudder. Upsidedown you still need a catch point. Way easy to recover this way. There is a video on my channel. Good running and keep tuning.
Good idea! I've seen others using similar strategies. I'll def give it a try next time. 👍👍
I still enjoy the Sonic wake for the self leveling. It's that peace of mind.
Can't blame you there!!
How's this treating you two months later? I ended up keeping my m41 and not getting the sonicwake. I watched a bunch of videos of people having issues with their new boats and figured since mine's dialled in why go through all that again. Anything you'd change on the BJ42?
@@Cynocehali hey man! I've since carved out a lot of foam in the nose, thus sliding my batteries forward. I have two of the 9000mah Zeees now. I also have a 4818 3 blade prop. It took some adjusting, but I've got it reliably doing 70mph now with minimal cavitation. The biggest thing I can recommend with this boat, as soon as you get it, is correcting the CG. It's too far back, which leads to blow overs. They can still happen even when moving batts forward, but they're few and far between. 👍👍
@@WeissRC Could you please explain what you mean by "CG"? Center gravity? Anyway nice video and great boat!
@@peternaake2032 hello there sir! Thanks for the comment! Yes, by CG I meant center of gravity. 😁 Let me know if you have other questions! 🤙
Sweet
Thanks Ken! 😎👊
Nice of those guys to wait until you were finished showboating lol.
I installed the quick releases on my blackjack42 I love them well worth the money saved alot of time👍😀.
Awesome!! Where did you get them from? Definitely a great idea. 👍👍
Not sure I like these big plastic boats... but I do like the rescue boat. Just ordered one. Hopefully can push my 820mmm fiberglass boat to shore.
Great rip with that boat. And awesome recovery.
Thank you sir! 🤙🤙
That gps show 3 digits? Cause i see that on ALiexpress but i see only 2 digits... that's not showing anything past 99kmh?
That GPS probably only went to 99MPH. I don't have that one anymore, unfortunately (it broke). 😂
Why are most of these vids solely focused on speed of boats cars, ect, How bout a course designed for acceleration, turning, braking and so on, you want boat for speed use an outrigger, The speed runs are getting a wee bit boring, Carry on
Nice passes and good recovery with the jet jam 👍
Thanks man, appreciate it!! Just kind of documenting the journey. 😝 I'll keep getting her more stable. 🤙
It's called thrallo control you understand.
I personally believe the way it runs is due to single prop. My traxxas m41 is the same way. It took me months to figure out the setup and it still doesn’t run as smooth as my twin prop boats
You could very well be right. Several people are talking about converting their BJ42 to dual drive, so if and when they do it'll be interesting to observe the change in stability! 😎
@@WeissRC I really deep down believe it will cure it. But for the price of doing all that after buying the boat you might as well just get the geico 36 twin
@@jaycevessier7554 wholeheartedly agree my man. I considered the Geico 36, but as you said the price drew me to the 42. You get a lot of bang for your buck. 👍
Propellers, believe it or not can cause all sorts of things. Some create bow lift and some run flat, what it looks like you need is a transom lifting prop to help plant the sponsons and remove the bounce/porpoise. Not sure if they make cupped props for rc boats but they are best of all worlds as they increase top end at speed but have a low enough pitch to get out of the hole quickly.
You're absolutely right. I was out with it yesterday and had my new 1917 prop on... Of course it ran like a dream and I didn't get any video. 🙄 LOL. Going to try to get out and video it today. 👍
@@WeissRC Also, the "X dimension" come into play with all boats. That is the relation of the prop shaft to the bottom of the boat. the bottom of the boat should divide the prop shaft in half. At least on V-bottoms, I would assume the same for a cat. The prop needs a clean flow of water but the closer to the surface, the less drag there is from the shaft. Don't now if you can adjust and play with that but it would also make a huge difference. Lastly, scuffing the bottom creates cavitation which reduces surface friction and increases speed. Waxing the bottom really doesn't do much. Just a few ideas, It is more about the fun than the top speed!
Hey man what batteries are you running in this boat?
I was running Zeee 100C 9000mah 4s packs in this run. 👍👍 This year I have some SMC 150C 11300mah batts to try! 😎
@@WeissRC that’s a serious battery!! Could you send links to those batteries?!
@Ian Laird www.smc-racing.com/index.php?route=product/product&product_id=686
There you go sir! 😁
I've noticed on my boat that you can hold it at full throttle without bouncing if you ever so slightly turn the steering to either side. The problem is you're also scrubbing off some top end speed by doing so.
Excellent point, and I have noticed this as well!! Trying to avoid it to achieve higher speeds, but you are absolutely right. 👍👍 Sometimes worth it for additional stability. 😁
The oscillation is caused by uneven surfaces on the step part of your hull as air travels under the boat it raises and falls as the air pressure passes under the hull. On the fiberglass hulls we sand the two surfaces perfectly flat and true but on the 42 I’m not sure how we are going to fix it as mine has the same porpoise 🐬 affect as yours . Great vid hit on some good points👍 keep the vids coming and post a fix if ya find one . Keep on prop-in on.
Awesome man, love to hear from others that own this boat! 🤙 Definitely a learning curve at this point, and I'm following along with others as far as what they're doing to gain stability. I'm not one to keep secrets, so as soon as I figure anything out I'll have another vid up!! 😎
I would suggest scuffing, then epoxy/jd weld the surface and sand it flat. used to do the same thing on my abs mono hulls, also used to build "pads" on them to really get em running on the edge of disaster lol.
Wow amazing boat bro 🤜🔥🤛
Thank you sir! 😎🤙
I just started bluepriting my hull. On the 42. Stop that oscillation. My last 2 steps were bad. Real. BAd.
Could you elaborate a little? What do you mean blueprinting, and what last steps did you take? I might be a little behind! Definitely going to check out your channel again after work. 👍
What are you using to weigh the boat down? The bounce you're experiencing is probably due to the weight.
Wheel weights. I'll get a video tomorrow... The bounce is totally gone with the ABC 1917 prop. 👍
I dont get blow over on mine 3 blade strut is at factory and im on 2 4s 10000 mah battery and mine gets about 68 mph
@Warlock485 nice man! Yeah I've got my batts all the way forward now, and even carved out some of the foam. It runs 70mph and only blows over if I catch a bad wave or get unlucky with the wind. 😂
I have this same boat and I agree withe the power up some times it works and others it don't weird rite?
Absolutely man! I've since got mine running A LOT better after this video and hit 70mph. See my response to your other comment... It's definitely about weight balance and strut angle! 👍👍
I’ve gotta get me a boat!
And I've also added about 6 oz of wheel weights to it to try and keep the front end down but it still tries to flip what else should I do here trim tabs?
For me, the trim tabs really killed the boat's speed and ability to plane. I carved out about 3" of foam from the bow and slid my batteries way forward. This shifted the CG of the boat significantly. The other thing to adjust is your strut angle. Have you tried adjusting your strut all the way down? Some even file the top slot of the strut mount, so they can position the prop even deeper in the water. Let me know man!! Good luck. 😁👍
@@WeissRC Thanks for the tip to bring the lipos forward in the foam. Together with a big curve, my blackjack now drives very well.
Greetings from Hamburg, Rudolf
@@Rc-Heizer Anytime sir, glad I could help!! 👍👍
Yeah...my blackjack 42 is pain in ass..6s flips 8s flips.... spectrum reciever transmitter suck have to rebind almost everyone you unplug battery
I get your frustration man, I really do!! It was a game changer for me when I carved out some of the foam so I could slide the batteries farther forward, moving the CG of the boat forward. I also run my prop strut as low as possible now to minimize/prevent flipping. Boat actually runs pretty well now, but you definitely have to drive it (no just laying full throttle for days at a time)! 🤣
@@WeissRC .
I'll give it a try taking some foam out. I have the batteries all the way forward now but you can barley get hands in there to get 2 out of 3 straps on. I used some hardcase 4s zee lipos 6200mah 80c. I want to get my 4s CNHL 9500mah in there they are really long batteries might help weight balance
Throttle control keeps the purposing down.
True, but I'd like to get her tuned to go wide open with minimal porpoising. 🤣😝
@@WeissRC I've been following the black jack and it appears they are unstable. I run a m41 wide open with the batteries full forward. Probably need some weight up front
@@FaithinThoth agreed. I have quite a bit of weight in the nose. Currently using wheel weights. Need to experiment a little more with them! lol
I run the batteries full forward too. I have some bigger heavier batteries I've run in the front and it can't get on top of the water. Need more Ballance.
On 6s vs the spartan on 6s which one is faster
Great question!! I've never GPS'd the Spartan, although I plan to soon!! I was going to the last time I was out, and then it took a nasty crash ripping the entire center motor/ESC assembly out... I fixed it and she should be good now. 👌👍
How much weight do you have up front?
Good question!! I will figure it out and let you know. 👍👍
Haha learning from the best, recovery boat and all. Let me know when u ready to run with the big boys lol
Listen to you, Mr "I got you into boating"! 🤣😜 Hell yeah man... I want to try some of those props you have! The Spartan is also doing some weird stuff lately that I need to iron out. 😭 LOL
@@WeissRC she looking much better at the end there. Matches up well with the Pursuit I think they both in the 50-55mph range
@@naveda08 definitely man! Trying to find that balance between weight in the nose and strut angle. 👍
@@WeissRC I think the trick will be the prop. Something that lifts the back(transom) like a rigger style prop. The Octura X line of props is technically the opposite of what you’d want.
@@naveda08 Yeah, the Octura had worked well in the Spartan so I figured I'd give it a shot... I wasn't very scientific about it. The 1817 is supposed to do fairly well, too. 👍👍
...........try it with the earth rotation, not against it......!!!
Spartan or 42” pro boat on 6S. Which handles better?
Good question! At higher speeds I would have to say hands down the 42 does, given the wider stance and catamaran design. However, at slower speeds I'd say the Spartan has the ability to carve a tighter turn. 👍 The V-hull is inherently less stable, given it's more narrow footprint and smaller contact surface with the water.
@@WeissRC Do you have any Chime problems with the 42? Looking at getting one and possibly a rescue boat, still not sure what would make a good rescue boat. Thanks for responding back to me. 👍🏻
@@Kolsch221 oh you're very welcome. No, the catamarans typically have no issues with chine walk. It would be a good recovery boat given its size!
@@WeissRC I have a spartan. I use my kayak for the recovery boat. I need find a good rc recovery boat.
@@Kolsch221 yes, it certainly makes it much easier. I use a Proboat Jet Jam for recovery... It's small, but believe it or not retrieves even the BJ42 when it flips! It has a cone you can attach to the front. 👍
That airboat is loud
Indeed sir... And I knew it would be. He just got it though, so I wanted him to enjoy it. 😝
Just paint tire weights black and put them on the front of the boat
Hahahahaha there you go! I actually got the boat running much faster and more stable with the ABC 1917 prop. Sadly didn't get any video this past weekend!! Definitely will soon. 👍👍
I dont think i could get into boating lol
🤣🤣🤣 why's that? No judgment, just curious... I realize it's not for everyone.