Finally cooked my stock esc BJ 26

[kendt]

Hmm well i've seen a ul-1 out of the box and i'd hardly call it stupid fast. To each his own i guess.

[Heaving Earth]

33,300-RPM's unloaded, aka not spinning the prop. That is a very serious amount of RPM's for a non race boat.



30,000rpms is pretty much the upper limit for boats. You said your committed to 6S

.

Neither of these statements are true.

[jstolz]

Thanks for the input. I was surprised how long the stock esc held up also. So I could probably run my stock motor for now and go with the seaking 180. I'm currently running x642, but I would like to try some 45mm props.

So lower Kv equals lower rpm? This in turn puts less load on motor or esc, or both.

I wouldn't go up in prop size. As it is, you are pushing the motor. If you run a 45mm prop, you are going to probably loose both the motor and the new ESC you want to buy.

[Alexgar]

Neither of these statements are true.

Some guy out there run 50000 rpm in sport saw boats just be willing to take some losses in the electronics department . I ran a x442 on my fastech on 6s with the pb 1500 and 5s with a cc2200

[iop65]

it's a rather small boat so you will need rpm's and not torque to make this go fast and controlable

choose something between 32.000 and 35.000 rpm's and max a 42 mm prop and it will work

so if 6s : around 1400 - 1600 Kv
a leopard 3674 will spinn your 40-42mm prop (would not go bigger on a 26 inch cat)

[CodeRed225]

Well, everyone seems to have their own opinion that's for sure. Thanks to everyone for all the input. I ordered the seaking180, the program card, and a leo 4074 1650 Kv. I'm sure some will think its to much for me but we will see. I'm gout to start stripping my hull and do some reinforcing to it while its all apart.

[Heaving Earth]

Well codered, that setup will work. Maybe a bit high on the kv, and the can size is overkill but should do ok. Just keep your prop small.
I run a castle 2200kv on 5s in a sport boat. Works well, lots of rpms, I just use a small prop

[kendt]

1650n kv is perfect for 6s. That motor will make that boat rock. It will add a bit of extra weight which can help to stabilize the hull. You will love it for sure. I,m not sure why everyone always claims you cant go higher than 30,000 rps with a boat. You can go as high as you want provided you understand the possible complications that may arise and are willing to take the risks. I was told on another forum my ts3 would never handle 6s. Not only does it handle it but with a 3659 1900kv motor it absolutely flys. I swapped the motor for a lower kv version only because there isnt room in the hull for an esc that is better suited for the high current spikes.Otherwise it would have stayed as is.

[Skullcracken]

Some guy out there run 50000 rpm in sport saw boats just be willing to take some losses in the electronics department . I ran a x442 on my fastech on 6s with the pb 1500 and 5s with a cc2200

True. And be willing to strip the hulls on those slower boats or damage them flipping. 4s is plenty on that little boat.

[CodeRed225]

True. And be willing to strip the hulls on those slower boats or damage them flipping. 4s is plenty on that little boat.

Well, I'm going to re-do my hull. I have some stress cracks that need to be fixed and I am going to do some reinforcing with fiberglass on the inside. Never done this before, but I'll give it a shot. Why do so many think this is to much for this little boat? Isn't that part of the fun, the challenge of making something custom and awesome?

[Heaving Earth]

Well, I'm going to re-do my hull. I have some stress cracks that need to be fixed and I am going to do some reinforcing with fiberglass on the inside. Never done this before, but I'll give it a shot. Why do so many think this is to much for this little boat? Isn't that part of the fun, the challenge of making something custom and awesome?

Yes it is part of the fun, only thing is many people here have already pushed this hull to its limits. Having too much means the boat spends ALOT of time upside down. You can certainly try tho.

[CodeRed225]

Yes it is part of the fun, only thing is many people here have already pushed this hull to its limits. Having too much means the boat spends ALOT of time upside down. You can certainly try tho.

Understood. Worse case I put the hull on the shelf move my setup to a new hull. I'm willing to put in the work, even if I can't keep it on the water.

[kendt]

If i listened everytime someone said it wont work I wouldnt have had half the sucess or fun over the years with my hobbies. If someone would say " i tried that and it didnt work for this reason or that reason" then I would def take notice. But it drives me nuts when people say you cant do it just because its something they wouldn't (or couldn't) do. I run boats ranging in size from 29-34 in all on 6s. I've only had one melt down from over proping a motor and burned both it and my esc up. My boats are fast and fun and im always looking for ways to push the performance.

[Heaving Earth]

Nobody is telling him he can't give it a go. Maybe he will come up with something nobody has before. I'm just informing him of some of what I've seen over the years.
I tried overpowering a ul1 last year, and thought, I'm gonna prove to everyone that you can make this boat go almost 60 and be stable. Guess what, it wasn't. It spent lots of time upside down, the running gear got destroyed from flipping at 58mph, etc...
I did all the known modifications to improve it plus some extras. Sometimes it is wise to listen to those who have been there. That's all.

[Alexgar]

have to agree and disagree. When i was new to brushless power systems in boats if i would have listened to the advice of some of the mofe experienced guys it would have sav me over 1000$ in escs, but if i listen to people say i couldnt or it wasnt a good idea most of my boats would have become boring long ago and i would have gave up on FE boats. So i guess i would say start out safe until you have the understanding of what you are doing then push them over the top. Not meaning to offend anybody just my opinion