51" Mono - Castle 2028 build

[Jacked1]

I think it will be fine since it is attached half way out on the control arm. That would be like doubling the pushing power to the rudder and cutting the rang of motion in half.

[Make-a-Wake]

Just test fired it all up! Servo works well, ESC powered up with a huge 10s "crack" when connected. Going out in the morning.............vid camera charging!

[crrcboatz]

one more time, you will have issues with a servo that only has 140ozin of torque on a 51" 15-18lb boat.
u guys that have been building smaller boats have no idea what a large one requires.
Oh and extending the position of the steering rod on the servo arm has NO effect on the torque of the servo. IF that was the case everyone would be buying 1/2 the needed torque!!


I wish u well tomorrow.

[millzee]

Just test fired it all up! Servo works well, ESC powered up with a huge 10s "crack" when connected. Going out in the morning.............vid camera charging!

Good luck, I'm looking forward to seeing the footage

[Jacked1]

one more time, you will have issues with a servo that only has 140ozin of torque on a 51" 15-18lb boat.
u guys that have been building smaller boats have no idea what a large one requires.
Oh and extending the position of the steering rod on the servo arm has NO effect on the torque of the servo. IF that was the case everyone would be buying 1/2 the needed torque!!


I wish u well tomorrow.

Torque/distance = force. It is a fact.
I have had 10 45in boats or bigger over the years and just as many ME classes with torque calculations You don't need to laugh at me for stating a fact. I was just saying 128/.5=256. Not mad just saying the force (not the torque) in the steering rod between the rudder and the servo arm will be more.

[Punisher 67]

I am really looking FWD to seeing the footage also , I am curious on how well the 2028 propels this hull ( how fast )

[bill34207]

I am really looking FWD to seeing the footage also , I am curious on how well the 2028 propels this hull ( how fast )

The 2028 is a beast. It pushed my 54" Arapaho to 65 on a small prop capable of 9 laps on a 1/6 mile course where the only thing that got warm (hot) was the esc caps. Those got hot from a lot of reduced throttle running trying to keep it from blowing over or barrel rolling.

[Brushless55]

Just test fired it all up! Servo works well, ESC powered up with a huge 10s "crack" when connected. Going out in the morning.............vid camera charging!

[Jacked1]

I am really looking FWD to seeing the footage also , I am curious on how well the 2028 propels this hull ( how fast )

Ditto!

[Jeepers]

I have never built a large boat before but I am going to have to agree with crrcboatz on servo strength for your hull, while the lower torque servos seem to work great, I have found increased control and cornering by switching to higher torque servos.



In my VS1 and Cobra tunnel I am using Hitec 7955TG (333oz@6.0v) with receiver packs, using these servos I eliminated some handling issues that I was having, that I could not seem to get rid of, all my boats now run High Torque servos.

[Make-a-Wake]

Here she is!

Ok, the disclaimer stuff:

4" chop and high wind, wasnt going to flip her on the first run. Got to maybe 80-85% throttle a few times. Limited my first run as should be done with a new boat.

The torque is instant and huge. At 1:08 the acceleration pushes the whole 18lb boat out of the water. I got the prop right i believe.....x457. Temps on motor 121*...ESC 115*....Batts 95*.

I took so much stuff/boats with me that i forgot my GPS............no biggie, in the next few days i'll video a long WOT run on glass at the other lake!! She's much faster in person than in the vid due to the sheer size. Bet she hits 62-65 on glass.

[Jacked1]

Looks fantasic! Looking forward to some gps!

[bill34207]

C.mon scorp. Where's your sense of adventure. I managed to both barrel roll and flip mine on it's 1st outing.

Looks good on the water and might be handling better than my Arapaho did. With the chop it's hard to tell but you did at least keep the prop side down. I noticed that yours has the same growl that mine did on it's 1st outing. Hope that's not an omen of a an upcoming prop shaft snap.

[millzee]

well done, look's good. I look forward to seeing the wot glass run.

[wparsons]

u guys that have been building smaller boats have no idea what a large one requires.
Oh and extending the position of the steering rod on the servo arm has NO effect on the torque of the servo. IF that was the case everyone would be buying 1/2 the needed torque!!

Extending the servo arm reduces the amount of torque being transmitted to the to the rudder, just like running a bigger pinion gear on a car/truck.

The servo still produces the same amount of torque, but since you're increasing the distance traveled you're reducing the amount of effective torque at the end of the arm.