Newbie new build delta force 26"

[Brushlessracev]

Well i did my research before build a boat. Been doing 1/8th scale and 10th scale racing for many years. I am starting with a delta force 26" hull. 540 11L 2,326 RPM / Volt 5mm Shaft Motor. twin rudders. i purchased a Hobby wing 120 Pro speed control i do not know how good they are but the castle creations was out of my price range. i am going to run 2 x2s in series so 4s. going with a 40mm x 2.5 pitch prop by proboat. I put up some pics of my build when i get started.

[Make-a-Wake]

I would think a 13L or maybe a 12L would work a bit better.............just my opinion.

[driftah]

ummm twin rudders?

[JMSCARD]

Single rudder for sure... everyone on here runs single rudder df's for a reason.... and also I agree with the 12l or 13l.... on a 120 amp speedy you are gonna be pushing that 120amp speedo hard... the 12l and 13l would be less heartache......the 13l would give you more room for prop selection and ride attitude error....

[rearwheelin]

I would have gone with a 10xl and 440x 3 blade on 4s. . Go with a single rudder too.

[Jesse J]

I ran a Proboat motor (1500KV) and got her into the 50s. single rudder fan here too. I was using an x640-642. that low of KV even on 6S didn't even make the hydra 120 sweat.

[Brushlessracev]

I would have gone with a 10xl and 440x 3 blade on 4s. . Go with a single rudder too.

Wouldn't a duel rudder give you more cooling and more control. i know its more drag in the water though. 25" mono is going to be very light 11l i think is going to be plenty i could always go down a prop size to lower the amp draw. 12l and 13l draw more current anyway.

[Jesse J]

Wouldn't a duel rudder give you more cooling and more control. i know its more drag in the water though.

The point we are trying to make is that you don't NEED more control. You said it yourself, its light and small, and will turn so fast your head will fall off - with just one rudder and good turn fins.

25" mono is going to be very light 11l i think is going to be plenty i could always go down a prop size to lower the amp draw. 12l and 13l draw more current anyway.

Well, we all have that "lets make it go faster" urge and the lower the KV you have the lower the amp draw, period. Where did you get the information about the 12/13l drawing more current? are you talking about the amp rating for the motor? If so see this chart.

[Brushlessracev]

The point we are trying to make is that you don't NEED more control. You said it yourself, its light and small, and will turn so fast your head will fall off - with just one rudder and good turn fins.


Well, we all have that "lets make it go faster" urge and the lower the KV you have the lower the amp draw, period. Where did you get the information about the 12/13l drawing more current? are you talking about the amp rating for the motor? If so see this chart.

I was wrong in the last post the lower the turn motor the higher current draw. LOL the duel rudder setup i think was a good idea. run twice the cooling and have better control(turn better in either direction) some jet skies do this. my boat is not being built for racing but just fun. should turn on a dime.

[Jesse J]

If you want more cooling, you can also do this. I like these a lot. I know it may seem counterintuitive that one offset rudder will only turn good in one direction... but I can say, as many on here, that this boat is probably the best handling 26" beast out there and it WILL turn great on one rudder. Now, if you like the looks of two rudders, then that is a totally different issue and if so, then go with it!

[wparsons]

Dual rudders won't give you more control, it will just add drag and slow you down.

[Brushlessracev]

Dual rudders won't give you more control, it will just add drag and slow you down.

i know it will slow you down that not why im going with 2 rudders i just like the looks of it and give me another place to pic water up from for cooling. was thinking about 2 screws too.

[Make-a-Wake]

Quote Brushlessracev - "my boat is not being built for racing but just fun. should turn on a dime."

If its not built for racing then why wind it up and draw big amps and higher heat with the 11L?
You will limit your propping choices..............plus with the added drag of twin rudders, you will really be straining your motor with large amp draw...............and again, more heat.

[Brushlessracev]

Quote Brushlessracev - "my boat is not being built for racing but just fun. should turn on a dime."

If its not built for racing then why wind it up and draw big amps and higher heat with the 11L?
You will limit your propping choices..............plus with the added drag of twin rudders, you will really be straining your motor with large amp draw...............and again, more heat.

everyone has a opinion! it is my boat i will build it the way i want it. thank for the info i will take it for consideration.

[Jesse J]

i know it will slow you down that not why im going with 2 rudders i just like the looks of it and give me another place to pic water up from for cooling. was thinking about 2 screws too.

If you are going twins, you may want to think of ordering up a special two motor mount and throwing in some rails spaced at 4". It will be tight, but no reason not to try it! I am working on a twin Triton and drew up a motor mount for Peter Zicha. He took the drawing and coded up his CNC lathe and spit me out a killer mount and for not too much.... it should be here any day.