Cavatation??

[HOTWATER]

Cool Rooster tail B-DAWG! She looks good!

-Kent

[RPC1]

X632, Y534p, X435, X438. I would try the X438 or the X632. The X438 would be better to get your boat out of the water. I have a 21" Scat Cat with a Feigao 380Xl on 3s with a GrimRacer 36 x 55 http://www.offshoreelectrics.com/pro...od=dh-aqub9700.

[Jeff Wohlt]

Bigger motor-- L series around 2700 kv, bigger Dia prop (438), pull trim plates all the way up to start out with. Install 1/16 wire drive...run 3S and at least a 90A ESC and fly.

Should be ballistic.

[M.M.]

theonly eason i am running 3s right now is because of the motor. When i get my 540L or XL i plan on running my 5000mAH 2s in series. So what Kv motor would work well with both sets of batts?

[Jeff Wohlt]

You are just asking too much out of the 380. The 540L would be great and if you are running the 3S2P then you should be fine as well even with the 540. The reason is the 438 is still pretty small for the hull yet the 540 will have no problem spinning it with much more torque. Probably can move to a 440 after you see how the runis.

It will boogie and then you will use your tabs to get it to stay on the water and not have any chine walking.

With 4S you will want to stay around 2300 KV or less. Same prop....438 but the 5 series is a good one.

[Punisher 67]

Peter do you have a picture of a propper starting point for turn fins....I have mine angles back a little bit...should they be way back?

No I don't sorry but from his picture the turn fins look to be where I would have them also , I am no expert but the way I see it the more they dig in the sharper your turns , angle-ing them way back may lessen the boats turning ability . once again I am no expert here . setup at times is still a mystery to me........

[785boats]

M.M.
I too have this little Hull & have put it through a few different setups of motors & props after ditching the original 2700kv out runner that came with the boat from R2 Hobbies. All on 4s lipo.
Sv 27 package with X645, Ammo2300 with X440 & Grim racer 40mm x 52mm/3blade, Feigao 8XL with X645.
The best speed of 45mph was with the Ammo & the Grim racer prop.
watch the square socket in the stub shaft with increased power plants. I've split three of these & the flex spins in the socket. Two in this boat & one in a cat.
I've replaced the stinger in this hull & soldered the one in the cat which is the same strut setup as yours.
This is what seems to be the best setup in my boat if it's any help.
Trim tabs level.
This hull has a hook built into the hull so use a straight edge long enough to reach the front of the hull or you will end up with the tabs angled down.
Strut angled up about one, to one and a half, degrees if you have the batteries beside the motor.
Turn fins.
With the hull sitting flat & level on a bench The tips of the fins are about 3/8" off the bench.
This keeps them out of the water on the straights & dips them in on the corners.
Here's the boat with the Ammo in it on an X637 prop.

http://www.youtube.com/watch?v=WNhjkAXMxlM

Hope this helps a bit.
Paul.

[HOTWATER]

Hey Paul! That thing is dialed in just great! Very good advice on the subject too!

-Kent

[M.M.]

Thanks for the info Paul.

[785boats]

No problem M.M.
Thanks Kent.
Of course every boat is different & you'll still need to play around with the settings a bit.
All the best.
Paul.

[M.M.]

How would this motor work on 3s and 4s? With a turnigy 120A ESC.

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6678

or this?

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6679

[ozzie-crawl]

wouldnt touch them motors would go with the proven ammo 2300 on 4s or if you want a real missile a 8xl

[M.M.]

Really? One of the ones i posted was a 9xl. I have heard that they are good motors, and the only thing you have to do is glue the endball on.