More boat speed

[Pau7060]

Hi I have a Joysway Sea Fire. I am having fun with it, would like to up grade Motor Prop and ECS. I have read the post about this subject. But being a Ex Dragbike Racer. I had always built in my bikes, with final level I wanted in mind. So I am asking what would a hot set up for this hull Motor-ECS-Batteries. Paul

[ronarcweld]

That's funny I'm an ex drag bike racer myself. You don't here that every day. Had a 1200cc 1980 Z1R 1000 chopped dropped and raked into a two hundred mph suicide attempt. Lol. I'm not familiar with your boat can you give me some hull info and how fast are you looking to go

[ronarcweld]

I looked up your hull and not sure if this boat is gonna handle a crazy hot setup. Can't tell how strong it is or if you have enough room for 3S more likely you want to go with 2S how much clearance is there for a bigger motor? Looks like it might be crowded in there. What's it got now? What speed are getting now?

[turbovr6jetta]

Thats awesome!!!! Im not an ex drag bike racer but I wish I was. I only hit the drag stip a half dozen times but it sure was a thrill! I was in the low 10's on my zx14. Its too bad I got rid of the big clunky pig.

I wish i could say something benifitial about you boat. Unfortunatly I dont know anything about it. Well imdont know anything about any rc boat but I hope you get your answers and go fast

[Pau7060]

Hi Ron and Turbo Hull seems rigid, Motor is a Joysway calls there Motor a 3656 Brushless . The Class I ran my Bike in was Top Gas that's a 8:20 index. Bike ran 8:04 162 off the gas at the stripe in las Vegas with me on it . It had a Trac-Dynamic's Chassis with 175 shot of NOS on top of the 175hp the engine put out it was a scratch build bike. There does look like there is room for a larger can and has length space. If need to do some mod's I feel I can handle that for space my long time Pro Surf Board Builder buddy can lend a hand with the hull. I have already ripped the rudder off the back of the transom my tunnel hull hitting a rock. The little pond i run the small boat in has not a lot of depth. And some one tossed a large rock, I got that done with reglassed and reinforced and back in the water. I had already run 3s batteries. in it, I have built two Quad and one Hex copter's from parts . Thank guy's maybe some other fella's will chime in. I realize ARTR boat's are not the most popular I have to start some were.

[ronarcweld]

Well first things first your hull is about 26" long and around 13" wide. Before power system your going to have to get that hull ready to go faster. I know you think its stiff but that boat wasn't designed for really high speed so your going to have to stiffen her up a bit. One layer of glass or CF with epoxy inside bottom and up the sides. Even the top lid. The dead space in the front you can cut some foam flotation and get up in there. I would cut a plate of 1/8 plywood and epoxy inside the transom. Also upgrade the drive to a 3/16 flex and brass stuffing tube. Then the battery area will need some strong support to hold it all in place when it tumbles at speed. Do all this first then work on the top hatch locking and seal. Now you have a great base to build on. Making this thing fast without these first steps will surely lead to no good things for your boat. One that's all done we can see about power systems. Also get a rudder that has a sheer pin (plastic bolt) so if you hit something again your trans stay put and the bolt breaks instead allowing the rudder to simply flip up.

[larryrose11]

ronarcweld is likely correct. If your going to strip everything out, just go all the way and pull all the parts out, down to a bare hull. Wrap the exterior in painters tape to protect it, and reinforce the inside with some CF Cloth / epoxy, and reinforce the transom too. Then go to town!!

As far as the motor / prop / ESC is concerned, I found this:
http://forums.offshoreelectrics.com/...-Super-upgrade

[Pau7060]

I have sheets of Carbon Fiber Sheet in differrent thicknesses . Could I Epoxy pieces of CF sheet in transom area ? . I could turn over this part of the project to my buddy Joe the Pro Surf Board Builder. Do you heat soften the Stuff Tube so it can be bent. I do have a tube bender I use for bending Nos hard line out of Stainless 3/16 to 1/4" . Sound like a fun project, havent rally like the battery tray's in first place. More power Scotty!!

[ronarcweld]

CF sheet is fine just laminate together with epoxy scuff them up to take the shine off them before you glue them together and press them with a clamp. Use like 120 grit to scuff them up before gluing. Make the cf lam around an 1/8" thick. You don't need a bender when you bend it make long sweeping bends not tight ones take care to make a nice smooth transition. If you use a bender it will most likely be to tight of a bend. Also where the shaft comes through the hull you can use a small piece of CF as a doubler or just pour epoxy around it to build it up a bit around the shaft.

[ronarcweld]

Oh forgot I wouldn't use heat its not that strong or hard to bend.

[Fella1340]

If your going to reinforce the hull read some of the build threads to get an idea what your getting into. If your not into stripping the whole boat you could still make it stronger. Carbon fiber plate for the transom is a good idea, anything over 1mm or so should be sufficient. If you don't go to thick you won't have to replace the transom bolts. Running some cloth accross the transom tying it to the sides and floor of the hull will make it that much stronger. Running a one is
Inch or so strip of Cf cloth or fiberglass around the hull upper and lower joint seams will help a lot. Pour some resin and chopped carbon fiber or fiberglass into the sponson tips and accross the front of the tunnel, maybe an ounce or so in each tip plus enough to go accross the front. This will give the hull considerably more strength. They like to open up across the seams at the front of tunnel and sponson tips. This is an option if you don't want to tear the whole boat down and start over. If you have more Cf sheet you can make some battery trays, adhering them properly to the hull floor will add strength as well. It would be better if we knew how far you wanted to go. Y

You will want to read through the build section and get an idea what your getting yourself and your friend into. Are you wanting to get into new motor mounts, servo mount, changing out the aluminum stuffing tube, upgrading the flex shaft and strut to 3/16" (if it's not already). Decide how far you want to get into the boat and go from there.
What's the kv of the stock motor? How much faster do you want to go? How much do you want to spend? What do you have for batteries?(make,mah, c rating) Are you willing to buy new batteries if needed? The cost can climb very quickly. Good luck!

[Pau7060]

Hi I talked to my Carbon Fiber guy Abe today . Lucky for me he a little guy with much talent. With parts mentioned before, that is as far as I want to invest in this Hull.The batteries I would need for the motor will work in my Hex Copter. So It's just another set of Batt's to buy . This not something I want to take too Legg LAKE or some place like that, that's way up the FWY from me. None those mod's intimidating. Being I was so heavy in Dragracing redo-rebuild-new-builds are just a standard deal. Building the bikes was the most fun, riding and racing was the payoff on what you did. I am just going to run it at local Duck/Golf Course Ponds. There's is also a large Salt Water Lagoon If I really want too destory some stuff It's all fun. Ron & Larry gave me some good tips on things to do, thanks 1340.

[Fella1340]

Still need those questions answered. What kv is motor. Do you want to stay at 3s? 4s may be better, 2-2s batteries each side of motor. The pictures i have seen show 2 battery trays, what amp and voltage capability is the current esc? it wont be hard to make it fast, keeping it on the water is something entirely different.

[ronarcweld]

Yes keeping them on the water is a chalange._20141205_185608.JPG10192014 469.jpg

[pistol18]

That blackjack photo is awesome