Help me with my first build: Delta Force Explorer 36 cat.

[RuntheraceAMC]

I just shattered the hull on my BJ24 and now I want to build my first boat. I've narrowed it down to the Delta Force Explorer 36. I'm in love with the sleek look and smooth running I've seen on YouTube. Besides I believe a lot of my electronics are well suited to this hull. From what I've read the DFE 36 is not the best in the corners but great for speed runs. Considering that I am just sport running and I am concerned about blow-overs I think this is a good fit.

the set up I want to start with is a Raider 150a, Leo 4074 1800kv, 642-645 props and 5-6s. I may try 7 or 8s and a 4094 1400-1600kv down the road if it is stable enough. I understand the transom is narrow on this boat so an inline strut/ rudder is almost a must. I would love to run dual leopards but the extra cost and maintenance scars me.

I could use help on the following issues/ questions:

Is my motor/esc/ prop combo on the right track?

Can anyone recommend a YouTube instructional video on how to fiberglass renforce sponsons and the tunnel? I want to strengthen this boat out of the gate.

How do you mount everything? Do you drill the hull and just screw everything down? Or I bought a carbon fiber plate to put down on the tunnel where all the electronics go- should I screw into that?

I like running two cooling lines to the motor and esc. I am use to doing thru hull mounted water pickups. Are there any special tips for dealing with doing this on a fiberglass hull vs ABS?

Thanks in advance for assisting.

[Fluid]

A 4074 motor is too small for a 36" hull. I'd get the TP4050/1700 or the TP4060/1750 if you plan to run 6S. The Explorer can handle larger props like an x447 or x648 for better efficiency. I would use an offset strut/rudder assembly rather than an inline.

I use JB Weld for mounting about everything in my boats directly to the glass (or CF), even my SAW boats. It holds if properly used, which means a clean sanded surface and 24 hours without moving the boat.

You don't need two water lines, just another place to leak. When you drill through the hull, be careful as it can be easy to chip the gel coat. Putting a piece of tape firmly on the hull where you drill can help prevent chips.


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[RuntheraceAMC]

[QUOTE=Fluid;674865]A 4074 motor is too small for a 36" hull. I'd get the TP4050/1700 or the TP4060/1750 if you plan to run 6S. The Explorer can handle larger props like an x447 or x648 for better efficiency. I would use an offset strut/rudder assembly rather than an inline.

I use JB Weld for mounting about everything in my boats directly to the glass (or CF), even my SAW boats. It holds if properly used, which means a clean sanded surface and 24 hours without moving the boat.

You don't need two water lines, just another place to leak. When you drill through the hull, be careful as it can be easy to chip the gel coat. Putting a piece of tape firmly on the hull where you drill can help prevent chips.

I would like to stick with leopard if I can. Can you suggest what might be enough? 4082? 4092? And what kv 1600?

What is a JB weld?

The reason why I did in line vs offset is because of the very narrow transom. No room to mount. What are the pros and cons of the inline mounted rudder?

Thanks for the tip about drilling and the gel coat.

.[/QUOTE

[Fluid]

Either the Leopard 4082 or 4092 would be fine, the Kv is fine. Depends on how fast you want to go and for how long.

JB Weld is a very strong industrial-strength epoxy. It is found in many home and hardware stores. Don't get the fast setting type.

Something like this is what I had in mind for an offset rudder, there are several options if you look around, this one is too small. Inline makes it difficult to remove the shaft and can cause wandering in the straights.

[RuntheraceAMC]

Thanks for the tips fluid

[RuntheraceAMC]

Thanks for the tips fluid

Will a raider 150a esc handle a 4092 on 5 or 6s? Planning on running a 645 prop but I have a 642 and 648

[Peter A]

Will a raider 150a esc handle a 4092 on 5 or 6s? Planning on running a 645 prop but I have a 642 and 648

Nope. Get a T-180 or SF220.

[RuntheraceAMC]

Either the Leopard 4082 or 4092 would be fine, the Kv is fine. Depends on how fast you want to go and for how long.

JB Weld is a very strong industrial-strength epoxy. It is found in many home and hardware stores. Don't get the fast setting type.

Something like this is what I had in mind for an offset rudder, there are several options if you look around, this one is too small. Inline makes it difficult to remove the shaft and can cause wandering in the straights.

Fluid,

Do you know of any YouTube instructional videos that walk you through how to reinforce a fiberglass hull? Or any threads on this forum that provide good instructions?

Should I even be reinforcing it to begin with? I'd like to make this hul last.

[Fluid]

Try a search for carbon fiber or inlay, you should turn up plenty of information. I don't know what the hull construction looks like, but reinforcing the tunnel never hurts. It may or may not help, but at least it looks cool.

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[RuntheraceAMC]

why do I never hear of anyone using turn fins on a cat? I put trim tabs on my last Cat for more stability but on a hull like this delta force I am building I would think turn fins would help it in the corners.

Am I wrong?

[grsboats]

Turn fins on a cat wlll not help too much,will produce drag i.e. loss of speed.. try to keep the C.G. right and your boat will run good.Gill

[RuntheraceAMC]

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Build progress

[Mxkid261]

Are you running this boat on 6s? What KV is that 4092? You may want to closely watch temps your first outing. Some guy here built a cheetah a few months ago with a 4082 2200kv on 4s and cooked his raider 150 first time having it out. http://forums.offshoreelectrics.com/...was-not-enough

[RuntheraceAMC]

Starting with 5s. Do plan to go to 6s. 4092 1730kv

When I switch to 6s I will drop from a 645 prop to a 642 to be safe and prop up from there. I do have a psychotic amount of cooling to my esc.
I realize I need to consider something like a swordfish 220.

[RuntheraceAMC]

Ran it for the first time today on 5s. Omg. I think I'm in love. This thing has got some serious legs. Can't wait to get out on a big lake this weekend.