Need guidance / help - What hull and setup for my kids

[LibertyMKiii]

Hi Boat wizards,

I acquired 12 boat hulls from an estate sale for a stupid low price. I am looking for advice on which hull to use and electronics recommendations. I am a total newb to boats, but have experience in RC cars. Lots of reading and I feel like I am close to kicking off a project for my kids.

The hulls obtained from the estate sale range from 2x 55" off shore mono's, to 1x 44" hydroplane, 2x 37" catamaran/tunnel hull, 2x 37" mono hulls, 1x 31" mono hull, and a few others that were smaller and easier to ship that I have already sold off. All were setup for Gas/Nitro and have most of the rigging installed. I may have to convert some from 1/4" drive down to 3/16 to get the ideal prop on there for the lower speeds I want. (the big boats have 60+mm props on them)

We would be running on a lake in the north Texas area (Lake Lavon for any locals). This area gets wind nearly every day and we can expect some waves/chop on most days. This leads me to think of larger boats? (Is that a solid line of thinking?)

I would like to run on 4s and was eye balling the SeaKing 180a due to the known reliability of HobbyWing ESCs from the RC car side of the hobby.
I am looking for 30-40 mph speeds and wondering if a leopard 4082 or 4092 motor could handle running these large boats on 4s at those speeds? (guessed I would go for a 1700kv but open to recommendations)

Which hull would you recommend for my 5 and 9 year old to operate (has the most forgiving nature for bad driving)

*As a side note if anyone is in the Dallas/Ft. Worth area is interested I only want to keep 1 boat and sell the rest. (prices would be 1/3 of normal retail)

Thanks in advance for your input/recommendations!!!

-Liberty

[1coopgt]

Pictures help.

[LibertyMKiii]

Pictures help.

I cannot seem to get pictures to load. It may be my work restricting the upload.

[LibertyMKiii]

I have decided to setup one of the deep vee / mono hull for my son. After measuring it I realized it was 41" not 37" as I thought.

It had the stuffing tube out the bottom of the boat and had wood epoxied into the bottom of the hull. Spent Saturday morning removing those wood pieces and prepping everything for an electric build with some fresh fiberglass to plug up the holes from the prior setup.

The setup will be a SeaKing 180a and TP4070 1700kv. I am planning to start on 4s with a 40mm 1.2 pitch prop.

I'll be converting the boat to run a stinger setup versus the junk that was on it as that appears to be the norm these days for mono hulls.

[srislash]

Well on that setup the prop choice should be very safe to start. For a 41” hull a 47-50mm prop would be ideal.
But see how it goes and putt around with what you have got.

Shawn

[Peter A]

For the size hull, A TP 4060 1350kv with the Seaking 180 and for prop X447/3, X450 or 452 detongued will work well on 6s. Lower kv and bigger prop, you can always go smaller on prop or to 4s to drop the speed. An older hull may not handle a lot of speed, but the above combo can get you at 50 mph.
On 1700kv and 4s you will need to go bigger on prop as Shawn has suggested.

[LibertyMKiii]

Well on that setup the prop choice should be very safe to start. For a 41? hull a 47-50mm prop would be ideal.
But see how it goes and putt around with what you have got.

Shawn

Thanks for the prop sizing advice.

For the size hull, A TP 4060 1350kv with the Seaking 180 and for prop X447/3, X450 or 452 detongued will work well on 6s. Lower kv and bigger prop, you can always go smaller on prop or to 4s to drop the speed. An older hull may not handle a lot of speed, but the above combo can get you at 50 mph.
On 1700kv and 4s you will need to go bigger on prop as Shawn has suggested.

Being our first boat and built mostly for my son who is 9 years old. Slow speeds is a good thing! In my experiences higher speed = more crashing.
I'll order another prop as you guys have suggested around 47mm.

I plan to build a rigger later on for speed use. Currently doing some CAD design for it

[LibertyMKiii]

Picture of my Sons Monohull that we are building:

Blue sparkles Capture.jpg

Picture of my outrigger design:

2Capture.jpg

[oscarel]

Picture of my Sons Monohull that we are building:

[ATTACH=CONFIG]173015[/ATTACH]

Picture of my outrigger design:

[ATTACH=CONFIG]173016[/ATTACH]

There are proven plans on the net for riggers if you want to start there.

http://www.ne-stuff.net/2012/10/keps-t2-21-prestentation.html

[LibertyMKiii]

There are proven plans on the net for riggers if you want to start there.

http://www.ne-stuff.net/2012/10/keps...tentation.html

Thanks that is helpful. I had read about the 4 degree AOA for the sponson and ski but this contained some other good details!

[Peter A]

There are proven plans on the net for riggers if you want to start there.

http://www.ne-stuff.net/2012/10/keps...tentation.html

The download links no longer work, shame that.

[srislash]

Picture of my Sons Monohull that we are building:

[ATTACH=CONFIG]173015[/ATTACH]

This is a great looking hull

[oscarel]

The download links no longer work, shame that.

Bummer, sure doesn't.

[ezhitz]

Try this http://www.ne-stuff.net/2015/12/keps-t3-21-freebie.html

[LibertyMKiii]

Made some good progress on the build up of this deep vee mono-hull boat.

Quick question for the seasoned pros. I am using an TFL stinger made for 3/16. I have the 1/4 OSE brass tube ideal for the 3/16 flex shaft.
There seems to be an excessive gap on the fitment of the 1/4 brass tube into the stinger. I was expecting it to be a rather snug fit. I foresee that being an entry point for water into the hull.

Should I sleeve the tube with the next size up? What is your experience and what fits correctly?

OSE support advised that the tube should end shortly after the transom to allow for adjustment. Meaning don't worry about fitting it snugly inside the stinger. I get the idea behind how this allows for angle adjustment, but nothing would keep the water from coming up the tube. Drawn image attached based on my understanding. Please educate me