Motor

Naxo · #1 08-08-2005, 01:04 AM

Hey guys I am new to rc boats. I have been working on a custom deep vee that is 58" long. right now I just finished the fiberglass mould. My question is what motor should I use to run it. At first I thought of using an Airplane engine Cuz I have some lying around, Then I also thought of using a grass trimmer. If you can plz let me know what I could use. Thanks

Chris LaPanse · #2 08-08-2005, 01:30 AM

A trimmer would work, but your best choice would be something like a Zenoah G260pum. What is your budget for a motor? This page (http://www.bhhanson.com/Marine%20Eng...ct%20Line.htm_) gives you an idea of what is availible for boats, ranging from the $250, 2.5hp stock zenoah, up to the 7.5hp Quickdraw (~$800). Any would work for your boat.

Naxo · #3 08-08-2005, 01:34 AM

What do you think about the grass trimmer idea?? or plane engine?

Chris LaPanse · #4 08-08-2005, 03:08 AM

As I said, a trimmer engine would work. You probably wouldn't get the performance out of it, and being aircooled, you'd want an open boat (i.e. - without a hatch), but it could work. As for the plane engine, what size? Most airplane engines would be woefully underpowered in a boat designed for the same size engine, but it might work. Also, with a plane engine, you'd have to leave it hatchless for the cooling.

Naxo · #5 08-08-2005, 01:31 PM

Hey thanks alot I think that I am just going to save up some money to buy one of the good boat engines. If you don't mind I have one more question, Where is the best place for the prop shaft to come out of the hull?

Doubledog · #6 08-08-2005, 01:33 PM

Check out SIKK engines at http://www.oneillbrothersracing.com/. You can get a watercooled cylinder for it too. Much cheaper then the Zenoah's. (i've got one)

Chris LaPanse · #7 08-08-2005, 06:36 PM

Yes, they are cheaper. As long as you don't want more than about 4hp (the 29cc), they will work fine. They are probably (i've never owned one, so this is a guess, correct me if I'm wrong, dd)not quite as high revving as the Zenoah, but more torque. Do you have a pic of the boat you've been working on? Finally, if the reason for going with the good engine is for the watercooling (so you can run it with a hatch), the Sikk's are good motors, but are aircooled. As for the prop shaft, you want a surface drive. This will exit at the bottom of the transom (not out of the bottom of the boat).

Chris LaPanse · #8 08-08-2005, 06:37 PM

Sorry, i think I gave you a dead link in the other post, i'll try again:
http://www.bhhanson.com/Marine%20Eng...uct%20Line.htm

Naxo · #9 08-08-2005, 08:13 PM

I will have a pic up tomorrow.

Doubledog · #10 08-09-2005, 02:33 AM

Chris, the first thing I touched dealing with the SIKK was the RC230 upgrade to a 27 w/ watercooled cylinder. Nice set-up but not as compact as the PUM motors. For comparison, yes, the 29's are torque monsters but the 27's are are neck & neck w/ 260 numbers.

In the near future, there will be a SIKK that looks like a twin to the PUM motors but MUCH, MUCH cheaper. Problem some are saying is that it will be a two bolt head instead of the four.

.

Naxo · #11 08-09-2005, 12:28 PM

Here is the first pic!!
http://forums.radiocontrolzone.com/a...chmentid=58752

Naxo · #12 08-09-2005, 12:29 PM

This is just the mould and I still have some work to do before the Fiberglass is put on, but you get the idea.

Doubledog · #13 08-09-2005, 02:24 PM

doesn't work.

Naxo · #14 08-10-2005, 08:02 PM

not sure if this worked or not.

Naxo · #15 08-10-2005, 08:03 PM

ah cool it did. well anyway I just started adding the fiberglass today I will have new pics very soon.

Naxo · #16 08-10-2005, 11:18 PM

Oh and just to let all of you know, this boat is completely custom no kit was used. I hope it works the way I want it to lol...