Small Gasoline power for marine use

[Gilbert Pun]

Apart from existing Quickdraw, Zenoah, J & G and etc big capacity and powerful gasoline engines, I am wondering if there are others out there with less than 20c.c. capacities and much smaller gasoline engines that are suitable for smaller boats or scale boats.

Gilbert

 

[Hydro Junkie]

Someone makes a gas engine in the 15cc range, can't remember who of the top of my head

 

[Gilbert Pun]

Hoping to be able to find something less noisy and less vibration for boats ?

 

[moparbarn]

HPI makes a 15cc gas engine with fuel injection. I've heard that losi does also, but i haven't looked for info on it.

 

[Darin Jordan]

This might be of interest... I'd basically a gasoline powered replacement for a .21 (3.5cc) motor... It comes in one of the new Losi truck offerings. Looks pretty cool. CDI ignition, etc...

http://www.dynamiterc.com/Products/Default.aspx?ProdID=DYNE0505

 

[Ron Olson]

Zenoah has a 20cc marine, I've seen one but not running.

 

[Gilbert Pun]

This might be of interest... I'd basically a gasoline powered replacement for a .21 (3.5cc) motor... It comes in one of the new Losi truck offerings. Looks pretty cool. CDI ignition, etc...

http://www.dynamiterc.com/Products/Default.aspx?ProdID=DYNE0505

But, they are air cool engines for flying machines!

 

[Gilbert Pun]

Zenoah has a 20cc marine, I've seen one but not running.

Ron, you are right there is a Zenoah 20c.c. PUM available in the market.

This is one of the choices but anything smaller than that ?

 

[Steve Seebold]

This might be of interest... I'd basically a gasoline powered replacement for a .21 (3.5cc) motor... It comes in one of the new Losi truck offerings. Looks pretty cool. CDI ignition, etc...

http://www.dynamiterc.com/Products/Default.aspx?ProdID=DYNE0505

But, they are air cool engines for flying machines!

The original boat engines were all air cooled airplane engines before people started modifying them for marine use. There's no reason we couldn't do the same with this engine.

 

[Gilbert Pun]

Yes, you are talking about 50+ years ago when we first use air-cool engines and home brew them, by putting on water-cool jacket and heavy flywheel, for marine use,

Any manufacturer out there making marine use gasoline engines except Zenoah PUMs.

 

[Ronald Matthews]

Bear in mind gas makes a lot more heat for less power output. Harder to cool than a alky eng.

 

[Gilbert Pun]

Guess no manufacturer are making any now!!

 

[Don Ferrette]

Just keep in mind that a motor on gasoline will not make anywhere near the power of the same sized motor on nitro. I would doubt a 15cc motor on gas would push say an 1/8th scale at comparable speeds to a .67 nitro or FE.

 

[Gilbert Pun]

Evolution Engines has different small sizes gasoline engines for airplane, but can they be modified and used on boats??

 

[Darin Jordan]

Just keep in mind that a motor on gasoline will not make anywhere near the power of the same sized motor on nitro. I would doubt a 15cc motor on gas would push say an 1/8th scale at comparable speeds to a .67 nitro or FE.

Yup... I think that's why Dynamite made a .31 sized (5.1cc) to go in place of what would have been a .21 sized Nitro application...

I do think that Gas power in these sizes could be very interesting for racing applications moving into the future. Obviously, the class power structure would have to be thought out a bit.

 

[Gilbert Pun]

One of the example, I enjoy running a classic British kit Sea Queen cabin crusier 47" long 14" wide, with a 4S brushless motor, (but people were putting a 60 nitro into it 40 years ago), it is lacking some engine sound at the moment with FE. Somthing too fast too powerful would be out of scale speed.

I have decided not to run nitro anymore 15 years ago.

Like to consider Gasoline, any suggestions?

 

[Rudy Formanek]

There is a 9cc NGK gas engine out there and OS now make a gas 15cc engine, both for RC airplanes. OS has a variant of the 15cc gas that uses a special gas glow plug!!! Enya has a 180 (30cc) gas engine. Also can use a special Enya gas glo plug. Evolution has a 10cc gasser,too. Sorry haven't seen any with watercooling.

http://www.rcgroups.com/forums/showthread.php?t=2095471

http://www.rcgroups.com/forums/showthread.php?t=1784169

 

[Gilbert Pun]

Thanks, Rudy, so I have to wait till someone decide to make watercool engines.

 

[Craig Murphy]

Looking at the HPI website, doesn't look that hard for someone to make a water cooled head for it... could be a interesting project.

http://www.hpiracing.com/en/parts/111390/std

 

[Rudy Formanek]

Thanks, Rudy, so I have to wait till someone decide to make watercool engines.

Might be able to make an old Octura cool clamp work on a round head engine. A call to Octura or a shout out here may shake one out of the dust bin of some old hobby shop.