Which 4 stroke twin engine?
 

I am going to be starting a scale WW2 Helldiver. The prototype had a ST 3000. I want to go to a two clyinder engine for the smoother operation.
I am seeking your inputs on the following engines:

OS FT-300
Saito 300 TL
Saito 300 TTDP

Power is not a high priority since this engine will be on the large size for this airplane. Ease of engine handeling and reliability are the top requirements.
Does anyone have an address for Laser engines from England? I understand they make some great twin 4 stoke engines.

Sparky

Which 4 stroke twin engine?
 

Sparky, IMHO Laser 4 stroke V's are perfect for scale applications, the V aragement lends it's self quite well for in cowl applications. Yes they cost a bit more than Satio or OS but they are difinitely worth it! They seem to tolerate the heat within a cowl and, at least mine, dosen't require any on board glow for reliable performance. I have the 300V and it will swing a prop just as good- probably better than a G62. And very, very smoothly. The only draw back is it lite weight, the planes that are disigned for this type of power usually need the nose weight. I am guessing here, I haven't actually put either my G62 or my 300V on a scale, but it seems that the 300V is close to half the weight of the G62. When deciding on buying a new engine I always try to get the one that lends itself too a multitude of applications. The opposed twin lay out really is limited to Cub type planes, or very large round cowled planes.
Anyway, Proctor Enterprises, www.proctor-enterprises. com , sells them in the USA, and the Laser site in England is www.laserengines.com .
Good luck, 2 Piece

Which 4 stroke twin engine?
 

I would agree with 2 piece here.

The Lasers were designed for scale applications. They are very smooth and produce very little noise, wich in addition can be muffled very well because these engines seem less affected by muffler backpressure then others.
They do have a little less power then an OS or a Saito, but they generally can swing a larger prop at a lower rpm, wich I would call a benefit in a scale application. Their power curves are much flatter then other high power four strokes, so power will remain pretty constant when operated at a lower rpm.

Which 4 stroke trwin
 

I have been flying a Satio 300 Twin with the single carb for about 2 years, and this engine is the best kept secret in R/C. It is powerful and reliable. I use the McDaniel on board glow, and I have not had a dead stick in over a year (except when I ran out of fuel). For real performance, use 25% to 30% nitro. I have it on a 13.5 pound generic model, similar to a Roadrunner, and it has unlimited vertical. As far as ease of handling, except for adding after run oil after flying, it ranks with any two stroke engine. I have not had to touch the needle valve in months.

Which 4 stroke twin engine?
 

Rather than mortaging the ranch to pay the fuel bills on a 4 stroke,why not look at a small gas twin like the 3x48B2? No necessity of on board ignition either.

RE: Which 4 stroke trwin
 

Hi CajunCharley:

I'm replying to your message more than 7 years after you posted it. Hope you're still around!

I'm thinking of getting the 300T with the single carb. I've got a 17 lb plane. Some reviews say that this engine can turn a 22x8 prop at 7600 RPM, which is sufficient to pull a 17 lb plane. Have you tried a 22x8 or similar sized prop on this engine? Please advise on it's performance.

Also, have there been any design updates on this engine since it was first released, or is today's engine the same thing as it was years back?

Any advise would be appreciated.

Thanks,

Atul

RE: Which 4 stroke trwin
 

Atul:
I am sure the Saito 300 will pull your plane, but it probably will not be a real powerhouse. As I said earlier, mine was a 13.5 pound model. The engine would literally pull the model straight up. I was using a Master Airscrew classic 20-10. I don't know how it would run on your 17# model, with a 22-8 prop. I would guess if you want a highly acrobatic plane that would do near 3-D stuff, you may be disappointed. On the other hand, if you want to fly more scale-like stuff, you should be satisfied. I have semi-retired my engine after all these years and may re-build it this next winter.

Good luck, and I hope my reply helps.

Cajuncharley

RE: Which 4 stroke trwin
 

Cajuncharly,

Thanks for your prompt response. I think a 22x8 turning about 7500 would work for my plane. Check out http://www.youtube.com/watch?v=MXe4iXyNw1A for a 300T pulling a simlar-sized CAP. Nice video! I don't want to do 3D. The Scale Topmodel CAP 232 is not good for 3D anyhow. It's much better for conventional aerobatics..

atul