cphoto

I have a new Phoenix Seabee that I am building and can either go with an Evolution 46 or a Magnum 70 4-Stroke. Has anyone mounted either of these motors on this plane, and if so, how did it fly? Also, what prop do you use? Thanks for any response.

seagull extra

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I had one with a super tiger .51 and it was a very nice handleing plane. I sold it a couple of years ago but I am looking for a plane for my new YS63 and I am considering buying another one for it. The plane will fly very nice with either of the engines you mentioned, but if I were you I would go with the 70 4stroke mounted inverted. Good luck.

bigedmustafa

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I flew my last Phoenix SeaBee with an O.S. .46 FXi, and the plane balanced perfectly with this engine on the nose. A Magnum XLS .46A would be slightly lighter-weight but should fly the plane quite well. The Magnum XLS .52A might be a better choice, it weighs in at almost exactly the same weight as the O.S. .46 FX and would provide a little more authority when spinning a higher pitch prop. An 11x6 would be a good match for the Magnum XLS .46A, where the .52A could turn a 12x5 or 11x7 pretty handily.

The Evolution .46 NT weighs in at 16.96 ounces, and should balance the SeaBee just about perfectly.

The Magnum XL .70 RFS is significantly heavier, weighing in at 21.2 ounces. It should fly the SeaBee with authority, but balancing the plane will requite a fair amount of creativity.

I'd recommend that you consider the Thunder Tiger F-75s instead if you're looking for a 4-stroke for the SeaBee. It weighs in at a feathery 16.2 ounces and will require very little work to balance the SeaBee. It's available for $169.99 from the folks at www.thundertiger4u.com:

http://www.thundertiger4u.com/thunde...s-p-13120.html

The O.S. Max FL-70 4-stroke would be a good choice as well, weighing in at 18.3 ounces, it's $159.99 from Tower Hobbies right now after the $20 savings on orders $149 or higher. A Saito .62A, .72, or .82 would also be a good fit from a weight standpoint, but all of these engines are in the $200+ price range. Saito engines are very high quality, however, and if you can fit one in your budget they are well worth considering.

If you already own the Evo .46 NT and/or the Magnum XL .70 RFS, either one of these engines should work. You will need to work a little harder to balance the .70 RFS, but the Evo .46 NT should be very easy to balance. The Evo .46 should fly the plane well on an 11x6 prop, where the .70 RFS will probably fly best on a 12x7 or 13x6 propeller.

Good luck and good shopping!

seagull extra

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bigedmustafa is correct about the balance, but there is an easy way to balance with the heavier engine. You can mount the elevator and rudder servo's in the tail. The sides are fully sheeted so you just cut the hole for your servo and glue a little piece of wood inside were the servo mountings screws go.
PS The stock split elevator pushrod sucks anyway.

cphoto

Thanks Guys for the comments, I think I will go with the 46 Evolution for the balancing issue and it looks like it would be a lot easier to install. Now, what to do with the 70 Magnum?....I am thinking Twist or maybe a u-can-do 46.

Well, I do have a new Great Planes Revolver to build that I was planning on using my OS 50sx on, I could use the 70 Magnum on the Revolver, and put the Os 50sx on the Seabee, but I am not sure that the revolver would fly better (faster) with the 70 or 50.

Oh well,.....Decisions, Decisions!

CustomPC

I would go with the OS .55AX in that model.

cphoto

Well, I already have the 50sx that's waiting for a plane and I think it will be fast enough for me. Plus, I have read that someone had a 50sx on his Revolver and that it was very fast.

seagull extra

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Well I was at the local hobby shop today and they had a seebee in stock so I picked it up. Iwill be installing my new YS.63FZS in her. I am really looking forward to getting her in the air this spring. It looks like it will come in at about 5lbs8oz. I will be starting with a 12"x8" prop as I am looking for some serious speed.