choosing a 2 stroke/4 stroke
 

hi - i'm about to buy an engine for my .40 - .60 ugly stik - but not sure whether to go 4 or 2 stroke - if i go 4 stroke it'll be either saito or os - if i go 2 stroke i only really know os but would like to consider other good makes - any thoughts on any of this would be gratefully recieved - thanks in advance

RE: choosing a 2 stroke/4 stroke
 

My only advice would be to buy the best quality that you can afford. For my money, that would be OS, Saito or Enya (in any order).

And don't be tempted to fit a great stonking engine into the airframe.

RE: choosing a 2 stroke/4 stroke
 

I know lots of people say don't over power your model, but having done it, I can honestly say it's the most fun you can have legally. If you have a stik 60, put a 90 sized engine in it. If you have a 40 sized model, put a 60 in it. Even if you go with the recommended engine, you'll still be nose heavy. Since you're going to need to add weight to the tail anyway, you might as well put in an engine that will allow for a NASA approved launch.

RE: choosing a 2 stroke/4 stroke
 

.....thanks for the rapid response......hadn't considerd Enya....are they a quality engine?

RE: choosing a 2 stroke/4 stroke
 

To my mind they are THE engine.

RE: choosing a 2 stroke/4 stroke
 

Affirm! Very nice engine, is the Enya. Not a cheap option, though.

RE: choosing a 2 stroke/4 stroke
 

as nice as saito or o.s?

RE: choosing a 2 stroke/4 stroke
 

You can go to the user review tab at the top of the page and compare engines. Once in the compare window, click on details and there is a section you can click on that says "what works well with this engine" where you see what planes othe folks have used them on. You can also read user reviews. All the specs on HP and weight are there as well. Neither of the three mentioned are cheap.

RE: choosing a 2 stroke/4 stroke
 

Get yourself to your model shop and handle the goods.

RE: choosing a 2 stroke/4 stroke
 

I respectfully disagree. There is more to overpowering a model than just adding a bigger engine. The bigger engine throws a bigger prop and needs more ground clearance. Also you have to add a larger fuel tank as the larger engine will consume more fuel than a smaller engine generating the same thrust. I've done this, too but you are inviting catastrophic failure. My U-Can-Do 40 has an OS .65 because I read similar comments and as a result the plane is waaaaay over powered. She will accelerate in a vertical climb and outfly the large control surfaces causing significant flutter.

To the topic of this post, everyone has their favorite engine as do I and few people have bad things to say regarding OS Max. When my son steps out of his trainer, we will likely go with a Big Stick 40 with an OS .72 4-stroke which has the same HP rating as an OS .46.

RE: choosing a 2 stroke/4 stroke
 

I have a 40 size ugly stick and I have used
a Saito 82 on her. It now has an OS 70, both
engines work for me on this plane. The 82
graduated to my Astro Hog last Month.

IMO, The Saito makes more power beeing
slightly larger but drinks alot of fuel also.

Bob

RE: choosing a 2 stroke/4 stroke
 

Too much power is just about right!!:) I like the OS better then the Saitos in four strokes but that's just a me thing. I run the OS 91FS in some of my 60 size planes and love them. My planes are all pattern or IMAC planes, no 3-D so I have never run into any control problems from over powering. I have an old Hots 60 size from a Mid West kit with a YS 1.10 and that one if the most fun to fly. Maybe because it's a fun fly plane??:D In the smaller 40 size planes I really like the OS 55 AX, it doesn't over power much and the engine can be used in several different planes down the road. I use it in some of the 60 size planes like the Pulse.
Just something to think about. I like what Bill said about the user forum though, worth looking into before you buy anything. Everyone here has there own ideas so you may want to see what other people are saying.

RE: choosing a 2 stroke/4 stroke
 

if you want a 2 stroke the gms.47 is great engine 13700+ on a apc 11x5
if you want a 4 stroke cant beat the magnum's for their price, they weigh a little more but that is it.

RE: choosing a 2 stroke/4 stroke
 

Since you are in the UK, you check out Just Engines http://www.justengines.unseen.org

In two strokes, they handle:
J'EN - their own brand
ASP - UK equivalent to Magnum
Irvine
Moki
OS

Four Strokes:
ASP
OS

For a 40 size stick I'd want a .46 to .55 two stroke or a .70 to .82 four stroke.
For a 60 size stick I'd want a .61 to 1.00 two stroke or a .91 to 1.00 four stroke.

RE: choosing a 2 stroke/4 stroke
 

it depends of how much money do you want to spend, i have the Aeroworks 46-.60 and i drop a .81 Alpha 4 strokes there and it really good match, just enough for fun fly and sport flying. I like O.S. causei have been using then since i was 5 years old.

http://i247.photobucket.com/albums/g...f/DSC08949.jpg

RE: choosing a 2 stroke/4 stroke
 

can anybody help .i just purchased a piper cub clipped wing from the wings maker the wing span is 62inches my question is it says engine size 4 stroke or 2 stroke .40 is it posible to install a tower hobby.46 2 stroke glo engine i was thinking a super tigre gs .40 ringed would the .46 be much different in weight or size any suggestions???

RE: choosing a 2 stroke/4 stroke
 

can anybody help .i just purchased a piper cub clipped wing from the wings maker the wing span is 62inches my question is it says engine size 4 stroke or 2 stroke .40 is it posible to install a tower hobby.46 2 stroke glo engine i was thinking a super tigre gs .40 ringed would the .46 be much different in weight or size any suggestions???

RE: choosing a 2 stroke/4 stroke
 

get the th 46 or gms .47, but if you have the .40 it will work

RE: choosing a 2 stroke/4 stroke
 

Good discussion lots of info here. I have a 25+ year old Enya on my trainer. It sat for 20+ years. When I got it, it was almost locked up from the caster drying out in it. I used a little penetrating oil to get it moving, flushed it with fuel. I mounted it on the test stand and it fired right up. Didn't have to really adjust anyhting. Great engine.

I can't seem to find to find them anymore. I think they may not be making them anylonger. No one carries them and I can't find anything about new ones on the net.

Whatever you do, Iwould go with 4 stroke, they seem to use less fuel and sound great! Less fuel also means less mess to clean up at the end of the day!

If anybody knows if Enya is still making engines I would love some info.

RE: choosing a 2 stroke/4 stroke
 

If you like speed gp with 2 stroke if you prefer all out power go 4 stroke. In the plane you are putt ing it in don't really matter but if you wish to go to 3D in near future get a 4 stroke.

RE: choosing a 2 stroke/4 stroke
 

They certainly do but its mailorder from japan. http://enya-engine.com/catalogueE_top.html

RE: choosing a 2 stroke/4 stroke
 

best bang for the buck i would go with the tower hobbies .46 http://www3.towerhobbies.com/cgi-bin...?&I=LXJA86&P=0

thats 1.75 hp and the OS la .46 is only making 1.25 hp and i think the tower hobbies engine is alot better. Theres tons of threads here about these engines. But i dont think your going to notice a difference from a .40 to a .46.

RE: choosing a 2 stroke/4 stroke
 

The Tower Hobbies .46 and the Super Tigre GS-40 are about the same size and weight. Power wise, I doubt that there is much difference. The ST GS-40 is a pretty hot engine after a rich break-in of several tanks of fuel. Both are great engines and both will pull your Cub around at more than scale speed, so don't be afraid to throttle back a bit. Your flight will last longer and you won't be beating up your model as much with the increased aerodynamic pressure that full throttle operation imparts.

Good luck and tell us how you made out. We're interested.


Ed Cregger

RE: choosing a 2 stroke/4 stroke
 

Four strokes are more fuel efficient for a given HP, however they have to be a bigger displacement and are more complex, both adding to the weight for the same power rating. Unfortunately they run with a higher oil content in the fuel and have a crank case vent so you have two sources of spent oil dripping. To escape the oil mess, one has to go electric or gas ignition.
That said, I LOVE my four strokes! I love bringing them to life, tuning them, adjusting the tappits. And most of all I love the sound.

RE: choosing a 2 stroke/4 stroke
 

Yeah, that has got to be MY favorite part as well. The sound! The only thing that beats the 4 stroke sound is either muti cylinder engines, twins, or quads. If the muti cylinders are 4 strokes, even better.
There is nothing like the sound of a finly tuned tiny radial. Man, music to the ears!