I just ordered a Sig Somthin Extra kit and was wondering what
you would recomend for power?

I have a YS45 that I was thinking of using, however it likes a
tuned pipe. Would the pipe fit under the fusalage if I turn the
motor 100 degrees or so?

I have also been think about saving the YS for a speed plane
and purchasing a new engine for the SE.

If I went with a new engine what would be the best engine for
this plane?

Thank you for the help.

I just started building my SE. I chose the Magnum XLS 52A with a Pitts style muffler...engine goes for around $79.99 at Tower.

Most of the people that have these in my club run them with a OS .46 FX. I've seen them fly, these engines are screamers!!

I had an HB PDP .61 in mine. ran great and tons of power for unlimited verticle. Was a screamer...................try a super tigre .61 or .75

I'm starting one myself in the coming weeks. I have a Magnum .61 4 stroke to put on it.

Weee!

I has a OS 50 sx with 12.25 x 3.25 apc prop flies great. Wont do a knife edge though.

I've built three. 2 with .46FXs and recently 1 with an O.S. .50 SX. The SX gave it just that little bit more power that it needed.

I've used tuned pipes on all of them but the engines are all upright. From looking at mine, the tuned pipe would be very close to the bottom of the fuse and might melt the covering. Are you thinking about putting a cowl on yours? Just wondering because if you turn the engine you'd have to cut away most of the cheek and that might be a little ugly.

If you want to add a cowl you could get a pitts muffler. That is how my old stinger was set up. Looked better that way i think.

Irvine 53's are a popular choice. I would add the MVVS 49 with a tuned muffler. Both would work well.

Mark Shuman

Thanks for all the info....

The magnum XLS-52 is a good price, but how does it run.
I have never owned a Magnum engine? For the SE I would like
something reliable and preffer not to put a pipe on it unless
its a small one.

DamonTX...
Looking a pictures of the SE i thought the pipe might be to
close to the bottom of the plane if I ran the pipe under it.
I posted in the speed plane section asking about planes and
I have decided to do the following....

Use my YS.45 with pipe on a Patriot with retracts to get my speed
fix. Purchase another motor without a pipe for the SE to
learn and fly aerobatics with.

I have only owned a YS45 and a OS.25 FP. Both are very reliable.
I guess I will need to search some for info about different engines.

The Magnum XLS 52A should prove to be a reliable engine if tuned right...not to mention lots of bang for the $$$.
I plan to put a cowl on my SE (kit) so I went with a Pitts muffler. The total weight of both the engine and stock muffler is 17oz.

I've had three; OS 46SF, YS 63, and now a Saito 56. I prefer the way it flies with a four stroke. The YS 63 was great, and while the Saito is still new (maiden flight yesterday), it has plenty of power and will get better as the engine gets more time on it.

Two important things to keep in mind- this kit was designed for a mid-sized two stroke. If you intend to use a four stroke, you would be well-advised to move the firewall back at least a quarter-inch, possibly as much as a half inch, to accomodate the longer length and move the greater weight back. if you don't, the prop will look dorky sticking way out past the cheek cowls, and you will have a big-time nose-heavy airplane.

The pic is of my new SE ARF with the Saito 56. As noted above, I've had two previous ones, a kit I built and then sold because I wasn't thrilled with the performance on the OS 46, and another ARF with a YS 63. I murdered that one. I got this current one because it is simply the most enjoyable bang for your modeling buck that I've seen in 17 years in this hobby. I'll always have one.

Anyway, the picture shows what the result is when you mount a four stroke with the stock firewall location. The model flies great, but I had to put the battery behind the servos, and that is alway a PITA with ARFs because you have to do significant surgery and repair. Much easier to just move the firewall back a bit during construction.

The second consideration regarding four strokes is prop clearance. The stock gear will clear (barely) an eleven inch prop. That's not enough. Most of the four strokes compatible with this model use twelve inch and up. You'll need to purchase the excellent TNT extended gear.

You might be thinking that it will just be easier to use a two stroke. You're right. But I thought the same thing with the first one I built, and ended up going through the aggravations of using four strokes in this airplane.

And I'll do it on the next one, too...

Nice picture with the 4 stroke....

The 4 stroke is out of my price range at the moment.

I was just doing some reading on the Magnum XLS 52 and it seems to be
a love hate relationship!


The Irvine 53 has high marks.... Who has a good price on these?

for a taller landing gear, order a four star 60 landing gear for about 8.00 dollars. even the wheel pant holes are the same. always have had good luck with a os 46fx. never tried one of the new ax yet though.