Dave Wilson

I have an OS 52 FS looking for a home, and thought this would be a good fit for the Goldberg Tiger 2. The Tower Hobbies page lists engine recommendations for this plane as 40-46 2-stroke or 40-50 4-stroke. (The box also lists them as 40-46 2 and 48 4).

I was all set to have them ring the ARF up for me, when I casually mentioned I would be putting in a 52 FS. The LHS guy looked horrified and said "no way, if you want to use a 4-stroke, it has to be a 70".

Is this true? This is a 61 span plane, intended for lazy Sunday flying, does it really need a 70? What are other members using? What flight character will this have with a 52?

Any help much appreciated.

Dave

jrf

My Feedback: (551)

The Tiger 2 is not really intended for lazy Sunday flying. It's an aerobatic trainer. Of course if your idea of lazy Sunday flying includes a lot of loops, rolls and knive edge, then it would fit nicely. But in that case you are going to want more power than the 52 has to give.

The 52 puts out about the same useable power as a 40LA. The Tiger is about the same size and weight as the typical 40 size trainer. Picture a 40LA in a Nexstar or an LT40.

Jim

MinnFlyer

My Feedback: (4)

If you want a lazy Sunday flier, I think the 52 and the Tiger will be a great combo - and it'll still do some tricks!

the Wasp

My Feedback: (1)

I agree with MinnFlyer,,

a few guys at my field have the T2 with OS 46 in them, and it can fly easy or hard, it's just a good flying plane, I think the 52 will be good in it, the plane will pull pretty good with an OS 46, just set it up with low leverage rates on the linkage..

Jim

jrf

My Feedback: (551)

Agreed. And the OS 46 (SF/FX/AX) is roughly equivilent to a 70 four stroke.

Don't get me wrong, the Tiger will fly fine on the 52, it just won't have much vertical. And a Tiger 2 with limited vertical is like a 6 cyl, automatic Mustang. Ya know what ah mean?

Jim

Salty25

My Feedback: (9)

Guess I'm selling my Mustang.

There goes my manhood. LOL

Teachu2

My Feedback: (133)

It'll fly fine with a 52. I've seen them flown - and flown well- with bushing 40 motors. They NEED noseweight, so the extra ozs won't hurt. It'll fly like a real one - on the wing, not the prop.

The Tiger 2 is one of my all-time favorite planes. They fly smooth, like a pattern ship, and make you look great on landings. They have no bad habits unless you overpower them. Get it and enjoy it!

da Rock

The Tiger2 ARFs that're available right now are pretty heavy for their class. I've put together about nine 46size ARFs this last year and my Tiger2 is the heaviest of the bunch. If flies great, but it's obviously not light. I wouldn't want to fly it with a 52FS on it, unless it was being used to teach somebody on a buddybox.

It's just under 6 pounds.

The rule of thumb for estimating the power of a Fourstroke is to figure 1.5 to 1.
Take the 2cycle engine and add half it's displace back. Half of a .46 is .23. Add 23 to 46 and you got 69.
Take the 4cycle engine and find 2/3's it's size. Take 52 and divide by 3. 1/3 of 52 is 17. Two times 17 is 34.

A couple of airplanes at the field have been flying with 52FSs. They fly like they would with a .35 two cycle. One was retrofitted with a 40 two cycle. It flies better than before. The owner is planning to put a 46AX on it as soon as he can.