JEFFHINES73

Hi guy wondering if you could give me a gas Equivalent of a O.S 160 fx any help would be great


thanks
jeff

soarrich

My Feedback: (98)

26cc to 30 cc.

Zenoha and 3W make good engines, and then there's this, it's new.
http://www.rcuniverse.com/forum/m_88..._1/key_/tm.htm

Super08

My Feedback: (2)

Zenoah G26, DLE30, Syssa30, or the 3W28 are my favorites to pick from. I have an SPE26 but it doesn't even come close to what these engines do. Of the bunch I would give the edge to the DLE30 for power.

arobatx

...can you give us an idea of what model you are considering? The wing area and AUW? In my opinion the model has a lot to do with it. Some would do fine on a 26-30cc gasser, and others may need more to fly like you want them to, that is, if you can add the displacement and not compromise acceptable wing loading.

JNorton

My Feedback: (2)

Okay guys I've a question.

An OS 160 is 30cc displacement. For equal displacement a glow 2 stroke motor turns a bigger prop than an equivalent sized gas. So how can a 26 cc gas motor equal a 30 cc glow or a 30 cc glow for that matter?

John

arobatx

Exactly ...that's why, in my opinion, it depends greatly upon the model choice, and how the owner intends to fly it. I had a Great Planes Ultimate, designed around the OS 1.60fx....it has a modified Zenoah G62 in it

Super08

My Feedback: (2)

The new DLE 30 is turning an 18x8 Xoar at around 8500rpm. My OS 160 only turns it at 8200.

Super08

My Feedback: (2)

lol you are as bad as me. I just ordered a P47 designed for a 43 to 65cc. Or course I have to put an 80 in it.

arobatx

JEFFHINES73

Sorry guys I should have said what im putting it in . It will be going in a worlds model GS mustang 80.5 inch wingspan 15 pounds , I was told a G26 was way to small for this plane So I got a 42 cc gasser only bad thing about it is its going to hang out in the breeze alote so I was think of getting a 160 fx for it cuz one can never have tomany motors lol

P.S thanks for all the info

Super08

My Feedback: (2)

Your vertical won't be very good with those engines. Best go with something like a good 40 or 50cc size engine for something that large.

soarrich

My Feedback: (98)

It a scale plane, I assume he wants to fly it scale, P-51s don't do vertical, they loop and roll.

Super08

My Feedback: (2)

..and go REAL fast lol. It depends on his flying style. A 30cc will fly it, but not to the point I would be happy. Everyone has different tastes and I am not sure how much performance he is looking for...

plasticjoe

My Feedback: (22)

I have a Goldberg Obsession that has a 1.60 FX.... bisson pitts muffler.... true turn spinner , Sonictronic onboard glow and a perry pump...it flies nicely with that combo had it less than a yr and have about a gallon ran through it... but I am thinking that for this plane it might need a Gasser or maybe a big 4 stroke like a saito 180 ? I flies nice but not amazing... it's an 80 inch wingspan and an 83" long fuse... about 15 lbs ...
suggestions on what gasser ? or 4 stroke ?
I was looking at DLE30.... RCGF 40.... crrc pro 40 ... but the problem with this plane is that the cowl is so narrow and small.. the 1.60 fills it up.
Also I can't go any bigger than an 18" prop... am running an 18x8 on it now and have grass stains on the tip... so I think I am pushing the edge on that.

Suggestions would be appreciated

w8ye

My Feedback: (16)

You will find there is not much difference in over all power between a 160FX and a Saito 180

The Saito has more torque down low but that is about it

As big as the plane is it sounds like it is DLE 55 material but they swing a 22" prop?

BTerry

My Feedback: (8)

My friend's Saito 180 swung a Mejz 18x8 about 200 rpm less than my OS 1.60 did (8900 vs 8700), but his had that incredible low end torque and certainly accelerated faster.

Bob Pastorello did a build thread about 2 years ago on the Obsession with a DL-50 on it. It was a ton of fun but WAY overpowered and all that torque from too large a prop would make it hard to fly. However put something like an APC 18.5x12 Pattern or 19x11 on it and it would be pretty fun. Probably a bit more power than a YS 1.70DZ.

**edit to correct RPM numbers**

w8ye

My Feedback: (16)

Those big prop cause you to throw in more right rudder on take off

BTerry

My Feedback: (8)

...and every time you change the power setting.

One other option is the very good Syssa engine which seems to be very light, and still powerful.

dave0955

Go with the Syssa for tight cowl spacing and power.
I could not find anything outside the world of nitro or electric to cleanly cowl my KMP PC-9 until I found the Syssa. Tried the DLE-30, couldn't even get it into place.
After the sticker shock ( 3 weeks worth lol) I ordered the Syssa. As soon as I got it and saw how clean it cowled, I had no regrets.
This thing is going to fly like its on rails.
Todd at Syssa is extremely helpful. The price of quality service alone is worth the extra $$$ for this awesome little engine.

If I spec'd the correct model your talking about, it specs identical to my KMP PC-9

captinjohn

Yes....right here http://www.rcuniverse.com/forum/m_8885257/tm.htm