rambler53

My Feedback: (494)

24 ounces with muffler. What advantage did a .91 FX go through your mind? I thought rpm was the consideration for this speed plane?

Cyclic Hardover

My Feedback: (3)

Start it off with a 12/7 apc, Thats what I am going to do with a G90 and a Jett muffler

uav-oscar

Bigger prop + more h.p. = more speed ?? + I also have an OS 91 fx engine = cheaper then buy a new 50 or 60 size

only question if the airframe strong enough or not???

thnx

Oscar

rambler53

My Feedback: (494)

I didn't realize bigger prop provided more speed, I thought rpm and pitch were the idea? I'm sure you pick up some speed, but weight and high rev engines were the real advantage. Any engineers online to help out further?

nchrome

Okay you speedfreaks gots a question for you all to possibly answer. Do any of you guys have a photo of the tail cones or exhaust of a F-20 Tigershark. I'm doing a little more stand off scale and don't have any photos to try to duplicate it. Don't know for sure how fast mine will be cause I'm going to use a Fox 75 on mine with a 13/8 prop.

Cyclic Hardover

My Feedback: (3)

YOu may know this already but in case you don't. Do you mean the actual F-20 or the F-5? I think Kangke and Cermark F20 are actual F 20 backends where as their is only one single tail cone. All the others that have like a flat back end represent the F-5 series which was a twin engine.

hummingbird111

here's a shot of the Sportsman Aviation version... i added the two tail cones...

nchrome

That's what I'm looking for thanks. Just a little twerk in the back of my head that I wanted to do. This will do just fine. Mines going to be done in a gloss gray and possibly panel lines and fixed gear. Another flyer in the club has one of these and his realy burns holes in the sky. Now all we have to do is patch the sky after he flys.

Cyclic Hardover

My Feedback: (3)

If you go to McDonalds and get those plastic Ketchup cups, they fit just right for a set of tail cones

GMoneyPit

My Feedback: (5)

Can someone post a link to where Jett engines can be purchased?

Thanks,
Gary

bob27s

My Feedback: (19)

www.jettengineering.com

Bob

vicman

My Feedback: (10)

I almost did that but didn't want to steal Bob's thunder.

bob27s

My Feedback: (19)

Thanks...... my thunder is my life

(sad huh.... [&o])

vicman

My Feedback: (10)

Here is a neat cut-away if anyone is interested.

GMoneyPit

My Feedback: (5)

I understand that one of the best engines for this plane is one of the Jett engines. Many of you have tried running an OS 46FX before switching to the Jett or other engine. What kinds of speeds would one expect with a properly propped 46FX with no special exhaust, just a Tower tuned pipe (the $15 job)? I'm in GA at about 300' elevation.

Thanks,
Gary

Kmot

My Feedback: (24)

Just goes to show how un-F20 like our planes are!

mlitt12345

Hello all, I have a Phoenix F20 on the way from tower hobbies, I have been reading the forums and am still undecided on engine set-up, so any help-advice very much appreciated. I cant afford a Jett engine at this time but can stand adding a jett $49 muffler to a cheaper engine. So here are some of the engines I'm thinking about but need help deciding which combo works best I do want as much speed as possible and what props to use also...............thanks mlitt12345

OS50sx $159 1.8 power / 17000rpm weight 13.7oz w/o muffler

OS46ax $114 1.65 power / 16000rpm weight 13.2oz w/o muffler

OS40fx $110 1.36 power / 16000rpm weight 13.6oz w/o muffler

G51 $80 1.48 power / 15500rpm weight 12.7oz w/o muffler

TT46 $88 1.43 power / 16000rpm weight 17.1oz with muffler

Logan X

People at this model it is possible to be put retract to eliminate drag?

Cyclic Hardover

My Feedback: (3)

I am doing it right now, Using Spring Airs. I clipped 4 inches off each wing and shortened up the ailerons . A .90 is going in the plane, Undecided on a G90 with a Jettstream muffler due to cost or another Jett 90.

Logan X

This is Juno Kit or Phoenix

Cyclic Hardover

My Feedback: (3)

Phoenix, Already have the others. It's basically getting a near total rebuild.

HaveBlue

all those engine choice will work well with the Phoenix F20.. I run a OS 50 SX with semi tuned muffler on mine and I really like it...but looking at your price comparsion above. looks like the OS50SX is out priced the others seem more economical with out any performance drop especially if you intend on buying a Jett Stream muffler for your particular choice..

I am surprised you left out the ST GS45 ABC @ $65.00 rated for 1.45 @ 16000 (13.22 w/o muffler)

the ST's Gs45 and GS40 are my favourite budget engines at the moment

mlitt12345

I got a OS50SX on the way and a Jett stream muffler, looks like they will make a somewhat economical pair......I wonder how much speed I will get out of this set-up........

Cyclic Hardover

My Feedback: (3)

Let us know .

HaveBlue

great, cant wait to hear how you go with a Jett stream muffler... I'd be interested in the tach numbers as a comparison to what I'm getting with just a Vmax muffler