Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Engine for an F-20

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Old 03-30-2006, 09:31 AM
  #1  
raven_1978
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Default Engine for an F-20

Hi i am fairly new to fixed wing flight, i flew helis for about 7 years,and i have just recently received an f-20 tigershark prop jet from a buddy of mine and i ended up scoring an OS 40 FX MAX... My question is this......will this engine provide the power and performance for this jet or will it be somewhat under-powered?

Specifications

Wing Span 47"
Length 54"
Wing Area 535 sq. in.
Weight 5-6.5 lbs
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Old 03-30-2006, 09:39 AM
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bob27s
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Default RE: Engine for an F-20


ORIGINAL: raven_1978

Hi i am fairly new to fixed wing flight, i flew helis for about 7 years,and i have just recently received an f-20 tigershark prop jet from a buddy of mine and i ended up scoring an OS 40 FX MAX... My question is this......will this engine provide the power and performance for this jet or will it be somewhat under-powered?

Specifications

Wing Span 47"
Length 54"
Wing Area 535 sq. in.
Weight 5-6.5 lbs
keeping in mind that most of the folks posting here overpower the heck out of the F-20 to get top end speed.....

The OS 40FX will fly it just fine. If the plane is not finished, do what you can to keep it light. 6 lbs or under is what you will need to shoot for. (question - is it a 40fx or a 46fx ??)

If you want better performance later on, install one of the jett-stream mufflers - quick 1500 rpm add-on.

Which F-20 is it ?? The Direct Connection/Juno kit version ?? Or one of the ARFs ?
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Old 03-30-2006, 09:50 AM
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raven_1978
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Default RE: Engine for an F-20

the engine has "40" in raised lettering on the crank case, and on the other side says "OS MAX FX" and the f-20 manual i received with it says " NORTHROP ADVANCED TACTICAL FIGHTER" Cermark Electronics..it is an ARF that i got 2nd hand this is all the info i have on this bird as of yet!!
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Old 03-30-2006, 09:54 AM
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Default RE: Engine for an F-20

oh yeah i forgot to say that the jet was already built and flown b4 i have not built it myself not sure if that matters or not
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Old 03-30-2006, 09:55 AM
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Default RE: Engine for an F-20

ok, that is the smaller Cermark F-20.

nice plane.

The engine will work fine.

When building the plane, re-consider the rudder linkage. The way the ARF is designed, the rudder WILL flutter. Some have actually glued the rudder in fixed position to correct this issue. Some planning up front, and you can probably install a properly working rudder with a more solid linkage.
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Old 03-30-2006, 10:31 AM
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Default RE: Engine for an F-20

Can anyone estimate how fast this would fly with the OS 40 FX MAX? just out of curiousity !!
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Old 03-30-2006, 12:12 PM
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Default RE: Engine for an F-20

About 110-115....

FBD.
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Old 03-30-2006, 09:32 PM
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Default RE: Engine for an F-20

Try hard to keep a stooopid grin off your face cause you are gonna love this plane. FWIW I would get a hotter motor but you will be able to fly with what you got.[8D]
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Old 03-31-2006, 12:57 AM
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Default RE: Engine for an F-20

just curious, but how do these F 20 ships rate versus the patriots?
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Old 03-31-2006, 01:56 AM
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Default RE: Engine for an F-20

They are about even. Me and Razor had a big race/shootout last season.
He had his Patriot....Jett 50 power, retracts, APC prop. I had my F-20,
Rossi .45 piped, no retracts, Mas prop....

....basically a tie. My engine was faster, but his plane was sleeker. If you
read my signature line, you can see why he wasn't able to pass my plane.

Heh heh heh.

FBD.
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Old 03-31-2006, 02:36 PM
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Default RE: Engine for an F-20

hmmmm...I wonder if Razor will come up with a similar version of how the day unfolded????......I was sort of going for the F20 in that race I thought it would be pretty close too..I didnt really check the patriot out that well before hand because there was no way i could get one but they do appear rather similar in dynamics... I still cant believe how light you got that F20 FBD..I was reading that either during or just before getting my Phoenix F20 and thought for sure it would be lighter but it didnt turn out that way!!!

anyway both are very cool planes
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Old 03-31-2006, 03:18 PM
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Default RE: Engine for an F-20

Yeah, Blue....5 lbs 13 oz. is pretty ltght with a metal spinner, and the long pipe.

FBD.
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Old 03-31-2006, 04:50 PM
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Default RE: Engine for an F-20

You are aware of what that measuring instument is really called right? Hint, it is what Razor would call FBD regarding how even they were.
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Old 03-31-2006, 05:05 PM
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Default RE: Engine for an F-20

....what's that smell ? [sm=stupid.gif]
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Old 03-31-2006, 05:08 PM
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Default RE: Engine for an F-20

Dunno but it seems to be coming out of the West[sm=bananahead.gif]
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Old 03-31-2006, 06:41 PM
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Default RE: Engine for an F-20

Oh Mercy, Vic....look what the Goodie Man brought today ! A Jett Whooper .61

....er....I meant a Rossi FIRE .61 short stroker. (a buck and a quarter delivered)

YEAH BABY !!
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Old 03-31-2006, 06:43 PM
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Default RE: Engine for an F-20

Something is messed-up. The pictures are posting too large. [sm=stupid.gif]
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Old 03-31-2006, 07:41 PM
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Default RE: Engine for an F-20

FBD...that is one SEXY looking jet...god i love the looks of these things...is it just me or is the typical scheme of this ship in some form of red...so far mine is the only one i have seen in the military scheme
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Old 03-31-2006, 09:05 PM
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Default RE: Engine for an F-20

New motor new schmoter. Aint they cool. I scored this thing with the red carby for $120 at a recent swap meet[X(].


Raven, I had to look close the first time you posted a pic because of the color. I think yours has been officially re-covered. I had one that was damaged in shipping and did the same thing after repairs. Your Tiger Shark looks great.[sm=thumbup.gif]
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Old 03-31-2006, 09:16 PM
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Default RE: Engine for an F-20

Thanx vic i cant wait to see what it'll look like in the air and perform like with the 40fx (got rooked on ebay, wuz posed to get a 46 fx oh well) and as for color it makes sense 'bout being recovered cuz i took a closer look at it and the covering does have a few bubbles in it. Did a weigh in on, ahem, fish scales, but no radio gear yet everything else is there...4.9 lbs. Is this ok or too heavy?
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Old 03-31-2006, 10:06 PM
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Default RE: Engine for an F-20

I like the scheme[8D]
Don't look for blinding speed with the motor you got, don't try to do a banked turn at low speed (I lost my last one with that move) and make sure the cg is on you should have a hoot. I love all the ones I have.

The intrument in question is technically known of as a deliar - DAVE[sm=stupid.gif]
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Old 03-31-2006, 10:56 PM
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Default RE: Engine for an F-20

You know....I think the early ones came in silver or red....

(you gotta love the Jett Whoopers )

FBD. [8D]
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Old 03-31-2006, 11:09 PM
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Default RE: Engine for an F-20

I thought all of them were red? Only my yellow and CH's yellow black are the only ones I have seen done another way. OOPs a guy in my club did a DC in russian camo and I spotted one at a swap meet again a DC in Coors Light colors.
I do like the silver Military look along with how the silver Ultracote works I may go that route on the repair of the SA version[&:]. Afore mentioned slow turn. I do know the first Pat I do is going to be either black or silver for sure.[sm=stupid.gif]
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Old 04-03-2006, 08:59 PM
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Default RE: Engine for an F-20

Hey speed Freaks I got one of the Phenix F20 I have A 46 fx with A pipe what prop should I use and do you think I might get 120 mph Im going with tail dragger instead of trike landing gear.
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Old 04-03-2006, 09:47 PM
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Default RE: Engine for an F-20

ORIGINAL: vicman

I thought all of them were red? Only my yellow and CH's yellow black are the only ones I have seen done another way. OOPs a guy in my club did a DC in russian camo and I spotted one at a swap meet again a DC in Coors Light colors.
I do like the silver Military look along with how the silver Ultracote works I may go that route on the repair of the SA version[&:]. Afore mentioned slow turn. I do know the first Pat I do is going to be either black or silver for sure.[sm=stupid.gif]

I heard that! Dare to be different!
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