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Top Flite P-47 Engines

Old 12-27-2002, 09:27 PM
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slammin_sam
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Default Top Flite P-47 Engines

I'm about half way through building a Top Flite P-47 60 Gold Edition and need to decide on an engine. I have an opportunity to buy a new Saito FA 91S for $239, an FA 80 for $224 and a FA 72 for $224. I'd appreiate any information on these engines for the P-47 and if these prices are about right. I am putting in Robart retracts. Thanks.
Old 12-27-2002, 10:38 PM
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Default Re: Top Flite P-47 Engines

Originally posted by slammin_sam
I'm about half way through building a Top Flite P-47 60 Gold Edition and need to decide on an engine. I have an opportunity to buy a new Saito FA 91S for $239, an FA 80 for $224 and a FA 72 for $224. I'd appreiate any information on these engines for the P-47 and if these prices are about right. I am putting in Robart retracts. Thanks.




YS 120 is the ONLY way togo!!!!!!!!!
Old 12-27-2002, 11:03 PM
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slammin_sam
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Default Top Flite P-47 Engines

John,

Do you think the Saito 91 doesn't have enough horsepower or is just not a good engine? BTW-the ys120 has been replaced by the 140.

sam
Old 12-27-2002, 11:22 PM
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Default Top Flite P-47 Engines

Originally posted by slammin_sam
John,

Do you think the Saito 91 doesn't have enough horsepower or is just not a good engine? BTW-the ys120 has been replaced by the 140.

sam


IMO, the 91 just aint got the power to haul that air frame around. I know a guy that did the same thing and he wasnt happy with how it flew. and now he has a YS 120 in it, and he is very happy with how it flys. now its all in how you fly and what you think that airplane should fly like. if you like the more real slow look, then i say go for it. but if yer like me and love fast airplanes and warbirds then go with a YS they are a great well known proven engine, with great power. I have YS's in everything i own and fly other then my 3W P-51. and everyone of them has well over 500-1000 flights and then some.

I have seen people have good and bad luck Saito, not saying they are a bad engine by any means. IMO i just think YS is the best engine you can buy. just all depends on how you fly and how you want your P-47 to fly.


BTW you can still get the 120s
Old 12-27-2002, 11:41 PM
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Default Like Strega Said!

Its all in how you fly.
If you want an insane rocket that goes vertical out of site use the 120 YS The YS 120 is really really powerful!
The YS .91 is I think a perfect match for the TF Warbirds. The Saito .91 would be the best of your three choices and is a fantastic engine. I have the OS .91 Four Stroke in my P-40 and it is perfect, Fast with plenty of authority and is scalelike at full power but will take off and fly all day at 1/2 throttle. overall makes for a nice flying model. My P-40 weighs in at 10# and actually floats. A .61 fx will pull those airplanes almost vertical if built lightly (easy on the Epoxy) I had an O.S. 1.08 FSR on my 1st TF P-40 it flew well but would tip stall at the slightest provocation and I was afraid to use full power I almost pulled the Tail off of the airplane due to allthat excess of power. so my Vote is for the YS or OS 91 Four strokes. YS .91 being the better choice.
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Old 12-28-2002, 12:55 AM
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Default Top Flite P-47 Engines

if you are using the robart retracts you will be smart to go with the 120 as the retracts will add extra weight and the 91 will have to work too hard,I would rather have the power and throttle back.I guarantee that once you fly the plane you won't want to throttle back!!! I fly a 92 inch Ziroli at 35 pounds and the only way to fly it is full bore.Buy the 120 you can always throttle back if you want but if you need the extra power and don't have it with the 91 your stuck!!!
Old 12-28-2002, 03:52 AM
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Default Re: Top Flite P-47 Engines

Originally posted by slammin_sam
I'm about half way through building a Top Flite P-47 60 Gold Edition and need to decide on an engine. I have an opportunity to buy a new Saito FA 91S for $239, an FA 80 for $224 and a FA 72 for $224. I'd appreiate any information on these engines for the P-47 and if these prices are about right. I am putting in Robart retracts. Thanks.
I do have to say....them prices for the Saito are a little high.

My LHS had the Saito 65 for $175, the 91 for $209, the 100 for $239. So if you decide to go with the Saito, let me know and I'll help you to get some better pricing.

Kev
Old 04-01-2003, 02:53 AM
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tim thompson
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Default Top Flite P-47 Engines

Mine flys great on a saito 90 why put extra money in when you dont need to
Old 04-01-2003, 04:45 PM
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SVX
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Default Top Flite P-47 Engines

I find that over all the threads I have read, Some say 90, some say120. The only reason that I can come up with for this variation of engine choice is whether you build light or not, and how you learned to fly. I am tooling up to start my P-40 from brian taylor plans. I want to put an O.S.90 in it but now am worried that it won't be enough. I plan on putting retracts and flaps on it and glassing and painting it. The second question is how much money are you willing to spend. My O.S.90 was $250, a new Y.S.140 is approaching $500 !! The P-47 is a larger plane than alot of the TF warbirds but I would still make your choice depending on your building methods.
Old 04-02-2003, 10:20 PM
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James_srfc
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Default Top Flite P-47 Engines

I built and flew the 60-120 size gold edition p47 thunderbolt.

Retracts, loads of servos, not light, but not heavy, about 7kg, i think, A super tigre 90 well run in, run the engine with 5% nitro mix, and a 14X6 prop master airscrew, very sharp, cuts through the air...

My p47 was a dream to fly, for full flaps you might need some ballast in the nose, but it will fly clean. The power is really only needed for takoff, as for scale maneuvers any weight in the airframe will be translated into momentum when your flying. Also in case anyone did know!! the P47 was not a light aircraft in the full size anyway, as a matter of fact was the heavest fighter of WW2 as i recall, it will fly fine, and a 90 is loads of power, as a 120 will just eat more fuel.

Also to note, you will most likely need to tilt up your ailerons about 1/8th of an inch on each wing. This is if you intend landing initially without using the flaps. It helps to provide washout.

Hope this helps, and any questions just ask..you will love the p47 its a gr8 kit to build, and its even better to fly. Have just bought and started building a kranz 1/5/100 inch p47 bubble canopy, with 95cc petrol engine, hope it flies as well as the top flite one did!!!

James
Old 04-03-2003, 02:43 AM
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Default Top Flite P-47 Engines

Mine has an OS .91 Surpass with all the options(Weight). Flaps, bombs, retracts, cockpit, dummy engine, you name it. The .91 has plenty of power. I to am a YS fan, but you don't need a 120 in it. Yea, it would be fun, but you don't need it. Trust me, I have been flying mine for 3 years now. Any good running .91 4 stroke will fly it fine. The .72 is not enough engine! Trust me on that one too!
Old 04-03-2003, 04:42 AM
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slammin_sam
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Default Top Flite P-47 Engines

Thanks everyone. I'm going with the Saito 91. I'm about 90% finished. Here's a pic.
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Old 04-04-2003, 02:03 AM
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Default TF P-47

When the TF P-47 60 size was not the gold series..somewhere around the mid 1970's..I built the razor back version using tissue and dope..then coating with talc and dope..sanding smooth...but mine had no retracts...I flew it on a OS 60 Blackhead....and I think it was very scale....the P47 was a very heavy plane and not a rocket ship at all...unless it was extremely high and doing a dive...then it dropped like a full bottle of beer....I guess to each his own...if you want a patternship that looks like a warbird..do the big motor route...its better to have more power on tap and not use it then no power and need it...by the by..it was one of the best and docile flying planes that I have ever owned...it had a special washout built in and it worked...TF did their homework on that one...
Old 11-04-2011, 05:07 PM
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Default RE: Top Flite P-47 Engines

I am building this kit now....I plan on building light...fixed gear, flaps, monokote covering.....no extras other than Top Flite cockpit and dummy engine....just clean and simple. My question is....is the Evolution .61NT 2-stroke enough to get this puppy off the ground? I am not looking to build a rocket ship or like johnnycart said " a patternship that looks like a warbird". I would like to use the .61nt that is gathering dust in the closet....keep costs down you know.......
Old 11-04-2011, 05:25 PM
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Default RE: Top Flite P-47 Engines

Nice plane Slammin. My two cents is the satio will fly it, the YS 1.20/1.40 will fly it better and be just right. I say this as I have been flying on for 15 years with a YS 1.20nc engine, it is the perfect combo, I didn't need any nose weight, the motor is completely hidden, reliability is second to none, I've had one flame out in 15 years. The plane weighs 12lbs dry, has sierris retracts, flaps and full cockpit with pilot. It flies 90mph straight and level, it will not go vertical, but does nice barrel rolls. Great flying plane you'll love it. Give the 90 saito a go and let us know how she flies. (full report)
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Old 11-04-2011, 06:23 PM
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Default RE: Top Flite P-47 Engines

Jeez, some of you caught me at a bad time (for you).
Don't listen to all the bull****: Saito .91 is perfect! Saito .80 is same design/ weight, but with less c.i. (and less power), so why bother. Ditto on the .65 (are they actually still making that boat anchor?)
I have a Saito 1.00 in mine: flies GREAT! Only reason I have 1.00 instead of .91: they were exact same price at the time. I don't use full potential of 1.00: servo is set so that full throttle is never actually achieved (maybe 90%?), so the same plane could easily fly at 90% of my 1.00.
Assuming you want to fly it like a warbird: no need for anything larger than the .91.

BTW: I have 3 gear retracts on mine (2 mains + tailwheel), AND a pair of Vortac bomb-drops. I load my bombs up with lots of baking soad, adding more weight for takeoffs: STILL plenty of power. Anyone who tells you that a 1.20 is the only way to go is just plain full of it.
Old 11-05-2011, 02:42 AM
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Default RE: Top Flite P-47 Engines

The original posts for this thread are from 2002/2003. A .61 will fly that plane just fine if you use the right prop and keep the weight down as you are doing. Really think about weight reduction, Grams and onces turn into pounds real quick.
Old 11-05-2011, 05:02 AM
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Default RE: Top Flite P-47 Engines

ALL the smaller TF warplanes were designed around a 60sized engine. Back when the original kits were designed the 60 was about the biggest engine available.

I had a TF P-47, glassed and painted flying with an OS .61 and it was a very good flyer. Probably weighed around 12lbs, or more.
Old 11-05-2011, 01:10 PM
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Default RE: Top Flite P-47 Engines

I'm doing the TF ARF of this plane and have decided to go with the DLE20 gasser. It will be perfect with this plane and I bought the Jtec Pitts wraparounnd muffler for it as well. With the price of glow fuel going through the roof, there's no reason not to use this engine. It comes with a muffler and the electronic and with a Tower Member offer I got in an email it only cost $229 and free shipping. The reviews on this engine are outstanding and there is a 188 page thread in RCU under gas engines...........check it out and you'll say goodbye to expensive 4-strokes and overpriced 2-strokes.

cheers,
Andy
Old 11-05-2011, 03:32 PM
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Default RE: Top Flite P-47 Engines

The new small gas engines are a great choice, no to mention you don't need expensive glow fuel.

Old 11-05-2011, 04:07 PM
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Default RE: Top Flite P-47 Engines

ORIGINAL: oldtyme
I'm doing the TF ARF of this plane and have decided to go with the DLE20 gasser. .......... The reviews on this engine are outstanding and there is a 188 page thread in RCU under gas engines...........check it out and you'll say goodbye to expensive 4-strokes and overpriced 2-strokes. .cheers,
Andy
A Chevy Cobalt is much less expensive and economical to drive (better gas milage) than a Camero. However, some prefer the style, performance, and sound of a V-8 Camero, and thus spend the extra bucks. To each his own. If someone prefers cheap engines which are economical to operate, over what others consider a great sounding, high performance, yet lighter engines: so be it. But don't assume that everyone thinks that way. Some don't mind spending a few extra bucks, now and in the long run, to get a great looking, great sounding, great performing, and LIGHTER engine package. BTW: I am 1 of them. I put a lot of time and money into my warbirds, don't want no 2 stroke sound in mine, don't want to add the weight, and LOVE they way I am able to make those Saito engines blend in with dummy radials.

That's my Saito 1.00, mounted inverted (and completely within the cowl). The rest of the 'engine' is the dummy radial.
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Old 11-05-2011, 04:21 PM
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Default RE: Top Flite P-47 Engines

????
Old 11-05-2011, 06:35 PM
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Default RE: Top Flite P-47 Engines


ORIGINAL: RWHorton

The new small gas engines are a great choice, no to mention you don't need expensive glow fuel.

and I like the single papertowel clean up of the oil residue, rather than the all that other stuff that sticks to everything. I really like my DLE 20.


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