Top Flite 1/7 P-51 Build
#1953
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RE: Top Flite 1/7 P-51 Build
Hi Bob, the rockers will stick out the bottom a little, but not bad. http://www.youtube.com/watch?v=r4W7X_VAvdg This guy is running a 16X8 @ 9000 rpm in his test.
Aaron D.
Aaron D.
#1954
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RE: Top Flite 1/7 P-51 Build
Those are really good numbers. The horsepower requirement for the 16x8 @ 9000 and a 15x10 @ 9000 is just about the same.
The 16x8 will give about 68 mph and over 15#, the 15x8 85 mph and over 12#, a bit more than the 120 AX.
That engine should be perfect for the 1/7 Mustang.
The 16x8 will give about 68 mph and over 15#, the 15x8 85 mph and over 12#, a bit more than the 120 AX.
That engine should be perfect for the 1/7 Mustang.
#1957
RE: Top Flite 1/7 P-51 Build
Bob, if you had just been an ARF guy you would have put it on the shelf indefinitely...wondering what to do. Being a real builder, you'll be at the field the next weekend instead!
Maxx: Two quotes of you here (and I understand there may be a language barrier). "I have never built this kit or any other before and seem to be the norm on here" and "I like doing thing that are hard and hasn't been done. " That FG 20 mentioned recently seems like a potential solution, but maybe you should just build the larger scale T.F. Mustang. The smaller one is terrific on glow (which it was designed for), and very easy to fit almost any typical 2 or 4 stroke glow. The bigger one will fly even better and you can put a wide range of gasoline engines in it (which it IS designed for). If you are concerned about the increased cost of the bigger project....well; you've answered your own question. I.E. "...glow fuel is $40 a gal here". The bigger gasser will pay for itself rather quickly based on a savings of $38 per gallon!
p.s. I truly hope this is not your first kit (as you say it is). Most here would suggest that is unwise to put it mildly. This is not an airplane for any but the quite experienced, to build and fly. That said it is a great flier by all indications, and goes together quite simply for an aircraft of it's type (if you're an experienced builder and flyer). Good luck Maxx
Maxx: Two quotes of you here (and I understand there may be a language barrier). "I have never built this kit or any other before and seem to be the norm on here" and "I like doing thing that are hard and hasn't been done. " That FG 20 mentioned recently seems like a potential solution, but maybe you should just build the larger scale T.F. Mustang. The smaller one is terrific on glow (which it was designed for), and very easy to fit almost any typical 2 or 4 stroke glow. The bigger one will fly even better and you can put a wide range of gasoline engines in it (which it IS designed for). If you are concerned about the increased cost of the bigger project....well; you've answered your own question. I.E. "...glow fuel is $40 a gal here". The bigger gasser will pay for itself rather quickly based on a savings of $38 per gallon!
p.s. I truly hope this is not your first kit (as you say it is). Most here would suggest that is unwise to put it mildly. This is not an airplane for any but the quite experienced, to build and fly. That said it is a great flier by all indications, and goes together quite simply for an aircraft of it's type (if you're an experienced builder and flyer). Good luck Maxx
#1959
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RE: Top Flite 1/7 P-51 Build
Humm lets see. I have never build from a kit or a ARF. My plane are always hand build. By myself. As far as putting this together. I pulled it out of the box last weekend and is seem really simple. But that worries me. Most of the time when it seems simple means there something I'm missing. Or I'm missing someting.
Now for the overall plan. I was going to put this together for the exp. of building a mustang. I have plans for a 101 inch that I will be starting next year sometime in the fall. Way so long you ask. Well lets say that the this one will currenly take up all the space I have in my room. When I get back home I will have all the room I need to put the beast together. That one will will be my baby. This one sorry to say cause Iknow you guys love them will be my beater. I just wanted to see how it all went together and fig out what I will need to reinforce on the baby. The feild we use over here is rough to say the lease. As far as flying her well on a calm day here we have 12mph wind. And my luck the few days I'm off it's not calm. I haven't seen the wind drop below 10 mph in over a year here. That's one reason I'm looking to put all the power in her I can. She will need it. We had a guy use a OS 91 in one I'm almost sure the ARF verson and it was under power in the wind. Normal case if it calls for a 60 -90 then 120 is a good starting place. But if you can get a 140 in it flying is a little better. Chop chop Cow. I think that I will be going with the 26 cc gasser. I'll have my guys fiberglass a new cow for her and try to make it look normal. But we shall see. I will get started on it in mid june. I'm fig about 2 months she should be flying. But I'm not in a hurry and it's done when it's done. Good thing is it stay warm so flying all year round is a +.
Now I'm not complanting a bit. I just can't wait to get back to the states and fly at the old field. When it windy there (anything above 10mph) people ground there planes. That will be normal for me. But flying in a calm day will be a challage.
Now for the overall plan. I was going to put this together for the exp. of building a mustang. I have plans for a 101 inch that I will be starting next year sometime in the fall. Way so long you ask. Well lets say that the this one will currenly take up all the space I have in my room. When I get back home I will have all the room I need to put the beast together. That one will will be my baby. This one sorry to say cause Iknow you guys love them will be my beater. I just wanted to see how it all went together and fig out what I will need to reinforce on the baby. The feild we use over here is rough to say the lease. As far as flying her well on a calm day here we have 12mph wind. And my luck the few days I'm off it's not calm. I haven't seen the wind drop below 10 mph in over a year here. That's one reason I'm looking to put all the power in her I can. She will need it. We had a guy use a OS 91 in one I'm almost sure the ARF verson and it was under power in the wind. Normal case if it calls for a 60 -90 then 120 is a good starting place. But if you can get a 140 in it flying is a little better. Chop chop Cow. I think that I will be going with the 26 cc gasser. I'll have my guys fiberglass a new cow for her and try to make it look normal. But we shall see. I will get started on it in mid june. I'm fig about 2 months she should be flying. But I'm not in a hurry and it's done when it's done. Good thing is it stay warm so flying all year round is a +.
Now I'm not complanting a bit. I just can't wait to get back to the states and fly at the old field. When it windy there (anything above 10mph) people ground there planes. That will be normal for me. But flying in a calm day will be a challage.
#1961
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RE: Top Flite 1/7 P-51 Build
Check this out! I'm looking to putting this into my Top Flight P-40....might fit the P-51 dunno. I know that the weight is almost 5 oz less than the O.S. 1.20 Surpass III with pump, although you will have the added weight of the battery for the ignition. Still...
NICE!!!
whoa....now then this might just fit the bill, but would it fit the cowl???
FG-20 4-Stroke Gas Engine
NICE!!!
whoa....now then this might just fit the bill, but would it fit the cowl???
FG-20 4-Stroke Gas Engine
Key Features
- [*]The first 4-stroke 20cc gasoline engine gives modelers a better option for .60- to .90-size projects[*]Fueled by gasoline to save up to 90% in operating costs over similar nitro power systems[*]Exclusive pump-style carburetor allows for easy starting and operation with less weight than comparable styles[*]High quality, professional finish adds scale realism[/list]
Overview
The Saito Electronic ignition system requires the use of a 4.8- to 6.0-volt battery for proper operation. A capacity of 1000mAh or more is recommended.Specs
- [*]Type:4-stroke[*]Displacement:1.25 cu in (20.52cc)[*]Bore:1.24 in (31.7mm)[*]Stroke:1.02 in (26.0mm)[*]Cylinders:Single AAC[*]Total Weight:30.1 oz (850 g - with muffler and ignition)[*]Engine (Only) Weight:21.87 oz (620 g)[*]Muffler Weight:2.89 oz (80 g)[*]Crankshaft Threads:M8 x 1.25mm[*]Prop Range:15x7–16x6 2-blade; 14x9–15x7 3-blade[*]RPM Range:1,800–10,000 rpm[*]Fuel:Gas oil mix of 20:1 (20:1 is recommended for break in and continuous operation)[*]Mounting Dimensions:152 x 60 x 126mm[*]Muffler Type:Cast[*]Cylinder Type:AAC[*]Starting System:Saito ignition 4.8 - 6V (capacity more than 1,000mAh)[*]Carb Type:2-needle Saito gas carburetor[*]Crank Type [img]{akamaiimageforum}/image/s48.gif[/img] ual ball bearing[/list]
#1966
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RE: Top Flite 1/7 P-51 Build
Glazier, you got it slightly wrong,,,,,,,,,,,,,it's about how much you love her, the week prior to asking permission to order it!!!!!!!
sean
sean
#1967
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RE: Top Flite 1/7 P-51 Build
ORIGINAL: Redwulf__34
Glazier, you got it slightly wrong,,,,,,,,,,,,,it's about how much you love her, the week prior to asking permission to order it!!!!!!!
sean
Glazier, you got it slightly wrong,,,,,,,,,,,,,it's about how much you love her, the week prior to asking permission to order it!!!!!!!
sean
#1968
RE: Top Flite 1/7 P-51 Build
When you succeed at that, see if one could hide the purchase of an $8,000+ Ford crate motor for my Mustang GT (400+Hp normally aspirated) from the Ford catalog! Ha ha ha ha! Just kidding really..I know when enough is enough, but one can still dream?
Oh yea, as an edit...this site did say something about Mustangs? I am not in trouble for off-topic am I? I' ll send my T.F. Mustang photo updates pretty soon.
Oh yea, as an edit...this site did say something about Mustangs? I am not in trouble for off-topic am I? I' ll send my T.F. Mustang photo updates pretty soon.
#1970
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RE: Top Flite 1/7 P-51 Build
ORIGINAL: Riddle4U
When you succeed at that, see if one could hide the purchase of an $8,000+ Ford crate motor for my Mustang GT (400+Hp normally aspirated) from the Ford catalog! Ha ha ha ha! Just kidding really..I know when enough is enough, but one can still dream?
Oh yea, as an edit...this site did say something about Mustangs? I am not in trouble for off-topic am I? I' ll send my T.F. Mustang photo updates pretty soon.
When you succeed at that, see if one could hide the purchase of an $8,000+ Ford crate motor for my Mustang GT (400+Hp normally aspirated) from the Ford catalog! Ha ha ha ha! Just kidding really..I know when enough is enough, but one can still dream?
Oh yea, as an edit...this site did say something about Mustangs? I am not in trouble for off-topic am I? I' ll send my T.F. Mustang photo updates pretty soon.
sounds like a Mustang to me!!! Quite the handfull at that too!
#1971
Senior Member
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RE: Top Flite 1/7 P-51 Build
Got some more flights on the Mustang this weekend, and realized my spring-centered castoring tail wheel isn't doing the job. Imounted a micro servo on the mounting plate, and ran a servo lead through the fuse so I could steer it. Seems to work well.
#1973
Senior Member
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RE: Top Flite 1/7 P-51 Build
Thanks, mon.
I'm even starting to avoid the three point landings - both mains and the spinner.
A long time ago, about 30 years, there was a group of guys that were in the beginning stages of producing a P-51 homebuilt kit, maybe 60-75% of full size, that was to be powered by a 351 Cleveland engine. Don't know if it ever flew, but man was it gorgeous. It was all aluminum, and they had a gear reduction drive with a 4 blade prop. They were having trouble getting a miss out of the engine on the prototype, and I sent them a letter telling them what was wrong. It was the classic ignition wire routing mistake on Ford V-8s of that vintage: running the leads parallel on the two left rear cylinders. They are adjacent in the firing order, and if you do that, the cylinder that fires first induces a voltage into the other one's wire and it burns up more than half of the incoming fuel/air charge, resulting in a misfire on that cylinder. The leads have to be crossed at close to a 90 degree angle to prevent this from happening. Don't know if they took my advice or not. They had a marvelous booklet that I bought, "Of Men and Mustangs". Wish I still had it.
I thought it was really appropriate for a homebuilt Mustang to be powered by a 351C.
I'm even starting to avoid the three point landings - both mains and the spinner.
A long time ago, about 30 years, there was a group of guys that were in the beginning stages of producing a P-51 homebuilt kit, maybe 60-75% of full size, that was to be powered by a 351 Cleveland engine. Don't know if it ever flew, but man was it gorgeous. It was all aluminum, and they had a gear reduction drive with a 4 blade prop. They were having trouble getting a miss out of the engine on the prototype, and I sent them a letter telling them what was wrong. It was the classic ignition wire routing mistake on Ford V-8s of that vintage: running the leads parallel on the two left rear cylinders. They are adjacent in the firing order, and if you do that, the cylinder that fires first induces a voltage into the other one's wire and it burns up more than half of the incoming fuel/air charge, resulting in a misfire on that cylinder. The leads have to be crossed at close to a 90 degree angle to prevent this from happening. Don't know if they took my advice or not. They had a marvelous booklet that I bought, "Of Men and Mustangs". Wish I still had it.
I thought it was really appropriate for a homebuilt Mustang to be powered by a 351C.
#1974
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RE: Top Flite 1/7 P-51 Build
I was given my copy "Of Men and Mustangs"(hardback)by Robert Koehler. He was given it by his older brother, Richard E. "Dick" Koehler. If you have ever watched the movie "Flight of the Intruder". He is the Pilot that the author of the book originally wrote the storyabout. (flight of the Intruder that is)
It's a good read!
It was built by the Short Brothers, and flown by Bob Hoover.
It's a good read!
It was built by the Short Brothers, and flown by Bob Hoover.
#1975
RE: Top Flite 1/7 P-51 Build
Bob,
There was also the Thunder Mustang http://www.thundermustang.com/ a down sized kit built Mustang.
There was also the Thunder Mustang http://www.thundermustang.com/ a down sized kit built Mustang.