ORIGINAL: irocbsa

I bet that 40 could handle this one:

http://www.troybuiltmodels.com/items/BP178-4.html

If not, there is a 16 X 8 with the Mustang blades that should definitely work.

ORIGINAL: vpresley

Hi

The problem you are going to have is efficiency of the prop. You will find a 2 blade gives better thrust than a 4 blade. Not sure you want to sacrifice thrust for looks of the prop, but that's your choice.



Vince

ORIGINAL: MX240

Wow typical beginner questions....dreaming big.
If like you say....I've been out of the hobby for a few years.....you better start with a low wing trainer type warbird first.
As having had a few Mustangs in my fifty plus years in the hobby including the Hanger nine 51 a 30-35cc would be as big as you could go.
And that Mustang is a handful for any good pilot.
The landing gear is too far back in the wing so, any larger engine you will be on your nose most of the time getting to the runway.

ORIGINAL: Whistling Death

Why are you obsessing over the scale look and size of the prop for a Hangar 9, 1.50 P-51?
The only time you are going to notice the prop is a 4 blade is when the engine is shut down.

ORIGINAL: Bikerboy53

Hey all,One more question (this one's a doozy), not sure if this is even possible, but after researching a bit, I'm finding that the actual aircraft (P-51D) dimensions translate to somewhere between 1/5 and 1/6 scale in regards to the H9 1.50. That said, the actual aircraft sports a 4 blade prop that measures 11' 2"....scaling that down to at least 1/6 comes in at just over 22 inches....after searching for gasoline engines I'm finding that is going to take at the very least 50cc's to swing a 4 blade prop that big...the DA-50 or DA-60 would just about fit the bill for that....the only thing that concerns me is stress on the fuse with an engine that big....NOW....is this reasonable?...or am I out in left field here?Thank you in advance

ORIGINAL: ThunderBoat42

I looked at that as well. The DLE 85 and the 19" biela was used in an Aeroworks very well. Big dollars but flew great.
The closest to scale I've seen fly WELL is the Aeroworks and the 17.25/YS170 or 175 and the OS200/APC 15x12 in the Top Flight 60 arf. The YS is comperable in weight to the Saito 1.20/1.50 range.

Judging from some of the post ... I'll probably get blasted by someone ... but thats ok.. it's my opinion and what I have seen. Your asking the same questions I was a year ago. lots of research and trials ... thats what worked/works. (for me) My career has been in doing what others are quick to say cant be done.

The gear on the H9 150 P51...... , just shim the gear forward a couple a degrees when extended.

Here is Freds aeroworks
<cite style="color: rgb(0, 153, 51); font-style: normal; display: inline-block; margin-bottom: 1px; font-family: arial, sans-serif; white-space: nowrap; font-size: 14px !important;">www.youtube.com/watch?v=RlHdJQL4AGE</cite>‎

www.youtube.com/watch?v=N65U10CJFv8
The Aeroworks is Expensive BUT does come with GEAR installed that is quality.. sliding canopy etc. Add up whats needed on others and you'll see its a value if you want to go that route.

the TOP FLIGHT Giant P51 has been flown with a 4 blade on a G62 very well. I think it was a 19 or 20" Zinger 4 blade prop on it ... was trying to find the post with pics and the video. but cant remember where it is. Again, add 500 for the gear.

Here is the Top Flight / OS 200 on a 15.5x12 - APC 4 blade. (this is not enough prop for the YS 170 or 175 according to APC) - this is a great priced plane but I added Robart eletric gear and struts that were an additional $400 (more than the plane LOL)

in Short, the H9 flys very well.. there is a thread on here somewnere. The 4 blade can be close to scale and it's a Mustang. the TF 60 arf also flies very well and well behaved evenwith big power... so pic your budget and size and GO for it!!! The YS 170 or 175 and the Biela are a known working combination without a lot of weight... Ideal for the TF or the H9 150 your looking at.

ORIGINAL: ThunderBoat42

I am using the Biela 17.25 x 8 from Troy Built Models. Both Biela and TBM are (in my opinion) excellent companies and the prop quality is beautiful. Power is a YS 175 - yes I like glow and love the YS engines. They are a ton of power with a fantastic idle. The idle rpm with the 4 blade is very reliable very low. Thats after a couple of minutes with no heat applied. Natually, in the plane it will be higher. Central Hobbies has the new sport version at about $600.00. They are comperable in weight and have a super charger system that keeps the mixture constant. Once set, your done.

4 vs 2 and all that... this combo has more thrust than you'll need. yes, if you want to be a speed demon, then a higher pitch 2 blade. I like scale personally and will gladly sacrifice speed for that big 4 blade in flight. After a lot of time and consideration on power choices.... I was rite back to my trusty YS with all that power. Starting? Simple, apply heat, grab spinner and flip backwards,,, it will hit and start every time. no starter or fingers in prop.

Just my 2 cents worth.

ORIGINAL: skillet92

I have the H9 mustang and have a dle35 in mine I have xoar 20x8 and after I get used to it a 19x10 for more speed. This is a good combo. More power than you will ever need. It fits good and balances great. I also wants a 4 blade but ran it size and performance issues. I settled on the ww2 xoar props. When running you see the yellow tips and they look good. But like has been mentioned. When running you can't see the blades anyway.

ORIGINAL: airraptor

Biker I know you are trying to make this one scale but if you realy want a scale stang I would look other airframes or tearing that one aprat recovering and building in the scale stuff. I wouldnt pay for a scale gun kit. they will cost money and will have more scale detail then the rest of the air frame. IE it will look off. Just drill some holes in the leading edge and add some 1/8 wood dowls and then paint them black. get some black chalk and rub a little around the guns and hit with come clear and call it good.