Question70: "Hello Richard, I have been rc modeling for some years now, I just recieved my first giant scale plane for x-mas, a top flite p-47. My wife got the combo kit from tower hobbies that included a super tiger G-4500. While planning out the building supplies for this plane, I went to my local hobby store where the tech advisor told me about the g-4500. He said that they are hard to start when inverted, and loose power at altitude and while performing aerobatics. Is this the best engine for this set up or is there another option? I hope I didn't end up with a $300.00 paper wieght. Scott Cooker"
Richard: "Hi Scott, for the Top Flite giant P-47, I would recommend going with a gas engine, such as a Zenoah G-62. Many pilots have used this plane/engine combo with great success. The G-62 runs on much cheaper pump gas, easier to start when inverted, and provides plenty of power for the P-47."
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Question71: " Hi Richard I have enjoyed the info on your site, thank you. I have a H9, P51 Mustang 60 size. Flies great, not a great kit to assemble but worth it in the end. Retracts, even although upgraded by H9, I replaced as I found them very unstable with not much tracking possible on the ground due to weak struts. I made my own, but due to the fact that they now don't have any spring in them, are prone to bending backwards at the slightest bump even although they are 5mm rods. Any retracts in the shop require an additional wheel axle to be attached, which increases the weight of the wheel assembly, retract servo hitec battles to pull them up. Suggestions please. Thanks, Rob"
Richard: "Hi Rob, You can cut off the stock wire struts and attach shock absorbing Robart RoboStruts to them for strength and stiffness. As for the retract servo, I would go with the higher torque JR low profile retract servo. By the way, I'm using Robart air retracts in my H9 Mustang with great success."
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Question72: "Hi Richard, You suggested in your Q and A that a smoke system would be fine in the corsair 60 by H9 I assume that it would be fine in the H9 mustang too? What smoke system would you suggest? Thanks, Rob"
Richard: "Yes, the smoke system would be fine in the H9 Mustang also. Any compact and light weight smoke system would do."
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Question73: "Good Morning Richard, I have a VQ P40 Warhawk that I am building, Problem that I have is that the fuel tank outlet is much higher than the engine inlet of the inverted mounted ASP 90 four stroke. This cause the fuel to gravity feed into the carburetor and to flood the engine on starting or low idle position. Any advice will be appreciated. Thanks, Sarel"
Richard: "Hello Sarel, You can use a Dremel tool on the firewall to lower the fuel tank outlet. You can also lean out the low end of the engine or install a Cline regulator to prevent flooding on starting or idling. Richard"
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Question74: "Im a beginner, got impatient and tried to fly my hanger 9 p51 pts after just 5 minutes of training on a buddy box) Well needless to say, I crashed it. (Learned a lesson the hard way $$ “Direct hit on a pine tree,” This business of flying RC is allot harder that is looks. But I want to stick with it because I know that I love this new hobby! Now Im trying to fix it. Are you aware of any plans available for the layout of the wing, I messed up the left wing panel leading edge. Just trying this first before I just buy new wings. Maybe I need a trainer that is easier to fly."
Richard: "I don't think there are plans for the H9 P51 PTS. You can try to contact Horizon Hobby, but I'm afraid you will need to get a new wing. Keep on practicing because eventually, flying the H9 PTS is second nature."
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Question75: "I am currently assembling a CMP 58" Corsair with an OS 70 four stroke. The plans show to mount the engine 2o down and 2o to the right. However the firewall is angled upward and to the right as it is. Do I still need to mount the engine as the plans suggest? Thanks Jerry"
Richard: "Hi Jerry, If the firewall already has down thrust and right thrust built in, then you can just mount the engine per instruction."
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Question76: "Richard, I have been flying for over 14 years and have always liked Warbirds and since our recent Warbird meet I've really taken an interest. I fly planes in the 40cc to 62cc range and I'm looking for an F6F Hellcat Or F8F Bearcat that I can fit a G62 into. Is there such an ARF out there for an engine this size or is this a build only? Thanks. Bob Alspaugh"
Richard: "Hi Bob, I'm afraid there isn't an F6F Hellcat or F8F Bearcat ARF big enough to house a G62. The World Models has an 80" Zero ARF that can take a 40-45cc gas engine. Top Flite has a giant scale P-51D ARF that can take a 50cc gasser, but some people have used a G62 in it. Richard"
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Question77: "Richard, I have NIB OS120S-E Surpass. Which Hanger 9 warbird would BALANCE and FLY best with this engine? THANKS, Ressie"
Richard: "Hi Ressie, I'm afraid the OS120S-E is slightly too heavy for most Hangar 9 .60 size warbirds. This engine will fit in the P-40, P-47, P-51, and F6F, but you will need to add tail weight. Richard"
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Question78: "I bought a Hangar-9 P-47 ARF because I don't really have the time to put in to a build like I use to. It is very nicely put together but it lacks detail and by that I mean when people look at my plane I want them to look at it think is that real? I have some 3 views charts that aren't as good as I'd like but it's a start, a personal nose art that I'm going to put on it, and I wont to make it look weathered. Now here is my problem: I don't have any idea how to draw in the panels, rivets, or create a weathered look. Can you make direct me toward so really good and detailed 3 view charts? And can you tell me how to apply the draws and what then protect them from wearing off or possibly put me in contact with some one how can help in this department? The only reason I asked you this is because you fly the real P-47 and probably can tell me a thing or two about this plane that know one else can. My Grandfather was a mechanic in the air force at the same time that you were a polit, and the P-47 was all he talk about and now is all I can think about. That's enough about all of that. If you can help great and if not thanks for at least ready. Thanks, Jeremy"
Richard: "Jeremy, There are two publications you can use as references when drawing your panel lines: Squadron/Signal P-47 Thunderbolt in Action and Squadron/Signal P-47 Thunderbolt in Detail & Scale. You can also get a 1/48 scale plastic model of a P-47 to use as a reference. You can use a panel line pen to draw your panel lines on the covering. However, the ink is not fuel proof, so you will need to protect the panel lines with a coat or two of flat clear. Richard"
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Question79: "Hi Richard I have enjoyed the info on your site, thank you. I have a H9, P51 Mustang 60 size. Flies great, not a great kit to assemble but worth it in the end.
Retracts, even although upgraded by H9, I replaced as I found them very unstable with not much tracking possible on the ground due to weak struts. I made my own, but due to the fact that they now don't have any spring in them, are prone to bending backwards at the slightest bump even although they are 5mm rods. Any retracts in the shop require an additional wheel axle to be attached, which increases the weight of the wheel assembly, retract servo hitec battles to pull them up. Suggestions please. Thanks Robert Groves"
Richard: "Hi Rob, You can cut off the stock wire struts and attach shock absorbing Robart RoboStruts to them for strength and stiffness. As for the retract servo, I would go with the higher torque JR low profile retract servo.
By the way, I'm using Robart air retracts in my H9 Mustang with great success.
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Question80: "Who makes a corsair arf or kit corsair that the saito 5 cylinder will work in? James Holloway"
Richard: "I haven't seen a Corsair ARF big enough for the Saito 5 cylinder radial. As for kit, Top Flite 86.5" span Giant Scale Corsair is the ticket."
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Question81: "Hello Richard. I bought a CMP ARF Zero Fighter 71" and I want to put mechanical retracts on it with oleo struts. The thing is that the Zero undercarriage bay has a smooth angle towards the edge of attack of the wing, and then retract wire does not fit with it. The retract wire can be slightly bent, but not the oleo strut. Is there any solution for this? I also would like to know which measure of mechanical retracts and oleo struts should I buy for this model, and which is the best election, not spending much money with robarts or CJ retracts. As I'm from Spain and we don't use inches, I'm going mad with measures! So please, if you could tell me exactly the measure (in inches) and model (straight or offset oleos) I have to buy, I'd be really pleased, Thanks a lot, and congrats for your page. Anton."
Richard: "Anton, You don't need to bend the oleo struts. You can just bend the wires on the mechanical retracts that the oleo struts slip onto. As for mechanical retracts, get the .60 size version made by Great Planes. As for struts, you can go with either straight or offset in 9.5mm diameter or 11.1mm diameter. Both come with wire adapters for mechanical retracts."
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Question82: Hello Richard, I have just started work on my new H9 Corsair (60 size). I want to give the mechanical retracts a try with the JR servo that has a much higher torque rating than the HiTech. I also want to add struts to the stock set up. I have read through several build threads and recall others with a similar set up, but I can’t find whether they have used the 3/8 or 7/16 struts?? I was going to use the 3/8 and contacted VQ Warbirds, but they recommended the 7/16. They are out of stock on the 3/8 and maybe this is why they recommended the 7/16?? Thanks for your time, Scott
Richard: Hello Scott, You may use either 3/8" or 7/16" struts. The 3/8" struts will be lighter and thus will pose less stress on your mechanical servo. On the other hand, the 7/16" will be more stout.
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Question83:
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