RE: H9-F6F Hellcat 60 ARF (Full Version)

All Forums >> [RC Airplanes] >> RC Warbirds and Warplanes



Message

Dakatt -> RE: H9-F6F Hellcat 60 ARF (6/22/2006 4:28 PM)

Yeah, mine were rusty. I supposed it was from changes of tempin shipping, hunidity and all that when shipped in from CHINA.



CorsairJock -> RE: H9-F6F Hellcat 60 ARF (6/22/2006 7:13 PM)

My struts are a rust color (redish brown), unlike the ones which came with my Hangar 9 Corsairs, which are black.

Altho it appears like rust, the surface is smooth and semi-glossy, and I therefor assume it to be either paint or anodizing. I don't think it is rust. And nothing else has that color, including the retract linkages which are black. Seems to me that if it was rust, it would be evident on other steel parts as well.



badz -> RE: H9-F6F Hellcat 60 ARF (6/22/2006 9:35 PM)

pettit...My retracts are just redish brown it's a anodizing coating, they have no signs of corrosion anywhere on them.



tms261 -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 12:14 AM)

Hi Dick, glad you got the Hellcat finally. The gear legs on mine are redish brown as well. Have not really inspected to see why. Put a tach on George Loys Spacewalker today.
He has a G-26 with a Zinger 16 X 8. With my tach got 8300. With another tach we got 8100. I never thought Zingers loaded engines much per prop size. If you were getting
a solid 8500 with an APC 16 X 8, I think the engine will pull the Hellcat okay. When do you anticipate having yours ready to go?

Tim



pettit -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 11:57 AM)

Upon closer inspection, mine are just red colored, not rusty.

The Hellcat may be ready to fly in a couple of weeks. My canopy has a crack in the top. It has to be replaced.

I assembled the retracts last night. How many of you out there can actually see those microscopic E clips that hold the servo arm connectors in place?

And if you can actually see them, how many of those E clips flew off your pliers and are now somewhere in your workshop. rather than in place on the servo arm?




osxpro -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 2:48 PM)

I bought my Hellcat last weekend and got to take it up last evening. I was expecting the typical warbird properties (hard rudder on take off and hot landings) but instead discovered that the plane was VERY easy to take off and the flight characteristics were reminiscent of a low wing traing.
Here's the specs...
Saito 125 with larger 18 oz sullivan tank (the 125 can suck down the
fuel!)
JR 8101 Servos and DS 811 for thr
Hitec 75 BB MG retract servo
Ramtec remote glow driver

One of the first things I did was cut some "breather holes in the lower half of the cowel to help cool the engine down.

The Saito wasn't running perfectly due to the SUPER HIGH humidity but it was running well enough to get the bird in the air. Once it took off it took a little left and down trim & pulled the gear up. Once the trims were set I took it through some loops and rolls. The Hellcat flew like it was on a rail. There were no bad tendancies in flight. I made serveral low passes (a few inches between the prop and runway) and she looked great. She began overheating so I brought it in a decided to cut out one of the dummy radial blocks that was blocking the ventilation to the Saito engine head. I took her up again and that seemed to help with the cooling. Once again, very smooth flying. I was pretty amazed at how slow she came in for landings. As a matter of fact it came in like it had flaps down. once she touched down and slowed a bit I did have to give it spoileron to keep the nose up (it's a little nose heavy due to the Saito 125.
Overall I say she's a great little arf!


Here are more pics from my web site - ALSO J Nall 2006 Pics!!!!!!!!!!!!
http://homepage.mac.com/osxpro/RAMs%20Club/page2/page17/page17.html]F6F
Hellcat pics[image][/image]



Tony Gag Jr. -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 3:05 PM)

osxpro,
How are the retracts? Do you fly off grass or a paved runway?

Tony



pettit -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 3:51 PM)

What was the total flying weight? Not a guess, but measured on an accurate scale



Hellcat716 -> RE: H9-F6F Hellcat 60 ARF (6/23/2006 8:17 PM)

Your outlet should be twice as big as the inlet. I think your outlet is way to small which is why you have a overheating problem. Don't be afraid to open the bottom of the cowl a bit more.



hellcat 1 -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 4:22 AM)

I may be making a mistake but I intend to put a retractable tailwheel in mine plus flaps. This will require 9 servos so I am concerned about the weight, not in flying, but will that landing gear hold up the weight? I have already started to put the tailwheel in. Doesn't look like it will be too hard. I think I will make cutdown areas around the firewall rather than cut the cowl up. If anyone has seen the Holman hellcat, that is what I mean. I don't have any trouble with my Homan Hellcat overheating. On mine I found that the one inch spacing on the retract arm is too much. Mine works much better with 3/4s of an inch. Yes Dick I lost two of the c clips but managed to find one of them. My eyes are too old for that small of work and my pliers aren't small enough.



BQuartucy -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 2:12 PM)

Hellcat 1
I was planing to put a retractable tailwheel on my F6F. How about some pictures of the installation of the tailwheel and the flaps? I'm going to use the robart #121 retract tailwheel, actuated with a servo. Also what engine are you using?



WarbirdFlyer404 -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 5:16 PM)

Hey whats up guys,so far Im pretty happy with my Hellcat and the way it flies.Mine weighs in at 10 1/2 pounds and lands just as smooth as can be. The only problem I have had with it is the cowling came loose not from where I drilled the screw holes but the actual block mount came loose from the firewall.It was flying so good then it just started to slow and I brought her down and found that the prop was rubbing the cowl.I started out with a 14x6 master airscrew and it ran kinda sluggish so I changed to a 13x8 masterairscrew and wow what a difference!I have a Satio 100 in it and now it will do any move you want to.Now about those little clips it took me a while to get those things on mine after looking for them about five times crawling in the garage floor hopng to find them each time one went flying.



Hellcat716 -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 7:13 PM)

Where did you get the extra 2 lbs from? Mine weighs 8 1/2 lbs stock. Using the Saito 100 also.



WarbirdFlyer404 -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 7:31 PM)

I have balanced it on the heavy side at the nose.When the retracts come out and its on the CG machine it is on the bitter edge of falling off. I like flying my warbirds on the nose heavy side it seems to help on the landings.



MOTORMAN37 -> RE: H9-F6F Hellcat 60 ARF (6/24/2006 11:20 PM)

Has anyone taken the time to glass the two wing joints.[8|] I have done that with all the previous arf's of mine. It makes for a considerably stronger wing.[:D] Has there been any wing failures mentioned on RCU.



Dakatt -> RE: H9-F6F Hellcat 60 ARF (6/25/2006 3:31 AM)

No there has not been any failures of the wing as of yet, on RCU anyways. Glassing is great insurance, but I would hope that after all the issues of the Corsair wing, that they would of got their s**t together for this one. I am a firm believer of R & D and when I put this plane together, it looks like they planned this one out well. [:D]



Hellcat716 -> RE: H9-F6F Hellcat 60 ARF (6/25/2006 5:21 AM)

Finished up the Hellcat. Well built ARF and very easy to assemble. No problems with my build. I would highly recommend this warbird.



Hellcat716 -> RE: H9-F6F Hellcat 60 ARF (6/25/2006 5:23 AM)

More pics.



CorsairJock -> RE: H9-F6F Hellcat 60 ARF (6/25/2006 2:15 PM)

Someone sent a PM to me asking where I got the Sig elevator joiner that I used to install concealed elevator linkage in my Hellcat (see post #103).
I have several ( I stocked up), some were purchased at LHS, others ordered directly from Sig. They list for $2.15 each, and are part #SIGSH554. I use a lot of them, I even use them when a simular one comes with a kit (such as Top Flite Corsair) because thay have the long throw (nylon arm) that I desire that allows me to keep short, precise throws on elevators.
So give your local hobby shop some business, and Sig really deserves all the business they can get also, and make your Hellcat a little better looking (as well as other projects).

SO, I take it that a considerable amount of (nose) weight was added to your Hellcat, mbanuelos? Could you be more specific (about how much weight was added)? The thing about making them nose-heavy: it will increase the chances of it nosing over while on the ground, something I've learned to avoid if possible, especially since the fin isn't all that strong.

Hellcat716: LOVE that frontal shot. Now THAT'S how a hellcat wing and landing gear should look, NOT the super wide stance look that another ARF has. I see that you added machine guns too: real nice touch. I eventually plan on doing the same by using cblack coffee stirrer straws, but I just want to get mine flying for now and will add a few more details later.



pettit -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 11:56 AM)

I have a general question on the balance point on the H9 Hellcat as shown in the manual.

If the root chord is 15" and the suggested balance point is 5.25 inches back at the fuselage, that calculates out to 35% of the chord.

I know that the tip is set back 2" from the root and is tapered, but the CG for the whole wing still comes out to about 35%.

With the Zenoah G20, my Hellcat balances at 4.5" back from the leading edge, which calculates to 30%, which I feel is better to start out with.

Any comments?

BTW, the total dry weight is 10.4 pounds.



MOTORMAN37 -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 12:46 PM)

Is anyone comcerned about the strength of the wing where they notched the spar for landing gear clearance.[X(] It does not look very strong to me.[8|] They would have never had to do that, because mine has allkinds of clearance.[8|]



CorsairJock -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 1:38 PM)

quote:

ORIGINAL: pettit
............................With the Zenoah G20, my Hellcat balances at 4.5" back from the leading edge, which calculates to 30%, which I feel is better to start out with.
Any comments?
BTW, the total dry weight is 10.4 pounds.


I think it would fly OK. And I know, 35% does seem a long way back, but it works on their Corsair. The only concern I would have in moving the CG forward is the one I mentioned earlier: it increases the chances of a ground handling mishap, where the aircraft noses over and ends up with the fin and rudder striking terra firma. I wish they (Hangar 9) would make the fins from solid sheet balsa on ALL of their warbirds. It adds VERY liitle weight (no glued joints saves weight), is immensely stronger, and would be easier to manufacture (fewer parts, less glue).

But back to the question: yes I think it would still fly good, but I would look into moving the CG back a little farther if possible, say 5". Can you re-locate the battery?

As for the question about wing strength: see an earlier post where I stated that I had installed a 1/4" diameter carbon fiber tube in the center section, stretching across the retract bays. It added about 11 grams of weight, but I'm pretty sure my wings wont be coming apart.


I'm nearly finished with mine, and it WILL be ready to fly at a warbird event in Lansing, IL this coming weekend. With Saito .91 and Master Airscrew 3 blade 14 x 7 installed, Robart mechanical retracts and RoboStruts, it looks like all up weight (minus fuel) will be about 8 1/4 lbs.



pettit -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 1:46 PM)

I already have the battery as far back in the fuselage as I can reach. The ignition battery is mounted to the rear of the fuel tank. I could move the ignition box behind the firewall, but I am afraid it would be too close to the radio equipment.

I can get it to balance at the 5 1/4" point, but it will take almost 4 ounces of, dare I say it, lead, at the very tip of the tail.

Two ounces will balance it at 5", and I may try that at first.

Thanks for the info.



MOTORMAN37 -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 1:47 PM)

Corsair Jock,
You talked about the arrow shaft, but if you run it under the bottom spar, doesnt it interfere with the wing joiner.[sm=confused.gif] Can you make a diagram and post it. I have all the long bits and lots of carbon laying around. Because the way I understand what you did, you have a an arrow shaft running the full length of the center section sitting on the spar going over the area where the cut out is. How do install the joiner then as that also goes there. Did you make a new joiner, or did you cut the little tab off of the joiner and notch it for the arrow.[sm=confused.gif] I too was looking at that last night trying to figure it out.[8|]



Larry S -> RE: H9-F6F Hellcat 60 ARF (6/26/2006 2:00 PM)

CorsairJock,
That warbird day at Lansing, is that the one at Thron Creek? If so, I'll be there, like to meet you.
Larry



Page: <<   < prev  5 6 [7] 8 9 10 11 12 13 14   next >   >>  

Valid CSS!




SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.
2.296875