budmo

Thanks Chad

Did you go to the 1/8th Air Force event they just had? I went both days.

The diameter is 19" I built it from scratch from an article I read on TomPierce.net
I built it for my Jemco corsair, its a bit small for the Top Flite, but close enough not to build another one.

-John

Chad Veich

My Feedback: (60)

I went on Saturday John. I'm a 1/8 AF member and rarely miss one of our events. Your scratch built scale prop looks great. I need one 19.5 inches for my Hellcat but 19 would be close enough for me! I see that Aerotech advertises a 1/8 scale Ham Standard prop but I would like to see what it looks like before shelling out the $60! I thought maybe yours was the Aerotech unit. Let me know if you plan to attend the March event and I will be sure to look you up so we can put faces to names. I'd love to get my Hellcat together with your Corsair when they are done seeing as how they are the same scale. Would be a nice photo op!

saramos

This place has offset hinges.

http://www.radicalrc.com/shop/?shop=1&cat=226

budmo

I went on Saturday John. I'm a 1/8 AF member and rarely miss one of our events. Your scratch built scale prop looks great. I need one 19.5 inches for my Hellcat but 19 would be close enough for me! I see that Aerotech advertises a 1/8 scale Ham Standard prop but I would like to see what it looks like before shelling out the $60! I thought maybe yours was the Aerotech unit. Let me know if you plan to attend the March event and I will be sure to look you up so we can put faces to names. I'd love to get my Hellcat together with your Corsair when they are done seeing as how they are the same scale. Would be a nice photo op!

[/quote]

Thanks! That sounds good, hopefully this Top Flite will be ready by then, if not I can bring the Jemco.


Thank you saramos.. I think I figured out the main gear door hinging issue. I think its not working because I need to move the hinge line out from the bay by at least 1/8" because of the curvature of the airfoil, maybe even more like 1/4".

-John

budmo

Hey Chad

CorsairJock

My Feedback: (90)

Hey guys, this isn't a chat room. People are having a hard enough time locating useful info in this thread, they don't need chat which is completely unlrelated to the subject (Top Flite Corsair) to have to sift thru too. Please consider using "PM" or email.

Ice5

Thank you.. Jock!

Chad Veich

My Feedback: (60)

Roger that Corsair Jock, my bad. And I know better too!

acerc

Corsair jock, from what I've seen you seem to be the man. Just the man to answer a question for me.
What is the engineright thrust on a full size and what would you recommend?
I'm finishing up a TFGE 88inch and it called for 3 degs, look's, not so good to me.

Thank's

CorsairJock

My Feedback: (90)

Most, if not all fighters of WW II era did not have any engine offset. Instead, they had FIN offset. Corsair is one, Mustang another, but I don't remember the numbers, maybe 2 deg (to act as 'right rudder').
Also, most (including Corsair) did not have downtrust (Mustang maybe did?). Thet DID have pos wing incidence. The early posts cover most of this.

I like just a slight amount of right thrust offset, maybe 1 deg., just enough to err in the correct direction. You MUST be a good rudder pilot if you are contemplating removing any or all right thrust, you will need to apply right rudder anytime you add power while aircraft is at reduced speeds.

acerc

Thank's Corsair Jock.

saramos

From the Erection and Maintenance Manual for the F4U-1, 1C, 1D, the main wing incidence is +2 deg. Horizontal Stabilizer is +1.25 deg, and Fin offset is 2 deg.

There is no offset or downthrust of the engine. The centerline of the prop shaft defines the vertical and horizontal reference of the fuselage. That line exits the rear of the plane along the tail gear door about 8" in front of the arresting hook. The tip of the tail is about 11 5/8" above that line. This line is the reference for the wing, stab and fin offsets.

Scott

acerc

Thank's Corsair Jock and saramos, I think I'll leave it at 3 for now. Did'nt know about the fin offset, next time.
Any of you guy's that have an abundance of knowledge and a wealth of info ever think of putting it into a cd I'd be first in line to buy it.

budmo

I'd like to share a little something I recently figured out on flying props.

Because glow engines turn such high RPMs, it occurred to me that painting 1 prop tip yellow instead of both, the effect would be closer to scale.
So I painted the front prop tip yellow on one blade and the back of the opposite blade to keep balanced.

Looks better to me.


http://www.youtube.com/user/j5match?feature=mhum#p/a/u/1/r9nGpNix6cg

saramos

Neet effect.

budmo

Hey everyone-

What is the best way to hinge the tailwheel doors?

-John

scratchbuilder46

I don't have a camera to take pictures so a written discription of how I did it will have to do. I got some miniature hinges from Nelson Hobby Supply. If I remember they were the 3/8 width ones. Where the stringer for the aft part of the fuse goes to the tail, I substituted a couple pieces of spruce to anchor one side of the hinge to. The one thing to do is substitute a smaller dia. wire for the hinge wire so the doors will swing free and easy. I used 00 size button head allen screws to hold one side of the hinge to the spruce and the smallest nut and bolts I could get from Microfasteners to hold the other side of the hinge to the door. If you order the 00 screws, don't forget to order a couple of allen wrenches along with them. The trick will be opening and closing the doors. I am having a heck of a time getting the door to close without hitting the axle of the tail wheel. I think I will have to move the closing point closer to the pivot point of the tailwheel. I am using elastic thread to pull the door closed, just havn't found that sweet spot to get things to work. I don't want to use another servo to drive the doors as it is really tight back there and I don't want to go chopping things up. It will work out somehow. Let me know if any of you come up with something in the mean time......

budmo

Thanks SB46. Has anyone tried offset hinges?

Ice5

I have on my T-34 and I will be using them on the F4-U.. http://www.bvmjets.com/Pages/Catalog/carbon1.htm #BVM5525
The best to use, hands down. Split or together I have used them both ways.

Brendo

Hi All,

budmo

Whenever I've thought about rotating the engine like that I worry about lateral balance.

I did some work on my baffle/dummy P&W R-2800..

I-fly-any-and-all

My Feedback: (1)

great looking bird. There is a guy on ebay who amkes re-production aluminum spun cowls for the 1/8th royal kit and it would match yours deinately.
I bought one for my royal kit and it is dead on!
http://cgi.ebay.com/Royal-Marutaka-B...item3ef5beb3bd

I know the link is for the b-25 cowls but he also does the .60 sized 1/8th royal corsair.

Brendo

Budmo,
I did do a lateral balance before and after the engine installation. For some reason the left wing is still heavier than the right after balancing with the engine installed. Not sure why that is.

I-fly-any-and-all,

Thanks. Great looking cowls but he doesn't have anymore listed. Not far off doing the first cowl out of my mould so I hope it works.

Cheers
Brendan

I-fly-any-and-all

My Feedback: (1)

message him on ebay he has several made up.

DanS

My Feedback: (1)

I have this kit on the shelf and will be starting it shortly. I am getting items together and wondered if anyone has looked at the ESM retracts for their 74" Corsair and if they could be fit into the TF Corsair? I'm leaning toward the DLE 20 for power and would like to know if anyone has used it in this plane yet? Thanks for all the excellent info in this thread! I will be putting much of it to good use