CARF SPITFIRE ASSEMBLY and SCALE DETAILING - Page 3 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-02-2016, 09:37 AM   #21
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING


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very nice so far Brian . the spitfire sure does have some nice lines .I see it has the more scale looking hinge system , the surfaces look amazing with those hinge lines. Brian you printed off a copy of your color code system for me and I cant find it ,I want to start using that system on the plane I am building . if you don't mind I will get another copy from you thanks Roger
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Old 05-02-2016, 01:24 PM   #22
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

SERVO WIRE LEAD COLOUR CODE SYSTEM

ROGER here is my system where I use tiny electrical ties (4) to indicate what the function of the lead is when so many can get buried.

Turquoise = Throttle

Dark Blue = Choke

Red = Right Aerilon

Red Red = Outside Right Aerilon

Yellow Left = Aerilon

Yellow Yellow = Outside Left Aerilon

Purple Red = Right Flap

Purple Yellow = Left Flap

Black = Rudder

Black Red Right Rudder

Black Yellow Left Rudder

Green = Elevator

Green Red = Right Elevator

Green Yellow Left Elevator

White = Power to Receiver

Lime = Ignition

Tan = Gyro Input

Pink = Lights

Olive Green = Telemetry inputs

Tangerine Red = Right Landing Gear

Tangerine Yellow Left Landing Gear

Tangerine Black = Tail gear

So in general the first colour is for the main function, and the second colour red, yellow or black indicates the side its controlling.
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Old 05-02-2016, 08:00 PM   #23
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

Taking a short break from the Spit build.

Ramjet helped tonight with the retract installation fit. Thanks roger.

Jim Bisson and I are headed to Joe Nall for some great flying and weather.

I will get back at this in 12 days.
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Old 05-02-2016, 09:13 PM   #24
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

No problem Brian it was fun and like always I learned a few things . I still can't believe that engine , all I can say is WOW that thing is beautiful ,how do you put a cowl on a engine like that . Brian did you post a picture of the engine yet . The spit detail is very nice, it even shows buckling in the sheet metal panels . The Canadian desert scheme will be a nice touch also. Take a lot of pictures at Joe Nall . cheers Roger
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Old 05-15-2016, 08:14 AM   #25
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

ELEVATOR CONTROL SYSTEM

Well I'm back from 11 great days at Joe Nall. There were four other Spitfires (3 from Germany) that I got to watch fly and take lots of pictures on how each one did some unique things to their planes.

The control of the elevator is done with a long carbon fiber shaft that has two ball links attached to it.
I personally like to use the SDS carbon fiber tray to hold the servo and use the auxiliary ball bearing pivot to reduce the stresses on the servo gear train.

These are available at SDS Hobbies SKU SACF20111 for $17.29.

I am using Savox Brushless 2270 servos on all of the flying servos. I have had great success on all of my other planes using them and they don't draw a lot of power during the flight. The torque for this servo is 444 oz. inches at 0.12 seconds.

I did learn that the elevator on this Spitfire design is very sensitive and you need a lot of Expo around 65%. On landing about 1mm of down is required when the flaps (really an airbrake) are deployed. Two of the German flyers (who are part of a massive 9 plane war bird flying event at the noontime show) both use some Butterfly in their aerilons during landing. There is no mention of this in the Carf Manual.

Here are the weights of the items added to the Spitfire.

Control Rod with 2 Ball Links 52 grams
Elevator CF tray with Control Horn 32 grams
Servo with Arm and 2 Ball links 80 grams

http://www.sdshobby.com/catalogsearc...SACF2011&cat=0
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Old 05-15-2016, 03:12 PM   #26
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

FUEL TANK

The Monforton book on page 2.31 lists the location and size of the fuel intake in the fuselage along with the two breather holes. I tried to simulate the size and shape with the existing fuel dots that are available. As this is a Sports Scale version, I'm not worried that the fuel dot is a 1/32 inch too big.

Thunderbolt RC sells a new Seacraft fuel bottle holder that worked very well for my situation. I was able to shape it to the fuselage shape and I held it in place with Hysol 9462 Epoxy. It will never move!

The mounts only weigh 32 grams. http://www.thunderboltrc.com/index.p...oducts_id=2155

I was able to put the fuel tank exactly over the CG for this airplane, so I should have no trouble with the trim as the fuel is used up. I'm using a 50cc tank for the 77cc 4 Stroke engine, but if I need more it is easy to add a Pepsi 710cc tank.

I personally like using the quick disconnects from Thunderbolt, it makes it very easy to remove the tank in seconds. The one on the line to the engine even has a quick shut off so if there is any tank it won't leak out. http://www.thunderboltrc.com/index.p...oducts_id=1300

Total weight for the holders, fuel tank and all the fittings was 176 grams.
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Last edited by BAMDFISHER; 05-15-2016 at 03:27 PM.
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Old 05-23-2016, 09:56 PM   #27
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

Wow! Just spent the last couple nights checking this out. Unbelievable workmanship.


Quote:
Originally Posted by BAMDFISHER View Post
For those interested in reading about "The Ultimate" in scale building of a Spitfire go to RC SCALE BUILDER and read Detlof Kunkel's notes on his 1/4 Spitfire MK VIII using Mike Reeves kit. He started the build in April 2010 and is still at it in April 2016.

It's a fascinating read!
http://www.rcscalebuilder.com/forum/...886&PN=1&TPN=1
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Old 05-30-2016, 08:04 AM   #28
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

TAIL WHEEL BRACKET

I have had too many visits to three hospitals and I don't know how many doctors to let me work on this project. But finally I have been able to get back to it.

I decided to go with a Steerable Tail wheel and opted for one made by Shindin Machine http://www.shindinmachine.com/SPITFIRE/SPITFIRE.html.

This tail wheel uses the same steering technique as a trike nose wheel.

My first step was to install two aluminum bushing mounts to control the 5/32" steering rod. These were put in place with more Hysol EA 9462 Locktite glue.

Next, I made the vertical support plate out of 3/16' birch plywood. As you can see there are a lot of holes in it for the two pushrods and for the steering arm. Making this part takes a lot of time getting the correct profile shape. I first made a card stock template, followed by a balsa template and then a thin plywood template. Once that I was happy that I had the correct profile shape with the holes in the proper position and large enough, I made the final 3/16" birch former. I sanded the sides at a 6 degree taper so that it would fit snugly against the fuselage.

Total weight for just the former and its supporting hardware is 39 grams. This does not count the tail wheel and the control rod!

Next is to build the tail wheel servo box.

For some reason I can no longer attach my small sized JPEG photos like I have done for years. I was able to upload them on two other sites.
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Old 05-30-2016, 02:23 PM   #29
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

Quote:
Originally Posted by BAMDFISHER View Post
For some reason I can no longer attach my small sized JPEG photos like I have done for years. I was able to upload them on two other sites.
We are all having this trouble - some kind of technical problem that the admins are working on.
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Old 05-31-2016, 07:31 AM   #30
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Re: CARF SPITFIRE ASSEMBLY and SCALE DETAILING

Photos for the tail wheel post the other day, sorry they are not in the correct order.
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