A-10 Warthog, my first Cartoon Fatty. - Page 19 - RC Groups
Thread Tools
Oct 23, 2012, 09:43 AM
Addicted to building...
Freddie B's Avatar
Making pushrods and the tubes to guide them. I collect small cocktail and coffee stiring straws and join them, using the red, red and white striped, and white ones shown because they are ever so slightly a different size. Then I use a small section of Q-tip tubing (purple on these) at the entry and exit points to really toughen up the ends so they will never split and they also act as a good bearing surface!

Hey Joe, talk about cheap, these straws are everwhere and stores put them out for us model builders in ample quanity.


Fred


Sign up now
to remove ads between posts
Oct 23, 2012, 09:52 AM
Addicted to building...
Freddie B's Avatar

So to add the elevator and rudder servos I fashoned a tray out of a paint stirring stick. Uh-oh, more free stuff Joe! Basswood at it's finest! I put these up front because I want to make sure the CG comes out closer on this short tailed bird!

I mounted the servo tray sort of strange in that the servos mount and adjust from the top, but are deeper than the crutch so my pushrods would follow the crutch floor and clear the under wing area best. If maintenance is needed later it will work out but might be a bit tight!

Fred


Oct 23, 2012, 09:56 AM
Addicted to building...
Freddie B's Avatar

You can see the the pushrod and snakes install in this photo, and the bell crank hookup. I also made a tube to guide my 72mhz RX antenna. Yes I am using my old radio on this builld because why waste good equipment! Cheaper if you already own it, right!

Fred

Oct 23, 2012, 10:02 AM
Addicted to building...
Freddie B's Avatar

Last I added the elevator pushrod and servo, making all clearance cuts and such needed to install, adjust, and for working room. E-Z connectors are used to aid in maintenance and adjustments. Coming along now and shouldn't be long!

Fred


Oct 23, 2012, 10:28 AM
Registered User
cracksmeup's Avatar
If there is one thing both of us are sure of freddie is that both of us are dam cheap.lol I buy at the flea markets and garage sales so much i try to haggle the price down at real stores freddie.lmao
Oct 23, 2012, 12:04 PM
*GRAVITY* I hate it :(
Sparken57's Avatar

OLD A10 thread


DBL post sorry
Last edited by Sparken57; Oct 23, 2012 at 12:11 PM.
Oct 23, 2012, 12:08 PM
*GRAVITY* I hate it :(
Sparken57's Avatar

OLD A10 thread


Hay Fred have you seen this old thread started by Rusty-Gunn.Started in 2008 last post May this year.this is a build buy a guy.JonesyMj I think on page 7.I hope the link is right. anyway Happy Building. Ken
https://www.rcgroups.com/forums/show...&postcount=100
Last edited by Sparken57; Oct 23, 2012 at 12:13 PM. Reason: correcting name JonesyMj
Oct 23, 2012, 12:40 PM
Addicted to building...
Freddie B's Avatar
Quote:
Originally Posted by Sparken57
Hay Fred have you seen this old thread started by Rusty-Gunn.Started in 2008 last post May this year.this is a build buy a guy.JonesyMj I think on page 7.I hope the link is right. anyway Happy Building. Ken
https://www.rcgroups.com/forums/show...&postcount=100
Hey Ken! I did not see that one. Pretty col and looks to be a fairly quick build. Looks like there may be hope for my over weight contraption!

Thanks so much for sharing and the link!

Fred
Oct 23, 2012, 12:42 PM
Addicted to building...
Freddie B's Avatar

Next I closed up the top of fuselage, aft of the cockpit. I shouldn't need to go back into this area for the life of the bird. X-Acto if I'm wrong!

Fred



Oct 23, 2012, 12:53 PM
Addicted to building...
Freddie B's Avatar

Cooling air and my solution......



So I will have 20 anps on tap at WOT with my bird, so I have an older FMA ESC that is rated at 30 amps. Since it will be my preferance to keep the gear enclosed and I only need one ESC to run 2 brushed motors, I decided I would also like the ESC to be forward of the CG. I will then be able to cool the ESC and LiPo battery all with one method.

If you have followed my builds you will know I love using the NACA Submerged Intake (and reversed for exhaust). Very low drag from this and very effective at it's functioning. So I am including a photo of how to make your own, and showing you how easy it is to make one of these babies! You can print out the Intake sheet and use a reduced or enlarged copy to cut out the intake shape after figuring what size you want.

We cut out the shape and for this I used 3mm depron I had around. Then we need two angled side walls, as I call them ramps. Follow along and see how easy this really is.

Fred


Oct 23, 2012, 01:02 PM
Addicted to building...
Freddie B's Avatar

So I use the rolling pin method to pre shape the ramps to fit the intake cutout. I then glue the ramps to the inside edge of the intake cutout (CyA here was quick and easy). Then we just glue and pinch the intake shape floor against the ramps. Sand it flush, and we are done!

Fred


Oct 23, 2012, 01:07 PM
Addicted to building...
Freddie B's Avatar

Since this section is the rear, bottom skin, and it also sits up against the trailing edge of the wing, I wanted similar ding and wear protection like I have been adding throughout the build. I epoxy a thin strip of manila folder card stock to the edge of the shin that will butt up against the wing. Then I did a layer of 3/4 ounce glass and epoxy, sanded the excess off. Finally I also put a layer of silkspan and glue over this so the finish will remain the same throughout. Now when I glue this skin on, I won't have to struggle to cover this inside edge.

Fred


Oct 23, 2012, 08:51 PM
Registered User
with your homemade push rods does a straw slide inside another straw or does the metal wire run the whole length. Maybe I missed it but what kind of wire do you use. Again another informative thread.

Thanks
Oct 23, 2012, 09:04 PM
RC Adddict
Wilfor's Avatar
Freddie what plane is that your hiding on the side of your tool box ? i didnt think you used KF airfoils anymore
Oct 23, 2012, 10:15 PM
Addicted to building...
Freddie B's Avatar
Quote:
Originally Posted by denverone
with your homemade push rods does a straw slide inside another straw or does the metal wire run the whole length. Maybe I missed it but what kind of wire do you use. Again another informative thread.

Thanks
Straw has a 10mm section (coupler) added at end, then another straw is inserted in that. And then if you need more, another coupler, then straw. Coupler at both ends with a Q-tip in that. Hope that makes sense???? Maybe look at photo after reading this paragraph?

Wire is standard Piano Wire, called Music Wire most often. It is a hardeded steel wire. K&S sells 36" lengths at the hobbey store, and online stores. I used a 1mm (.039" dia) for rudder, and will use a 0.8mm (.032" dia) on elevator.

Thank you for the kind words and if there is any more questions let me know!

Fred


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion A-10 Wart Hawg Cartoon Fattie... Rusty-Gunn Foamies (Scratchbuilt) 335 May 15, 2014 06:24 PM
Discussion How to make fatty cartoon planes gonzalito Foamies (Scratchbuilt) 10 Apr 17, 2012 01:03 PM
Wanted Cartoon fattie planes LIZZAY Aircraft - Electric - Airplanes (FS/W) 4 Apr 13, 2012 12:06 PM