Madill 122-B Swing Yarder

[Trucker_Jo]

Hi all,
I have been on the forums drooling on peoples amazing builds for over a year and finally got started on my own project. I really wanted to get a kh before this project for practice and for use as a scale but this should do. So around 8 years ago for my birthday I was bought this (its 1/12 scale):



I ended up making a yarder out of it by cutting the bucket off and splicing in a mainline and used some erector set pieces for a drift carriage. For the guy lines I just tied some string to the top of the tower and the other end to a stake in the ground. Well I ended up frying motors and striping gears(I don't know much about RC but where there's smoke coming from your yarder you should stop) So it sat around until today when I decided to take it apart and see what I had (cat not included):


















As you can see its not very realistic but I took all the decals off, cleaned it up, took all the cheap electronics out (it was a wired controller that was starting to frey) The cab is on the wrong side and nothing is really to scale so lot of styrene work is coming my way. New motors will have to be bought and mounted somehow and build some high capacity drums and maybe small ones for guy lines. I want to make realistic tracks that will carry this thing up to the landings Of course lots of other things and i'm 16 with really no RC or scratch building experience but with lots of time but not so lots money and family in logging industry I should be fine.

This is what I want to have it end up look like:



I love these forums and I have learned so much. Thanks for looking and hope to have updates soon.

[grumpygrady]

one thing about yarders is there are no two just alike , lol it seems companies build them on most any type of tracked vehicle or convert any drag line that they have sitting around , I have been kicking around an idea on making one from a 1/16 scale tank , I have a 1/6 scale tank now but it is a little big lol
please keep posting pictures as you go

thanks

[Trucker_Jo]

Thanks! Well today I made the cab able to rotate 360+ degrees. I also started working on a tensioning system for the tracks. Buying supplies tomorrow hope to have pictures going.

[RCP57]

Cool! Just make sure it can pull and lift a 42" long or bigger log. That way you could yard logs for my 850.

[Trucker_Jo]

I plan to make this around 1/12 scale so I should be able to stuff in some beefy geared motors The one craft store in town didn't have styrene so I will order some tonight. As for the type of glue and filler I need to do some more research. I'm try to find some blue prints or drawings of some sort and get the courage to start hacking away.

[tracksntreadslou]

Originally Posted by Trucker_Jo

I plan to make this around 1/12 scale so I should be able to stuff in some beefy geared motors The one craft store in town didn't have styrene so I will order some tonight. As for the type of glue and filler I need to do some more research. I'm try to find some blue prints or drawings of some sort and get the courage to start hacking away.

Hey Jo I have some maddill drawings on pdf .If you pm me your email we ll see if i can get something to you

[Trucker_Jo]

Originally Posted by tracksntreadslou

Hey Jo I have some maddill drawings on pdf .If you pm me your email we ll see if i can get something to you

Thanks! PM sent.

[Trucker_Jo]

A little update. I cut everything with a utility knife.









Kinda scary cutting everything apart

[Cooper]

Looks pretty cool!! I'm new to this also, and I thought building a dozer would be a challenge. This yarder looks like it would be a challenge with all the rigging!! Interesting watching as I have found out that building is addictive!!!

[RCP57]

Originally Posted by Cooper

Looks pretty cool!! I'm new to this also, and I thought building a dozer would be a challenge. This yarder looks like it would be a challenge with all the rigging!! Interesting watching as I have found out that building is addictive!!!

Haha, building is addictive! Next thing you know you'll have scale RC's stacked on top of the Corvette...

[Trucker_Jo]

Originally Posted by RCP57

Haha, building is addictive! Next thing you know you'll have scale RC's stacked on top of the Corvette...

I got some progress done but ran out of styrene. Now I know what I need and can order a bunch online over the weekend. Im using .08ish thicknesses.

I rebuilt the seat and started working on the main boom:











The boom will be around 3 feet long when done. Its about 5 inches wide by 1 1/2 inch thick. Not very scale but whatever The seat will be around 8 inches off the ground.

If I were sticking to 1/12 scale the boom could reach 5 feet So I am just building it 1/jarrett thinks it looks good scale More will be done over the weekend!

[grumpygrady]

for sheet styrene check your local sign shops as that is were I found sheets of .030 and .060 4 foot by 8 foot for less than 30 dollars each

[Trucker_Jo]

Originally Posted by grumpygrady

for sheet styrene check your local sign shops as that is were I found sheets of .030 and .060 4 foot by 8 foot for less than 30 dollars each

Thanks I'll have to try that! I PM'd you and forgot to mention I have a few more parts I could throw in as well.

Well I got a huge chunk done with the cab today. The interior will get more detail once I get some sort of filler. I am addicted to styrene now The window guard material is galvonized nails cut to size. I have window material on the way. The front window sheild is actully mounted on the boom and I just burnt 50 bucks on materials coming my way next week





Thanks.
More to come sooner or later

[Kingcam2]

Nice work so far Trucker Jo.

[tracksntreadslou]

Great start Jerrett...Yes working with styrene makes it a little easyer ..Takes a little while to get your head wrapped around how you are go to put things all together ..Theres where insomnia come in ..Most of my designing is done on my back ..lol
Its amazing what kind a materials are already at hand ..good idea with the nails..keep up the great work bud

[RCP57]

Would it be too cheesy if I said you "nailed" the cab? Yeah that's what I thought...

Keep at it!

[Trucker_Jo]

Hahaha. Thanks guys! I started working on the body today I will have more pics probably tomorrow.

[Trucker_Jo]

Today I shaved off bits of the lower black part of the body so it was flat to put some styrene on and start getting the square edged shape i've been looking for. I spilled almost all of my Plastruct glue all over the table so I will have to get some more. Lots of styrene should come in tomorrow and I can really start cranking away.

The cab will be sitting around 4 inches taller and a few inches more forward than it is now.





http://i1289.photobucket.com/albums/...psb35daf81.jpg

I still have no Idea how to do electronics and how to mount the drums and gear reductions and mechanical stuff like that. There will be 7 drums overall in the machine so i'm guessing a radio with a bunch of channels will be needed Thanks.

[Trucker_Jo]

Worked on the rear hood/engine bay today. Still need hinges and some mesh

[tracksntreadslou]

Nice work Jarrett..Realy taking shape ..Check out MEK for adhesive ..hard to to get but works great ..very thin and watery ..all you do is hold the 2 parts together and brush overtop and peices almost melt together ..stong bond too