PC1800 Front Shovel (1/12)

[RCP57]

Awesome job KP. That's a great idea to use the spin on filter.

[sparkycuda]

Wow! Very nicely done. Keeps getting more amazing as build progresses.

Ken

[DADSGARAGE]

Thanks guys!!!!

Now that I have a better idea of where things are going to be located I could finally mount the valve body in place and then fab the hard line from the pump, ended up switching sides with the pump and motor, works better with the pump on the same side as the tank.....go figure...lol

Now that the valve is mounted I could finish the work on getting the controls connected to the servos, the 6-32 threaded rod seems to be rigid enough to move the valve controls....time will tell. Hopefully this set up will work, how well it works remains to be seen, having the servos mounted more directly to the spools would be better...less chance of free play from servo to spools. This whole hydraulic system is not typical for an RC but hey I'm going to try it out and see what happens...LOL


[IMG]

[IMG]

[IMG]

[IMG]

[IMG]

[speedy8305]

This Thing is AWEEEEEEEESome

[SteinHDan]

Pure eye candy!!

[modelman]

I have been waiting to see how you were going to operate the hydraulics. This looks simple enough and should work well. Nice work so far. Waiting for more!!

[DADSGARAGE]

Thanks again guys!!! Glad you like my attempt at building this model....trying to keep this as simple and functional as possible. Hopefully it all works!!

Mounted the hydraulic/servo frame to the floor, so while it was apart I also added some access holes to get at the motor mount cap screws....having this frame attached to the floor has really increased to the rigidity....thankfully...the 1/4" aluminum floor needs all the help it can get. Hopefully I don't over build this to much....LOL

[IMG]

[IMG]

[IMG]

[IMG]

[IMG]

[DADSGARAGE]

So.....after experimenting a while with a spring loaded belt tensioner I finally decided to build a simple adjustable tensioner that moves in a slot on one side beside the pump.....took this apart again and then had a total brain fart
and marked the angle of the slot the wrong way...hate it when that happens!! YIKES !!! So then proceeded to take a light cut, the whole time not noticing the painfully obvious mistake and well the pictures tell the story....lol....just as I got to the end of the first light cut I noticed that the slot was angled toward the pump mount studs....to late now..."NICE REAL NICE" Wasn't sure if I should laugh or cry...lol...gave this thing it's first nasty build scar!! After cutting the slot at the proper angle the tensioner should work a bit better now!!

[IMG]

[IMG]

[IMG]

[IMG]

[RCP57]

You did it on purpose because you're using a V belt. Looks great to me!

[DADSGARAGE]

Oops...this should be the last pic!!
(Just par for today LOL)

[IMG]

[Rakthi]

Been following this since the beginning and I knew it was a "big" project, but seeing that soda can sitting underneath, that really brings home how big this thing is.

Fascinating to see this come together. Thank you very much for the pictures etc.

[modelman]

A little mistake like this is not a problem but I'm sure you were upset because you wanted it perfect. It makes me feel better knowing that an accomplished machinist can and does make mistakes. Great work so far and I can't wait to see this monster digging!!

[Rvjimd]

Wow, those shots of the pop can under the machine really give it some serious scale! Very cool, I also want to see this monster moving some dirt!

Jim

[crawler07]

Superb work Sir! I feel I have learned a ton from you and a couple others on this build I appreciate you all posting for all us noob's. What do I search on Princess auto site to find those cylinders if you don't mind sharing.

[DADSGARAGE]

Originally Posted by crawler07

Superb work Sir! I feel I have learned a ton from you and a couple others on this build I appreciate you all posting for all us noob's. What do I search on Princess auto site to find those cylinders if you don't mind sharing.

Thanks!! Glad you are learning something from this build, I'm learning from it too!! LOL I would say most of us on here have things to learn and if we share what we learn (good or bad) then hopefully we can all learn a thing or two from each other. This forum is loaded with some very talented people building models far more complex and interesting than what I build so be sure and check out all the older builds as well!!

The air cylinders I'm trying are not from Princess Auto , the pump and valve are but the cylinders are from Automation Direct
(Double acting / double end mount)

http://www.automationdirect.com/adc/...cting/A20060DD

http://www.automationdirect.com/adc/...n.%22)&start=0

[DADSGARAGE]

Originally Posted by RCP57

You did it on purpose because you're using a V belt. Looks great to me!

LOL.....maybe I should have finished cutting the first slot and just made it look like it was planned that way, but I couldn't seem to figure out a good (BS) reason for the ummm "V" but you nailed it !!! Good one!!! LMAO

[frizzen]

Just do something to make the screw hole under the V look really important . ya did it so you wouldn't forget to install that...

I hadn't realized the scale until the soda can shot, wow!

[DADSGARAGE]

Needed to see what this thing will look like, a 2D cad file just doesn't cut it sometimes, so this is a simple way to get a 3D visual before making it in metal. Somethings just didn't look right (scale) on the cad drawings like the black hood and side grill...seems to big, not sure. And the cab on this machine is huge!!!













Sorry.....not very high tech but hey it helps!!

KP

[Lil Giants]

Works great for me too... how about a shot with the wooden boom bucket mounted up too.. kinda looks like an amputee without it.

[sparkycuda]

The carbody mockup looks right. These size machines have always looked weird with large sheet metal boxes and relatively small tracks - proportion just doesn't seem right, but it is. Looks really great!

Ken