Steamer

[tracksntreadslou]

I think It was Jason ..Both boxes truck and trailer were very highly polished aluminum..Id be nevous about loading him as an operator

[doodlebug]

Hey Rob, Are the linear servo's that Izzy used too big for tail gate lift?
http://www.firgelli.com/index.php Now the next question? A while back I saw a video on you tube, for an Austrailian logging trailer set up, multiple trailer's that folded up on each other. Thank's, Elliot330 and Tracy! http://www.youtube.com/watch?v=l6877...eature=related
http://www.youtube.com/watch?v=NOdXM...eature=related

Any way's, that rc trailer had a real neat chain drive setup, that would work for the transfer trailer. I think it would take a battery and receiver under the trailer. Winch drive, or screw drive for pushing the transfer box, into the truck box?
Cost my be getting out of control for this idea? I don't know what radio you are using? Will your's support 2 reciever's?

Ok, next question, how to make the tailgate work on the transfer box, when it's in the truck?

Later, Neil#2 aka doodlebug.

[ihbuilder]

Rob , I built a high rise tailgate on my 9370 , I'll have to get some pics for you . if you have room for 2 645mg servos under the box in the back , you could make some linkage arrangement to lift the tailgate . I have mine up buy the dog house in the body . here check this site out http://www.jmhtrailers.com/Heavy-Dut...mptrucks3.html mine is somewhat based on theirs .

Steve

PS I'll get a vid up of mine working by the weekend

[Lil Giants]

I like your idea of a sliding box Rob, very trick without being overly complicated to build, will work flawlessly everytime with every load & no hands on.

Transfers -> too many small, intricate parts that will break, bind, burn out, blow up...! I think such an idea is buildable, but won't be good for no hands, trouble free, regular use.

[doodlebug]

Hey Joe, good point, I think I opened "a can of worm's".

Never the less, we aren't bored scheming up new way's to build model's!
Thank's for the link, I'm looking at 1:1 demolition bed's, for my next truck.
Hey Rob, have fun with building the new trailer!

Later, Neil#2 aka doodlebug.

[steamer]

Neil. Ya I looked at the liner actuators, but they take up to much space as there's only about 1/8" thickness to work with.
Steve. looking forward to see how you did the high lift, don't want to steal your ideas but just some pointers would be good.

The radio I'm using is a TH9X Sky Fly. 2.4 . It has lots of switch's and knobs and I bound it to two receivers so I can put one in the trailer to operate the screw drive, brakes, tailgate lock and the lock pin on the turn table to be able to back it up. The transfer drive I was going to model is made by Beall Trailers and you can see the video here.http://www.beallcorp.com/aluminum-transfer/
It kinda neat as there are no hydro's on the trailer.
Joe Thanks for the comments and I can see where you need the reliability moving all those mountains of dirt. I myself like to push the envelope and try to make things as scale as I can and if possible make them work. If I can somehow make the lift gate work, I'll take those four axles and make up two trailers and that would be even more fun. Keep the comments rolling in and let's see where this end's up.
Rob

[doodlebug]

Hey Rob, interested to see how you set the trailer brake's up.
Later, Neil#2 aka doodlebug.

[ihbuilder]

Rob in this thread , post #6 8th pic green dump on the bridge dumping with the tailgate up . the servo is mounted up on the bulkhead by the dog house . I have a spring assist for the original servo (65mg) that burnt up but 1 645mg picks it like nothing I'll get closer pics if you want . http://173.201.47.108/showthread.php?p=22209#post22209

IHSteve

[steamer]

Steve That's a great idea. Never thought about running the controls on the inside of the box. That opens up a whole new list of ideas to make it work. Thanks.
Rob

[doodlebug]

Thank's Steve, missed that detail the first time. Later, Neil#2 aka doodlebug.

[Jared]

Transfer! Transfer! I vote for transfer, but I'm biased because I like pulling them. My old boss was telling me when he was in Finland he saw transfers that had a jaw clutch arrangement to drive the transfer chain. One half was on the back of the truck and the other half on the front of the trailer so when the truck backed up to the trailer, the jaws meshed and the driver could transfer without getting out of the truck. All he had to do was get out to unhook and hook up, and I can't remember for sure but there might have even been an automatic release for the air and electric lines and the hitch so the driver only had to get out to hook up.
But whatever you do I can tell it's gonna turn out good.

Originally Posted by doodlebug

Ok, next question, how to make the tailgate work on the transfer box, when it's in the truck?

The 1:1's I've pulled had a stirrup that hung off the front side of the tub tailgate latch that the open truck tailgate latch slips into when the tub is transferred into the truck. When the truck latch is closed, it pushes down on the stirrup which opens the tub latch. Hopefully that makes sense.

[doodlebug]

Hey Rob, missed the video first read. A few year's ago, I remembered seeing a tranfer box that didn't latch properly, the full box of asphalt slid out of the truck and into the paver hopper, WHAT A MESS.
I like the hydraulic tailgatelift on the truck. Airlift suck's!
Later, Neil#2 aka doodlebug.

[ihbuilder]

Rob Here's some close pics





I actually wanted to go with hydros but I had a problem finding the right cylinders . Meaning length to stroke ratio . to get the right stroke the cylinder was way out of proportion to the truck .

IHSteve

[steamer]

Jared. Thanks for the comments. You bet I like the transfer too. And the setup with two trailers would even be more fun. The Beall video shows the stirrup arrangement for the transfer box locks and that doesn't look complicated. I have a small gearbox that came with a winch from RC FWD and I think it will work for the transfer system. I've got servos coming to try the high lift tailgate so we'll see how that goes.
Neil. I can imagine what a mess that would make dumping the box in like that. I think I'll try an arrangement with the truck tailgate lock so when it opens the transfer tailgate locks it also locks the transferred box in. Hope that makes sense.

I guess I should have photoshop'ed my truck in there pulling the two trailers.
Rob

[Jared]

Originally Posted by steamer

I think I'll try an arrangement with the truck tailgate lock so when it opens the transfer tailgate locks it also locks the transferred box in. Hope that makes sense.
Rob

I see a dropped tub in your future. What happens when the tub gate is locked and you drive up or back down a hill? You got me thinking of ideas now. I'd love to see a transfer modeled so I'm gonna do some brainstorming to help out, if you can call it help . Maybe the tub locks could be set up so when the horns on the front of the trailer poke into the back of the truck to line it up, they push on a plunger that's hiding in the hole that is attached through some kind of linkage to the locks. So when the truck backs up to the trailer, the horns push the plunger which releases the locks so the tub can be transferred and when the truck pulls away the locks drop down and lock automatically. To lock the tub onto the trailer, there could be hooks fixed in place on the trailer that the tub would slide into and the chain would hold the tub in place against the hooks. I hope that makes sense. If it doesn't I'll try to draw a cartoon.

[Lil Giants]

Originally Posted by Jared

I see a dropped tub in your future. What happens when the tub gate is locked and you drive up or back down a hill?

Can the trk's tailgate close with the transfer box inside?

Infra red controls on trk to each trl to activate trl locks, trl brakes, trl slide motors?

[Jared]

Originally Posted by Lil Giants

Can the trk's tailgate close with the transfer box inside?

The tub sticks out of the truck a foot or so so it can't close but it can be lowered partway to rest on the tub to allow loading over the tailgate with an excavator or to lower the clearance. That gives me an idea, though. Locks could be rigged up so the lift gate drops just a little and hooks on the underside of the lift arms grab a bar on the top of the tub that sticks out sideways. It wouldn't be prototypical but it would simplify things.

[steamer]

Steve. Thanks for the pictures. I guess we were both posting at the same time and I missed yours. Looks like a great setup and I'll start making some drawings up tonight.
Rob

[doodlebug]

Hey Joe, on the transfer's I've been around, the truck tailgate stay's open or up, when the transfer box is in it. I haven't figured out how the transfer tailgate open's in the Beal video, have to watch again. Dropped tub no biggie in rc, 15lbs vs 15 ton's lol!
Later, Neil#2 aka doodlebug.

[steamer]

Thanks guys I've heard that MC won't send to Canada any more, so I've sent them an email. Let's hope that they will because they have what I need. The only reason that I was going to use that drive was so I wouldn't need to connect any power to the trailers. But on second thought I need a method of braking the trailers to recover the boxes, otherwise they'll just push away. It goes from one thing to another and i guess it's one step at a time.
Rob