Team Rothmans

[Daves956]

How about using fishermans trace cable ? That should take the strain ok .

I just thought chain would look cool. I've got 30 pound test cable and it looks good too.

[bromvw]

I just thought chain would look cool. I've got 30 pound test cable and it looks good too.

Dave so long as it works does it matter ? If the cables scale looking it will be cool .

[Daves956]

By scale the fishing leader is 1/4 inch so it is on the small side but it's the biggest locally available. Hardware store has 3/32 stuff but that's too big. I thought chain would be easier to deal with for the lifting end hooked to the platform.

[bromvw]

By scale the fishing leader is 1/4 inch so it is on the small side but it's the biggest locally available. Hardware store has 3/32 stuff but that's too big. I thought chain would be easier to deal with for the lifting end hooked to the platform.

Dave rc4wd make some very scale U shackles in 1/10 th . They would look very in keeping on the tail lift to secure the cables .

[Daves956]

Dave rc4wd make some very scale U shackles in 1/10 th . They would look very in keeping on the tail lift to secure the cables .

I saw those yesterday and they do look good. They sell the scale trio packs that caught my eye too. Hi lift jack, watercooler and fire extinguisher type stuff. I'd want the rifle, keg and fire extinguisher for the pumpkin.

I was wandering in walmart and found plastic coated picture hanging cable that's a possibility too. I have to figure out how to spool it up somehow.

Well fudge, the little Tamiya gearbox isn't up for the ESC. I let the smoke out of it and it's not worth fixing so it's back to the drawing board.

[bromvw]

I saw those yesterday and they do look good. They sell the scale trio packs that caught my eye too. Hi lift jack, watercooler and fire extinguisher type stuff. I'd want the rifle, keg and fire extinguisher for the pumpkin.

I was wandering in walmart and found plastic coated picture hanging cable that's a possibility too. I have to figure out how to spool it up somehow.

dave all you need is a small spindle wheel fixed with a grub screw . drill the rim and secure the cable through the hole .A Meccano wheel would be ideal .

[Daves956]

Meccano, Gilbert, Ideal or Erector might have a few solutions. Like a robust gear drive that's ESC friendly and fits above the axles.

[Daves956]

One thing I'm really concerned with on the lift is building a pop up toaster. How to keep the torque up and the speed down and still be able to move it. The trailer already resembles an 8 slice toaster, all I need is for the car to come popping up. Hmm, push it down and just spring loaded up on a timer.

[bromvw]

One thing I'm really concerned with on the lift is building a pop up toaster. How to keep the torque up and the speed down and still be able to move it. The trailer already resembles an 8 slice toaster, all I need is for the car to come popping up. Hmm, push it down and just spring loaded up on a timer.

hows it driven Dave ? if its by a brushed motor you could add a variable potensiometer to the motor supply and be able to dial in the speed while keeping the torque .i think that would work ok. i intend doing the same on the prop drive motor of my Ford GPA to slow the motor down . this link will show you how its done

http://www.ehow.com/how_5517164_wire-potentiometer.html

effectively your increasing the resistance of the motor . All you need to be careful of is not to overload the ESC's limits .This is how the old Tamiya MSC worked BTW so the idea is proven

[Daves956]

I did some swapping around to try some different combinations and an Ideal Erector sealed gearbox and a Tazer 15T ESC play well together. The Ideal era gearbox is really tough and has a round through hole with 3 flats to drive it so I can do a proper length shaft with no couplings and just spool up cable on either end. Before I mount anything permanent I'll C clamp the gearbox to the roof of the trailer and give it a go. It I just have a length of cable on the main platform edges, then a loop to capture it on the lifting cable with no fixed attachment between. It should in theory pull better, or straighter right?

I tried some of the fixed resistors from MSCs to see how it did and it wasn't much of a change until I went to high ohms. That's why I started trying different ESCs.

[bromvw]

I did some swapping around to try some different combinations and an Ideal Erector sealed gearbox and a Tazer 15T ESC play well together. The Ideal era gearbox is really tough and has a round through hole with 3 flats to drive it so I can do a proper length shaft with no couplings and just spool up cable on either end. Before I mount anything permanent I'll C clamp the gearbox to the roof of the trailer and give it a go. It I just have a length of cable on the main platform edges, then a loop to capture it on the lifting cable with no fixed attachment between. It should in theory pull better, or straighter right?

I tried some of the fixed resistors from MSCs to see how it did and it wasn't much of a change until I went to high ohms. That's why I started trying different ESCs.

lol Dave our minds think alike then . Re the cable runs . The more direct the force applied the more lift you will get .

[Daves956]

There is a winner in the lifting department. It didn't like the cables crossed and bound up a bit... started to bend the roof of the box but it lifts it ok.

Reciever won't be in until next week so I used a 2 channel. There's the winch for the gate too.

[bromvw]

Getting there buddie . Brace the roof up , add a enclosure and your good to go .

[Daves956]

The gearbox will be in the inside front of the trailer. There will be a rod across the rear top as a pulley. That way the gearbox won't be seen. I just put it on top because it was an easy way to test it out without mounting it.

I'm thankful for the mention of Meccano. This gearbox is an odd one with no other value, It's from a time in the company history better left unmentioned.

[bromvw]

The gearbox will be in the inside front of the trailer. There will be a rod across the rear top as a pulley. That way the gearbox won't be seen. I just put it on top because it was an easy way to test it out without mounting it.

I'm thankful for the mention of Meccano. This gearbox is an odd one with no other value, It's from a time in the company history better left unmentioned.

badword buddie i was showing my age there i guess . its works though

[Daves956]

I collect old Erector suff and newer Meccano but the middle years when it was part of Ideal toys was a lot of junk. I wind up with bits of it in lot buys. It's good to have the gearboxes no matter what.

[Daves956]

A bit of backtracking. I used the width extension pieces from the trailer kit since it put the trailer width right at the inside width of the box and then put the wood deck in. I pulled the box off and started marking it for cutting a hole in the side and a few other fitment issues. I made 10 4 inch side stakes from solid anodized ali and set a cross pin 3/4 from the end to keep them in place. I drilled the width extensions to fit the 5mm stakes.

This makes the trailer without the box still a flatbed and gives me points to put 5mm bolts in to hold the box in place. Gold is one of the trim colors for Rothmans and the truck will have gold stripng so the gold stakes should fit in in the end. 5mm and 7.50 US for material didn't hurt either. For those keeping track, size 8 is gold and went from tube to solid 5mm. Size 9 is 5.5 hunter green and probably solid as well.

[Daves956]

The lift topped out 10mm lower than the bed so I cut back the C channel brackets on either side. I put more bolts in the box mounting angle and the C channel. I made up the rod for the lifting cable at the top of the box. I need to do a bit more machining on the lift posts but it's getting there. I picked up some more flat 2mm to start on the front of the box and some doors.

I took it out and drove it around this last weekend. I tried all the gears and everything worked fine. I just suck at driving it. I'm going to swap steering and throttle sides on the transmitter and see if it helps. That's it, has to be the transmitter messing me up......nope.

[Skottoman]

Making good progress! Keep at it!

You'll get used to driving it, just takes some time... Plus when you're moving the trailer around you end up driving pretty slow anyway.

Cheers,

Skottoman

[Daves956]

It doesn't look like much has changed but it took another 4 hours to get there. I shortened and aligned the lift arms, cut all the bolts and shafts to length, fit the gearbox and cables and tried it out. I've got to find chain for the lower lift section, otherwise it'll never lower even without weight on it.

[Daves956]

I found the chain today and gave it a go. Another gear box bit the dust. I tried another one from the erector stuff and that was a no go. I even tried an SRB rear axle set and it didn't work. I just don't have anything with the right gearing. I tried the LHS and they have no idea either. I have an idea, make tire chains for the truck and load it with steel for traction. Then use 2 of the bullet powered nailers instead of the trailer legs. You park it and nail the trailer to the ground then use the truck to power the lift. Might need a pry bar to drive away but.....maybe not.

I'll think of something

[Daves956]

I started on a gearbox for the lift. 540 black motor for power with a tripple reduction, The final ratio is 273:1. All good gears and it will be in an ali housing.

[Daves956]

A little bit of mill work slotting the motor mounts before it can be tried out. I'm going to just use the output shaft for the cable pulley. No reason to add to it's load factor just for speed. If you get the chance to make a custom gearbox.....pass....they aren't any fun.

[RallyDude]

Nice handywork.

[Daves956]

It was pretty funny, just trying it out with a couple pounds of steel on the lift and holding the edge of the gearbox against the front edge of the box. It lifted the steel with ease but on the second lift it started to lift the nose of the trailer. The trailer had slid back and put the lift under the rear of the 959. It had it a couple inches off the ground all crooked and still had the steel weight on it and lifting away. I think this gearbox could snap the 30 pound test cables. It's bigger than I planned so it'll be put in the nose of the trailer that hasn't been done yet.