1:16 Pulling sled

[Espeefan]

Nice work, Frank! I've always wanted to see one of these built. It will be even more fun to watch the tractors lug it down the track. Make sure you get some video footage!

[Grainfarmer]

@ White Wolf!: Thats a good idea. Maybe I´ll do it this way.

We will need the sled at our agricultural model expo in june this year. Then we will get a video...
http://www.rctruckandconstruction.co...ead.php?t=5449
We already have about 70 registrations with about 120 models...

[Acadieman]

The tractor that I'm most interested in seeing pull is the MF1155.

[Grainfarmer]

Some more details of the transmission...:





All torque transmitting sprockets and gears are fixed with zylindrical pins on the shafts. With te complete weight in the box I do not trust a small setcrew...

[Grainfarmer]

Some more steps ahead...:

In the following pictures you can see the levers and mechanic system to lift up the rear end of the skid plate at the starting line. After about 3 ft distance the weight box lets the levers move up and the complete sled plate touches the ground.



The original sleds do it the same way. Lifting the rear end of the sled palte up makes it easier to accelerate the "vehicle" at the starting line. At this moment there is almost rolling friction, later when the plate is pushed down it becomes sliding friction.
In the middle of the weight box you see a thick brass bush. It contains the locking pin for the chain...The pin drops into the free space of the chain link.

[Grainfarmer]

Hi together!

Here´s a first test video...:

http://www.myvideo.de/watch/9091379/Bremswagentest1

Regards
Frank