mrnon

Have only translated some of the German so far from That site. http://www.mzr-online.com. This site has a PDF detail sheet of one of the gears. Some impressive stuff on this site but no translation unfortunately

The planetary gear is attached to the end of the motor encased in the black plastic, you can buy them in many different ratios, the one in this project is 25:1 I believe

Seems to be 3/8 square rod drilled through with a 3mm bore. Then opened out to 6mm to accommodate the planetary gear. The bearing looks like 3mm external 1mm internal diameter, with worm drive and 10 teeth cogs, all 1mm drives/axles. That's my ruff calculations any way. Just need the time to experiment.

This chap has some excellent models and looking at the pieces of the gearbox all laid out you can see how it's constructed. Not in depth instructions but as long as you have the tools this shouldn't be too difficult from the look of it http://www.wintermayr.de/cms/index.php?id=129

Thanks Few little bits left Tidy up the wires underneath and paint the enamelled wires round the the rear light clusters. Steering mech needs fine tuning as it's catching slightly. The last thing is to fit a 7 way connector at the rear base of the cab to make it easy to change trailers. Might add a weight behind the motor to aid traction. Already toying with trying to make my own gearbox for the next one, have seen on one of the German sites how to make one using brass square rod and a micro planetary gear, but requires some micro metal work skills.

The video file is hopefully attached,

Might be worth trying www.mikromodellbau.de they have a selection of tyres and there shipping is quite reasonable from recollection. They cover almost every aspect of micro rc although some of the motors and gearboxes are very pricey. Regards my gearbox I bought it from kkpmo on eBay. I think it has a ratio of 96-1 and was under £10. It's the same person who runs the mikro antriebe website, their based in Poland and turn things round very quickly. Seem to have a good range as well If I get a chance I'll get it charged up and attempt a video today or tomorrow, no promises though.

Had some basic electric issues to start, bad joints or contacts that shorted out. This is my first attempt at anything electrical and my first rc project so I'm learning the principles for both as I go so to speak. was not 100% the batteries were takeing a full charge as they only seemed to last 10 mins if I was lucky. Little bit of trial and error with the charger settings and I get 20 to thirty mins. Was trying to work out what effect the capacitor in the motor circuit ( mentioned earlier in your post) would have, completely overlooked this when I studied the wiring diagram. Like i said electronic therory is all new to me. With regards to its performance it runs a little fast and with the bulk of the weight over the front axle it looses a bit of traction when running solo, traction is vastly improved with a trailer attached, my only drawback is space to test it to full potential. I too have lost my workbench space with the arrival of our fourth child. House move is now a must so the oo layout in the loft has all gone into boxes and I'm left with the space of an A3 cutting mat to test things when I get five mins.

My wife thinks my collection of 70 locos and dmu's along with 150 coaches and around 250 wagons is large, all oo.

If it's worked there should be a couple of pics of my lorry project. I'm using the solder pad version of the deltang receiver chip as this fits quit nicely inside the cab with the lipo battery. Model has full light control, and now figured the battery life issues can tidy up the underneath and get on with the trailer. Starting with a cement bulk tanker with working tail and side lights but hoping to get a functioning tipping trailer to work at some point, early planning stages still though. All the parts for this project were acquired from eBay, like you found the sol-expert site first but found the price a little out of my reach especially with a12euro shipping charge,

Nice to see your project, I have been experimenting with a 1/87 lorry unit since Christmas but have been struggling with battery life, think your project updates may have just solved my problem. Glad I'm not the only person struggling with the German translation either, google translate leaves a lot of grey areas. Looking forward to seeing your next update