building an MAN 630
 

hi all,

Marcus convinced me in this thread to show the progress of my MAN 630 project.

The components:

• gearbox and motor from www.tttt-parts.org

• Penta reciever from www.mikroantriebe.de

• HLBT light tiny from www.tttt-parts.org

• speed controller ER600 from www.tttt-parts.org

• 4 x 1,2V NiMh batteries (no lipo cell)

• servo from www.conrad.de

• LEDs type 0603 and 0403 for headlights, backlight, direction indicators and warning lights, back-up light and stop lights

So here we start with some pics: The original model from Herpa (formerly Roco), and the first steps of making the brass chassis, the front axle and it's mounting.

To be continued ...

Jochen

Wow, That is very nice work Jochen. The brass chassis and front axle look really well made.

makes mine look rubbish.

What brass are using for the chassis and where did you get it from?

Thanks for posting this thread maybe we can get some more people interested in making TTTT's.

Marcus

Thank you, but I'm not sure if it's really done so well ... let's wait until it's testet. It's not important how it looks but if it works ;)

I have some different profiles like 1x2mm; 1.5x2.5mm; 2x3mm and so on, and some round and pipe profiles ... and it's all from a trade fair. Recently I've ordered some more material here, but it's in German only.

jochen

Ah i see, ita quite hard to get the small brass profiles here in england so i am having to order some parts from lemo-solar but it is taking a while as they dont accept paypal so oliver from kkpmo is helping me out with the materials.

Marcus

Something new here.

In the last days I was working on a new front axle as the old one was not good enough and could be improved in different ways. I'm still working on the fu..ing small axle journals. Pics will follow when the axle is finished.

But I was also working on some adequate tyres as the original herpa rubber tyres are too hard for TTTT.

I used the same two component silicone for the form and the tyres. You can see the steps in the pics below.

1. sanding the original tyres flat on the inside, so they can be glued without a gap to the bottom of the form
2. filling the form carefully with silicone (make sure that the small details like the tyre patterns are well filled)
3. remove the silicone form after drying
4. treat the tyre forms with a form release agent (?) like talcum powder
5. fill the tyre forms carefully with the (black)colored silicone.
6. remove the tyres after drying.

I had some problems with coloring the (white) silicone. The first try with usual black wall paint missed completely because the silicone didn't dry out. And so was the the second try with the powder of a carbon pencil. It wasn't dry after two days. I've lost interest after that and just let it be. After 5 days I had a look again and it was dry! :)

It was difficult to get the tyres out of the form after so long, but finally it worked and they do not look so bad I think. It's just that they are rather grey than black, but I'll work on that the next time :)

jochen

Slowly but steadily it goes on ...

After re-building the front axle I have continued with the rear part of the chassis and made a kind of mounting rack for the gearbox/motor unit.

In the pics you see the parts of the front axle. The steering arm on the right axle leg is longer than the other because the wire from the servo should be attached there. The ball bearings are 3 x 1 x 1mm, they are glued in self made brass rims (5mm brass round material with a 3mm drilling) and screwed to the axle leg by M1 screws.

The motor/gearbox will be mounted to the chassis with screws in long holes, to be able to adjust the part exactly in direction and height (by grommets).

unbelievable

Hi guys,

no pics at this time as I'm pinned in front of the TV with my leg up in the air. I was playing volleyball and sprained my ankle and tore some ligaments. That means no building for the next few days. :(

No, you don't need to tell me that TTTT building contains much less risk of injury than sports ... I found it out on my own :rolleyes:

By the way, what happened the last few days: I was very busy getting along with the fine tuning of the chasis, e.g. the exact deflexion of the front and rear swinging axles, the king-pin offset (no idea if it's the right word ... I mean the radius of the driven front wheels that depends on the distance between the wheel and the "centre of rotation" of the axle leg ... I guess the confusion must be complete now :o) and some more little works that take hours but can't be seen at all.

I have also attached the cab and the loading platform to the chassis. Both by M1 screws, to be able to disassamble the whole thing for repairs or maintenance. Then I started building a compensator between front and rear axle, but please don't make me explain what it is for, you would not understand my poor attempt of translation. You'll see it when I'm able to take some pics again.

This was just to let you know that it's going on here ... sooner or later ;), so standby for more ...

Jochen

Not much progress but some pics ...

On the first pic you can see the above mentioned compensator and the front axle with a little hook that keeps the the front end of the compensator in place when it's attached to the chassis

The second and third pic show how it's working. The compensator is attached to the chassis in one point in the center between front an rear axle. If one axle is compressed (to one side) the other axle is decompressing. They are connected by the compensator. This should be an improvement compared with free swinging axles. E.g. if the truck is standing angular (I mean crossways on a hill), it's easily tilting because both axles are compressed to one side and it looses it's balance. That should be avoided by the compensator. It should also be better balanced in normal conditions. That's the theory ... let's see how it works in reality ;)

The 4th pic shows the front axle and a bit of the flat springs. They are attached by M1 screws to the chassis and will be adjusted (by their bending and thickness) whe the truck is ready.

The 5th pic shows the fixation of the platform and the cab by M1 screws to the chassis. You can also see the motor/gearbox and servo position.

Enough for now ... I'm still pretty handicapped by my leg :mad:

By the way: I still have no idea about a good painting ... my last MAN 5to is in carmouflage of the german army, so that's not an option. Ideas are welcome, as well as feedback in general!

wow, overwhelming feedback ... not to motivating to continue ...

dont let lack of feedback demotivate you, are you building it so people think you are cool, or cause you want to build a TTTT?
Its rad, keep up the pics

that is a very nice truck you got there bro.. perhaps you could add up a driver up front and some led lights that would be really awsome! ;)

@lowbike:
I'm not building it because I think it's cool. There are hell of a lot of guys who build really cool trucks. Compared to them, mine is rather a beginners work.
I think you don't start such a thread just to show off your stuff but to get some feedback for improvements, new ideas or just some nice conversation. But anyway I will continue ... feedback or not :)

@killer:
the driver and co driver are already waiting impatiently to take their seats :)
LEDs are lying around here for headlights, side lights, backlight, direction indicators and warning lights, back-up light and stop lights. But before that the fu..ing truck has to learn to drive ;)

Its good to see that there are a few others who are still interested in the TTTT's.

Your build is coming along nicely Jochen, i can't believe i have to sell mine but unfortuntaly i really need the money at the moment.

I hope you get better Jochen and i hope you all had a good christmas and a happy new year!!

Marcus

Hi all,

just some small steps ...

on the first two you can see the arrangement of the batteries. One in the front (due to the balance) and three on the platform. The front battery is attached by a plug to the others to be able to remove the platform or chassis without soldering.

On the other two pics you can see the steering, the connection between servo and front axle by a lever.
And, integrated in two boxes under the platform, the on/off switch and the battery charging plug.

Jochen