Building a MAN 5T and 6x6 Pinzgauer - Page 2

MarcusN · #16 11-06-2008, 04:06 AM

Hi Jochen,
Thanks for the info.
I have been using google to translate most of the info and i can understand quite a bit.

The MAN 630 sounds interesting, will you be making it 4wd or just rear wheel drive?

Your parcours loks very nice. What material did you use to make it out of?

Would it be possibly if you could take some pictures of the underside of your MAN and maybe the internals?

Thanks again for your help,
Marcus

jogs · #17 11-06-2008, 08:35 AM

Quote:

Originally Posted by MarcusN

The MAN 630 sounds interesting, will you be making it 4wd or just rear wheel drive?

It will be a 2wd. The 4wd trucks I have seen so far have a much bigger turn radius due to the missing differential. That would not fit to my narrow trails on the parcour. (and it's more expensive if you can't make it on your own)

In fact I want to build a Unimog at the same time with the MAN. One of them should get a special suspension for the front axle that I have seen on a trade fair this year at Thorsten's MAN 630 (who answered you earlier in this thread). It was fascinating, looking really realistic and working perfect but a bit hard to descibe in english

The other truck should get a swinging connecting arm between the swinging front and rear axle that should improve the trial capabilities. You can see this solution here on Harrys page
But so far these are only plans ... let's see what comes out at last

Quote:

Originally Posted by MarcusN

Your parcours loks very nice. What material did you use to make it out of?

The base panel is made of "Styrodur". In Germany you get it in building centers and it compares a bit to styrofoam, but it's stronger and not that crumbly. The "mountains" are made of styrofoam, paper-mâché on top and gypsum/cement at last.

Quote:

Originally Posted by MarcusN

Would it be possibly if you could take some pictures of the underside of your MAN and maybe the internals?

I will take some pictures this evening and post them tomorrow ...

Jochen

MarcusN · #18 11-06-2008, 11:15 AM

Hi Jochen,

Thanks for the info. The unimog sounds very interesting and Thorsten's trucks look very good aswell.

Them trucks on harry's site do look good and will help me in building mine.

I think i am going to build my parcours out of styrofoam and paper-mache as these materials can easily be found in england.

I look forward to seeing those pictures of the MAN.

Thanks
Marcus

jogs · #19 11-07-2008, 02:49 AM

Hi Marcus,

I've taken some pictures from the bottom side. I used an epoxy chassis from Mikromodellbau.de and added the original details under that chassis. The front axle is from "Faller car system", the swinging rear axle is from Mikromodellbau.de. The on/off switch is hidden under the exhaust, the charging connector is on the opposite side (with the three holes).

... strange, I can attach only one pic to the posting ... have to make one Posting for each picture

EDIT: finally the upload worked

MarcusN · #20 11-07-2008, 03:11 AM

Hi Jochen,
Thanks for the info about your model.
So do you leave the battery in the model when charging it as i was wondering how to charge it up if everything was soldered together.

Also do you think that the servo i have placed in the MAN cab is a good idea?

I didnt know that about attaching pictures as i upload them to photobucket.com and just put insert the url on this page.

Do you know where Thorsten has gone as he used to post a bit on here but i dont think hes been back in a while?

Thanks for your help.
Marcus

jogs · #21 11-07-2008, 03:49 AM

Quote:

Originally Posted by MarcusN

So do you leave the battery in the model when charging it as i was wondering how to charge it up if everything was soldered together.

Yes, the Lipo-cell is left in the model and it's charged via the plug on the bottom side. Have a look at Stefan's page and click on "Modellbau", then "Elektronik" and then "Schaltpläne" (in the horizontal menu). On this site you find a general connection scheme that also includes the on/off-switch and the wiring for the charging plug (the big one on the bottom).

I think my pics won't help you to much because I've just "slaughtered" the truck to find out about some nerving radiointerference.
From the front to the back: Servo cross the platform, then the battery, on top of the battery the reciever (now outside), motor and gearbox (almost invisible), behind the motor a connection bar for the backlights and upright to the left the cruise control and the light tiny to the right.

Quote:

Originally Posted by MarcusN

Also do you think that the servo i have placed in the MAN cab is a good idea?

The position for the servo is perfect! The more weight on the front axle, the better! And you have more space for the other stuff on the loading platform.

Quote:

Originally Posted by MarcusN

Do you know where Thorsten has gone as he used to post a bit on here but i dont think hes been back in a while?

I don't really know him, I've just met him once on the fair. But he's really one of the best experts in this field and always very helpful. I hope he doesn't mind if I tell you that you can find his E-Mail on this site mikromodell.de/ under "Kontakt".

Jochen

MarcusN · #22 11-07-2008, 04:16 AM

Hi jochen,
Thanks for the pics, they have helped me a bit.

I have just looked at the diagram about the switch and i have noticed that the + and - of one channel is connected to the servo and the speed controller, is this right? And would i have to wire the lightening kit like this or could i just wire the connections normally?

I have seen on the german micro model forum that you are having a problem with radio interference. There are some very good models on there aswell like that hummer and the firetrucks.

Ah i see so if i put more weight on the front axle then it would perform beter?

Yes thats where i got thorstens email from but he doesnt seem to answer to his emails. It doesnt matter though as you helped me alot
Thanks
Marcus

jogs · #23 11-07-2008, 05:15 AM

Quote:

Originally Posted by MarcusN

I have just looked at the diagram about the switch and i have noticed that the + and - of one channel is connected to the servo and the speed controller, is this right? And would i have to wire the lightening kit like this or could i just wire the connections normally?

In fact, the best solution for minimal interference and a clearly wiring is to lead the + from the battery to an extra little board as well as the - (but the - via the switch like on Stefans plan). And from there on you wire all the other components. The reciever needs only one +/- connetion for the power supply (like Stefan shows), the other channels of it need just the impulse connection. It's the same wiring that I've chosen. You can see the little "power distribution board" right from the battery on the pic.

Quote:

Originally Posted by MarcusN

I have seen on the german micro model forum that you are having a problem with radio interference. There are some very good models on there aswell like that hummer and the firetrucks.

Yes, I gess it's the most active site for micro models in germany.

Quote:

Originally Posted by MarcusN

Ah i see so if i put more weight on the front axle then it would perform beter?

Exactly, because usually there is much more weight on the rear axle from all the stuff on the platform so the front becomes to light. I have put some small lead pieces under the driver cabin to get more weight to the front. From my experience a ratio of round about 1:3 (weight front vs. weight rear) should be the minimum.

Quote:

Originally Posted by MarcusN

Yes thats where i got thorstens email from but he doesnt seem to answer to his emails. It doesnt matter though as you helped me alot

I'm sure he is coming back here from time to time. But this board was pretty dead since a long time.

jochen

MarcusN · #24 11-07-2008, 06:26 AM

Ah i see so if it would be better if i used just one + and - point from the receiver to the servo, speed controller and lighting kit for the interference and also for the amount of wire that would be used.

Do you use FM technology for your MAN truck or is it infra red?
I am using the FM radio stuff as i am more used to it but i was wondering what is the difference between infra red and fm? As i have seen that sol-expert do a receiver, speed controller and lighting kit all in one which looks like it could save alot of space and wiring.

How exactly do you measure the weight of the front and rear of the truck to make sure i get the correct balance?

This board has been dead for a quite a while, i was hoping to bring it back to life but it looks like most members have left the hobby or lost interest in TTTT.

I might scrap the pinzgauer TTTT project for now as it is a very small model so i am going to buy a 6x6 MAN truck for my next project and i am going to make a brass frame for it. I may also make it all wheel drive but the front all wheel drive axle that peter from tttt-parts.org is making wont be out till next year.

Thanks for your help and i hope the materials come this weekend so i can get on with fixing it all together.

Marcus

jogs · #25 11-07-2008, 07:33 AM

Quote:

Originally Posted by MarcusN

Do you use FM technology for your MAN truck or is it infra red?
I am using the FM radio stuff as i am more used to it but i was wondering what is the difference between infra red and fm? As i have seen that sol-expert do a receiver, speed controller and lighting kit all in one which looks like it could save alot of space and wiring.

I also use FM technology. The difference is that with IR there must always be a line of sight between sender and reciever, the range is smaller and you have max. 4 channels as far as I know. But the components are much smaller and it seems to be cheaper (the sender).

Quote:

Originally Posted by MarcusN

How exactly do you measure the weight of the front and rear of the truck to make sure i get the correct balance?

I use a usual kitchen scales and measure alternately both axles. It's important that both axels are standing flat in one level. But measuring is not so important, just try it out and you see how it works best.

Quote:

Originally Posted by MarcusN

I might scrap the pinzgauer TTTT project for now as it is a very small model so i am going to buy a 6x6 MAN truck for my next project and i am going to make a brass frame for it. I may also make it all wheel drive but the front all wheel drive axle that peter from tttt-parts.org is making wont be out till next year.

If you have the MAN 5to running, I'm sure that you have enough experience to start the Pinzgauer. I suppose that this is almost easier than building a 6x6 with good driving characteristics because of the tricky double rear axle that should swing over two axis ...

Anyway good luck and keep us informed ...

jochen

MarcusN · #26 11-07-2008, 09:16 AM

Thanks for the info about the difference between the FM and IR, i think i will just stick to the FM for now as i have got all the electronics sorted out for the MAN.

I will have a go at measuring the weight of the truck when i have finished it. It sounds simple enough so it shouldnt be that hard.

I see what you mean about the pinzgauer being not that harder than the MAN but i will see how the MAN goes and think about my next project then.

Thanks again for your help,
Marcus

MarcusN · #27 11-07-2008, 05:23 PM

Hi Jochen

I was just wondering what you use to charge the lipo batteries?
I have got that LA-Uni charger from Mikroantriebe and i was wondering what DC voltage input you used to actually charge the lipo?

Marcus

jogs · #28 11-09-2008, 04:36 AM

hi marcus,

I' not absolutely sure, but I have the lipo charger from tttt-parts.prg and i think it's the same as the one from mikroantriebe. The input voltage is between 4,5 and 6V. once there was a data sheet with all the facts but I don't know where to find it anymore.

I have an old variable power supply an I use to set it to about 6V for the lipo charger.

Jochen

MarcusN · #29 11-12-2008, 05:29 AM

Hi Jochen,
Thanks for that i think i have a variable DC power supply that i might be able to use.

At the moment i am still waiting for the materials for the chassis to come but i might get started with soldering the smd leds and resistors to the light boards and connecting all the electronics together.

Do you know where i could get them mini connectors that are used for the charging socket?

Thanks for all your help,
Marcus

jogs · #30 11-12-2008, 07:51 AM

Hi Marcus,

you may be busy enough for the moment if you go for all the LEDs with their resistors, wiring and stuff

I'm soldering the brass chassis for the MAN 630 and building a front axle these days.

I don't think that you have to order the connectors in Germany, they should be available in England too.

Anyway you get them at mikroantriebe (female and male), at mikromodellbau ("elektr. Bauteile" -> "Schalter/Stecker") or at conrad.de (article no. 738514 - 62 and no. 738468 - 62)

jochen