Another Bruder Mack conversion
 

Well in order to keep busy I bought this on thursday. This is my first non-scratch build so it is a major departure from what I'm used to but it still has it's challenges. My goal is to leave as much of the original plastic in place so that it looks like the static model. So far I've only built a new front axle and got it to steer. I took a picture of it with the Euc to show the size difference:eek:.

Thanks for looking

Reg

Re: Another Bruder Mack conversion
 

Looks good so far! I want to do a Mack dump, its on my list of things I wanna build!

Re: Another Bruder Mack conversion
 

I finally had another look at the Mack today. I picked up a $15 360 servo a couple days back for the screw drive on the box. It is a little slow...OK it's quite slow but it does work fairly well. If I get too bored waiting for it to go up and down I think I'll pick up a drill bit for it but for now it's good enough. Now I just have figure out how to drive the wheels and it will be done:confused:.

Reg

Re: Another Bruder Mack conversion
 

Well I spent most of the day messing with the drive on this and finally got it to drive under it's own power. I'm happy that it is up and running but I'm not impressed with the power of the gear motors that I had so some different ones will be on order soon. Currently it is running on a 7.2v battery but I did try it with 12v and it was much better so I may upgrade that as well if I can find space for it. I've tried to leave this as stock and unmodified looking as I could so it hasn't been easy but thats the fun part right:confused:?

Thanks for lookin, video is to follow

Reg

Re: Another Bruder Mack conversion
 

Very nice build Reg ,look forward to the vid.

Re: Another Bruder Mack conversion
 

A short video of it in the house. http://youtu.be/-8qTlnosdNc

Re: Another Bruder Mack conversion
 

I've had this ripped apart for quite some time but have been too busy to work on it. The old setup was not powerful enough to run loaded so I needed to change things around. I ordered some parts a couple weeks ago for it but when the stuff got here I realized it wasn't going to work so I did this instead. I still don't know if this will work either but I'll give it a try and see what happens. One thing is for sure, it won't lack power this time. I made up the walking beams today and modified 4 Black & Decker cordless screwdrivers to fit. They each make over 300ozin of torque at 6v and turn 130rpm. I'm running a 7.2v battery so it should be plenty good enough for my needs. I just hope it will steer!

I'll try to get it wired tomorrow so that I can giver a test drive!

Thanks for looking.

http://i1293.photobucket.com/albums/...ps8a201b7d.jpg
http://i1293.photobucket.com/albums/...ps00014214.jpg
http://i1293.photobucket.com/albums/...pse8e2eb8d.jpg
http://i1293.photobucket.com/albums/...ps404d1bd5.jpg
http://i1293.photobucket.com/albums/...ps5b4f9fa3.jpg
http://i1293.photobucket.com/albums/...psae15997f.jpg
http://i1293.photobucket.com/albums/...psc2f6a4e5.jpg
http://i1293.photobucket.com/albums/...psfb8a8dbd.jpg
http://i1293.photobucket.com/albums/...ps873ab0f4.jpg
http://i1293.photobucket.com/albums/...ps1f3be186.jpg

Reg

Re: Another Bruder Mack conversion
 

Way kool engineering! I like the gear head and motor set-up. Very nice.

Re: Another Bruder Mack conversion
 

Nice tandem's Reg :D:D:D:cool: I like it!
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

True walking beam. A bullet proof design still used today.

Re: Another Bruder Mack conversion
 

That's what I was hoping would happen but I guess I won't know until I try it. I was also thinking that I could run a sabertooth speed control and use some mixing to slightly slow the inside wheels during a turn but that's a lot more complicated than I would like!

Re: Another Bruder Mack conversion
 

Well away we go...Things are a little hay wire at the moment because I fried the BEC portion of the ESC when I had it in my Kenworth. I have a separate BEC hooked up so that it will power up for now but I will have to pick up another ESC down the road. Since the video I have put the 7.2v battery back in and put the box back on. I also raised the front slightly to match the rear.

Thanks for looking! http://youtu.be/_UmNEmYPtrU

http://i1293.photobucket.com/albums/...psb0740a91.jpg
http://i1293.photobucket.com/albums/...psf504f06e.jpg
http://i1293.photobucket.com/albums/...psb52597a2.jpg
http://i1293.photobucket.com/albums/...ps2313db56.jpg
http://i1293.photobucket.com/albums/...psa3498e1c.jpg

Re: Another Bruder Mack conversion
 

Looks like a east coast spec Mack.. Just needs spokes and "service" across the roof gard or front bumper...Looks like you have room for a side mount Hyd tank or tool box too...


Looking good!

Re: Another Bruder Mack conversion
 

When you do it right, people won't know you have done anything at all. This thing looks static, great work!

Re: Another Bruder Mack conversion
 

Nice work Reg! Those rear walking beam gear motors sure work well. I doubt a stock Tamiya rig could climb the slope like that little Bruder. Almost like having locked differentials. That's pretty impressive.

Re: Another Bruder Mack conversion
 

Thanks a lot guys. My original plan with this truck was to keep it as out of the box looking as possible and I think I have finally got it to work well enough to make me happy while still kinda looking that way. It does have a lot of power and seems to have OK traction even with the plastic tires. I've never owned a KH so I'm not sure how it would compare. When driving on the 3/4 crush rock in our driveway you can notice the rear tires slipping a little but I think it is mostly to do with the harsh ride of no springs and no flex in the tires. One day I would like to upgrade it with some proper tires but until I can find a cheap used set I will leave it this way. I want to improve the dump a little as the plastic "ram" and mounts flex a lot with weight in the box. Once I get that done it will be time to heap it up with the Volvo and test it out.

Reg

Re: Another Bruder Mack conversion
 

Little bit of a test run.http://youtu.be/DHys6uFcUlM

Thanks for looking!

Re: Another Bruder Mack conversion
 

Looking good!! Looks pretty smooth running!

Re: Another Bruder Mack conversion
 

Couple crummy video's from today....http://www.youtube.com/watch?v=P8aV2eqDwwc http://www.youtube.com/watch?v=21Ug51smnX4

Thanks for looking

Re: Another Bruder Mack conversion
 

That looks like alot of fun. Nice work.

Re: Another Bruder Mack conversion
 

Thanks, Running the Cat is a little boring because of it's speed or lack of it. I think the speed is realistic though so I guess it's just one of those things you have to learn to like. I need a bruder excavator or wheel loader now to go with the truck and dozer....this never ends....

Reg

Re: Another Bruder Mack conversion
 

Hey Reg, How about a Melroe 880 wheel dozer, for a project? http://www.youtube.com/watch?v=rFYPMjnXkFM or maybe a 675 Michigan loader?
http://www.youtube.com/watch?v=SnTA52Hy6xM part1
http://www.youtube.com/watch?v=o5E7fBrzA7A part2
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

Haha, Neil that 675 is a monster. I don't think I will scratch build anything at this scale yet. I wouldn't mind converting a Bruder loader though. I just can't seem to find one cheap enough. Everywhere I look at them they end up being $80-90 bucks with tax and shipping.

Re: Another Bruder Mack conversion
 

Yah, but it has 2 V? Detroits for power units! Screamin Meemees!
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

I am kind of a fan of anything that has 2 stroke Detroit power....

Re: Another Bruder Mack conversion
 

Wow, that would be a big model in 1:14, 50 feet:3.571 feet.
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

Haha! Can you imagine it in 1/10? Whoa! I guess in 1/14 at 3.5 feet it wouldn't be much longer than my Kenworth in 1/10 but it sure would make my Mack look tiny! It would be cool though.

Re: Another Bruder Mack conversion
 

I had a little fun with the 300 and the Mack today. Time with short lived with the Mack because the battery died but at least I got to pull a couple wheelies!:D http://youtu.be/C3fwQojwYRk

Re: Another Bruder Mack conversion
 

Lol! maybe some tail gate mod's? I like my high lift tail gate on my 1:1 Mack, and the bed vibrator, get's little kids attention :bounce: :D
That's some serious terrain to navigate, I'm surprised how well the Mack drive's in it!
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

Thanks Neil,

Bed vibrator....hmmm. Oh yeah on the Mack sorry.:p

It does get around pretty good. Trying to drive where I've been with my mini excavator is tough going for such a little model. I would like to get my hands on some small acme thread for the dump drive to speed it up a bit. Kinda like watching paint dry(or lately for me fiber glass) but it is powerful. I think a drill bit will make it struggle to lift it but I may try that anyway.

Re: Another Bruder Mack conversion
 

Hey Reg, who is the Canadian version of mcmaster Carr?
Somebody should stock it up there? (acme thread)
P.S. had to use the bed viber every load yesterday, sticky clay,
And 42 degree's just insn't steep enough, of a dump angle.
Cheers, Neil.

Re: Another Bruder Mack conversion
 

I finally got around to upgrading the screw drive to ACME thread. Works much better now...http://youtu.be/cmOm0Gn_qnI

http://i1293.photobucket.com/albums/...psa8b215cd.jpg
http://i1293.photobucket.com/albums/...ps9a7fdc15.jpg

Thanks for looking

Re: Another Bruder Mack conversion
 

Nice upgrade Reg, ever thought about robbing the acme thread from a cheap vice?
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

I quite enjoyed seeing your Bruder Mack build and the videos, you sure have a nice area to use your stuff too.

Re: Another Bruder Mack conversion
 

Hello friend as you have to rotate the front axle, for as you have wheels attached, you can get some pictures, I have a bruder truck and I would like to make, have made a good job

Re: Another Bruder Mack conversion
 

I used the Bruder axle cut down leaving a stub in each wheel. Then made my own floating axle and spindles. The stubs of the Bruder axle pass through each spindle and then a washer is welded to the inside to prevent it from coming out. A little bit of lubricant on the axles and they turn easily with the light weight of this model. I'm sure there is a better way of doing this but it was very quick, easy and cheap for me to do it this way.

http://i1293.photobucket.com/albums/...psac01f8d5.jpg
http://i1293.photobucket.com/albums/...ps0d90a43c.jpg
http://i1293.photobucket.com/albums/...psae990881.jpg

Reg

Re: Another Bruder Mack conversion
 

Hmm, better yet, use cheap "C" clamp's to cut up for screw drive's, acme thread.
Cheer's, Neil.

Re: Another Bruder Mack conversion
 

Good ideas Neil. The treaded rod from McMaster is pretty cheap but everybody that builds stuff has a bent C clamp don't they;). Sounds like a good swap meet item too!

Re: Another Bruder Mack conversion
 

Thanks friend for the explanation and the photos, I have a bruder scania and I want to modify using your own wheels and I had no idea how to do

Re: Another Bruder Mack conversion
 

Hi,

What motors and gears and speed controller did you use as im looking to do the same for my son as a present?
Cracking build thread.

:bounce::bounce: