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-   -   Mack M75SX (https://www.rctruckandconstruction.com/showthread.php?t=1557)

sneaky-pete 03-22-2011 02:49 PM

Re: Mack M75SX
 
Nice work as always Steve.....keep the pics comming!

steamer 03-22-2011 03:23 PM

Re: Mack M75SX
 
Steve. Looking forward to pictures of that setup.
Rob

sparkycuda 03-22-2011 03:48 PM

Re: Mack M75SX
 
This truck is really looking really good. I understand you are running twin motors with different-from-stock pinions and driven gear going into the transmission? Would appreciate some detail on what gears you are running and did you have to build the two-motor bracket.

Thanks!

Ken

ihbuilder 03-22-2011 04:05 PM

Re: Mack M75SX
 
Ken It's an E-max tranny they come with 2 motor set up . The best guy to tell you about what I have would be Travis . I'm kinda trusting his jugement on the motor trans setup . If it works and has what I need for the pan , I'll be putting these in them too . I like the 2 speed idea . :)


thanks Troy ;)
Rob the set up will take longer to true it up then to cut . If I get the CNC mill working , it'll be easier on that then the lathe , I'm thinking . If not then in the 4 jaw .

Steve

Heavy Metal 03-22-2011 10:11 PM

Re: Mack M75SX
 
Just awesome work on this Steve. Looking great!!

What specific flux are you using on the alum?...was thinking about giving this a try...but not a welder. How hot we talking...do I need real tanks and torch or something that could be done lower heat like w/ little coleman propane torch?

Joe

ihbuilder 03-22-2011 10:28 PM

Re: Mack M75SX
 
thanks Joe B. , On the thin sheet a little propane will work but .125 and up gota use some heat . I got alumna flux at the hardware store made by forney and thought I give it a shot . you just got to watch the heat on the sheet , you'll warp it just like steal . It's hard for me to explain how , since I do it by feel :o . I only messed with it on some scrap , so we'll see how I do on the truck :confused:

Steve

mazdaparts 03-22-2011 11:53 PM

Re: Mack M75SX
 
The Emaxx tranny is a beautiful thing. I use them for most of my trucks. Are you gonna keep the 2 speed or make it a single speed? There used to be a conversion kit that almost cut it in half and basically locked it in 1 gear. I think you can still get an aluminum tranny case for it as well. Make sure you don't over tighten the tranny mounting screws, they strip out easily.

russisloud 03-23-2011 02:44 AM

Re: Mack M75SX
 
really starting to look like a dump truck now. its coming together great

ihbuilder 03-26-2011 10:17 PM

Re: Mack M75SX
 
Quote:

Originally Posted by mazdaparts (Post 23055)
The Emaxx tranny is a beautiful thing. I use them for most of my trucks. Are you gonna keep the 2 speed or make it a single speed? There used to be a conversion kit that almost cut it in half and basically locked it in 1 gear. I think you can still get an aluminum tranny case for it as well. Make sure you don't over tighten the tranny mounting screws, they strip out easily.

Quote:

Originally Posted by russisloud (Post 23062)
really starting to look like a dump truck now. its coming together great

thanks guys :)

mazda , I'm staying with the 2 speed

I did a little bit today :rolleyes: got the 2nd axle made up and started on the pinion shaft openings .

http://i830.photobucket.com/albums/z...r/PIC_1031.jpg

http://i830.photobucket.com/albums/z...r/PIC_1032.jpg


and when you get a couple of big puppies together you might end up with a lil puppy :p :eek:

http://i830.photobucket.com/albums/z...r/PIC_1035.jpg

thanks for looking :)
IHSteve

Bigrigger 03-27-2011 12:19 AM

Re: Mack M75SX
 
Cool! More Steve, more!!!!:D

kerst 03-27-2011 09:11 AM

Re: Mack M75SX
 
What kind of lathe do you use?

Kerst

ihbuilder 03-27-2011 09:14 AM

Re: Mack M75SX
 
Kerst , A Hendey , older then my grandfather :eek: early 1900's WW1

thanks trucker :)

td9clyde 03-27-2011 10:52 AM

Re: Mack M75SX
 
nice work i am tryin to watch and learn lol Izzy taught me alot when he was at my old place

SmallHaul 03-27-2011 11:12 AM

Re: Mack M75SX
 
Good progress Steve. That is cool that you are making the axles!

tc1cat 03-27-2011 12:11 PM

Re: Mack M75SX
 
Steve, Do you ever sleep??:rolleyes::rolleyes: Seems like you are always making something besides all of the wheels you make. Old big machines are not all that bad. Most are built heavier than the new stuff which means you can do more before they break!! Keep up all of the good work!

ihbuilder 03-27-2011 01:01 PM

Re: Mack M75SX
 
Scott , Clyde , lynn , thanks :)

Quote:

Originally Posted by tc1cat (Post 23421)
Steve, Do you ever sleep??:rolleyes::rolleyes: Seems like you are always making something besides all of the wheels you make. Old big machines are not all that bad. Most are built heavier than the new stuff which means you can do more before they break!! Keep up all of the good work!


Lynn , I put most of that lil puppy together sunday night after east mini truck meet .I basically used the merc running gear I had . I do not have much to do with it yet just make the body dump . As for the lathe , how many lil lathes take .25" off of 6061 t6 in a path ? my dad got a lil 7x10 clarke and said thats all he needed and didn't have a dino taking up space in the shop now he has me doing his stuff :eek:

I got more done will post tonight :)

kerst 03-27-2011 03:46 PM

Re: Mack M75SX
 
Quote:

Originally Posted by ihbuilder (Post 23408)
Kerst , A Hendey , older then my grandfather :eek: early 1900's WW1

thanks trucker :)

The old machines are nice. i have a South Bend, which is "only" 70 years old. I love that lathe!

Kerst

ihbuilder 03-27-2011 06:52 PM

Re: Mack M75SX
 
yes they are :)

well this is as far as I go today the lathe control needs to take a nap :(

input output bearing plates :) ready to shim and bolt :)

http://i830.photobucket.com/albums/z...r/PIC_1039.jpg

http://i830.photobucket.com/albums/z...r/PIC_1037.jpg

thanks for looking

td9clyde 03-27-2011 07:05 PM

Re: Mack M75SX
 
nice work slick job

Dreamweaver 03-27-2011 07:07 PM

Re: Mack M75SX
 
Steve I have no clue what it is I am looking at, but the mill work is awesome any how.

Great Job

P.S. I see a set of fenders in the back ground, I know someone that makes the proper mounts for them...:D


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