my first semi build (dump)

[smart racer]

The build is really making progress...cab/frame/fender placement makes the Autocar really look scale....great to see the building talent on the South and North Island

[chaseracer]

hi guys it has been a while since I posted. my life is very busy here so not much time for hobbies, but I did get some time tonight after my sons hockey game to work on the autocar, instead of spending nights just thinking about it and doodling ideas on paper.

So I will start my small update here. a few nights ago I sketched out a scale drawing of what I want my Autocar cab to look like . it is quite a bit different then the stock king cab. lots of little mods.


also sketched out a rough box design.


now on to tonight.

cut away hood sides so I can start fabing up new side and incorperate the new fenders.


and since I was in the cutting mood and feeling a bit crazy, I decided to fix the problem with cab height, (it is too high for a autocar) so I ................
Cut the roof off. then took a 7mm section out of the middle and set the roof back on. just rough right now




then I marked where the windows get lowered about 5mm. and rough cut it out.



here is a idea of what it looks like on the chassis.




thanks for looking

[steamer]

Jason. Starting to look more like an A car now. Roof line looks spot on.
Rob

[Dreamweaver]

Looking good Jason. I'm not sure if you know this and just have not done it jet, or if you are scratching your head trying to figure it out.

To get the roof to fit right from the point you have it, you will need to cut it in half from left to right and add a filler piece.

Good job tackling that big of a modification on a shell..

-Mike

[DieselKid]

Coming along beautifully Jason! Starting to look like a real brute!

-Alex

[chaseracer]

Originally Posted by Dreamweaver

Looking good Jason. I'm not sure if you know this and just have not done it jet, or if you are scratching your head trying to figure it out.

To get the roof to fit right from the point you have it, you will need to cut it in half from left to right and add a filler piece.

Good job tackling that big of a modification on a shell..

-Mike

thanks guys, and thanks for the great tips Mike, although I did plan to split the roof to make up the gap in front window pillar but is was getting late last night and I got lucky with all my other cuts , so I didn't want to press my luck

hopefully more to some soon, I really need to make time to work on this.

[chaseracer]

next update, well in order to make this dump dump, it needs power to move the screwdrive. the common way is to hook seperate motor up to the screwdrive controlled with a second esc and channel, well I wanted to try something different, so with some ideas in my head and friends like Redbull with more ideas and tools, then me. I spend the day at Redbulls (mikes) sunday, and we worked on making a pto style system off the transmission. in order to make this work I needed to make a second shaft come out the back of the tranny. so it would provide power for my pto.

stock tranny.


so the idea is that the 3 speed tranny will operate the pto, meaning I don't need another motor mounted on the truck. so order to do this, we need to make a netural gear so I can make the dump go up and down without the truck moving but I can make it go up with it in gear too. so we figured who needs third gear anyway. .

so take that third gear out.



now on to the fun, the shaft inside the tranny is splined so I couldn't just stick a longer rod in there to get the longer output I wanted so because I need the splines, this is what we did.



we cut the top shaft in half then we will flip the long side around , reattach the shafts with a custom made cupler so second gear lines back up, and now we have a second output out the back.





so I know you are all thinking that the shaft spins all the time so how to you stop the box from going up and down all the time.
this output will power the shaft to the screw drive but this conector shaft (pto) can be engaged and disengaged with a servo. more on that later as all the work is not done on that yet.

I know there will be a few issues and I know there might me some some cons to this setup but I wanted to try something different. and trying something different is fun, or at least that is what I try to tell my wife
thanks for looking

thanks to Steve for the nice coupler he make on his lathe

[Dreamweaver]

Wow Jason, very impressive. Thinking outside the box... That's the way to do it.

-Mike

[redbullcrawler]

Originally Posted by chaseracer

next update, well in order to make this dump dump, it needs power to move the screwdrive. the common way is to hook seperate motor up to the screwdrive controlled with a second esc and channel, well I wanted to try something different, so with some ideas in my head and friends like Redbull with more ideas and tools, then me. I spend the day at Redbulls (mikes) sunday, and we worked on making a pto style system off the transmission. in order to make this work I needed to make a second shaft come out the back of the tranny. so it would provide power for my pto.

stock tranny.


so the idea is that the 3 speed tranny will operate the pto, meaning I don't need another motor mounted on the truck. so order to do this, we need to make a netural gear so I can make the dump go up and down without the truck moving but I can make it go up with it in gear too. so we figured who needs third gear anyway. .

so take that third gear out.



now on to the fun, the shaft inside the tranny is splined so I couldn't just stick a longer rod in there to get the longer output I wanted so because I need the splines, this is what we did.



we cut the top shaft in half then we will flip the long side around , reattach the shafts with a custom made cupler so second gear lines back up, and now we have a second output out the back.





so I know you are all thinking that the shaft spins all the time so how to you stop the box from going up and down all the time.
this output will power the shaft to the screw drive but this conector shaft (pto) can be engaged and disengaged with a servo. more on that later as all the work is not done on that yet.

I know there will be a few issues and I know there might me some some cons to this setup but I wanted to try something different. and trying something different is fun, or at least that is what I try to tell my wife
thanks for looking

thanks to Steve for the nice coupler he make on his lathe

You need to get this project back to the shop so we can have more fun making the pto

[chaseracer]

worked on my new box sides tonight here is what I got done.






X2