Re: D7E RC 1:7,5
 

Bob you are doing an excellent job. I am just starting to learn CNC and it is not easy for me but I guess it will happen some day. Ed

Re: D7E RC 1:7,5
 

It has been silent for a while on the thread. The where some issues with my mill, which are sorted out now.
In the mean while I have been working om the electronics and the drawings. I recently finished one side of the tractor and I am now working on the other side.

http://i803.photobucket.com/albums/y...pslv9alixw.jpg
http://i803.photobucket.com/albums/y...ps3zt60a33.jpg
http://i803.photobucket.com/albums/y...psebd2lq0n.jpg

The first run, still without the recoil tensioned. But the overall performance is not bad at all.

https://youtu.be/BhSus3TSL9w

Thanks for watching!

Re: D7E RC 1:7,5
 

Glad that you are back, this is looking very good, can't wait to see what else you have in-store.

Re: D7E RC 1:7,5
 

Thanks rc farmer,

I hope to have the tractor part driving soon.

http://i803.photobucket.com/albums/y...pstmt6ifwf.jpg

The other roller frame is close to be finished.

Thank you for watching!

Re: D7E RC 1:7,5
 

Looks very good, will follow progress closely.
Dan

Re: D7E RC 1:7,5
 

Thanks for the complements, still al long way to go.
Hereby the status as it is now.

http://i803.photobucket.com/albums/y...pssfpsop0k.jpg
http://i803.photobucket.com/albums/y...psbhvceh5o.jpg
http://i803.photobucket.com/albums/y...psqytxo6al.jpg

Re: D7E RC 1:7,5
 

Wow!! Love what you did with the motors!! I'm sure you will be happy with them. I used similar in my dozer (big wiper motors) and they have never stalled, worn out, or given any problems, two+ years now and still good. May want to make sure before I say that :) lol!! This is really looking good!! Heavy!!

Re: D7E RC 1:7,5
 

Thanks for your feedback Cooper, I hope the motors will do as good as yours. They actually come from a Cat 740 ATD. Regulating the speed is still a challenge, and hopefully the power consumption is not too much.

Re: D7E RC 1:7,5
 

I got to hand it to you working with steel is a lot harder than aluminum but it will last a lot longer. Ed

Re: D7E RC 1:7,5
 

Nice!!! Really like what you have done....looking forward to seeing this build take shape....

Re: D7E RC 1:7,5
 

Nice, love the wide tracks...

Re: D7E RC 1:7,5
 

I managed to get the D7E running.
The project will be silent for a year, I'll be building a house first.

At least the power train is done.
Still enough to finish, but I'm glad it is moving.

A little video.
https://youtu.be/ezx7_X_h47w

Thanks for watching!

Re: D7E RC 1:7,5
 

Wow!! Very smooth. I guess you are on the list of places to visit, take you out for a late night of partying, then I can quickly slip away with your dozer!!! I know Ed complimented you on working with steel, I also agree, tuff to work with on these small parts but doing an excellent job. Looking forward to your next steps. Good luck with the house, I too am prepping for a summertime move.

Re: D7E RC 1:7,5
 

That's what is was saying while watching the vid o "wow and smooth"!

I can't get over how big that thing is, going to seem even more so when you get it finished!

Jim

Re: D7E RC 1:7,5
 

Thanks for all the comments guys!

Making the small pasts is a challenge, but I am fortuned to have a CNC mill. The components are drawn in 3D first, after which I can create the CNC program directly in the same software. That makes life easy.

Yes, it is rather big. Building scale 1:8 has that consequence. The machine will be up to 1000mm long, once the blade and ripper are installed. My guess is that the weight will be around 10kg. The size has the advantage that I can use normal components, and the machine will also actually be able to move some dirt.

Regards, Bob.

Re: D7E RC 1:7,5
 

Very impressive Bob. That´s the advantage with such beefy motors - almost silent, probably torque without end. Evidently that´s 100kg. I´m only a bit confused about the scale: Title says 1:7,5 but you just wrote 1:8???

Stefan

Re: D7E RC 1:7,5
 

Very nice work so far look forward to more.

Re: D7E RC 1:7,5
 

Stefan, The overall scale is 1:8, however some parts are slightly bigger. In the beginning when I was only building undercarriage parts, the overall scale was 1:7. If you count the links in the link assemblies, you will find one less than the real machine has. It came out like that, using the bearings I found.

Thanks for watching.