D8R +463 in 1/5,6

[D8R]

Originally Posted by 9W Monighan

Can you run the final drives with an electric motor/pump combination?

Having 2 options now:
1-gas engine/hydrostatic drive as today + electrical driven pump for blade/ripper
2-electrical driveline (complete new) + electrical driven pump for blade/ripper
Option 2 will need more rebuild than no 1 of course, but have other positives like running inhouse (if there's a floor for a 500lbs machine with steel tracks)

If I can find suitable motors incl 90 degree gearbox within spec above, that would be a good solution.

Dan

[dozerbuilder]

Hey Dan. I did a lot of research for drive on my 1/16th CHTZ T-800 dozer and went electric for all the reasons you are considering.
http://www.rctruckandconstruction.co...ad.php?t=11337

I chose 25amp (stall) car seat motors @ 12V. Of course yours is heavier than my 60lb weight model.

Have you considered 24V wheechair worm-drive gear-head 90 deg motors? They are very powerful and generally run around 100-200RPM which could be controlled with an ESC motor controller, maybe a Dimension Engineering 60Amp.

Like these on aliexpress:
https://www.aliexpress.com/item/2013...479201429.html

Or this type here:
https://www.aliexpress.com/item/250w...1-17b1309b4cc1


They have all the engineering data you'd need to assess them. You could gear them down easily with say 06B ISO or 08B simplex chain drive at say 4:1 or 5:1 which would provide an output speed at the sprockets of approx 30-40rpm and would be very powerful.

[D8R]

It's been a long time with nothing happening. now I think it's time to finalize this build
My thought now is to make it electric drive and get a new smaller hydraulic system for blade and ripper (like Premacon).
Have checked a lot motors from China and most can not be fitted inside frame.
So, question to you guys, what's your expirience with using motors from drillmachines. Here's a picture of one possible motor, a Makita drill with a very powerful motor (up to 110Nm). Model needs 30Nm on each side to get a prototypical drawbar so there's some extra and motors do not need to go at maximum power. Will try use speed control and battery incl with drill.
Picture in next reply (due to slow loading)
Dan

[D8R]

https://scontent-arn2-1.xx.fbcdn.net...e7&oe=5C6EFF1D

[frizzen]

I know some elect drills give a 2speed trans. If drill motors don't fit, i've also heard automotive Power Seat Motors can work pretty well

Cool project, that's pretty sweet.