RC excavator CAT 320 build blog - Page 8 - RC Groups
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Feb 13, 2013, 01:39 PM
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Here is the Video Tom

My RC digger's first day digging in the sand... (19 min 9 sec)
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Feb 15, 2013, 04:27 AM
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Track testing in the sand (0 min 51 sec)

More digging (1 min 47 sec)
Feb 15, 2013, 10:15 AM
Team of ONE....or...Team Me
DeadTom's Avatar
That is way too cool, I also like the conveyor.
I can see that you are having alot of fun
Feb 25, 2013, 02:23 AM
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Originally Posted by DeadTom
That is way too cool, I also like the conveyor.
I can see that you are having alot of fun
yes i am having a lot of fun with it
Mar 08, 2013, 05:11 AM
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i have been moving so much sand with my excavator that my early Bruder conveyor belt gave up working (due to the poor conversion). when I converted it I reused all the bruder plastic parts and mounted a sprocket on the the plastic roller that moves the belt.

So I fixed that now, using following parts:
- M8 socket bolt, 8mm bearing, M3 bolt and 2 nuts (they fit into the M8 socket head) and I kept my sprocket which has a 6mm hole which I reduced to 3mm.

I drilled a 2.8mm hole in the M8 bolt and threaded the hole

as you can see the M3 nuts fit perfectly in the M8 bolt

this is the old plastic part that I was taking about which I now discarded

The sprocket will sit like this in the M8 socket head

and this will serve as the new strong axle to drive the belt:

As the M8 bolt will not go all the way through, I have drilled a 4mm hole in the other side of the plastic roller that drives the belt to fit a 4mm steel axle in the hole. I drilled a 2,8mm hole in the 4mm axle and threaded it:

I place a 3mm screw in the axle to fix it to the plastic roller

Now, another problem I had before, when using the conveyor, was sand in the chain. I fixed that by making a simple alu cover and fixed it to the body of the conveyor and to one of the free holes in the mounting straight-edge of the RB35

it works now like a charm
Mar 08, 2013, 06:58 AM
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loading up the modified conveyor. Very happy with changes made to it!

Using the modified conveyor belt (3 min 16 sec)
Mar 13, 2013, 12:25 PM
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I have a Fendt tracktor which may come in handy to transport my excavator. I thought I would do something with it. So I started the conversion:

For the motor's I am using a PVC tube. Perhaps I should make it in Aluminum....

Mar 14, 2013, 04:07 PM
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I got the wheels of the axis today and prepared them so I can fill them up with black silicone tomorrow. I will use the M12 size bolts to connect the wheels to the RB35 motors

both Front and rear wheels will be filled with black silicone so there won't be any dirt that can get into the wheels later on while driving the tractor around.

Mar 15, 2013, 03:05 PM
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I have filled my wheels with a heavy duty black all fix adhesive silicone...
they are quiet heavy now (not as heavy as with led)

when the silicone is dry, I will paint the grey PVC tubing red to make it look better.

I also drilled all the holes for the LED's

and I mounted the flashlights onto the plastic support so they will fit nicely back in place

I have ordered the motors, speed controller and servo's. waiting for the delivery now. Meanwhile I have time to play around with the excavator
May 04, 2013, 12:27 AM
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Hi great build. I have looked at all the photos and saw that you were selling kits. Are you still doing this and if so how much are you selling them for.
May 04, 2013, 01:25 AM
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Originally Posted by AMANSTEPH
Hi great build. I have looked at all the photos and saw that you were selling kits. Are you still doing this and if so how much are you selling them for.
Yes I do. I will send you a PM with the price.
Jul 26, 2013, 07:55 PM

Very cool...

PM or email me price details please rson123@yahoo.com (USA)
Jul 27, 2013, 06:35 AM
NH Armored Assault R/C Club
Commandernh's Avatar

Design Software

Nice project. I'm curious as to the design software you used. I use Solidworks,Pro E and Autocad for my design work. Very interesting the use of plates to achieve thickness. This is the method I use to produce specialized tooling for our Press Brakes. www.omnimetalsco.com .

Aug 19, 2013, 06:58 PM
Registered User

Man I like it

If your still selling these kits could you pm me. Anyone buy these kits and have theirs built yet?
Aug 25, 2013, 07:52 PM
Registered User
how much are you selling the kit for?

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