T-Rex - my towable wood chipper

[ruxu]

Thank you for your kind praise.

I did not make the blades myself as ready made blades for a commercial chipper were available for 20€ a piece. They are for a Kellfri 100 chipper - basically the same as a Jinma chipper. I used two rotor blades and one anvil blade.



For balancing of the rotor I made two brackets with small bearings that I fitted on my car stands. I also made a adjustable alignment tool to set the rotor correctly to the axle before welding in order to avoid rotor wobble. When the rotor was completely welded I rotated it on the balancing stand and had to add a small piece of plate to get it balanced. Actually I first welded the plate piece and then had to grind off a little bit. I thought this was easier than removing material from the opposite side by drilling shallow holes due to the size of the rotor.



Hopefully this answers your questions.

[ldescour]

Well done Ruxu.
I'm fixing my wood chipper. My controller has burned out, and I would like to replace it with the arduino. Would you agree to share your arduino program and a small plan of the arduino inputs/outputs?
Thanks a lot,
Louis

[ruxu]

Hi Idescour,
As several years has passed since I made my chipper it took me a while to find everything and I had also to redraw the Arduino pinout diagram as I could not find the original one. Here you have the complete chipper electrical wiring, the Arduino pinout, the code and a picture of the Arduino build. I used a protoshield for the additional parts.

Main Control Box.pdf
Operation Buttons Box.pdf




Chipper_iFeed_RC2.ino.txt Remove the .txt extension from the file and put it in a folder named Chipper_iFeed_RC2




In the code you have to change the inductive sensor pulse value and the rpm values to suit your chipper setup. Hopefully this helps you to get your chipper working.

[motorhead]

Congratulations! That's one heck of a build you made! What's your background in-engineering or one of the metal trades? Whatever it is they sure lost out when you retired. SISU!

[cguthrie]

I’m trying to find the plans for this unit. It may be obvious however, today I’m blind in one eye and can’t seem to see out the other. Where is the link to download the plans for the chipper build

[ruxu]

I’m trying to find the plans for this unit. It may be obvious however, today I’m blind in one eye and can’t seem to see out the other. Where is the link to download the plans for the chipper build

The build plans are not released here. I just looked on my NAS and the chipper is designed in an old Autodesk Inventor app and there are almost 400 files. They are all in Finnish and I have not corrected them to reflect small changes made during the build.