Fumotec Komatsu 490 LC build

[dozerbuilder]

Thanks for you time putting this great build thread up. It's good to see exactly how this is coming together along with the detailed measurements.

[Rakthi]

Originally Posted by mcCracken15

And here i thought you had taken it apart just for me! Thanks for that though! It helps a lot. my smaller idlers are 12.70 mm and my front idler is 34.50mm. my fronr idler will be bigger for sure but my smaller ones will be larger than yours all because i think so far i am going to use roller chain and tig small nuts to the outside to mount the tracks to. but i will run aluminum bar threw a table saw ti get the track cleats much like yours.

In truth, your question kind of forced my hand otherwise I would have postponed this bit of maintenance until the whole thing jammed completely.

Good luck with your build! Just make sure your front idler is same diameter as your drive wheel.

Originally Posted by dozerbuilder

Thanks for you time putting this great build thread up. It's good to see exactly how this is coming together along with the detailed measurements.

No sweat ... just wished I had taken more pictures, especially of the electronics in the undercarriage. Measurements can be made, but it have to be accessible items. Maybe I will make some more pics/measurements when I have to sort out the bit of slop that is developing in the slewing mechanism. The grubscrews on the inaccessible bottom gear are loosening up. Going to be a big job that. My own fault that. The gears were all coated in a film of oil, should have degreased them better than I did. Now the Loctite not holding at 100%.

[Prop Shaft]

Just came across this thread as well as you man build. This is one sweet excavator! Have you played with this much? I'm seriously considering an excavator as my next big rc purchase. Couple questions, can you buy these complete? Electronics and radio included? And if you dont mind me asking, whats the price tag on it? I was considering the rc4wd offering. It seems pretty inexpensive, but Ive heard alot of bad things about the quality of it. Plus it doesnt look all that realistic imo. Appreciate the info. Thanks.