Hello Kalle, good to see you here & have your fine workmanship displayed here on this forum as well.
It's great to view your new undercarriage and see 1st hand the proper speed of these new planetary gh motors we special bought. Thanx for sharing.
And I like your new wide link tracks... I've got a few ideas to work at this winter to improve the narrower track link that I have to correct the issue of skipping off a track while turning.
Sometime October maybe I'll tear down my 850 to install my upgrade parts as well... I'm pretty sure my machine shop guy is too busy with harvest repair jobs to fit in my toy repair job into the mix atm.