Posted by donjr on October 08, 2012 at 19:08:55 from (72.71.177.74):
In Reply to: Re: Tractor Firsts posted by IaGary on October 08, 2012 at 18:53:01:
Mechanical hi-lo clutch, not really a 'powershift' by a long shot. And A-C had a hi-lo bar on theirs pretty early also, which gave them a form of 'live' PTO on some WD's. The MTA was still a gear drive tractor with 5 speeds and the TA. The Ford Jerk-o-matic was about the first automatic, and later bought by JD and turned into a smoother 'powershift', available in the -010 series. There might have been a few other attempts at a powershift transmision, but I never saw them around here. The first IH machines I can remember having a true powershift tranny were the Hydro's, I think in the -56 series in the mid 70's.
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