> Delco decided to design a push-pull self loading DE scraper using a single 6V71 or 8V71 (or 92 series) in the front driving a DC generator and using an electrical transmission with 250 HP EMD traction motors F $ R (not sure how steering was accommodated). A single prototype was build by modifying a current design twin engine scraper but the design was never commercialized because the end of the interstate highway system was on the horizon and marketing decided that resources could be better spent elsewhere.
Dean, most scrapers use articulated steering, although some have come out with steerable front ends. John Deere made a few that way, I know.
I wonder if there are any diesel-electric scrapers in production. It looks like Caterpillar uses mechanical drivetrains for all their models, including the big 44 yard 657. Scrapers can't really use the high torque a D-E drive can provide, because they'll just spin their tires. You try to keep your speed up and take a small cut to avoid spinout. In the scrapers I used, first gear didn't get much use.
LeTourneau had an interesting take; their machines used electric motors, not for propulsion but for steering and operating the elevator. We had a C-pull, which was horribly unreliable; another nearby contractor had a pair of the larger B-pull scrapers, which I suspect were even worse. Instead of steering wheels, the LeTourneau scrapers just had a toggle switch on the dashboard to steer. There was a bar across the dash to hang onto so you didn't fall off. The pipes for the screaming 8V71 Detroit were right next to the operator; if you weren't already deaf when you started work, you would be at the end of the day.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.