Pete Phillips Posted December 28, 2015 Share Posted December 28, 2015 The man who built this must have been mad! And also a mechanical genius. Two GMC sixes, side-by-side. With automatic transmission. Absolutely amazing. I would pay money just to see this in person! http://www.ebay.com/itm/Other-Makes-Twin-Engine-Semi-Tractor-One-Of-A-Kind-/151929039356?forcerrptr=true&hash=item235fad29fc:g:feIAAOSwwbdWJZTs&item=151929039356 Link to comment Share on other sites More sharing options...
auburnseeker Posted December 28, 2015 Share Posted December 28, 2015 Looks like they used 2 complete drivelines. You can see 2 driveshafts, so each rear end was driven independently. The clutch pedal assembly and linkage would be pretty interesting as well as shifting unless they used 2 powerglides or Hydramatics or everything was welded together so when you moved one, they both worked. Link to comment Share on other sites More sharing options...
countrytravler Posted December 28, 2015 Share Posted December 28, 2015 Looks like they used 2 complete drivelines. You can see 2 driveshafts, so each rear end was driven independently. The clutch pedal assembly and linkage would be pretty interesting as well as shifting unless they used 2 powerglides or Hydramatics or everything was welded together so when you moved one, they both worked.AS IS! HAS NOT RUN FOR MANY YEARS, BUT WE HAVE CHANGED ANTIFREEZE AND TURNED THE MOTORS OVER EVERY YEAR TO KEEP THEM FROM SEIZING UP. MY DAD HAD THIS BRAINSTORM BACK IN 1952 AND STARTED OUT WITH JUST 2 CLEAN FRAME RAILS, TOOK GI 6X6 REAR END HOUSINGS SO ONE DRIVE LINE COULD GO OVER THE FRONT REAR END TO DRIVE THE BACK REAR END (EACH ENGINE & TRANSMISSION DRIVE EACH REAR END) POWER BY 2-302 INLINE 6CYL. GMC ENGINES WITH 4-SPEED DUAL RANGE AUTOMATICS. HE HAD THE FRONT & REAR AXLES WIDENED OUT SO THE ENGINES WOULD FIT BETWEEN THE FRAME RAILS ( I THINK 6" to 8") HAD SPECIAL RINGS TO BOLT THE 2-SPEED REAR ENDS 3rd MEMBERS IN AND THE AXLES WERE CUSTOM MADE ALSO, THERE IS 2 COMPLETE WIRE SYSTEMS ONE FOR EACH ENGINE, 2 GAS PEDDLES NEXT TO EACH OTHER, 2 BRAKE PEDDLES THE RIGHT ONE FOR THE FRONT AND BACK AXLES AND THE LEFT ONE FOR THE FRONT REAR END, 2 TACHOMETERS AND TOP IT OFF WITH A NEW INTERNAL SLEEPER CAB THAT WAS USED BY INTERNATIONAL AND A COUPLE OTHER MANUFACTURES AT THE TIME. MY DAD PASSED AWAY AND NOW IT'S MINE. I ALWAYS WANTED HIM TO RESTORE IT WHEN HE WAS ALIVE! HE WAS A USED TRUCK DEALER HERE IN SPOKANE WA. FOR MANY YEARS. OUTSIDE OF A LITTLE SURFACE RUST IT IS VERY SOLID!!!! THE REASON HE BUILT THIS BRAINSTORM WAS BACK THEN IN THE EASTERN STATES YOU HAD A 45' OVER ALL LENGTH RESTRICTION AND NO HORSE POWER AND WANTED TO BE LIGHT WEIGHT. HE FINISHED IT IN 1954 IT WEIGHED 10,500 LBS FULL OF GAS WITH A SLEEPER CAB. MOST SEMI TRACTORS WERE OVER 14,500 LBS BACK THEN. IN THE 1st 6 WEEKS (IN THE EXPERIMENTAL STAGE) HE AND ANOTHER DRIVER WERE IN 18 STATES AND CANADA WITH PAYLOADS GETTING THE BUGS OUT. HE NEVER HAD A LOADED SEMI PASS HIM ON ANY MOUNTAIN PASS. YOU SEE THE ENGINES ARE NOT SYNCHRONIZED SO ONE ENGINE WOULD KEEP PULLING WHILE SHIFTED THE OTHER ONE A HALF GEAR. WHEN HE WOULD PASS THE UNITED BUCKINGHAM TRUCKS GOING OVER LOOKOUT PASS THEY WOULD HAVE A FOOT OF FLAME COMING OUT OF THE TOP OF THERE STACK TRYING NOT TO BE OVERTAKEN (THEY WERE THE KING OF THE ROAD BACK THEN AROUND HERE) WITH EXCELLENT DRIVERS TO KEEP FROM MELTING THE DIESEL (280 BUDA PUMPED UP) ENGINE . Link to comment Share on other sites More sharing options...
auburnseeker Posted December 29, 2015 Share Posted December 29, 2015 I was in a hurry and didn't read the write up. Usually guys that end up with stuff like this have little history on it and just fluff out a description. It's great knowing it's history and what it is constructed with. Link to comment Share on other sites More sharing options...
JACK M Posted December 29, 2015 Share Posted December 29, 2015 Interesting for sure.I watched it the last time it was listed. Link to comment Share on other sites More sharing options...
Ttotired Posted December 29, 2015 Share Posted December 29, 2015 That would be an awesome thing to restore (hotrod actually) Definitely be different to drive Mick Link to comment Share on other sites More sharing options...
JACK M Posted December 30, 2015 Share Posted December 30, 2015 Two drivelines, one for the forward rear end and the other over that one to rhe rearward rear end So the driver could leave one throttle open and change gears on the other. Easy to keep momentum. Lots of foot work.Some of those old truckers ain't so dumb. Link to comment Share on other sites More sharing options...
countrytravler Posted December 30, 2015 Share Posted December 30, 2015 Two drivelines, one for the forward rear end and the other over that one to rhe rearward rear end So the driver could leave one throttle open and change gears on the other. Easy to keep momentum. Lots of foot work.Some of those old truckers ain't so dumb.With these having duel range automatics, it made life a little easier. This was not that uncommon as you would think. Link to comment Share on other sites More sharing options...
Eldovert Posted December 30, 2015 Share Posted December 30, 2015 Very cool truck,I am not sure what the motivation was to build this truck..the Hall-Scott 400 was king of the hill back then and would pass everything else. Fuel consumption was atrocious though and that may be the reason why this truck was parked.Cheers,Pat Link to comment Share on other sites More sharing options...
Restorer32 Posted December 30, 2015 Share Posted December 30, 2015 Years ago there was an article in one of the antique truck magazines picturing and describing several twin engined trucks. I believe they were privately built to haul heavy steel fabrications. Interesting truck but I don't think it was the only one ever built. Link to comment Share on other sites More sharing options...
Restorer32 Posted December 30, 2015 Share Posted December 30, 2015 If you Google "twin engine truck" you will see several examples of twin engined heavy haulers. Link to comment Share on other sites More sharing options...
countrytravler Posted December 30, 2015 Share Posted December 30, 2015 (edited) Click on the blue line. It will direct you to a Hemmings article on dual engines. Do not know why it posted as a line.dual-engine | Hemmings Daily Edited December 30, 2015 by countrytravler (see edit history) Link to comment Share on other sites More sharing options...
1939_Buick Posted December 31, 2015 Share Posted December 31, 2015 Not the same as ebay http://theoldmotor.com/?p=130391Has some good drawings Link to comment Share on other sites More sharing options...
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