last one .. and then I have pullers outta my system for a while
I lied .. I am not quite done.
Though I like it, I am clearly NOT "into" tractor & truck pulling since I didnt know basic things about NTPA until
@LocuMob pointed it out above. Hell, I havent been to a pull in 20 years and then less than 5 events in my life.
Unlike drag racing, which I was forced to learn that sport because I was a corporate sponsor, we constantly "stiff-armed" the puller segment .. what they were building/running were NOT like anything coming out of our factories. So a corporate ROI calculation always failed.
But, there is stunning engineering and creativity in pulling that makes it unique in many ways. Big HP, big noise, smoke and fire .. still quite the spectacle. What started at "pulling on Sunday, farming on Monday" has evolved substantially over the years.
Helicopter turbine mills, piston airplane engines, blown Hemi's .. mixing/matching, 3,4,5 engines at once, gear boxes, superchargers vs. turbo's or both .. and have it all NOT blow up on you (let alone overall safety). That takes skill.
HOWEVER .. still not sure though HOW anyone can make a living at pulling -- thats the business nerd in me. I am having trouble seeing the ROI (return on investment) in pulling. I see a sh*t ton of INVESTMENT -- the RETURN part is still a little hazy
Anyway, f ound a cool
engine builder site with a focus on "modified" tractor pulling classes. Its older (2017) piece, but still fascinating. I am sure cooler/newer tractors have appeared in the past five years..
Now I'm done --- for now..
source:
Immovable Objects & Irresistible Force
Excerpt and photos below:
"Probably the biggest difference from other motorsports is the multiple engine configurations of the Modified Class.
This class started out with single engine configurations, but found that more power could efficiently be made with the use of multiple blown alcohol engines joined precisely together.
Through the years, the tractors have seen three, four, five and more engines. The complexity of joining these massive engines boggles the mind, and also the pocketbook.
The number and type of engines vary with the particular class. Just check the array of engines that are legal including automotive engines (such as Mopar and Chevy), V12 WWII Allison aircraft engines, and even Lycoming jet engines!
And modified tractors sure don’t look like their Stock Class stock-appearing counterparts. They are more like an old style front engine rail dragster with the engine or engines sitting in front of the driver. "
And even though the modified tractors are different in appearance and size, they all must use the same 30.5×32 tires.