Showing posts with label snow machines. Show all posts
Showing posts with label snow machines. Show all posts

Tuesday, November 20, 2018

Harley Davidson snow bikes highlight the motorcycles' optional winter use


Harley-Davidson had Suicide Machine of Long Beach Ca build these from Street Rod 750s, and a snow track kit.

The bikes started off as bone stock XG750 Street Rods from Harley and track conversion kits Camso DTS-129 from a dealership in Salt Lake City, Utah



It's not a painfree bolt on though, because the  the Camso units are built specifically for dirt bikes, not street bikes, which means the track unit does not have a straight chain alignment, but if you know a machinist, or have some access to some mills and lathes... then make spacers and other adapters to get the drive chain aligned with the bike's primary drive.

This meant that both the bike and the track unit itself would have to be modified to make the project work, start by removing the Street Rods' swingarm, rear tire, and shocks, then fabricate a strut with quick-release hardware to connect the track unit to the bike.

Up front, remove the front wheel and fender to mount the conversion kit's ski, using the stock Street Rod axle, forks, and triple trees and you'll need to make some custom machined spacers.



https://www.rideapart.com/articles/245192/harley-davidson-hits-the-slopes-with-street-rod-snow-bikes

Tuesday, October 16, 2018

It wasn't Robert Peary's expedition that got to the North Pole first... they lied to you in history class from ignorance. The guys who actually did get there 1st, were snowmobilers from Minnesota!


History books are full of bullshit, such as Columbus reaching America - he never touched foot on any of the United States lands. Vikings landed on Canada hundreds of years earlier.

And the old story about Peary being first to the North Pole, as he claimed to have reached the Pole on April 6, 1909, is easily understood as flawed as it included no one who was trained in navigation and could independently confirm his own navigational work.

Peary was long anointed the discoverer of the North Pole—until 1988, when a re-examination of his records commissioned by the National Geographic Society, a major sponsor of his expeditions, concluded that Peary’s evidence never proved his claim and revealed that he knew he might have fallen short.

No, set aside all the grandstanding megalomaniac wanna be "Admirals of the Sea" and such nonsense that Peary, Columbus, and other names made famous in history books. It's bullshit.  You can't trust many writers to get it correct either, even a 2016 article in Popular Mechanics doesn't have the facts, and Guinness is also ignorant.


The real first confirmed surface conquest of the North Pole was that of Ralph Plaisted, Walt Pederson, Gerry Pitzl and Jean Luc Bombardier (nephew of the founder), who traveled over the ice by snowmobile after fundraising 200k for the expedition, and arrived on April 19, 1968. The United States Air Force independently confirmed their position.

Plaisted was an insurance salesman, Pitzl was a Marine veteran, geography teacher and pilot with navigation experience.


With four 16 horsepower 300cc Super Olympic Ski-Doo motor, with improved traction thanks to the insertion of iron crampons inside the tracks rubber to ensure better traction on the ice, they left Ward Hunt Island, the jump off point, in March of 1968, a year after a failed attempt which had Charles Kuralt of CBS along, and these Ski Doos were 6 hp more than the previous years models.


 It is 472 straight miles on a map... but, using a snowmobile means being subject to the conditions on the ice pack, and that results in a lot of wasted travel getting around challenges. Instead of 30 days travel, it took 40

While making their way, they tested food for NASA and the Apollo missions!



Something they don't mention in most coverage of artic expeditions, there are no showers or baths for a couple of months. The temps are too cold, and no one is going to lug enough heating fuel to heat enough ice to temps for a bath... as the outdoor temp is -25 to -70


They stayed two days at the north pole, and were air lifted back instead of wasting time traveling back over ice.



Why was the unlikely triumph of the Plai­sted expedition lost to history?

The answer is a combination egos and polar politics.

When the expedition returned to Montreal, a writer from National Geographic was waiting, hoping to acquire rights to the story. Rights.... see, that is a powerful word, rights are something you do not "give" away.

Plaisted flatly refused, despite the pleading of his comrades. Since Peary’s day, the magazine had been the official arbiter of exploration claims like theirs; with his refusal, Plaisted denied his team the legitimacy only the society could bestow.

And without "rights" to the story, the Nat Geo Society won't give free publicity to honest people that earn respect by accomplishing a feat they wrongly and without evidence handed to their chosen guy, and promoted for decades. That's the world we live in, when they can profit from it, they hand out accolades, when they can't profit, they ignore their mandate.

https://www.perfectduluthday.com/2016/04/05/hollywood-rumor-will-ferrell-will-star-film-snowmobile-adventure-hatched-drinks-duluths-pickwick/
https://geog.ucsb.edu/who-was-the-first-person-to-reach-the-north-pole/
https://www.smithsonianmag.com/history/who-discovered-the-north-pole-116633746/
http://www.amsnow.com/reviews/snowmobile-trails-travel/2012/01/syrupy-spring-snowmobiling
https://www.nytimes.com/2016/03/20/magazine/an-insurance-salesman-and-a-doctor-walk-into-a-bar-and-end-up-at-the-north-pole.html
http://www.santafenewmexican.com/news/local_news/last-of-the-ice-party-that-made-it-to-the/article_d67a1715-c671-51af-ae7f-15cef20024ec.html

Tuesday, August 16, 2016

the Allis-Chalmers M-7 Snow Tractor, it used the Jeep engine and transmission.



The tractor was motivated by the US Army Air Forces need for rescue capability in northern areas where reaching a downed crew might entail cross-country travel in snow. The M7 may be used for either highway or snow travel as the front axle can be equipped with either wheels or skis. Because of its relatively low center of gravity, the M7 tractor can easily climb steep slopes, depending on the traction available, and the load being pulled.

Info here: http://olive-drab.com/idphoto/id_photos_m7_snow.php

Year-by-year breakdown: https://en.wikipedia.org/wiki/M7_Snow_Tractor

More pics: http://mapleleafup.net/forums/showthread.php?t=5587