The key to Walter's success as 100% traction lies in the torque proportioning bevel drive. This differential seeks the wheel with the most traction, opposite of standard automotive differentials. This is accomplished without the use of clutches . Another key is the fact that there is a third bevel drive built into the transmission that directs power front to rear. With this setup, there is no need for a transfer case. The trucks drive like a conventional single axle until the drive tire loses traction and the bevel drives kick in. I experimented with the ACRS and blocked the rear axle and one side of the front with the tires off the ground. Without hesitation, the truck drove off all three blocks with only the one front tire. This drive was developed after WW1 and remained basically unchanged thru the end of production. This style differential is now marketed as a high performance unit under the Quaife name.



This is a "picture" of the "painting" of my ACRS. My friend Albrecht commissioned this original, oil on canvas painting and gave it to me in 2002. It measures 18"X24" and is proudly displayed in our sun room.


I've added a couple of attachments from a letter from the Walter factory. It explains the reasoning behind the model numbers for the Walter trucks. Remember too, the first two digits of a truck serial number indicate the year of manufacture. Examples are in the truck register page with my two pieces.

Check out the schematic of the Walter 12 speed conversion on the rotary plow page






Below is a Town of Watertown NCBS from a Walter ad.




There is a lot of model information in the two scans by sullb listed below in attachments. These give a full explanation of the model numbers and what the represent. Click once on the scan to get a readable version. Thanks sullb for the info!

Stumbled on to this on Google videos. Not great quality but good action footage. The header indicates "Walter Snow Plow" and "1993 Town of Root Blizzard"

Walter - 1993 Town of Root Blizzard

DavCut

Here's that picture of twoWalter trucks at an airfield in New York.