Sherman ARV at Camp Borden??

[Clint Tauber]

Originally Posted by maple_leaf_eh

I have few exact construction details. The literature for a Madill 171 lists the base vehicle as an M4A3, another clearly indicates M32 for a Madill 071. Another user, Finning which made pneumatic rock drills uses the base vehicle in the model designator, ie. Finning M32F Hammer Drill.

Primary reason for the M-32 carrier designation was to avoid confusion with the first tank drills, which used M-4 high speed tractors. The larger Madill and Tyee yarders used a carrier designated the "M4A3", which was a Dr. Frankenstein thing closer to an M40 SP gun. Widened and lengthened hull, and carrying 60 tons of machine. Several of the so-called "M-32" drills were likely built from Grizzlies and Sextons, had the CDP track. Horrible stuff, most got replaced within a year or two with US pattern track. The last tank drills were "M-40F's" and are not an M-40 at all, they are a typical HVSS Sherman with standard length hull.

Lots of the earliest steel spar yarders were mounted on M-6 HS tractors, converted to varying degrees. Some still retained the original cab. The first tank drill was simply an M4 HS tractor with a compressor on the back and a drill attached to the front. Still had the Waukesha gas engine, even. Later versions were highly modified, with air control for steering, diesel power, etc. Also 10 speed transmissions added.

[maple_leaf_eh]

Thank you for the specifics. Learn something new every day.

[Clint Tauber]

Originally Posted by maple_leaf_eh

Thank you for the specifics. Learn something new every day.

Here are some drills, WW2 equipment still earning its keep. The Tank Drill was first built by G.M. Philpott, later bought by Finning. Several companies built copies. Chapman built a "Drilmobile" based on the M5 HS tractor, Traxxon made one out of all kinds of components.

[jdmcm]

The two vehicles pictured on the left sport M4 High Speed tractor running gear, not M4 Sherman

[Clint Tauber]

Originally Posted by jdmcm

The two vehicles pictured on the left sport M4 High Speed tractor running gear, not M4 Sherman

Actually M4A1 with extended end connectors on both sides. That is my point, Finning already had an M4, so when they upgraded to Sherman running gear, they couldn't call it an M4, so it became an "M-32"

[Robin Craig]

JDMCM I am having trouble getting emails to you.

I need to speak or email urgently on an issue that is of advantage to you

[maple_leaf_eh]

And just to stir the naming convention pot, att is a photo of a yellow Finning tank drill's HVSS suspension which I labelled as M32F from the source.