the snowmobile thread

[Bob_Skurka]

Hi Bob,

Are you sure about that 90 degree grade in reverse? That is straight up.

Well I just took that right off an original sales brochure.

But I have seen a photo of one climbing a slope on the side of a mountain that I would have been afraid to ski down.

I've never tried to climb backwards, but I have some steet spots along a river bank that I've had absolutely no problem climbing by driving straight up the banks.

 

[scott_vt]

Hi Bob,

Are you sure about that 90 degree grade in reverse? That is straight up.

Hey Bob,
I wondered about that too ! They probablly meant 88 or 89 degs, right ?

 

[Bob_Skurka]

It says "90 degree grade" on the brochure. I don't know how to interpret that other than to simply repeat it. Is it possible that grade and angle are two different things and that a 90 degree grade is not the same as a 90 degree angle?

 

[JimR]

I think it may climb a 90 degree wall and rest on its nose. But I doubt very much that it can go up it. It is just not possible. The law of physics wouldn't allow it.

 

[Bob_Skurka]

OK I went to Wikipedia and looked up slope. It says a 45 degree slope is 100%. So now I am more confused. But as I said, I just posted the claimed numbers. I still suspect that there is a difference between grade, slope, angle, etc in the terms being applied.

All that said, the Snow Trac is a blast to drive, no matter what it is capable of climbing in reverse?

 

[Jstpssng]

OK I went to Wikipedia and looked up slope. It says a 45 degree slope is 100%. So now I am more confused. But as I said, I just posted the claimed numbers. I still suspect that there is a difference between grade, slope, angle, etc in the terms being applied.

All that said, the Snow Trac is a blast to drive, no matter what it is capable of climbing in reverse?

A 100% slope is 1 foot vertical, 1 foot horizontal; or 45 degrees.

If it was a roof it would be called a 12/12 pitch; 12 over 12 is 1.0, or 100%.

66.6667 degrees is 2 feet up, 1 foot over; 2/1 = 2.0 or 200% slope

 

[JimR]

OK I went to Wikipedia and looked up slope. It says a 45 degree slope is 100%. So now I am more confused. But as I said, I just posted the claimed numbers. I still suspect that there is a difference between grade, slope, angle, etc in the terms being applied.

All that said, the Snow Trac is a blast to drive, no matter what it is capable of climbing in reverse?

Ok, so your machine can climb a 40.5 degree in reverse and a 31.5 degree slope going forward. That is still pretty awesome. I'm sure there must be a safety factor in there also. I would think somewhere between 10-20%. If you added in the 20% it would be another 9 degrees on both. Now that is some serious climbing. That would be almost 50 degrees in reverse and 40.5 in forward.

 

[DK35vince]

Finally getting some snow here also..
I forget just how fast these sleds are since its been a while since I've ridin it..

 

[JimR]

Finally getting some snow here also..
I forget just how fast these sleds are since its been a while since I've ridin it..

I think we are getting that storm on thursday. How much snow did you get?

 

[Bob_Skurka]

Vince that blue one on the right looks like it is faster than the orange one on the left! Both look like a lot of fun in the snow

I'm heading outside in a little while to go for night drive in the farm fields.