Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Intake shoot question.

I’ve noticed that on some snowblowers the bottom of the intake shoot swoops under the augers and about even with the forward edge of the augers. On other machines the bottom of the intake shoot is in back of the center of the augers.

The forward edge machine requires that the augers be higher, about an inch or inch and half above the scraper bar.
For the machine with the scraper bar in back the augers were lower.

It seems the forward scraper would be clearing to the ground by scraping with the scraper bar. The lower auger unit would be clearing to the ground by the augers.
What’s the difference in design for? Would these designs have a difference on gravel and tar driveways?
David