This conversation has been merged. Please reference the main conversation: Self Propelled Snow Blower
Keeping the lighter weight and smaller size of a single-stage blower would be great if possible. Maybe these adjustments would work. I would be fun to try.
- make the auger height adjustable
Keep it high to preserve battery when self-propel not needed (lighter snow, flatter surface). Lower it near surface when self-propel needed. Maybe the auger doesn't need to exactly contact the surface to do some propelling. Keep the scraper to clean the surface.
Gas single stage blowers with auger contacting pavement tend to vibrate a lot. With adjustability, the user can choose the best setting for the conditions.
- eliminate frontal surfaces inside and outside the auger cavity that push snow
The frontal areas inside the cavity like at the lights and below, plus the auger bearing bulges, might be pushing snow which will resist forward motion. Two-stage blowers usually have a curved cavity with no frontal surfaces, so the cavity doesn't push snow unless the snow gets to the back of the cavity.
The drive side of the cavity has a belt and sprockets that make frontal space. Thin-as-possible dimensions on these could help? Putting this frontal space inside the cavity but after the auger has broken up the snow would help, but I'm not seeing a way to do that. Driving the auger from the middle instead of the side would eliminate this issue, maybe driving from the top of the cavity so something is not in the path of snow going into the chute. I don't know if you can drive this way as efficiently as belt-and-sprocket.
- The combination of these and other's ideas might might do the job: a V-shaped scraper to avoid jolts from surface joints, scraper redesign to prevent it from digging in and resisting in stiff snow conditions, and something (shoes?) to set scraper height.