Chim, I have some questions for you, if you don't mind.
Is that a Kubota blower and if so, which model?
Did you have to go slower with the wings added?
I'm wondering if the blower could process the extra volume at the same travel speed or not?
Also how much width did you add?
A little history here;
Last year I converted my old snow blower so it could be used on the 3PTH or on the loader, using a homemade hydraulic power pack. I was tired of looking backwards for hours at at time. What I discovered in the process was that with the blower running at higher RPM, it would throw the snow a LOT further but I had to go a little slower due to the loss of hp going from direct mechanical PTO drive to hydraulic drive. It was nice to drive forwards but it was a bit of a PITA to get all the hydraulic lines installed from the back to the front of the tractor. This was all done on my previous open station 47 hp Massey. I now have a Kubota 60hp tractor with a cab and the tires on this tractor are wider. I'm thinking that with the extra hp and using cab mirrors, I will be able to back down the driveway faster, if I got a better blower. The old blower (which I still have) is 74" wide, has a 15" auger and a 21" diameter 4 blade fan that is 7" deep. I've done a bunch of calculations and based on those calculations I can see that a larger diameter fan will throw the snow further and throw more of it. If that fan is a larger diameter and is deeper then it will throw even more snow. That is why I'm leaning towards the Kubota over the Farm King. They both have the same diameter fans and augers but the Kubota fan is 2" deeper. Therefore the Kubota blower will process about 30% more snow than the Farm King, which means I can travel at a higher speed. The Kubota will process 55% more snow than my current blower, which will drastically cut down on blower time. So if I upgrade I might as well get something that will process snow as fast as possible, without breaking the bank. In western Canada there is very little selection of blowers and most are the lower end ones due to the shipping costs to get the higher end blowers shipped across the country. Even the lower end units I am looking at run from $4,000 to $5,000 CAD.
My situation is that I have a very long, (1.5 km) steep driveway that is cut into the side of a mountain. Ditches and high banks on one side and a long steep drop on the other side. My method of snow moving is to use an 8' plow on the front of the tractor and plow the snow to the sides, as far as possible, until the banks get built up so much that the driveway gets too narrow. Then I use the blower to get rid of the excess. Some years I don't even need the blower and then others I need to blow several times. However after the first blower use there are vertical banks on both sides of the driveway so there is not much storage available before the blower must be used again. It would be a great setup to have the plow on the front and the blower on the back, if I can use the mirrors for backing up and not have to look over my shoulders. However if that doesn't work I may just go back to using the old blower on the front, with the hydraulic power pack. There would be no point in getting a blower that can process more snow if I don't have the power to drive it.