As many of you know me know that my main necessity for a garden tractor is its snow removal ability. I decided that this year I was going to re-power our old Sears Suburban. I chose an engine with a little more torque and HP then the original and now I am wondering if by going up on the drive pulley 1/4 inch if will help the blower speed with out robbing all the extra power it has. I think I will be ok because this is a hydro tractor and even with the original set up it didn't bog must just didn't throw as far as I would like.
I have never played with ratios on tractors although I understand the concept very well. I feel that a 1/4 may not be enough to really tell the difference and maybe I should try 1/2, however I have changed gear ratios in motorcycles before and one tooth on the drive sprocket makes a HUGE difference.
Sprockets are 20.00 or so and its not the end of the world if I have to buy two before I get it right, but would like to hear from others that have swapped out pulleys before to change ratios before I decide to just go up a 1/4 inch and then maybe another 1/4 inch.
I am asking if you think a 1/4 inch is to little or is 1/2 to much. Or does 1/2 increase sound like a good starting point.
This is the hydro tractor so I am not concerned with matching the drive speed with the blower and because its the hydro is why I am even thinking of this. I know with my manual wheel horse there are more factors to deal with Re: gear selection , snow depth, weight , etc. I find that at times with the horse 1st gear is to slow and then 2nd is to fast of coarse that depends on the type of snow, but those are issues we only have with the manual drives.
BTW yes I know its a bit early to be doing anything snow related but I don't want to wait till it gets here to get it figured out.
Photo for entertainment value.