Snow Attachments looking for answers...lol

[railbike4]

I found a MTD 40" single stage snow blower that i am in the process of mounting to my toro groundsmaster 52 front deck tractor...I found an old gravely 90 gear box.the problem is i can't find any info.on what is the optimum auger speed for the snow blower auger. i could do it the easy way and build it then change out sprockets to find the right gearing or the hard way with a formula that was as long as my arm.(what i have been doing for the last 2 days to no avail.) or just ask if someone might know what the final drive speed is on my mtd snow blower. auger diam.is 20",auger pitch is 6" ,twin fluted . any advice is appreciated. i have watched every u tube video trying to get an idea of auger speed...

 

[dave1949]

Frontier 3pt snowblowers use a 15" dia. auger speed of 170 rpm, 24" dia. impeller is 540 rpm, and 540 rpm coming from the tractor pto.

I looked online at Toro and Honda blowers and couldn't find any specs for rpms.

 

[railbike4]

thank you Dave for hunting up the data. it sounds like the one u are describing is a 2 stage blower ,sadly mine is a single stage with auger and thrower on the same shaft. from looking at my dads john deere single stage snow blower it seems in the 800 -1200 rpm range ,but it has been awhile since i seen it run. the mtd augers are not solid and twin fluted which should change rpm even more.lol back to the drawing board...

 

[dave1949]

thank you Dave for hunting up the data. it sounds like the one u are describing is a 2 stage blower ,sadly mine is a single stage with auger and thrower on the same shaft. from looking at my dads john deere single stage snow blower it seems in the 800 -1200 rpm range ,but it has been awhile since i seen it run. the mtd augers are not solid and twin fluted which should change rpm even more.lol back to the drawing board...

Oh, I assumed two stage. Sorry. I thought maybe the auger and impeller rpms would be roughly in the same proportion for most (2-stage) blowers.

 

[railbike4]

i have been looking thru old threads trying to find anything to help out.nothing yet lol

 

[dave1949]

http://www.mtdproducts.com/equipmen...lView?storeId=10500&catalogId=20500&langId=-1


Have you tried the MTD web site? They have owner's manuals online if you know the model# (from the tag on the blower).

Who knows if the auger rpm is in the manual, but it's worth a try.

 

[railbike4]

all my luck.no manual is shown. i bet mtd will not release any info. pertaining to operating limits. they are kinda tight lipped on things like that.lol

 

[railbike4]

got the rest of mounts made for the snow blower. went real well..now all i need is operating rpm for a Mtd 40" single stage snow blower.anybody have one of theses and a laser tach....lol

 

[railbike4]

well i guessed the auger speed from the info i could find.came up with a speed i hope will work. 952 rpm on 20" auger . at 3600 ( full throttle) on tractor. i hope it works. ooh by the way anybody come up a neat way to turn spout I'm all ears...