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josjay


Joined: Feb 22, 2011
Points: 19

what size pulleys
Original Message   Feb 23, 2011 4:18 pm
what size pulley should iput on 305cc engine there is a 51/2'' pulley on blower .it is a 36' cut blower for a lawn mower but i am modifying to go on atv .its a single stage so i want to get most power i can out of it.any help would be appreciated thanks..
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josjay


Joined: Feb 22, 2011
Points: 19

Re: what size pulleys
Reply #22   Mar 7, 2011 6:46 pm
got a 4'' pulley today could not find a 4 1/4 will try this one soon as i get time will let know how it works. thanks alot for info i understand how a pulley system works alot better now.bill h i seen your pic it throws snow good what is a clarence kit.
Bill_H


Location: Maine
Joined: Jan 12, 2008
Points: 354

Re: what size pulleys
Reply #23   Mar 7, 2011 7:34 pm
Just search here for 'clarence impeller kit'. You'll only need two pieces for your paddles. If you can adjust your auger within 1/8" or 3/16" of the housing you may not have to.

Who the hell let all the morning people run things?
josjay


Joined: Feb 22, 2011
Points: 19

Re: what size pulleys
Reply #24   Mar 11, 2011 6:40 pm
ok i tried the 4' pulley today it did not work very well it would stall engine very easily.then tried a 3 1/4' but not work as good as a3 1/2. so i guess the 31/2 is the best im going to get work not bad throw snow 10 feet  would like to get further but dont know what else to do also was very wet snow chute plugging up.
borat


Joined: Nov 10, 2007
Points: 2692

Re: what size pulleys
Reply #25   Mar 11, 2011 7:12 pm
Put a big Vangard V-twin on it.  The additional power will allow a lot of pulley size flexibility.
jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

Re: what size pulleys
Reply #26   Mar 11, 2011 11:55 pm
Not surprised the engine didn't have enough to drive a 4" pulley and turn a 36" blower.  That's asking a lot of a 10hp engine.  Your probably going to need something like a 16hp to really get things going.
Or as borat suggested the Vangard V-twin would certainly give you what you need.
josjay


Joined: Feb 22, 2011
Points: 19

Re: what size pulleys
Reply #27   Mar 12, 2011 11:18 am
would bigger pulley on bottom make any difference or would i be wasting my time.
jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

Re: what size pulleys
Reply #28   Mar 12, 2011 11:28 pm
A bigger pulley on the bottom (driven pulley) would help some with the engine bogging down problem.  But using a larger "driven" pulley is going to drop the RPM of the shaft.  So the auger
RPM will be dropping as well.  Your throwing distance will suffer.  The Blower width, auger RPM, pulley/sprocket combination and engine size are all engineered to work together. If you drop the HP
that the system was designed to be used with.  There really is nothing you can do to get around the lack of power.  You can always increase the power/HP driving a designed system and improve the
blower performance.  But you can't go the other way and offset a lack of engine power by changing the gearing so to speak. 

Bill H has a 48" blower on his tractor which I know is 12" wider than yours.   But he also has a 20hp engine.  That's twice the size of yours, roughly.  I'm afraid you only real option is to get a larger engine.
A 16hp would probably do it.  And as was suggested reducing the clearance between the throwing portion of the auger and the housing is also important. 
If you want to get the maximum performance out of the blower.
ralphfr


Location: Long Island, NY
Joined: Jan 22, 2011
Points: 40

Re: what size pulleys
Reply #29   Mar 13, 2011 10:22 am
As a single stage blower owner and being extremely jealous of all of you knowledgeable 2 stage owners I read all of these threads with great interest. I was thinking about the issue of impeller and auger housing clearance and thought about the possibility of using something like a roll-on truck bed liner like dupli-color bed armor or something similar. Enough coats would probably help with the auger clearance while protecting the housing at the same time. Good idea or bad?
jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

Re: what size pulleys
Reply #30   Mar 13, 2011 11:50 am
I wouldn't think that the bed liner material would be a good idea.  Although it would be durable.  You need a smooth surface for the snow to travel over. The smoother and slicker the better.  Most bed liner material is textured. It's designed to produce somewhat of an anti skid surface. 

Just to clarify, it isn't really about auger clearance.  On a single stage tractor type blower.  The clearance issue is limited to the two or so blades in the center of the augers. That actually catch and throw the snow up the chute. The augers to the left and right of the center blades/paddles simply move the snow to the center for discharge.

On a two stage blower.  It's the impeller blade to housing clearance is the important issue. 
josjay


Joined: Feb 22, 2011
Points: 19

Re: what size pulleys
Reply #31   Mar 13, 2011 1:12 pm
thanks for all the info iguess ineed more hp.just wonderin would a 2 stage blower work better or would it be the same as a single stage.
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