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Greg,
All you need to know from Berco is the diameter of the driven pulley they use on blowers slated for the Ingersoll tractors. Any one of the guys on here that own a 4 digit tractor can tell you the diameter of the pulley on their electric clutch. The rest is just ratio math to determine projected RPM when the engine is actually spinning at 3600 RPM.

If both pulleys have identical RPM's, then the fan on the Berco is spinning at 3600 RPM. If the pulley on the tractor is 20% smaller than the one on the blower, then multiply 3600 x 80%. Every 2 stage that I've seen so far, has the impeller spinning at the same speed as the shaft the driven pulley is secured to. The gear box then reduces speed to the auger.
 

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Greg said:
I have looked and looked and does anyone know what RPMs the main drive pulley turns. I haver an idea but wont share until I find the info on RPMS...

Thanks

Greg
Hi Greg

I've been commenting on Berco's on various sites based on my Berco Nor-Eastern 44" . I've used this for 2 seasons and enjoy it. :thumbsup:

It was just last night that I saw the drawings on the Berco Deluxe, Thanks to a new member.

They are totally different machines so I suspect my numbers would be of little use to you. If you want the readings from my Berco I'll check them out for you.

I'm interested in finding out the RPM'S of the 2nd stage impeller on Jim's machine in the video :headscratcher:

As for the gravel driveway ? Now the stones I pick up go on my neighbors lawn down the street. :sidelaugh: :sidelaugh: :sidelaugh:

Stewart
 

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Greg said:
This is the info I recd from Bercomac, they have been a lot of help.
Greg

When the tractor motor has a apprx.6'' pulley it is 1:1 so 3600RPM
Greg

This reminds me of the E-mails I had from Berco 2 Years ago. :headscratcher:

Whats the importance of the 6" Tractor Pulley without knowing the RPM of the Pulley ?

Is the Pulley on the Blower a 6" ?

The pulley on my 224-79 is 4 7/8".

I don't see the second stage Impeller being balanced enough to run long at 3600 RPM.

I'll Tach my Nor-Eastern in the next few days .

Thanks for searching this project, Maybe I won't have to run mine on a Hyd Motor.

Stewart
 

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Stewart said:
Greg said:
This is the info I recd from Bercomac, they have been a lot of help.
Greg

When the tractor motor has a apprx.6'' pulley it is 1:1 so 3600RPM
Greg

This reminds me of the E-mails I had from Berco 2 Years ago. :headscratcher:

Whats the importance of the 6" Tractor Pulley without knowing the RPM of the Pulley ?

Is the Pulley on the Blower a 6" ?

Yes... they told him that when they disclosed that the ratio would be 1 to 1 IF the tractor pulley was six inch.

The pulley on my 224-79 is 4 7/8".

I don't see the second stage Impeller being balanced enough to run long at 3600 RPM.

I'll Tach my Nor-Eastern in the next few days .

Thanks for searching this project, Maybe I won't have to run mine on a Hyd Motor.

Stewart
Assuming that Greg's tractor also has a 5 inch pulley, he would be under-speeding the Berco blower. If I was him, I'd just leave it all alone and see how far it tossed snow. If it threw it far enough for his purposes, then why bother changing the Berco pulley to five inches? Under-speeding makes his engine more powerful. It's similar to being in 5th gear on a 6 speed transmission. You may not be able to travel as fast but hills won't slow you down.

Again, the type of snow Greg encounters routinely will affect his decision but swapping out a pulley along with a new belt isn't a big deal.
 
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