Help me out here??

[holzwurm]

Trying to calculate the size band saw blade for my 9" band saw. Diameter of the wheel is 9" and the distance between centers is 15". I know part of the formula is pi x r squared but coming up with impossible numbers. I calculated it once and came up with a 62" blade which is waaay to big. Been a long time from arithmetic class.

 

[hawkeye2]

The twice distance between centers plus the circumference of one wheel. Pi times the diameter of one wheel is the circumference. I get 58.26 inches for the blade. You can verify by using a piece of string around the wheels like it was a blade and measuring that or use a tailor's tape and read direct. The foregoing assumes you have 2 wheels of the same diameter and not a 3rd. wheel.

 

[Robby]

Get that tape measure your wife uses for sewing and do a wrap around.
Robby

 

[holzwurm]

yep!!!! when you use the right numbers things get real. Thank you

 

[rafterob]

Yep, Pi x r squared is the area of the circle.

 

[longcruise]

Look up the manufacturers information.

 

[holzwurm]

Look up the manufacturers information.

Tried that m'friend. There is a derth of information about a 20+ year old tool no longer made. But, thanks for the thought

 

[longcruise]

I had the same problem with a saw from Ace hadware that was close to 30 years old. Employees in Ace told me they had never heard of it. So, I researched similar saws and found a company that sold a very similar one and gave them a call. A nice lady told me they sold a saw that was made by the same company that made mine.

I was not looking for a blade but rather the rubber "tires" that go around the pulleys. She had them.

However, the mention above of measuring with a taylors type cloth tape would work. Measure about Midway between the longest and shortest distance around and that should do it.

There are many blade vendors on the net. I've found that they offer a higher quality than most big box and woodworking stores.

 

[doubleset]

A good source of help and knowledge is Klingspor. Give one of their stores a call if you can't figure it out or find the blade you need. They have tires too. You'll find it interesting to install a new set. There are tricks to it. Search for that online and you'll find threads on it. Oh ... and also be sure you know how to align your saw wheels so the blade rides correctly on the wheels/tires. You can spend an amusing time doing that as well. And of course, blade tensioning is also a topic of intense interest. It's important.

When I'm serious about a blade, I use Timberwolf. But often I abuse my band saw blades by sawing all kinds of crap with them. So I will frequently get junk blades from Amazon or Harbor Freight and just beat them up -- at least on my little 12" Hitachi band saw. The 17" Grizzly with the 5 HP motor gets good blades.

 

[Pete G]

Yep, Pi x r squared is the area of the circle.

Pi are round; cornbread are square.

 

[doubleset]

Pi are round; cornbread are square.

But hushpuppies are round(ish). So I guess some cornbread is round. But there's something really disturbing about a square pi(e) -- unless you count cobbler as a pi(e).