My home made humble saw mill

[DanG]

I would like to interject something here, if I may.  For quite some time now, this forum has been international in scope, and a number of our members do not have English as their native language.  I think it would be a nice gesture if we would take that under consideration when replying to their comments.  I can only imagine the difficulty they must encounter when trying to read some of the answers, even though it is quite plain to most of us.  It would be good if we could avoid using slang terms, or too many contractions when interacting with them, and to watch our spelling and punctuation as well.  I'm sure that many are using on-line translators and conversion dictionaries to translate, and improper use of English just makes it more difficult.  Above all else, this forum is a place of learning, and we learn much from our members in foreign lands. I think we will learn even more if we make it easier for them to communicate.

[Tom]

You have a good project there, Alsayyed.  The blade speed you will be attempting to reach is about 65 mph, or 100kph.  It translates to 5,000-5,200 feet per minute.  To get consistancy, you need to consider the torque provided as well.  If you are using automotive tires, the weight will help to store a lot of energy, but you need enough horse-power to bring it back to speed again.  The drops in speed are usually small, like hitting a knot or getting into a tough piece of the wood. Horsepower and weight (flywheel action) of the band wheels help the governor to keep the speed steady.

I'm amazed at your progress from the first post, when you were having trouble with the chainsaw.  DanG is right. Shaking your hand would be a pleasure and an honor. 

[Old Hilly]

I too would like to congratulate Alsayyed on his progress with his mill. I would also like to thank him for solving one of my problems in my mill design. That blade tension idea is a beauty and solves one of my problems, so thank you very much Alsayyed, with your idea I am a step closer to finishing my designs.
Good luck with your sawmilling.
Dennis.
PS. Those Acacia and Eucalypts are going to be, as we say down here in Australia, "as hard as the hobs of hell". Our big circular sawmills always run lots of water over the saw as they cut the log and prefer to cut the logs "green" rather than dry. Changing a 60 inch sawblade on a "canadian" main/breaking-down bench takes a while so they use water to keep the blade cool and clear of pitch and sap.