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Reply by crank49

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Posted on A new saw stopping device!

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crank49

4032 posts in 3117 days


#1 posted 10-08-2011 09:15 PM

Saw Stop redirects energy. By grabbing and holding the edge of the spinning blade, the energy is redirected to snatching the blade below the table. It doesn’t have to stop the mass of the spinning motor either, because the arbor can still spin a little, even with the blade stopped. A brilliant idea. A patented idea. As I said before, nothing else can work like this, and nothing else will work as well.

Before the Whirlwind could stop the blade as fast as the Saw Stop it has to also stop the spinning mass of the motor. It actually uses the motor as the brake. That motor mass is huge compared to the blade. I suspect they have gotten all the stopping ability they can get without twisting the arbor off and are just waiting to see if 7 revolution of the blade will meet the requirements of the coming regulations.

Bunkie said, “you are likely to have at least have a blade revolution”. No, you are going to have 7 or 8 blade revolutions based on the numbers claimed by Whirlwind themselves..

Nobody is going to do anything until the regulation is defined. One reason other companies would not adopt the SawStop technology when it was offered to them was the liability issue. How could you sell an inexpensive jobsite saw besides a very expensive cabinet saw with a safety brake and not get sued for offering the inexpensive saw without a brake. You have already admitted the price of the brake is too expensive to include on the cheap saw. You are putting cost above safety. If you redesigned the jobsite saw to have a SawStop brake module it might have to sell for $1000. Then you just put yourself out of the market for job site saws where you would have to compete with $100 saws.

No. The regulation has to come first. Then engineers and marketers and lawyers will have to do their thing before the free market can iron it all out.


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