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Author Topic: Bi metal blades  (Read 772 times)

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Offline Crossroads

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Bi metal blades
« on: June 09, 2021, 10:22:44 PM »
Last year I switched to a local shop to grind my blades due to the extended turn around time. Iím pretty happy with the turbo 7ís, but today when I dropped off more blades. The owner gave me a 10į bi metal blade to demo. He claims that I should be able to run it about 6 hours between changes. I havenít ran it yet, so I have no idea if Iím going to like it or not. 
2017 LT40 wide, Kubota l185dt, 2-036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline 2308500

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Re: Bi metal blades
« Reply #1 on: June 10, 2021, 08:48:44 PM »
following

Offline Crossroads

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Re: Bi metal blades
« Reply #2 on: June 12, 2021, 12:47:33 AM »
I ran it today and while Iím not totally sold, I wasnít disappointed either. I got about 4 1/2 hrs out of it, which I like. It didnít seem to saw as flat as the turbo 7ís though. Twice I had to go back and clean up a wave that I really couldnít explain. When I get it ground, Iím going to ask if they can add a little more set to see if I can push it a little harder and see if it will flatten out. 
2017 LT40 wide, Kubota l185dt, 2-036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline DocGP

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Re: Bi metal blades
« Reply #3 on: June 12, 2021, 10:46:35 AM »
Still quite green here, but I do like my bimetals.  They last a good bit longer for me (although I can't quantify).  They do seem to take nail strikes better, but I did find out that 6 nails in 4" will trash them none the less!!!  

Although on a positive note, it did cut through the nails!!

Doc
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Offline Crossroads

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Re: Bi metal blades
« Reply #4 on: June 12, 2021, 07:56:14 PM »
Still quite green here, but I do like my bimetals.  They last a good bit longer for me (although I can't quantify).  They do seem to take nail strikes better, but I did find out that 6 nails in 4" will trash them none the less!!!  

Although on a positive note, it did cut through the nails!!

Doc
I could see 6 nails taking itís toll on a blade lol
2017 LT40 wide, Kubota l185dt, 2-036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline Beavertooth

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Re: Bi metal blades
« Reply #5 on: June 13, 2021, 09:40:49 PM »
I normally run Turbo 7s double hard 1 1/2 x .055 .  I bought one box of bimetal 1 1/2 x .050 as woodmizer does not offer them in a .055.  You can definitely run them 2 to 3 times longer than the double hard before becoming dull. But I can not run them as fast without getting waves because they ar thinner.  As far as the nails I have lost 4 of them to nails. I see no difference in being able to stand up to metal than the double hard.  You could cut metal with them if the blade was turning slow but of course that is not the case.   They are suppose to have a lot longer flex life than the double hard though. And I just remembered they are actually 1 5/8 even though woodmizer calls them 1 1/2.  You would think you could shove it just as hard because it is wider even though it is thinner but that is not the case. You can tell a whole lot of difference in the stiffness of them by just folding them up compared to each other. The .050 is definitely a lot more limber and it also could have something to do with the material it is made of as they do flex a lot longer before breaking.   
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Offline Crossroads

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Re: Bi metal blades
« Reply #6 on: June 13, 2021, 11:54:12 PM »
I run 1 1/4Ē blades and although I didnít measure it, the bi metal looks wider. 
2017 LT40 wide, Kubota l185dt, 2-036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline Stephen1

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Re: Bi metal blades
« Reply #7 on: June 15, 2021, 07:52:42 AM »
I run 1 1/4Ē blades and although I didnít measure it, the bi metal looks wider.
The bimetals are 1 3/8"
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Online Bruno of NH

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Re: Bi metal blades
« Reply #8 on: June 16, 2021, 05:43:12 AM »
I have run Timber wolf bi metal on my old mill they are wider as well.
I liked them but they are costly.
Lt 40 wide with 38hp gas and command controls , F350 4x4 dump and lot of contracting tools


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