Blade Failure in Jensen

[Johny Walker]

Yeah its imprinted on my mind for all eternity after hearing the sound of metal chunks clanging out the chipper shoot.... laburnum 5" diameter

my old ph25/t/w thru a blade straite out no damage never found it

[Stephen Blair]

my old ph25/t/w thru a blade straite out no damage never found it

 

it is terrifing when you see young lads jumping infront of the chipper for a laugh on utube:scared1:

[bob]

i once had a blade break on me but i suppose it was understandable

13mm reed bar is harder than wood

[Rob75]

I have seen blades bent (after a ratchet strap found its way through). Yes the front edge was damaged but no shattering. This shows a good level of hardening & tempering. Blades were Original TW. Most important thing (pattern or original) to remember is the keep them sharp as this reduces the loading on the blade & associated parts

[Log-ologist]

I use both genuine and copy blades, though 90% of the time ive gone with saturn blades due to cost. The only blade ive had fail in 6 yrs, was this timberwolf one.

 

that was a well worn blade. note the score line for wear limit. I throw mine away well before they are that bad.

 

could it be that older blades at the end of their working lives are most likely to fail.

[john@arbtech]

If your blades get down to 60mm or less they can get 'jacked' off the flywheel. Also we went through a spell of using pattern blades and the same used to happen.

Edited June 11, 2009 by Steve Bullman

[White Noise]

I use both genuine and copy blades, though 90% of the time ive gone with saturn blades due to cost. The only blade ive had fail in 6 yrs, was this timberwolf one.

 

No disrespect but the blade looks knackered even before it broke .

[skyhuck]

No disrespect but the blade looks knackered even before it broke .

 

Err...........look at the picture, its not reached the end of life line on the blade, so whats the problem?

[john@arbtech]

The times we have had problems with pattern blades, we were still contractors and trying to save money! It does'nt pay to cut corners!!!

[treediver]

No disrespect but the blade looks knackered even before it broke .

 

Yeah i always make sure i run knacked blades... especially ones which which look like they might disintegrate on impact

 

Seriously though , those blades seemed ok prior to destruction.