Tachometer reading. Advice needed

[Hunter]

I have test few of my new saws today and non of them apart from Makita came as per factory specification.

I am particularly concern about my new husky 395 as this will be used for milling.

here are pictures for maximum RPM.

New husky 395 max RPM 12000 instead of recommended 9600. 

idel is also high at 3000 instead of 2500.

 

new husky 135 maximum RPM 11800 instead of recommended 9000.

 

Makita DCS 5121 maximum 13000

which is fine as per factory specifications.

 

 

 

 

[Rough Hewn]

9000 rpm is slow.
Really, really slow.
12k sounds about right.
If a bit slow.
661=13.5k rpm
880=12.5krpm
Without loads.
Are your rpm guides the speed in the cut?
Or the speed without load?

[Daniël Bos]

The 9k rpm is where it has Max power, not max rpm.
Max rpm for the 395 is 12500 iirc

[Hunter]

46 minutes ago, Rough Hewn said:

9000 rpm is slow.
Really, really slow.
12k sounds about right.
If a bit slow.
661=13.5k rpm
880=12.5krpm
Without loads.
Are your rpm guides the speed in the cut?
Or the speed without load?

All speed without any load.

tried husky 135 with load and it is 9000.

[Hunter]

17 minutes ago, Daniël Bos said:

The 9k rpm is where it has Max power, not max rpm.
Max rpm for the 395 is 12500 iirc

Thanks. So I am fine then

[Rough Hewn]

[emoji106]

[Daniël Bos]

Thanks. So I am fine then

Dunno about that...[emoji14]
But yr saws are well within specs[emoji106]

[Hunter]

Thanks mate

[spudulike]

Just tach around 1,000rpm lower than the max factory recommended and all will be about where it should be. Tach with the bar usually used on the saw. As said earlier - the figures you were using was where maximum power is developed and not maximum revs under no load.

[Hunter]

2 hours ago, spudulike said:

Just tach around 1,000rpm lower than the max factory recommended and all will be about where it should be. Tach with the bar usually used on the saw. As said earlier - the figures you were using was where maximum power is developed and not maximum revs under no load.

Thank you very much for advice.