Make your own impellor gauge.

[davidescu_radu]

Hi!
Best info about impellers till now from what i've searched

[geraban19]

I will try it.

[beerdart]

Expanded pitch gauge for the steeper impellers.

[beerdart]

I lasered mine on clear lexan then heated and rolled around a coffee can.

[mikeFZR]

what size clear pipe did you use ? thanks again

[mikeFZR]

Yep

Thanks for the quick reply! already got 'em printed!

[beerdart]

these work with 155 on an fzr?

Yep

[mikeFZR]

Impeller Pitch Gauge (Angles) Printable

beerdart- will these work with 155 on an fzr?

[RX951]

I use the last 2 1/2" of the blade to match the line on the gauge!

Good information to share

[2fast4u]

I think you may be reading it wrong.

When you read the trailing and leading edges you are only looking at the last 1" or so of the blades. It can be confusing and look like a totally different pitch if you look at it wrong, but it is pretty easy once you get the hang of it.

I use the last 2 1/2" of the blade to match the line on the gauge!

[w/rpm500]

take a copy of the chart on clean white paper to office max and they can print it up on clear mylar for about .75 Cents a copy..
it works well printed flat, for quick check too..

[Mike's GPR]

I think you may be reading it wrong.

When you read the trailing and leading edges you are only looking at the last 1" or so of the blades. It can be confusing and look like a totally different pitch if you look at it wrong, but it is pretty easy once you get the hang of it.

[trollfromthebyu]

If angles are angles, then why does A 17/25 solas read different than a stock 17/25 or a skat 17/25?

I believe you I just don't understand.

And, I broke down and bought the ones from watcon,OOPS!!

Anyways, how the heck do you use these things? I got a 17/25 and it's reading 14 or???? The gauge doesn't even go to 17!

Angle and pitch are not the same, ok i'm going to try and explain this the best way i can 140mm=5.51", 155mm=6.1" 1/2 of 5.51=2.755, 1/2 of 6.1=3.05 now that thats done "pi*1/2 dia*2 = circ"

3.14159*2.755*2=17.31
3.14159*3.05*2=19.16
17.31*Tangent(42deg)=15.586"pitch
19.16*TAN(42deg)=17.255"pitch

OK im use to outboards but pitch is the distance traveled in a solid per one revolution with no slip the props on a pump have two pitches one on the front side one on the trailing end. They use this to compress the fluid in the pump i think it took a some searching to find this i hope it helps it helped me a lot

[pdxrealtor]

If angles are angles, then why does A 17/25 solas read different than a stock 17/25 or a skat 17/25?

I believe you I just don't understand.

And, I broke down and bought the ones from watcon,OOPS!!

Anyways, how the heck do you use these things? I got a 17/25 and it's reading 14 or???? The gauge doesn't even go to 17!

[beerdart]

It will work with any diameter. Angle is angle.