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tellushow

Scratches on New Acme Prop, Typical?

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tellushow

Opened brand new Acme 525 prop and discovered grinding-type scratches on backside of one blade. It is a nearly perfect rectangle measuring 2" x 3".

Anyone else see this kind of thing on their Acme prop?

No trouble exchanging, but wondering if this is typical and the next one will have similar thing.

See photo: https://docs.google....LU9LVGN2N3pjME0

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my malibu

That is from it being balanced . Normal

Edited by my malibu

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Bobby Light

That is from it being balanced . Normal

+1

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tellushow

Your replies were very helpful. Thanks.

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REW

I would still call ACME and ask. The CNC milling is supposed to make the ballance perfect from the start. Not have to be hand ballanced by a tech.

I am not saying that this is not normal but I would want to hear there explanation.

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Jimmypooh

Normal, that side of the blade is only there to hold the other side on.

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JB-FOOT

the CNC process makes the pitch and diameter perfect EVERY time.....and every now and then, I little balancing is needed.....that is just ACME being ACME.....with their perfect attention to detail to make you have the PERFECT prop.....

you can relax, but I can understand your questions as well...

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jkendallmsce

I would still call ACME and ask. The CNC milling is supposed to make the ballance perfect from the start. Not have to be hand ballanced by a tech.

I am not saying that this is not normal but I would want to hear there explanation.

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jkendallmsce

I would still call ACME and ask. The CNC milling is supposed to make the ballance perfect from the start. Not have to be hand ballanced by a tech.

I am not saying that this is not normal but I would want to hear there explanation.

The wheels on your car and supposedly balanced, but ya gotta ad weights to balance them. Even after being milled/machined, when you spin something at 3000+ rpms, it don't take much to make it wobble.

You sometimes have to add a few to several ounces to a 30 pound SUV/truck wheel to balance it.

Besides, the front side of the prop and the trailling edge is what your are buying and what gets your from point a to point b.

Edited by jkendallmsce

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Slayer

I agree.....100% normal. You're going to love that prop!!

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cbmalibu98

Mine had the same balancing marks, and that was 5 years ago and still going strong. Nothing to be concerned about.

CB

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jkendallmsce

Normal, that side of the blade is only there to hold the other side on.

good explanation

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Sixball

Normal, that side of the blade is only there to hold the other side on.

:rofl:;)

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Nitrousbird

My brand new 1939 showed up yesterday - same marks on the back of two blades. Pretty evident it was done on purpose.

Damn good looking prop I might add!

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