26sonic

How can you tell if a prop is labbed from merc. ? does it have a certain finish or stamped marking and were is it located ?

throttleup

There should be a stamping on the top of the hub housing, on the aft end were the prop nut is installed.

Julie

bbladesprops

The stampings are the ultimate way to tell. The stampings are also a code. Trained eyes can also tell simply by the finish. However, Merc originally Labbed doesn't mean currently Merc spec.

By the way, the stampings are done by hand, not cast in and vary in information and quantity

26sonic

what do the stampings look like ?

throttleup

A series of numbers and letters hand stamped on top of the hub housing!

Julie

26sonic

I bought a brand new 28p merc labbed prop and a demo , should both of these be labbed the same or does merc change their specs every so often ? just wanted to be sure I have a matching pair.

26sonic

the demo was a new prop taken out of the box by the dealer for someone to try.

bbladesprops

Merc Demo props are blue.

There is a standard Lad recipe developed for Bravo 1 props back in the 1994 ish time frame. Standard templates are still used and modified. If you order a Labbed propeller from your Mecury dealer, you will get the standard Lab. Otherwise you need to contact a facility like BBLADES to obtain custom specs.

Are there stampings on the propellers?

26sonic

yes there are stampings on the props .

bbladesprops

Let us know what you see.