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A little help please

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Old 05-21-2012, 08:04 PM
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Default A little help please

Brett (or anyone else),
Can you tell me anything about these props based on the markings?
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A little help please-17-x-31l.jpg   A little help please-17-x-31r.jpg  
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Old 05-21-2012, 08:32 PM
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9SLMML is what the blurry one says on it.
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Old 05-21-2012, 10:32 PM
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Looks like one of them is F'd up, and I'd say there ssm big shaft props, 17x31.

Sorry couldnt be of more help bro! lol
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Old 05-22-2012, 02:01 PM
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Quote:
Originally Posted by MILD THUNDER View Post
Looks like one of them is F'd up, and I'd say there ssm big shaft props, 17x31.

Sorry couldnt be of more help bro! lol
LMAO. They are both good, just got them and was wondering if Brett could translate the markings for me.
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Old 05-22-2012, 08:23 PM
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They have letters and numbers stamped on them
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Old 05-23-2012, 10:32 AM
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Hey Old School, I hope all is well for you!

Both props were built by a technician that worked for me at Mercury Racing in the 1990's.

The LH was built in May of 1997 to a standard Lab (at that time spec.)
The RH was built inJan. of 1999 to a standard Lab (at that time spec.)

Of course nobody knows what's been done to them since then??? They are 4 blades so you can check the diameter.

Take care and let me know if you want us to go through them.

Brett
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Old 05-31-2012, 08:27 PM
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Thanks for the info Brett.

I ran the props last weekend....and picked up 7 mph @ 4000rpm's!!!!! (64mph)

....but could only turn them to 5100 at WOT. They have been cut down to a diameter of 16.5 and I think are probably more than 31 pitch.

My other set of props are a 16.5 diameter and a true 29 pitch. I run 57 mph @ 4000 rpm's and can get 6100 rpm's out of them at WOT.
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Old 05-31-2012, 08:42 PM
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Geez! Only 64 @ 4k? I'm 56 @ 3500. Maybe we should trade boats? LOL
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Old 05-31-2012, 08:43 PM
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Indeed true pitch of those propellers from that vintage would be 32.
Use that for calcs.....

B
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Old 05-31-2012, 08:46 PM
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Hey Craig, I got some 17x29 props, that measured 29.5" of pitch on my local prop shop scan machine. Your welcome to try them if I can try those 16.5x29's you got....Mine are high polish finish, I know you like that lol
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