please ID this prop 48-56238-12

[misterguru]

Bought on ebay, supposed to be 9p x 12 diameter 2 blade... but I cannot find the part number Googling... just checking.<br /><br />Thanks!

 

[Laddies]

Re: please ID this prop 48-56238-12

The - 12 indicates the it is a 12" pitch it fits most mid size engines, make use to use the right prop hardware

 

[misterguru]

Re: please ID this prop 48-56238-12

Are you sure? it is supposed to be 9p x 12 " diameter

 

[KIGuy52]

Re: please ID this prop 48-56238-12

Don't argue with Laddies...he knows his stuff.

 

[misterguru]

Re: please ID this prop 48-56238-12

OK, well here is the ad I bought it at:<br /> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=4568326827&sspagename=ADME:L:RTQ:US:1 <br /><br />It was claimed 11 diameter x 9" pitch actually.<br /><br />The part number was listed continuously with the "12" on the end, not "-12"<br /><br />Argghhh... you would think I could Google it or find the exact part number in a reference.

 

[Dunaruna]

Re: please ID this prop 48-56238-12

Dunno if this helps or not - I have a michigan wheel/merc cross reference book, that number doesn't list anywhere.

 

[misterguru]

Re: please ID this prop 48-56238-12

This part number was stamped on the hub. <br />Click Here for a photo of the part number<br /><br />Thanks for your help.<br /><br />I received an enail from him and he agreed to return the prop but also made a comment about "internet experts!"<br /><br />Whatever! I have learned more on the net than I ever did in school or trial and error!

 

[misterguru]

Re: please ID this prop 48-56238-12

I need to post this just to let everyone know to not believe everything you are "sure" of. I have learned much from these forums, but even the best of experts can be wrong too.<br /><br />Ummm... I have no idea about that part number still, but the man I bought it from was right: It must be a 9p.<br /><br />My RPMs climbed 1100 from 4000-4100 to 5200 and my speed went up 4mph, from 19 to 23mph.<br /><br />This is a great little prop and was just as he said it was on eBay.

 

[Laddies]

Re: please ID this prop 48-56238-12

Tim...im not an internet expert...im a mercury master mechanic...heres your proof..right out of a mercury factory manual...should have known this would happen tryin to help a flatlander ...Bob.

 

[misterguru]

Re: please ID this prop 48-56238-12

Wow... ok wonder if it has been reworked to a smaller prop? My RPMs didn't shoot up 1100 going from a 3 blade 12" pitch to a 2 blade 12" pitch.<br /><br />Thanks for the scan.

 

[misterguru]

Re: please ID this prop 48-56238-12

Hey, again let me apologize... I mean...<br /><br />(1) I buy a prop from a guy on eBay with great feedback.<br />(2) It arrives and seems to be 12p<br />(3) I post that here and you agree<br />(4) I email the guy and he is CERTAIN the prop is 9p, but offers to return it to make me happy<br />(5) I bolt it on and it performs like a 9p - great<br />(6) I post here thinking all is solved... thinking the seller was right because the performance is right<br />(7) You show me proof the prop is 12p and I feel stupid all over<br /><br />Sorry man! It made sense to me, but you have to be right.

 

[AMD Rules]

Re: please ID this prop 48-56238-12

Maybe it is the wrong hub? Mis-numbered?

 

[Coolmaker]

Re: please ID this prop 48-56238-12

Whew.... a two blade prop has 1/3 less drag than a 3 blade prop, so why would one not expect it to turn more r's!!!!!!! Basic math....... <br /><br />A side note: NEVER ARGUE WITH LADDIES!!!!!

 

[misterguru]

Re: please ID this prop 48-56238-12

Originally posted by CoolMaker:<br /> Whew.... a two blade prop has 1/3 less drag than a 3 blade prop, so why would one not expect it to turn more r's!!!!!!! Basic math....... <br />

Wow... never thought of it in those complicated terms: 2 blades = 33% less drag than 3<br />hahahhaha<br /><br />You know the 4 blade Michigan Vortex I tried should have dropped me to 3200 - 3400...<br /><br />I appreciate Laddies input very much. But you, friend, need to drink another beer if you think a 2 blade and 3 blade of the same pitch will result in 1100 rpms difference. Party on.