Prop difference?

[spareparts]

the Mirage prop would be my recommendation as well

[cfelton]

What do you think about the size. 15 x 19 looks like the size most chosen.

[spareparts]

A 17 would put you in the mid 30's(too slow), a 19 would put you in the low 40's

[cfelton]

How about the diameter, does 15 inch sound right? I'll probably go with a 19 pitch for speed and economy. I don't pull skiers or a tube very much so I guess Im trying to get more milage and top end speed. My engine kinda sounds like its straining running WOT. If my buddy will swap props for a day maybe Ill try that and see how that does. I know his prop is a 19 pitch, not sure of the diameter.

[THEFERMANATOR]

Originally Posted by cfelton

How about the diameter, does 15 inch sound right? I'll probably go with a 19 pitch for speed and economy. I don't pull skiers or a tube very much so I guess Im trying to get more milage and top end speed. My engine kinda sounds like its straining running WOT. If my buddy will swap props for a day maybe Ill try that and see how that does. I know his prop is a 19 pitch, not sure of the diameter.

Only downside to the 15" diameter is you will most likely have to trim your trim anode or go with a smooth one to clear it. And be prepared to step down in pitch as the larger diamter bites better with less slip.

[twhrider2]

C... I have a Mirage 15.5x17 that gave me 38mph at 4600 WOT, a little too much RPM for the 2-barrel, I now have a 15.25x19 Mirage that I hope to try soon. And yes you will have to trim a regular trim tab. I did try a 19p aluminum that gave me 4300 WOT and engine sounded happy there no lugging or overturning but it had been ground too thin and cracked. BTW timing is 5/6 degrees, pertronix and 89 non-ethanol.
If you would like to try the 17p Mirage you are more than welcome to, also have a 21p ss not sure of make it gave upper 3's in rpms.

[bigshrimpin]

I love the mirage prop for the v20, if you get a chance try an enertia. I gained 3.5mph switching from a mirage plus 15p to enertia 17p turning close to the same rpm's.

[cfelton]

If I can find one I might give that a try! Asked my buddy and I don't think he was too keen on swapping props for a day. He did say it was a 19 pitch and he got it from The Prop Shop up in Virginia, next to Portsmouth Trailer Service. Said he paid 250.00 for it.

[bigshrimpin]

This is a old vertical reed 1987 Merc 175hp powerhead pushing my 23 seacraft with a 17p enertia in a little chop.

https://www.youtube.com/watch?v=jg7c...ature=youtu.be

With the 15P mirage plus WOT bounced b/w 39-40 with a full tank.

with the 17p enertia I had no problem hitting 42-43

[cfelton]

Looked up the Enertia prop on ebay, found a few but they ain't cheap are they. I'll try to find a used one. Do you remember the diameter? That 175 had that boat in the wind! looks like it performed very well!