Author Topic: Another Prop to the Collection (Read 155844 times)

Hyperacme · « **Reply #60 on:** December 30, 2011, 05:43:24 PM »

What brand ?
21 or 22 pitch ...
23P ?

David CVX-16 · « **Reply #61 on:** December 30, 2011, 07:05:27 PM »

Gregg, I'll wait until it is finished to post the pictures and the stats. Pitch is 22". The prop is a long shot and if it does not work, maybe some else in our group may be able to use it. Bought it cheap.

Jerry · « **Reply #62 on:** December 30, 2011, 09:17:27 PM »

4 blade?

David CVX-16 · « **Reply #63 on:** December 31, 2011, 08:46:57 AM »

No, not four blades. The more blades on a prop, the slower it is. I'm after top speed.

GPS speedometer reading not mine. LOL. Is that of an Allison boat with 280 HP racing Merc for sale for $32,000.

David CVX-16 · « **Reply #64 on:** January 06, 2012, 06:14:26 PM »

My latest prop is a Mercury Quicksilver 2-blade bronze last made in the early 1970's. Called the Hi-Performance series to run on light boats with the motor raised. Came in even pitchs from 20" to about 30" in either a 13 or 14 inch diameter blade. Mine is a 22" pitch 13 inch diameter. Even with the prop in like new condition, took about four hours to get sand off the layer of grime and factory scratchs, blend the blade leading edges better near the hub area, and polish.

Hyperacme · « **Reply #65 on:** January 06, 2012, 06:31:36 PM »

Dave
Were your other bronze props 21 P ?
Looks like ya worked your magic on it !
SHINE ! SHINE !

David CVX-16 · « **Reply #66 on:** January 06, 2012, 08:36:31 PM »

Gregg, yes the other bronze props were 21" pitch and a different shape to the blades. This is a special purpose prop which may or may not work.

Jason · « **Reply #67 on:** January 06, 2012, 10:50:17 PM »

sure looks mean!

Retro Performance · « **Reply #68 on:** January 26, 2012, 07:59:15 AM »

Here's a couple props from the the early 70's.....the stainless is from Mercury, a solid hub 28 pitch. I think it evolved into the choppers? Can anyone confirm that? The bronze is a Michican Wheel 27 pitch that is also a solid hub. I dug these out to run on a new 150 XS project I will be running this spring. Anyone have any info/experience with these?

David CVX-16 · « **Reply #69 on:** January 26, 2012, 01:28:11 PM »

I tried a 2-blade Quicksilver stainless steel prop from Mark's prop shop many years ago on the Glastron V-153. I do not remember the pitch of the prop or if I had the 80 or 115 HP Merc at the time. But I do remember it not working or hooking up and the high RPM's for the low MPH traveling.

My closest props are the Mercury stainless steel 22" Chopper over the hub exhaust and the Mercury Hi-Performance 22" pitch 2-blade bronze, neither of which has been tested yet.

There was an article of the evolution of propellers over the years in Bass and Walleye Boats magazine years ago with the significant props along the way, the OMC Raker and the Quicksilver Chopper being two of them. The article also discussed the increase in technology in propeller design over the years so that the over the hub exhaust props may now only be 1 MPH faster or less than the through hub exhaust.

In the old days, one prop was designed for all types of boats. Now props are designed for a specific type of boat - low, medium, high performance and with difference characteristics - low torque, low, middle, high range acceleration, bow lifting, grip around corners, to the point where Bass and Walleye Boats in their testing of nine different props on the same boat and motor would give, in addition to the MPH attained, and the weak and strong characterists of each and then pick the best all around prop, and then not always the fastest.

They would also test the straight factory prop against the same worked over prop by DAH, or some other expert well known prop shop.

At both the Allison and the Scream and Fly Websites, they have sections devoted to prop discussions. I have never studied them in detail, but for high perforance boats, the best prop is invaluable, and the owners will go to all lengths to get the best. Another guide to selecting props is to read what props the Allison owners are using in both the Allison Owners site and the Bass Boat Central where owners tell the model of Allison, make and horsepower of the engine, height of propshaft to bottom of boat, prop make, whether modifed, and the MPH and RPM's.

http://forum.allisonowners.com/forumdisplay.php?f=11

http://allisonowners.com/xs2003.html

http://www.bassboatcentral.com/allison.htm

Jerry · « **Reply #70 on:** January 26, 2012, 01:54:44 PM »

OK first, Retro, who are you, and where are you?

I will be running basically the same motor 1500 shorty on a GT160. I want to try a Pro ET 23p. I think yours have too much pitch unless you plan on 90MPH.

David CVX-16 · « **Reply #71 on:** January 26, 2012, 02:51:39 PM »

Jerry, his name is Don, owner of Retroperformance, member of TCPBA, and lives in Roseville. Don had a booth at last year's boat show.

http://www.retroperformancemarine.net/

David CVX-16 · « **Reply #72 on:** January 26, 2012, 05:14:50 PM »

Jerry, I believe the Mercury Pro ET is for the bigger Mercurys, having a diameter of 14 -1/2" with pitches from 26 to 32.

http://www.mercuryracing.com/propellers/proet.php

My guess is that you need a Chopper 22", Trophy 22", or a Laser II 22", all made for your small hub 150 HP Mercury.

Retro Performance · « **Reply #73 on:** January 26, 2012, 06:16:05 PM »

Jerry, I live in Roseville MN. I have worked in the twin cities boat industry for the past 35 years. I am expecting the XS to turn these pitches based on results of a 150XS on a CheckmateMX15 (480 pound hull) That my brother ran in the late 70"S. Why would you put a 15 inch mid on a GT160? What is the weight of your GT160. The attached photo is the hull the XS will run on.....it is about 100 pounds lighter than the MX. Who and where are you? By the way I do have an MX15 now with a 2.0 liter Mercury on it as well. If I can't spin those pitches I will go to smaller.

Jerry · « **Reply #74 on:** January 26, 2012, 09:01:54 PM »

Hi Don. Welcome to the group. I'm in Bloomington. I'm an old drag racer that got sucked into boats about 10 years ago with a Glasspar Seafair Sunliner with a buick V6 It's still in the garage with a 3.8 stringer mount to go in. I picked up a '58 Glastron FireFlite and turned it into a 50's style hot-rod.

Then a '57 Larson All American I found in the junk yard.

Then went to California and got a '59 Classic Barracuda that I'm putting twin '68 Johnson 35s on

This group runs fast. The FireFlite won't keep up, so when Ole Red had this GT160 with the dash moved back 18" we went down to Oklahoma City last Memorial weekend and picked it up.

Why the short mid? Cool factor and I think it will work better than a bunch of jack plate. I have a lot of time and money into it, so I hope it works.

As an old hot-rodder I try to do what nobody else has done. Any fool can buy a fast boat and big motor, it takes something special to take a slow boat and make it fast.

Retro Performance · « **Reply #75 on:** January 26, 2012, 09:48:14 PM »

Thanks for the welcome.....nice collection, I really like the GT 160 with the cockpit moved back.....If I can be of help with set up let me know, As for any fool can buy a fast boat and a big motor...........I did this this winter as well, and more than a couple people have called me a fool. LOL

Jerry · « **Reply #76 on:** January 26, 2012, 10:36:02 PM »

That's gonna sink!!

Retro Performance · « **Reply #77 on:** January 27, 2012, 08:31:26 AM »

I hope not, I think the angle of the picture makes it look funny....here it looks better. Power to weight ratio......here the weight of the power is the same as the weight of the boat. Can you have too much power?

Retro Performance · « **Reply #78 on:** January 28, 2012, 04:45:44 PM »

David.....I was doing some house cleaning at the shop today and I found this.....a stack of vintage 2 blade Mercury I6 props. The top one is bronze and the rest are aluminum. Maybe we can hit Owasso or Johanna this spring for some testing....

David CVX-16 · « **Reply #79 on:** January 28, 2012, 05:23:00 PM »

Don, what is the part number on the 2-blade bronze prop? Mercury made several 2-blade bronze props throughout the years, their best 21" pitch prop, in my opinion, is 48-49630. I plan on testing 8 different props one after another this spring once the '88 115 Merc is on the V-153. Should be interesting. You are certainly welcome to test any of these props on your setup or if you have anything in the 21" to 22" pitch range, that would be great. Last year, Ross and Jason came along to White Bear Lake for testing in the spring. Maybe we can set up a prop testing day for all those interested.