Acme Harmonic Prop Puller 4 R27

T

tincup

Active member
Joined
Dec 19, 2011
Messages
44
Fluid Motion Model
C-28
Acme sells one for the 1.25 shaft for $44.00. Unadvertised.
 
Do you have a link to the site that sells these?
 
My only reservation about the harmonic is if I am in the water changing the prop. I carry a spare prop and conventional puller. If cruising I can always go to very shallow water and pull the prop if I have to. No sure if the harmonic will work when submerged in water.
 
I agree with Mike. The Harmonic pullers work great on trailerable boats that are primarily stored on the trailer. They work great when you are propping a boat, installing a prop try it take it off put another on...... To use a Harmonic puller for removing a prop that was installed correctly ( prop nut torqued to shaft diameter specifications seating the prop on the shaft taper properly) and removing a prop that has been on the shaft of a boat left in the water for a season or two. Good luck, I have seen boaters and marine repair facilities using the Harmonic method, beating the end of the shaft and increasing the size of the hammer with sometimes no results and maybe damage to the thrust bearing in the transmission. A conventional puller usually prevails. The Harmonic and conventional pullers both work. They're easy to make and even easier to buy. The pullers that I looked at to purchase required alterations at the area between the Prop and shaft log/strut there is less then an inch of space. I made this puller. It would not be user friendly in the water but doable in an emergency.
Brian Brown
26 Cutwater
PORT-A-GEE


 
Received HPP. So far no joy. Rudder prevents square hit on puller. Doubt very much it would work in water. Also concerned about possible damage to other parts per previous post

At this point conventional puller is looking good except for cost I'm seeing close to $400.00. Any less expensive off the shelf?

The custom built looks really creative. Assuming u cut end pieces from plywood with hole saw? Saber saw for cutout?

To clarify I trailer.
 
The conventional pullers are not cheap. I did pick one up for around $200, it was on line and also sold at West Marine. When they were honoring match any price they sold it to me for the $200 even though they were selling it for $400. Shortly after that they changed their policy to matching any brick and mortar within 50 miles. I guess I pushed them over the brink. 😀
 
The puller plates are 3/4 " thick carbon steel then coated with Galvanized coating . The plate that goes in front of the prop had to be milled to 5/8 inch for clearance. The threaded rods are threaded into the plate . The plate behind the prop is tapped to except a 1" bolt . ( Pressings bolt )This eliminates the need to use of the hammer. There is another post on Tugnuts 29 Ranger prop puller the puller plates where made out of aluminum. Nice set up and Aluminum is easier to work with.

Brian Brown
Cutwater 26
PORT-A-GEE



tincup":9lwvxaxr said:
Received HPP. So far no joy. Rudder prevents square hit on puller. Doubt very much it would work in water. Also concerned about possible damage to other parts per previous post

At this point conventional puller is looking good except for cost I'm seeing close to $400.00. Any less expensive off the shelf?

The custom built looks really creative. Assuming u cut end pieces from plywood with hole saw? Saber saw for cutout?

To clarify I trailer.
Click to expand...
 
thanks for all suggestions. Am without metal working experience and tools. But the aluminum version looks like it can be done with a cutoff blade. circle cutter, drill press and hacksaw. Plan to make a prototype out of plywood to confirm dimensions.

FYI - Acme propellers recommends torqueing the nut to 35 ft/lbs.
 
Hey all. I replaced the prop on my R-27 using a gear puller which I was able to rent from the local auto supply place, but later bought one to keep on board. It worked and, as those who have pulled props know, it is mildly terrifying to torque something that much until it loudly goes "sproing" (gently beat the prop with a rubber hammer, which helps). And you will find that some gear pullers work and others won't due to their configuration. I left mine with the guy who bought my 27 so I can't go find it.

This is a much cheaper option if you want to try it.

Jeff
 
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