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Search: Posts Made By: jetpack
Showing results 1 to 23 of 23
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Forum: RC Boats General Discussion
07-20-2009, 04:40 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Good job, mcss383. I checked it out and there's not only a good selection, there's excellent tutorials how to choose and use the right stone.

The hardness of the stone is just as important as...
Forum: RC Boats General Discussion
02-28-2009, 07:13 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

I found a nice website which is for full-sized boats, but has lots of short, basic articles of props which help shed the light on a lot of terminology, what rake is all about, cupping, ect.

Very...
Forum: RC Boats General Discussion
10-25-2008, 10:22 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

The working side of the blade (face) should be the one to look out for. This cupped face is what gets most of the water. The back (front) of the blade is where the material should be removed. It...
Forum: RC Boats General Discussion
10-24-2008, 08:59 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

That is a significant gain in RPM's. It definetly shows the benifits of balancing. RPM increase is sometimes overlooked in balancing, thinking all you're doing is helping it run smooth, and not...
Forum: RC Boats General Discussion
10-12-2008, 08:10 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here's a couple of instruction sheets.

The first one comes with the Octura Balancer, the other comes with Prather props.
Forum: RC Boats General Discussion
07-28-2008, 10:16 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

I'm no expert but I think you're safe. I believe it is the dust and the fumes from machine polishing that I would worry about.

I use emery polishing sticks and wet polish with mineral oil. I...
Forum: RC Boats General Discussion
06-28-2008, 06:07 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

The plastic ones you're pretty safe that they are close to being balanced and lots of people change over to metal props. I think any nitro boat should use metal props, as I hear the plastic ones...
Forum: RC Boats General Discussion
05-18-2008, 10:05 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

True what Ron just said.

Another thought is have you checked just the balancer for balance? Is that what came with the Great Planes balancer? Mines longer and has plastic cones.

If the...
Forum: RC Boats General Discussion
05-18-2008, 10:01 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

So far so good, Fuelman. The prop should not want to stay on that one side, you'll have to work on getting it so that whole side is lighter. That means the balance from tip to tip is ok, it is just...
Forum: RC Boats General Discussion
02-04-2008, 12:28 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here is an additional reference to the different characteristics of Octura props:
Forum: RC Boats General Discussion
01-23-2008, 11:46 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

If you're making up your own ceramic or neodendum(?) magnet type, be sure one side stays adjustable to bring the magnet close as possible without touching to the arbor on the one end to take as much...
Forum: RC Boats General Discussion
12-20-2007, 12:11 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here is a good question from Spetz in Nitro Boats forum that hasn't been discussed on our boards, but post number 59 further up will have a Prop Tech Notes link which goes into the subject in more...
Forum: RC Boats General Discussion
12-19-2007, 11:12 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here's most (not all) of the different prop shapes by Octura, and if you compare the look of the prop blades to the prop characteristics chart you can get an idea of how each different blade shape...
Forum: RC Boats General Discussion
12-19-2007, 04:32 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

I noticed there are a lot of prop charts around, but none of them point where to start with sizes so I thought this would be good to add.
Forum: RC Boats General Discussion
11-22-2007, 08:36 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here's a few full-scale prop shapes for the imagination and for those that want to experiment shaping their blades....
Forum: RC Boats General Discussion
10-10-2007, 11:34 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Generally speaking, the difference is prop slip. Three blades will have more traction than two bladed, but add more engine drag and prop walk.

Three blade will accelerate better in rougher...
Forum: RC Boats General Discussion
05-09-2007, 11:08 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Here is a link to J&L Tools a division of MSC. They carry single sticks, all about three dollars each. Get 180, 220 and 320 grits - 1/8" x 1/4" x 6". Use them full length or score them against the...
Forum: RC Boats General Discussion
03-20-2007, 05:33 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

The front of the prop is where you remove the material. That means the part that faces the front of the boat when its mounted.

Not to be confused with the face of the prop, which is the rear...
Forum: RC Boats General Discussion
07-01-2006, 03:05 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

There is something I would like to point out about prop sharpening that maybe some people aren't aware of. This has been a concern of mine for quite sometime now, and maybe other people have...
Forum: RC Boats General Discussion
04-20-2006, 09:12 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

i found twin blade props cavitate more than three blade if you happen to spin out, but give better rpm's. Three blade props on a tunnelhull make it pull around better in a turn, due to the prop walk...
Forum: RC Boats General Discussion
02-01-2006, 02:38 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

Previous thread:


I included snapshots of the stones I use on my props for shaping and polishing. They seem a little forein to use at first, but once you work with them a little bit, its as...
Forum: RC Boats General Discussion
10-17-2005, 07:31 PM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

The two primary prop suppliers are Prather and Octura. Others maybe APC or Dumas. Each one of these companies only supply you with a raw casting. The balancing part is left up to the buyer, and it...
Forum: RC Boats General Discussion
10-09-2005, 08:44 AM
Replies: 163
Views: 108,458
Posted By jetpack

RE: Prop sharpening & other tips for new boaters

I balance and sharpen my own props. I use a Magnetic Balancer for checking my progress, and use Bear Abrasive polishing sticks. These are six inch long pencil sized hard polishing sticks used to...
Showing results 1 to 23 of 23


 
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