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RE: Prop sharpening & other tips for new boaters - 1/22/2010 6:14 AM   
hunternaf


 

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Status: offline 		great thread an I hope to meet ron some time after the water softens around here, I have owned a prather 31" deep v with a k&b 3.5 for 20yrs and a christmas gift (to myself) of an unknown tunnel hull with the same engine but have never been to a pond or lake that had another boat on it at the same time. I only live about 75 miles from Kalamazoo. Gary in New Carlisle In.

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RE: Prop sharpening & other tips for new boaters - 1/22/2010 9:05 AM   
Ron Olson



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Status: offline 		I've heard of your city but have no idea where it is. I spent 3 days in Hobart back in September for the Indy Master's race. You really ought to go there this coming year, you won't regret it!

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RE: Prop sharpening & other tips for new boaters - 4/28/2010 11:34 PM   
tonywayne



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Status: offline 		nice thread

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RE: Prop sharpening & other tips for new boaters - 8/24/2010 9:23 AM   
tonywayne



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< Message edited by tonywayne -- 8/24/2010 5:56 PM >

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RE: Prop sharpening & other tips for new boaters - 8/31/2010 10:10 AM   
coolguy1975


 

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Status: offline 		hey guys...hope all is well with ev1..got some ? i hope can be answered or be helped on.on my gf's nitro hammer she bought a brass prop.its bigger then what was on there...will that hurt the 15 marine engine thats on the hammer? do they make a longer shaft i can buy for that boat? also some people on those forum said it would be good for me to go with a sullivan 6 ounce slant type tank instead of that crappy flip top thats junk that comes with it....how do i mount the tank on the hammer?...and how do u fill those tanks?...any help would be sooo much appreciated..thx a million!

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RE: Prop sharpening & other tips for new boaters - 8/31/2010 10:32 AM   
Ron Olson



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Status: offline 		Wow, lots of questions there!
The .15 really can't turn a lot of prop and with the 1/8" shaft, the selection that's out there is about the biggest that the boat can handle anyway for that engine. The Octura X-435 is about all it will take anyway and will fit in there with the stock shaft.
Trying to overload the engine with anything bigger may result in more problems as the crankshaft is really weak and known to break where the intake port is.
A Sullivan SS-6 is on the big side, an SS-4 might be a better fit yet still give you a decent run time.
Filing is done through the line otothe carb, remove it to fill preferably with a pump, electric or hand-crank. The plane guys used to use a fuel bulb but I don't see those around much any more. Think turkey baster but with a rubber bulb.

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RE: Prop sharpening & other tips for new boaters - 8/31/2010 11:01 AM   
coolguy1975


 

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Status: offline 		is the Octura X-435 a brass or metal prop?...how would i mount the 4 ounce tank since u said thats a better fit probably?

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RE: Prop sharpening & other tips for new boaters - 8/31/2010 4:46 PM   
Ron Olson



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Status: offline 		It's better answered in the Nitro Hammer thread as we don't want to get this one off-topic. Do a search for it.

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RE: Prop sharpening & other tips for new boaters - 9/1/2010 8:19 PM   
Nitro boater


 

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Status: offline 		Guys I have one fsr boat with one of Daves zen 7 motor in it,the motor revs to high.I got a prop from hin as well but looking for a good prop for this boat (submersable prop) can anyone help?

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RE: Prop sharpening & other tips for new boaters - 11/11/2010 5:53 AM   
antslake



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Status: offline 		Wow, this was a great informative thread, I think I spent 2 days going through all the stuff. I've only tried to do one prop so far, and it came out less than good (shiny and balanced, but maybe ruined the face side of it) Now that will be a test prop.

One thing I did, which was not mentioned here was when I was trying to balance the prop, the prop was sitting horizontally on the balancer, always falling to one side. I tried taking material from the lower trailing edge, and the lower leading edge to balance, but found that just taking material from the hub was enough to bring it into balance.

I use the top flite balanced, and when I am positioning the prop on there, I try to let one side not actually touch the magnet, just get it close enough to let the magnetic force hold up the rod and prop, I position the prop closer to the side that is touching the magnet. It seems to spin more freely that way, and be more accurate.

I also have a question about just how important the face of the prop is. In planes, the top of the wing is the more important part of the airfoil. I wonder if the science behind airfoils can apply to props as well? I wonder if there isn't some sort of "lift" involved that would help propel the prop forward by creating low pressure in front of the blade?

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RE: Prop sharpening & other tips for new boaters - 11/20/2010 9:18 AM   
TFLHOBBY-Candy



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Status: offline 		Hi Ron

Have you ever been to the 2010 Hungary Naviga FSR World Chimptionship or any orther race ?

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RE: Prop sharpening & other tips for new boaters - 11/20/2010 9:27 AM   
Ron Olson



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Status: offline 		I'm lucky to get out of Michigan and have never been abroad. I was in Canada overnight once, that's it.
I have been to 2 big boat races, the IMPBA Internat's back in 2003 and raced at the Indy Masters race this past September but other than those, just district events. I couldn't even get my wife to go to Las Vegas for our 25th wedding anniversary this year!

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RE: Prop sharpening & other tips for new boaters - 11/23/2010 5:00 AM   
TFLHOBBY-Candy



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Status: offline 		Wow.sounds nice.
but what a pitty is that you can not spend the 25th wedding party with your wife in Las Vegas.I think she must be understand you.
I am a new RC boat medel lady.and one of my friends he have even been to the Gemany Naviga MONO/ECO race and his teammates been to the Hugary Naviga FSR .so I had heard some interesting stories of it .
but this is my first time to heard of Indy Masters race .hopefully you can share some interestings with us.
thank you


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RE: Prop sharpening & other tips for new boaters - 11/23/2010 8:10 AM   
Ron Olson



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Status: offline 		I could but don't really want to take this thread off track.
I't's good to see another lady in here with an active interest in model boats as most let their husbands visit the forum sites. My wife got into boats briefly and got pretty good at hearing if the engine was rich or lean and would tell me if the boat needed a prop change.
We have several other ladies in here that are quite good, I won't mention their names as the men might find out that a woman helped them out! A couple of them are actually what I'd consider good friends.

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RE: Prop sharpening & other tips for new boaters - 11/24/2010 6:27 AM   
TFLHOBBY-Candy



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Status: offline 		I am only the 2nd famel to play RC Boat here ,and also I am the new ,but she has over 10 years experience . with a pitty that she is live in Beijing ,and I am in Guangzhou ,so I don't have a chance to discuss with eachorther.
 luckly there is a race will be holding near my house ,so I will be visit there and to learn from my friend. 

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RE: Prop sharpening & other tips for new boaters - 12/26/2010 10:01 PM   
C1Driver


 

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Status: offline 		Where can I find 5 blade props?

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RE: Prop sharpening & other tips for new boaters - 12/27/2010 4:19 AM   
Ron Olson



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quote:

ORIGINAL: C1Driver

Where can I find 5 blade props?

Depends on what you're putting them on. 5-blade props for scale ships are easier to find than say, a gas race boat which are usually custom-made.

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RE: Prop sharpening & other tips for new boaters - 12/29/2010 9:45 PM   
Apismelifera



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http://www.prop-shop.co.uk/

Only place I could think of right away. Try searching on google?

Also

http://www.raboesch.com/

< Message edited by Apismelifera -- 12/30/2010 3:34 AM >

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RE: Prop sharpening & other tips for new boaters - 1/8/2011 3:13 PM   
egneg


 

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quote:

ORIGINAL: C1Driver

Where can I find 5 blade props?


You can get them here as well but the 5 blades start at 80mm. I have cut them down to 65mm but it's a lot of work.

http://www.randrpropshop.com/rc_model.htm

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RE: Prop sharpening & other tips for new boaters - 5/29/2012 5:21 PM   
wholehog


 

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Status: offline 		My question is about polishing. I here to polish the whole prop,then just the back side,then a satin finish is better. What is the best final finish? Thanks


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RE: Prop sharpening & other tips for new boaters - 5/29/2012 7:32 PM   
Ron Olson



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Status: offline 		Do them up any way that you'd like. A shiny finish is fine for your average boater. A rougher finish like a satin, matte or still a little rough from filing or sanding will help to create tiny air bubbles around the prop freeing it up a little more. Those that run SAW or the people trying to eke an extra MPH out of their boat will do this.

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RE: Prop sharpening & other tips for new boaters - 5/29/2012 7:48 PM   
vasek



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Status: offline 		Interesting. Ron, do you have any pics of the mentioned finishes?

Thanks,V.

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RE: Prop sharpening & other tips for new boaters - 5/29/2012 9:21 PM   
wholehog


 

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Status: offline 		My question is on polishing. I here satin finish is best,then to polish the backside,then to  polish the whole prop. Test proven coments welcomed. Thanks


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RE: Prop sharpening & other tips for new boaters - 5/30/2012 4:44 AM   
Ron Olson



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quote:

ORIGINAL: vasek

Interesting. Ron, do you have any pics of the mentioned finishes?

Thanks,V.

I wish that I did. I bought some props that were done up at Andy Brown's CMD Racing to see how mine compared to the way that they do props at his place. it was easy to "counterfeit" the way that he has them done by just leaving marks in the blades that I could do with a file or sander. The machine that he uses is called a Linisher, basically a belt sander with a long sanding belt with no backing plate. To my surprise, I paid big bucks to buy props that weren't as sharp or as well-balanced than mine were!

Wholehog, I just like to have good-looking props on my boats so I like to polish them up enough where they don't look nasty. I can't see dropping big bucks into a boat then have some green dull prop hanging off the back. Other prop work will yield more results than just a pretty or ugly finish.

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