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Old Jan 10, 2013, 04:11 AM
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Originally Posted by MercerMaggot View Post
Just take off both the cockpit and remove the pilot - you don't need either. I lost both of mine a looong time ago.

I've never been able to knife edge my PZ Extra. On the other hand, I found the PZ T-28 to be fantastic at knife edge

thanks for that. happy the pilot can be removed. i will be doing that when i get it in a couple of weeks. cant wait!
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Old Jan 10, 2013, 07:08 AM
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Originally Posted by JDMJim View Post
Yea, I roll it over and it just falls out of the sky while knifedging....I have a 11x8 apprentice prop I can try....
Try an 11x7 prop, or some guys even fly a 11x5.5.
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Old Jan 10, 2013, 07:54 AM
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which is the best prop to use for prop hanging? the 11x7 id assume? is the stock up to it?
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Old Jan 10, 2013, 11:23 AM
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United States, IL, Joliet
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I'll swing by the shop today and scoop a 11x7...oh man, how exciting! It's just a matter of when I can try it....
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Old Jan 10, 2013, 02:45 PM
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Virginia
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I use the Parkzone Bf109 3 bladed prop with great results.
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Old Jan 10, 2013, 09:52 PM
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Canberra Australia
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It's a short coupled plane, so I think good knife edge will always be hard. On the other hand, others on this thread have said they regularly knife edge the plane. I think the CoG would be the critical factor here. I suspect it probably needs to be more forward than I would prefer for my flying.
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Old Jan 11, 2013, 06:01 PM
3D? I only got two thumbs!
United States, MA
Joined Jul 2012
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Quote:
Originally Posted by JDMJim View Post
Yea, I roll it over and it just falls out of the sky while knifedging....I have a 11x8 apprentice prop I can try....
Check the throw on the rudder. If you're not getting the full throw you may have problems like you describe. I had a problem with the rudder pushrod binding in the hole in the fuse on mine, severely restricting the throw in one direction. After I opened up the hole so the rod moved freely through the whole range it helped a lot.
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Old Jan 12, 2013, 07:00 PM
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United States, MD, Waldorf
Joined Jun 2012
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Nice flight from today

1 12 2013 Extra 300 F1 (6 min 33 sec)
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Old Jan 14, 2013, 07:56 PM
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I'm happy to report the stock prop is a much better fit than the 10x8 that was on it when I got it. I was able to get it vertical and hold it it for a bit while it torque rolled. Sounded awesome! Got a tail slide in there too...i think a 2200 is just too heavy to sustain those types of maneuvers. The KE is getting there...
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Old Jan 14, 2013, 08:39 PM
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I agree, the stock prop is tons of fun. Makes a great sound when it stalls too (during harriers, attempted hovering, tailslides, etc.).

@ MrMurder: If you want to take a shot at hovering, you'll want a prop that can provide lots of thrust and has the diameter to blow plenty of air over the control surfaces. A 12x6 has been the most successful one I've used, and the consensus on here seems to be the same. Best of luck, cause 3D with this puppy ain't easy!
Josh
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Old Jan 14, 2013, 09:24 PM
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I'm gonna try my 11x7 tomorrow....
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Old Jan 14, 2013, 09:30 PM
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Canada, AB
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I have always used a 11x8 and get 7 oz more thrust on less watts than the stock prop. Mine does have some aileron coupling but knife edge is absolutely no problem. Yesterday I flew a whole pack doing knife edge circuits.
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Old Jan 15, 2013, 09:12 PM
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Canberra Australia
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Part of my problem (with precise knife edge) is that I have hacked away into the battery hold so much, to fit large batteries, that the batteries just sort of flop around the inside and the CoG changes. I guess I should try a smaller (lighter battery) fixed in place to keep the CoG forward, but the nose as light as possible.
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Old Jan 17, 2013, 09:05 AM
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Originally Posted by jgalexander View Post
I agree, the stock prop is tons of fun. Makes a great sound when it stalls too (during harriers, attempted hovering, tailslides, etc.).

@ MrMurder: If you want to take a shot at hovering, you'll want a prop that can provide lots of thrust and has the diameter to blow plenty of air over the control surfaces. A 12x6 has been the most successful one I've used, and the consensus on here seems to be the same. Best of luck, cause 3D with this puppy ain't easy!
Josh
thanks man. i will try a 12x6 and see if i can get a prop hang out of this...i guess torque roll is the biggest issue trying to hang the 300? either way,it will be fun trying!
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Old Jan 17, 2013, 10:18 AM
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United States, FL, West Melbourne
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Originally Posted by JDMJim View Post
I'm happy to report the stock prop is a much better fit than the 10x8 that was on it when I got it. I was able to get it vertical and hold it it for a bit while it torque rolled. Sounded awesome! Got a tail slide in there too...i think a 2200 is just too heavy to sustain those types of maneuvers. The KE is getting there...
Oops, wrong thread.
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Last edited by Rickflaguy; Jan 17, 2013 at 11:35 AM.
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