Shrike 10 with Norvel AME 25 BB  
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Shrike 10 with Norvel AME 25 BB - 7/30/2003 7:32:02 AM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		I'm getting ready to test this engine on my Shrike 10. What kind of speed should I expect? I plan on trying many props. 8X6, 8X8, 9X4 and 9X6 and maybe some others.
I'm sure someone is running this setup...Which prop is giving you the best performance? (Speed)

Help me out Revver Brothers....


Charlie

Revver #31

< Message edited by Gootrod -- Jul 30 2003 2:38AM >
       Post #: 1

Shrike 10 with Norvel AME 25 BB - 7/31/2003 12:32:42 AM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Hey Charlie, just noticed your post and wanted to inform you that I picked up a few props today an APC 8X4, 8X5, 8X6, you may want to give them a try this afternoon. You can add these to your list of props to test.

Charlie

(in reply to Charlie E)
       Post #: 2

Shrike 10 with Norvel AME 25 BB - 7/31/2003 12:35:14 AM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Thanks Charllie for replying to my post. I was just about to give up on getting advice on the Norvel/Shrike combo.

Thanks again.
Charlie

(in reply to Charlie E)
       Post #: 3

Shrike 10 with Norvel AME 25 BB - 7/31/2003 8:14:44 AM   
pdxpaul


 

Posts: 135
Joined: 3/23/2002
From: Portland, OR, USA
Status: offline 		Hey Charlie, open up the window when using the CA. You are beginning to talk to yourself. I don't own a Shrike nor a Norvel 25, so take this for what its worth.

I suspect your 9x6 is too much prop. That's what we run on our TT 40's, and get 17,000. Don't you want at least that rpm on your 25? 8x8 is about the same load per my rule of thumb (1" dia=2" pitch), so it's also too much. 9x4 is what I hear the combat guys run on their norvels, but it does not have enough pitch to go fast as you want to go. 8x6 sounds about right. I would also suggest trying a 7x7 and 7x8.

Paul

(in reply to Charlie E)
       Post #: 4

Shrike 10 with Norvel AME 25 BB - 7/31/2003 9:28:09 AM   
Darwin


 

Posts: 63
Joined: 12/4/2002
From: Sacramento, CA,
Status: offline 		Hi Charlie,

I also just finished my Shrike 10 (OS 25FX with a full Mac's tuned pipe) about 2 weeks ago.

I've been trying a bunch of APC props with this combo, including 8X5, 8.5X5, 8X6, 8X7, 9X5 and 9X6. So far, I think I get the best speed from the APC 8X7, but I haven't actually got a radar reading on it yet, so it's just a subjective feeling.

Not sure how your Norvel compares with the OS25FX, but I'm getting about 18,500 rpm with the 8X6 on 15% fuel. The engine is still new and isn't completely broken in yet.

I didn't tach the 8X7 prop yet; I'll try to get some good readings this week-end.

The local experts are suggesting I use the highest pitch prop that will still turn about 17,000 rpm (to get it "on the pipe" properly).

In the meantime, it's a kick to fly this little plane.

Our LHS had a $99 sale on the OS 32SX this month, so I picked one up for the inevitable Shrike upgrade!

Darwin

(in reply to Charlie E)
       Post #: 5

Shrike 10 with Norvel AME 25 BB - 7/31/2003 2:09:14 PM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Great information fellows. Thanks for replying.
I will post the results when I finish testing.


Thanks again,
Charlie

(in reply to Charlie E)
       Post #: 6

Shrike 10 with Norvel AME 25 BB - 8/4/2003 11:11:32 AM   
Darwin


 

Posts: 63
Joined: 12/4/2002
From: Sacramento, CA,
Status: offline 		Gootrod,

Here is my Shrike 10 with an OS 25FX.

I thought I better post a picture of it before I get distracted and fly it into the ground!

I've been flying this for about 3 weeks now and I get the best speed with an apc 8x7 prop at 16,500 rpm.
It is plenty fast, although I haven't got a measured speed on it yet. I'm estimating 110-115 mph.

I found that by setting the balance point slightly aft (about 1/8 to 1/4 inch of the CG point shown on the plans), I get better flair on landing. Any further aft and it gets squirrely.

Darwin

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(in reply to Charlie E)
       Post #: 7

Shrike / Norvel - 8/4/2003 3:43:09 PM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Good idea, posting a pic before it's to late. The Norvel .25 BB Revlite really moves. Next time out I'll check the speed. I'm not saying at this point, I just know it's fast and spooky.
8X4 APC 16,000 rpm. It will do more, I'm running her a little rich for a few tanks.

Attachments
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(in reply to Charlie E)
       Post #: 8

Shrike 10 with Norvel AME 25 BB - 8/4/2003 9:06:45 PM   
Darwin


 

Posts: 63
Joined: 12/4/2002
From: Sacramento, CA,
Status: offline 		Gootrod,

Hey, good color choice for your covering job! It kinda looks like you grooved out the hatch behind the engine mount, perhaps to make room for a rear-exhaust pipe sometime in the future?

The first half-dozen times I flew this thing I was pretty nervous. It is definitely the quickest plane I have flown. I pretty much just flew wide, sweeping turns and low passes over the field. Now, I'm now getting used to the speed and responsiveness of it and have started to try out more aerobatic moves. Of course, this is just about the time ya get cocky and plow it in (Hey guys, watch this!).

I noticed in another thread you are also working on a 40-sized Shrike. Have you finished it yet. These things are so cheap, I was thinking of getting one also.


Darwin

(in reply to Charlie E)
       Post #: 9

Shrike 10 with Norvel AME 25 BB - 8/4/2003 9:45:11 PM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Hey Man, yes I groved it out for the Rossi 15 I had on it for testing. Not the performance I was looking for but the Norvel is sweet. The Shrike 40 is still under construction.

Hey Darwin, if you have Broadband I can send you a video of my Shrike running a OS .20
Kinda quick but nothing like the Norvel.

Charlie

(in reply to Charlie E)
       Post #: 10

Shrike 10 with Norvel AME 25 BB - 8/4/2003 10:33:46 PM   
Darwin


 

Posts: 63
Joined: 12/4/2002
From: Sacramento, CA,
Status: offline 		Gootrod,

Ha! Well actually I downloaded your video almost a month ago. At least I think it was yours...the one with the Tesla sound-track! Good choice of music, by the way.

I always get a kick out of you, at the end, saying somethin like..."I think she was movin'.."

I keep its icon on my desktop and play it every now and again, and my wife always says...Not again!

Anyway, great job on the video-it helped inspire me to finish mine and get it in the air. Now, you need to make another one with your Norvel power.

Darwin

(in reply to Charlie E)
       Post #: 11

Shrike 10 with Norvel AME 25 BB - 8/5/2003 1:24:42 AM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		LOL, my wife says the same thing, LOL
I play it from time to time just to drive her crazy. I turn it up pretty loud to get the effect.

Hey you need the new version. Two camara setup. It still has the OS 20 on it but the two camara setup is cool. The next video will be the Norvel/Shrike combo.

http://rclibrary.com/vids/Shrike_6-23-2003.mpg

(in reply to Charlie E)
       Post #: 12

Shrike 10 with Norvel AME 25 BB - 8/5/2003 1:41:34 AM   
Darwin


 

Posts: 63
Joined: 12/4/2002
From: Sacramento, CA,
Status: offline 		Gootrod,

I will take a look at the new version tonight when I get home. I don't have dsl in my office at the moment.

It just occurred to me that the 1/12 scale reno racers we race at our club might also qualify for extreme-speed planes. These are small (about 3 lbs) hand-launched planes based on the full-sized Reno racers. The wings are about 200 to 250 sq inches. There are some race rules that limit the engine size according to the wing area, but they fly as fast, or even faster than the Shrikes. People are even putting Dubb Jett 25’s in them. Zoom!

We had our first race last month, and it was a blast, even if we only had 5 planes competing. If you can imagine 5 Shrikes with the same sized engines flying around the pylons , it is probably close!

Here is a link to our club web site and some pics of our racers. Mine is the yellow (of course) “American Jet” bearcat. It also has a OS 25FX and performance pipe. For some reason, I have been accumulating a lot of yellow monocoat over the years, because I keep forgetting I already have 2-3 rolls stashed away.

http://www.sacramento-rc-flyers.org/events/renoracers_jul03/index.html

Flying these little racers gave me the confidence to fly the Shrike.

Darwin

(in reply to Charlie E)
       Post #: 13

Shrike 10 with Norvel AME 25 BB - 8/5/2003 2:00:09 AM   
Charlie E



Posts: 153
Joined: 3/13/2002
From: Whitesburg, TN, USA
Status: offline 		Hey Darwin, nice plane. I bet you guys have a blast. Cool site. Let me know what you think of the video. Remember, for the real effect crank it up. Your wife will forgive you eventually.


Charlie

(in reply to Charlie E)
       Post #: 14

Shrike 10 with Norvel AME 25 BB - 8/5/2003 11:21:34 PM   
bsumpter



Posts: 118
Joined: 5/31/2002
From: Greeneville, TN, USA
Status: offline 		Is there a rule of thumb for determining prop size / pitch for the greatest speed? I have heard that more pitch = more speed, but for the life of me the 8x4 that Charlie used at the field seemed faster than the 8x6 did. The little Norvel was SCREAMING, and hand-launching was an experience.

Perhaps the 8x6 wasn't letting the Norvel get up into the RPM range it likes?

Just a little confused on prop selection when it comes to these speed planes. All thoughts appreciated.

Brian

(in reply to Charlie E)
       Post #: 15