Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Shrike 10 on OS.32SX

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Old 09-06-2006, 11:20 AM
  #1  
nexxa
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Default Shrike 10 on OS.32SX

Just want to share my work.
Maiden flight - next weekend, and for sure I will bring my video camera, and post result.
Still remaining work to do.... finishing the covering, installing radio gear, motor.... cg, balance....

Final expecting weight: 2.5 pound
Spec:
6 oz gaz tank
3 standard JR servo, receiver
4.8v 1100 mAh Ni-Mh batterie
OS.32SX on mac Tune pipe
Prop APC 8X8 (17 250 Rpm) or 7.5X9 (18 250 rpm)

Mod:
1/4 inch carbon rod in the wing
shorter ailerons + wing tip
firewall back by 1 inch (for cg)
1/8 carbon rod for rudder
belly skid
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Old 09-06-2006, 11:43 AM
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ChuckL
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Default RE: Shrike 10 on OS.32SX

Looking good should be a blast to fly
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Old 09-06-2006, 01:01 PM
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Default RE: Shrike 10 on OS.32SX

Is that really the 10? or is it the 25 size. I thought the 10 was a 400size?
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Old 09-06-2006, 01:45 PM
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Default RE: Shrike 10 on OS.32SX

Yes it's a Shrike 10 for a .10 to .20 engine (.10 to .25). 35.5" inch wing.
But the Shrike 1/2 is 25" inch wing and is made for a speed 400 or .10 and less

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Old 09-06-2006, 04:36 PM
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Default RE: Shrike 10 on OS.32SX

This should be really fun!
good thing it is not the small one. the wing loading would be terrible.
I have been thinking about getting the 400 size and putting a mega 16/15/3 in it.
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Old 09-07-2006, 08:08 AM
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Default RE: Shrike 10 on OS.32SX

I like the V tail. I have a 40 size with 3 tails, different is cool.
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Old 09-07-2006, 08:50 AM
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Default RE: Shrike 10 on OS.32SX

Still in progress....
Remaining radio gear and engine installation.... It will be ready for the week-end!
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Old 09-09-2006, 08:39 PM
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Default RE: Shrike 10 on OS.32SX

Finaly finish!!!
Test flight tomorrow (sunday 10 sept)

Just hope I forgot nothing!

Final weight. 2.8 lbs
OS.32SX Mac tune Pipe
APC 8X8 17 250 RPM
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Old 09-09-2006, 09:57 PM
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Default RE: Shrike 10 on OS.32SX

That's one of the nicest looking Shrikes I've ever seen! Hope you have lots of fun with it.
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Old 09-09-2006, 10:02 PM
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Default RE: Shrike 10 on OS.32SX

I have to agree with combatpigg..that is the coolest shrike I have seen...good luck with the maiden[sm=thumbup.gif]....love the scheme..and sounds like it will be a ball
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Old 09-09-2006, 11:43 PM
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Default RE: Shrike 10 on OS.32SX

That is sweet. Mine has a lot of elevator travel when on high rates, really helps with landing.
Have fun with it, MikeB
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Old 09-10-2006, 04:31 AM
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Default RE: Shrike 10 on OS.32SX

Can't wait to hear how it goes. By the way, do you have any plan to tape her ? I remember the Kawassaki Shrike, very cool vid ! I guess yours will have similar performance
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Old 09-11-2006, 10:25 AM
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Default RE: Shrike 10 on OS.32SX

WOW!!! It's a missile!

Sunday it was the training day at our field. Beginners have priority on the field. But I have a chance to fly it 3 times. The first take off was erratic. Not enough elevator and too much ailerons. I was able by chance to land (crash) it on the runway after a 30 seconds flight. It takes me a lot of concentration to make it back on the runway. I wasn't able to make it back; every input on the remote was making the plane roll on it self. Very tricky. I broke the prop and the spinner.

Go back on bench, remove 50% of ailerons throw, put 50% exponential, and 50% more elevator. Change the spinner, the prop, and go again... Amazing... I can control it now, try 2 or 3 high speed pass, need to trim it again, to much sensitive... but very controllable....

The third flight (the video one) was not to bad, still a little bit too much nervous, but I start to have fun. Remaining some trimming to do, to make it perfect, but I'm close.

With an APC 8X8, the plane do a 236 Km/h (141 Mph) after a medium dive and 216 km/h (129 Mph) on flat flight, not bad. The engine on ground run this prop at 17 300 rpm, in the air it unload a lot, the sound is too cool. Like I said, they were many beginners on the field. It was just too cool that day. Everyone was there and watching this little plane screaming in the sky.... . The only sound we can hear was my plane!

Now, I will try other prop, I can go with more pitch and less diameter, like a 7.5 X 9.

I pass the camera to a friend, he tries to film this little plane, but by chance he's a better pilot than a cameraman!!! We can hear it, but sometime we saw it!
Next time I will bring a better video.


[link=http://207.96.235.218/videos/sebastien/shrike_1.wmv]Shrike10 first flight[/link]
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Old 09-11-2006, 02:31 PM
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Default RE: Shrike 10 on OS.32SX

has the pipe/ header setup been trimmed? it looks a tad long, and from my memory you should see 18k with that setup
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Old 09-11-2006, 03:02 PM
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Default RE: Shrike 10 on OS.32SX

Yep, I tune it on a test bench. But it was a very hot day with a high humidity factor. I stop cutting the header after blowing 4 glow plugs!

I need to tune it again. Too many factors have change. I use 25% nitro with 1 head shim, a medium/cold plug (Enya 5), an APC 8X8 prop. It runs a little rich, I can get 300 more RPM just by leanning it a bit without trouble.

I will try many props, until i make my choice, and re-tune the header.
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Old 09-11-2006, 06:18 PM
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Default RE: Shrike 10 on OS.32SX

Nexxa,

Holy crap, this is the fastest Shrike .10 I have seen, ever [X(]. Well congrats for coping with this beast [sm=thumbup.gif].So many thanks for taking the time to share this vid !

Landing is so fast, aren't you sure you have too forward a cg ?? You should be able to flare it much more

I think your reinforcments are pretty good, very high G turns were performed... take care, a friend of mine had his wings folded after the tenth flight or so...
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Old 09-11-2006, 08:46 PM
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Default RE: Shrike 10 on OS.32SX

nexxa - I am thinking about building the same frame with a .28 Magnum (stock muffler at this time)- any suggestions -
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Old 09-11-2006, 11:17 PM
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nexxa
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Default RE: Shrike 10 on OS.32SX

I not the best guy here to give tips on building! I always do my kit on the heavy side. I always put to much wood, epoxy and CA. I learn to fly alone, after breaking plane over and over; I start to make it so strong they can! break anymore!

But, I think everybody will agree, put a carbon fiber tube in the wing. It will reinforce this weak part. Folding a wing in a high G turn is bad. You can put some 3/8” square balsa spare in the stab to give it some rigidity and laminate these rudders with 1/32 balsa, they are so thin and fragile. You can put back by a 1/4" or ½” the firewall; It will be easiest to balance the model. Me I put back the firewall by 1", it was too much.

Ailerons throw are very important, I only use 1/8” up and down ailerons. The fist flight it was set to ¼”, and It was practically impossible to make it turn without making 2 rolls at the same time!

A good example of are strong are my plane. Check this small video.

[link=http://207.96.235.218/videos/sebastien/shrike_crash.wmv]Test flight 2[/link]

For sure I make a good checkup after to see if something was broken. Just broke the prop and spinner. The first one, I take off full throttle. The engine thrust make the plane roll left a bit. On the second try, I try it half throttle, it was just not enough!!! I decide to kill the engine and try to land it before hitting somebody by trying to recover my bad take off.
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Old 09-11-2006, 11:33 PM
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Default RE: Shrike 10 on OS.32SX

Thanks all.

Yes, it was on maiden a little bit nove heavy. But the landing speed is due to my inexperience with this plane.
I made other flights with it and now I'm able to land it on the center of the field, not 3 miles away!

I will post an other video this week. Now I have some real good pictures to show.... just need time to edit it.
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Old 09-12-2006, 03:03 AM
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Default RE: Shrike 10 on OS.32SX

nexxa , the video is great , it inspired me to build one, so i am placing my order for 1 right now

what header are you using on the engine

if it is a macs, is it the short or standard header

thanks
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Old 09-12-2006, 06:58 AM
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Default RE: Shrike 10 on OS.32SX

Nexxa - thanks for info and help - I think I am going for it - won't be as fast but should be fun

thanks

coop
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Old 09-12-2006, 07:56 AM
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Default RE: Shrike 10 on OS.32SX

izzy - I'm using this:

The Header is a MAC Header # MAC2340 (.20 to .32)
The Tune pipe is a MAC Pipe # MAC1120 (.19 to .25)
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Old 09-12-2006, 03:13 PM
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Default RE: Shrike 10 on OS.32SX

thanks nexxa

by the way i read in the shrike club thread, that someone built a shrike 10 with os 32 , but reduced the height of the ribs throughout buy 1/8 each side to get a thinner wing and more speed

i am ordering my shrike 10 as we speak, this thread has made me drool
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Old 09-13-2006, 07:16 AM
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Default RE: Shrike 10 on OS.32SX

That is a great looking bird
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Old 09-14-2006, 12:05 AM
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Default RE: Shrike 10 on OS.32SX

Jizzam yo! That is one of the best looking Shrikes I have EVER seen! Beautiful!!!

Trim that header-- [X(]
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