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 balance

Reply

Old 07-30-2006, 05:42 PM
  #1  
live_2_crash
Junior Member
Thread Starter
My Feedback: (84)
 
Join Date: Aug 2003
Location: hardy, KY
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Shrike 10 balance

i just got a shrile 10 and would like to know if anyone knows the ballance point on it and if an os 15 2 stroke or a os 26 surpass would be better for this thanks in advance for all the replies
live_2_crash is offline  
Reply With Quote
Old 08-14-2006, 11:23 PM
  #2  
johnc1go
Senior Member
My Feedback: (9)
 
Join Date: Dec 2002
Location: South Bend, IN
Posts: 145
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

go with the os .15 two stroke. I have a shrike .10 and they are naturally nose heavy. Besides, you want RPM for speed not torque. I don't think a 4 stroke is well suited to a plane like a shrike. Keep it light, I placed my battery pack behind the rear bulkhead before I sheeted the fuselage. I also used an OS .15CVA for power. I also used mini servos and I'm coming in at just 2 lbs. I'm getting 17500 rpm on the engine and soon going to be replacing the stock muffler w/a mac's tuned pipe and header. It's a nice plane, flies like it's on rails.
johnc1go is offline  
Reply With Quote
Old 08-15-2006, 04:43 AM
  #3  
acr007
 
Join Date: Dec 2003
Location: Colliers WoodLondon, UNITED KINGDOM
Posts: 126
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

Yea Johns got it right.

I even put a AP15 in a Shrike 1/2a.. man it was fast for such a small plane, and when vertical from hand launch.

The plan c of g is a good starting place. When I built my 1/2 a i pushed the fire wall back/in 1/2 an inch and had to put the battery in the tail section before sheeting and it ws still nose heavy. Just added more elevator movement at higer rates for landing. My next version will have a bigger battery to bring CofG back 5 mm to the ideal spot. Hope that helps.
acr007 is offline  
Reply With Quote
Old 08-15-2006, 09:57 AM
  #4  
tmproff
My Feedback: (5)
 
tmproff's Avatar
 
Join Date: Apr 2002
Location: Humble, TX
Posts: 1,060
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

They say the ultimate engine for the Shrike .10 is an OS .35 + tuned pipe. I have the Shrike .10 with an OS .25 on it and it is running around 120 I believe. The Shrike does build nose heavy, so I moved the firewall back about 1/4 of an inch and the CG is fine.
tmproff is offline  
Reply With Quote
Old 08-15-2006, 12:58 PM
  #5  
pdxpaul
Senior Member
My Feedback: (1)
 
Join Date: Mar 2002
Location: Portland, OR
Posts: 135
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

I moved the firewall 1" back from plan on my Shrike 10, and it balanced with an OS 15 without lead. I since changed to a GMS 32 and pipe, which required a 1/2 oz. on the tail, with a 720 NiMH in the rear of the radio compartment. The performance with the LA 15 was less than what I wanted, so I went to the .32. I am still experiementing with props, but I like the APC 8x7 sport and a 7.4x8 APC Q40 prop. I will try to attach a photo. Paul
Attached Thumbnails Click image for larger version

Name:	Ig13819.jpg
Views:	10
Size:	54.0 KB
ID:	507773   Click image for larger version

Name:	Mk27008.jpg
Views:	8
Size:	48.8 KB
ID:	507774  
pdxpaul is offline  
Reply With Quote
Old 08-15-2006, 08:43 PM
  #6  
johnc1go
Senior Member
My Feedback: (9)
 
Join Date: Dec 2002
Location: South Bend, IN
Posts: 145
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

Hey Paul,
Nice looking Shrike, here's a pic of mine. I just got a Mac's pipe and header in the mail, soon to go on my plane.
Attached Thumbnails Click image for larger version

Name:	Sq45597.jpg
Views:	11
Size:	48.3 KB
ID:	507950  
johnc1go is offline  
Reply With Quote
Old 08-15-2006, 09:43 PM
  #7  
Mike Connor
Senior Member
My Feedback: (5)
 
Mike Connor's Avatar
 
Join Date: Jan 2002
Location: Tulsa, OK
Posts: 2,025
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance


ORIGINAL: live_2_crash

i just got a shrile 10 and would like to know if anyone knows the ballance point on it ..........
The initial CG point is 4 1/2" measured back from the leading edge on the fuselage.
Shrike Control Throws
Ailerons 1/8 to 3/16
Elevator 1/4 to 3/8

Mike Connor is offline  
Reply With Quote
Old 08-15-2006, 09:49 PM
  #8  
pdxpaul
Senior Member
My Feedback: (1)
 
Join Date: Mar 2002
Location: Portland, OR
Posts: 135
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

Thanks, John. Yours is very nice, and I am sure scoots along nicely with that CVA. It took me awhile to figure out how to mount the nylon tuned pipe support, because it's in the middle of the wing. I finally built a stansion which bolts to the fuse side. Let me know if you would like a pic. Paul
pdxpaul is offline  
Reply With Quote
Old 08-16-2006, 09:59 AM
  #9  
johnc1go
Senior Member
My Feedback: (9)
 
Join Date: Dec 2002
Location: South Bend, IN
Posts: 145
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Shrike 10 balance

Thanks Paul,
I would appreciate any pic or pics you may have your tuned pipe mounting setup.

New Pic. My friend caught my shrike in action. He used a high resolution digital camera w/a large zoom lens. I had just leveled off after a shallow dive at full throttle.
Attached Thumbnails Click image for larger version

Name:	Ge95722.jpg
Views:	7
Size:	78.5 KB
ID:	508151  
johnc1go is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service