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Old May 20, 2012, 10:38 PM
Say no to interfierence!!
John Campbell's Avatar
United States, OR, Terrebonne
Joined Mar 2005
49 Posts
F27-C busted into a dozen chunks. 3C 2200 LiPo went up in smoke

This thing was modded to 100+mph. Flew it for 5 years often...
I was wondering if anyone might have an idea on what I should do next.
A. Hold out and purchase a PNP F27-Q (the full size one) ≈ $184.00
B. Parts and pieces needed to install servos/flaps, paint, and complete assembly ≈???
C. Hope for a used PNP F27-C to POP up at a reasonable price. ≈???
D. Sell all these aftermarket parts... ≈???

Feel free to share your opinion,
Thanks,
John
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Old May 20, 2012, 11:51 PM
ICrashRCs
United States, TN, Memphis
Joined Jun 2011
1,196 Posts
B - no question
cheap cheap cheap

Maybe there is one question.
Do you want to fly for another 5 years often?
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Old May 21, 2012, 12:21 AM
Say no to interfierence!!
John Campbell's Avatar
United States, OR, Terrebonne
Joined Mar 2005
49 Posts
Quote:
Originally Posted by IFlyRCs View Post
B - no question
cheap cheap cheap

Maybe there is one question.
Do you want to fly for another 5 years often?
What do you think all the parts and peaces mentioned in "b" would cost?$$$
I surly do want to fly often for atleast 5years ...
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Old May 21, 2012, 07:58 AM
ICrashRCs
United States, TN, Memphis
Joined Jun 2011
1,196 Posts
If you're saying all the parts to build a new stock C model body, it's around $60.
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Old May 22, 2012, 05:43 AM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
Joined Jul 2010
2,285 Posts
The Jet 450 seems to be workin' just fine. I couldn't get a good speed run past my POV for various reasons (sun, wind, other fliers) but it's definitely spry.

Stryker w/ Park 450 Jet motor - onboard video (5 min 30 sec)
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Old May 26, 2012, 04:16 AM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
Joined Jul 2010
2,285 Posts
I'm gonna go to the 5x5 prop next time which should give me bunches more speed at about the same amps as my 6x3.
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Old May 26, 2012, 07:44 AM
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cjbucher's Avatar
Raleigh, NC
Joined Sep 2004
2,568 Posts
Quote:
Originally Posted by mclarkson View Post
I'm gonna go to the 5x5 prop next time which should give me bunches more speed at about the same amps as my 6x3.
You'll be seriously disappointed. The APC 5x5 is a horrible prop especially for the Stryker. Try a 5.5x 4.5

Or get both and compare for yourself. The thrust on the 5x5 is really poor.
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Old May 26, 2012, 09:49 AM
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THESANDMAN's Avatar
United States, NY, New York
Joined Oct 2010
1,640 Posts
Quote:
Originally Posted by John Campbell View Post
This thing was modded to 100+mph. Flew it for 5 years often...
I was wondering if anyone might have an idea on what I should do next.
A. Hold out and purchase a PNP F27-Q (the full size one) ≈ $184.00
B. Parts and pieces needed to install servos/flaps, paint, and complete assembly ≈???
C. Hope for a used PNP F27-C to POP up at a reasonable price. ≈???
D. Sell all these aftermarket parts... ≈???

Feel free to share your opinion,
Thanks,
John
considering the fact that things depriciate every year and your talking 5 years of wear n tear, ill give you the money to ship the part to me for free


seriously
if you have kept a stryker for that long . its obivious that you have some liking for stykers , i say built another one . like someone posted you can get al the parts for the c ofr under 60.00
i say dont sell the parts you can always use them on another project even if its not a stryker . i recycle all my electronics.
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Old May 26, 2012, 02:44 PM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
Joined Jul 2010
2,285 Posts
Quote:
Originally Posted by cjbucher View Post
You'll be seriously disappointed. The APC 5x5 is a horrible prop especially for the Stryker. Try a 5.5x 4.5

Or get both and compare for yourself. The thrust on the 5x5 is really poor.
The EMP 5x5E is the specific recommendation from the Heads Up page for the motor and ESC I'm running.
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Old May 26, 2012, 02:47 PM
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GryphonRCU's Avatar
United States, CA, SF
Joined Mar 2008
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5X5 prop..... What is the static Watts reading?


Gryphon
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Old May 26, 2012, 04:26 PM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
Joined Jul 2010
2,285 Posts
I haven't tested it yet. Jeff's numbers are:
  • EMP 6x3E: 46 ounces of thrust at 44 amps (Currently running. Gets HOT.)
  • EMP 6x4E: 44 ounces of thrust at 45 amps
  • APC 6x4E: 42 ounces of thrust at 46 amps
  • APC 6x5.5E: 38 ounces of thrust at 52 amps. Avoid constant wide open throttle
  • APC 5.5x4.5E: 34 ounces of thrust at 42 amps
  • EMP 5x5E: 30 ounces of thrust at 39 amps.

"We measured a speed of 88 mph in level flight with a Funjet using these components. (450 Jet, 5x5E, 50A EZ Flite ESC)"
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Old May 26, 2012, 04:27 PM
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cjbucher's Avatar
Raleigh, NC
Joined Sep 2004
2,568 Posts
Quote:
Originally Posted by mclarkson View Post
The EMP 5x5E is the specific recommendation from the Heads Up page for the motor and ESC I'm running.
According to Dr Kiwi, the EMP 5x5 is better than the APC 5x5. Worth a shot. Just keep in mind that the Stryker really likes a 6" prop and above for both good climb and speed.

But you can always experiment between the EMP 5x5, the APC 5.5x4.5 and the venerable APC 6x4 sport prop (better than the APC E 6x4) Only a couple bucks each to try out.

--

I see you have some numbers there. As you can see the 5x5 has the lowest thrust. The Stryker has quite a bit of drag to it so even though the 5x5 could be a faster prop, it won't have the thrust to push it faster. (kinda like having a motorcycle engine that can go 150 mph but you put that in a big car, and it won't be able to push the car to 150...)
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Last edited by cjbucher; May 26, 2012 at 04:31 PM. Reason: you posted as I was typing...
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Old May 26, 2012, 04:38 PM
Livin it UP when Im goin DOWN
Arcteryxxx's Avatar
Norway, Telemark, Skien
Joined Feb 2010
4,297 Posts
I promise I will never ever fly a Stryker with a smaller prop than a 6.5xX. Can't remember the last time I flew with a 6incher either..... My point is: the degree of awesomeness with 7 and 8 inch props on a Stryker is like a drug - once tried there's no way back
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Old May 26, 2012, 07:32 PM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
Joined Jul 2010
2,285 Posts
That 6x3E is about to fry my batteries as is!
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Old May 26, 2012, 08:40 PM
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GryphonRCU's Avatar
United States, CA, SF
Joined Mar 2008
3,824 Posts
Instead of APC E 5X5 try some of the other suggestions.

5.25X4.75 APC E
5.5X4.5 APC E

5.2X5.2 Graupner

6X3 getting the motor hot?
at higher speeds it should unload big time...if running hot that is not a good sign.

if you are doing a lot of vertical climbing then the AMPs will stay on high side, and that might explain it.

***I really hope you are using some throttle control and gliding around.


___________________

You can use a good motor.


Gryphon
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