160 FX not pullin it  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> 160 FX not pullin it
Page: [1]

Login
Message << Older Topic   Newer Topic >>
160 FX not pullin it - 10/8/2004 12:20:44 AM   
ep124


 

Posts: 93
Joined: 9/12/2003
From: ontario, NY, USA
Status: offline 		Ok, here's the run down. I have a Creek Hobbies Giles 202 think a 160 FX in it. The plane weighs in at about 11.2 lbs. The problem I'm having is that the plans is hovering at near full throttle, maybe 90%, about 3 clicks from full, and pull out needless to say is very week. I've checked out every thing that i could think of, the carb goes full open at full stick, I don't have any expo in it that would mess with it, ect. here's the set up...

11.2 lbs giles
160 FX
18 X 6 zinger (not pro zinger)
stock muffler
10% power master
and it's tackin at about 8,100 RPM on a good day

Ok so i put 8,100 rpm with a zinger prop into a thrust calc. i got and it said i should be pullin about 19.5 lbs. Now if that's true then shouldn't i be hovering at about 60% stick? oh and i forgot to mention that i'm about 400ft above sea level. So do any of you guys kno wut's goin on and how i can get more power out of this motor? any info would be appreciated greatly.

Thanx,
Eric
       Post #: 1

RE: 160 FX not pullin it - 10/8/2004 2:34:33 AM   
sport10


 

Posts: 715
Joined: 12/31/2001
From: Loxley, AL, USA
Status: offline 		Your rpm seems to be way down. Exactly how rich are you running this motor? It is possible to false peak this engine rich from my experience with it. You should be getting around 9000 rpm with a 18x6 prop on 10% fuel. There is a flat spot in the high speed needle response where you might accidently think is the peak but keep turning in and the rpm will increase greatly. Try this out and let me know the results. Also you might want to run some castor if you are using a full synthetic mix.

(in reply to ep124)
       Post #: 2

RE: 160 FX not pullin it - 10/8/2004 3:12:05 AM   
PlaneKrazee



Posts: 3583
Joined: 5/15/2002
From: Westerly, RI, USA
Status: offline 		How was the engine broke in?

I can get that rpm with a Mejzlik 20X6 and 9200 on an APC 18X6 with 10% nitro.

_____________________________

KB1DTB
AMA11123

(in reply to sport10)
       Post #: 3

RE: 160 FX not pullin it - 10/8/2004 3:54:27 AM   
ep124


 

Posts: 93
Joined: 9/12/2003
From: ontario, NY, USA
Status: offline 		I'll try puttin the needle in more, it does seem pretty far out. And I broke the engine in on the same 10% and 18 X 6 prop for about a gallon b4 goin in the air. Then i flew it calm until i'd gone throught about a gallon in the air. And then i started openin it up alittle and have been flyin it for about maybe anther gallons worth after that.

(in reply to PlaneKrazee)
       Post #: 4

RE: 160 FX not pullin it - 10/8/2004 4:40:25 AM   
Warren


 

Posts: 390
Joined: 10/26/2002
From: Alpine, CA, USA
Status: offline 		Eric,

Stock Zinger props are really sad. Get the pro, or the APC 18x6 and I think you'll see a lot of difference in performance.

The Zinger Pro spools up quicker, but the APC puts out more thrust.

< Message edited by Warren -- 10/12/2004 8:56:59 PM >

_____________________________

Warren

(in reply to ep124)
       Post #: 5

RE: 160 FX not pullin it - 10/8/2004 8:27:03 AM   
jaka


 

Posts: 4657
Joined: 12/11/2001
From: Upplands Vasby, SWEDEN
Status: offline 		Hi!
Try getting the Menz wooden props! Much better than ordinary Zinger props.

Regards!
Jan K
Sweden

(in reply to Warren)
       Post #: 6

RE: 160 FX not pullin it - 10/8/2004 9:24:59 PM   
ep124


 

Posts: 93
Joined: 9/12/2003
From: ontario, NY, USA
Status: offline 		ok thanx guys... i'll see what i can do for another prop also.

(in reply to jaka)
       Post #: 7

RE: 160 FX not pullin it - 10/10/2004 10:26:13 PM   
ep124


 

Posts: 93
Joined: 9/12/2003
From: ontario, NY, USA
Status: offline 		Ok, yesterday i tryed to run it leaner and it didn't work . It went from 8400 to 8490 then died. I tryed 3 times and figured it wasn't workin and i shouldnt hurt my engine by tryin to run it to lean. Thanx for the idea though. I'll try a new prop when i get the chance.

(in reply to ep124)
       Post #: 8

RE: 160 FX not pullin it - 10/12/2004 8:47:37 PM   
ep124


 

Posts: 93
Joined: 9/12/2003
From: ontario, NY, USA
Status: offline 		BO YA! I problem solved! Warren was right. I threw away the regular zinger prop and put the pro on it (still 18x6) and the rpm whent to 9250! amazing wut a prop change will do!

Thanx for every thing!,
Eric

(in reply to ep124)
       Post #: 9

RE: 160 FX not pullin it - 11/4/2004 3:57:51 AM   
laser101


 

Posts: 2
Joined: 5/3/2004
From: , PA, USA
Status: offline 		hey i was wondering ifr any of u gentlemen could tell me the balance point on the giles 3d from creek hobbies.

Thanks,
Tom

_____________________________

I Love My Funtana

(in reply to ep124)
       Post #: 10

RE: 160 FX not pullin it - 11/4/2004 4:04:17 AM   
JoeAirPort



Posts: 7315
Joined: 8/11/2003
From: Milwaukee, WI, USA
Status: offline 		You know that might not be enough prop. You might want to try the Zinger Pro 18-8. That RPM is kind of high. I just saw a post that said it can turn bigger props. The normal Zingers load the engine down way more than the Pro's due to the large paddles (on the normal ones). the Pro's are way better props IMO. I'd use a Pro 18-8.

quote:

ORIGINAL: ep124

BO YA! I problem solved! Warren was right. I threw away the regular zinger prop and put the pro on it (still 18x6) and the rpm whent to 9250! amazing wut a prop change will do!

Thanx for every thing!,
Eric


_____________________________

Joe AP

(in reply to ep124)
       Post #: 11

RE: 160 FX not pullin it - 11/12/2004 3:58:49 AM   
Ed


 

Posts: 1812
Joined: 12/5/2001
From: Bemis, , USA
Status: offline
quote:

ORIGINAL: ep124

BO YA! I problem solved! Warren was right. I threw away the regular zinger prop and put the pro on it (still 18x6) and the rpm whent to 9250! amazing wut a prop change will do!

Thanx for every thing!,
Eric


Ya gotta be careful here ...... Just because you are making more RPM, doesn't mean that you are making more thrust . Don't get so hung up on RPM that you forget that Thrust is still the bottom line !

> Jim

(in reply to ep124)
       Post #: 12

RE: 160 FX not pullin it - 6/29/2005 12:02:41 PM   
walshy


 

Posts: 24
Joined: 3/24/2003
From: Bundaberg, AUSTRALIA
Status: offline 		I get fantastic results with both Master Airscrew Scimitar 19x8 wood and the Top Flight Power Point 18x10 wood. ( much better than zingers ) I agree thrust is king not RPM. 160's can swing a big prop, an 18 x6 is just not enough wood....try the 19x8 and see for yourself.

(in reply to Ed)
       Post #: 13

RE: 160 FX not pullin it - 6/29/2005 3:36:28 PM   
Flyer95


 

Posts: 1000
Joined: 9/21/2004
From: STOCKHOLM Akersberga, SWEDEN
Status: online 		Hi,
If the propchange is not enough then you would probably need another muffler which is less restrictive, or if you can remove any chambers in the stock muffler and test for your self. It would probably get louder but stronger too . A quiet tuned exhaust system would also raise your rpms a few hundreds more. Good luck/Amir

(in reply to ep124)
       Post #: 14

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> 160 FX not pullin it
Page: [1]





Jump to: