Questions and Answers If you have general RC questions or answers discuss it here.

Engine cutout on tight turns

Reply

Old 02-24-2006, 09:23 PM
  #1  
Rflyin
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Apr 2003
Location: Palmyra, MI
Posts: 131
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Engine cutout on tight turns

Hello,
I have a combat plane that loops and turns very tightly. My problem is that the engine will slow or stop completly in these high g manuvers. My fuel tank is uses muffler presure and mounted behind and slightly below center, not ideal I know but I'd like to solve the problem and leave the tank as is. Any ideas would be appreaciated.

Thanks
Rflyin
Rflyin is offline  
Reply With Quote
Old 02-24-2006, 09:41 PM
  #2  
Ed_Moorman
My Feedback: (1)
 
Ed_Moorman's Avatar
 
Join Date: Jan 2002
Location: Shalimar, FL
Posts: 4,059
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Engine cutout on tight turns

You are running too lean for your type of flying. Open your needle up a few clicks and try doing 8 loops in a roll. If you can pull through that many full up loops, you should be OK. I used to run into that in club fun flies where we did multiple loops for time. Had to richen up or lean out and quit.

If you don't stay level very long, maybe raising your tank a little would work. Give it some more fuel head from the g's. I would still not run super lean.
Ed_Moorman is offline  
Reply With Quote
Old 02-24-2006, 10:01 PM
  #3  
Rflyin
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Apr 2003
Location: Palmyra, MI
Posts: 131
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Engine cutout on tight turns

Thanks Ed I'll try it. I generaly set about 300- 500 below peak set with a tach also It won't do it on the first half of the tank.

Rflyin
Rflyin is offline  
Reply With Quote
Old 02-24-2006, 10:04 PM
  #4  
Gringo Flyer
Senior Member
My Feedback: (18)
 
Gringo Flyer's Avatar
 
Join Date: Jan 2004
Location: Formosa, ARGENTINA
Posts: 2,370
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Engine cutout on tight turns

I agree w Ed , sounds like a lean run, especially if its fine on the first half of the tank
Gringo Flyer is offline  
Reply With Quote
Old 02-25-2006, 08:36 AM
  #5  
Ed Smith
Senior Member
 
Join Date: Dec 2001
Location: Brantford, ON, CANADA
Posts: 3,305
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Engine cutout on tight turns

If you are using muffler pressure only then the fuel is probably slopping around in the tank. Is it possible to fit a bladder tank? A pressure bladder tank will eliminate your problem.

Pictures show a typical bladder tank installation. Noticeable is no muffler pressure.

Ed S
Attached Thumbnails Click image for larger version

Name:	Ca82377.jpg
Views:	4
Size:	103.6 KB
ID:	415206   Click image for larger version

Name:	Up49279.jpg
Views:	5
Size:	75.9 KB
ID:	415207  
Ed Smith is offline  
Reply With Quote
Old 02-25-2006, 08:47 AM
  #6  
Rflyin
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Apr 2003
Location: Palmyra, MI
Posts: 131
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Engine cutout on tight turns

Its a Jett 6oz bubbleless and I need to have full throttle control so a presure bladders out.
Rflyin 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