YS Engines Support Direct support from YS Performance Engines by Dave Shadel

Priming 140 DZ

Reply

Old 06-25-2003, 02:41 PM
  #1  
3D Joy
Senior Member
Thread Starter
 
3D Joy's Avatar
 
Join Date: Dec 2002
Location: , QC, CANADA
Posts: 1,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Priming 140 DZ

What is the best way to get fuel to the pump on the first start of the day? The best way I found is turning the engine with the starter for a good 10 to 15 seconds (kinda drains the field box battery in a hurry) or choking like a gas engine (flipping the prop by hand so the intake valve moves and pumps) but it is a very long process.

My tank is on the CG on a 25% CAP 232 so it is about at 10 to 12 inches away from the engine pump.

I would also like to know if it can diminish performance if I only use a tube of about 7 inches long with a simple header from central hobbies. I am wondering if it can cause some restriction and reduce performance.

This is a great engine but it seems to lack power from what I see on the net. It idles incredibly at 1700 or 1800 RPM.

Powermaster 20% low viscosity, OS #F plug, APC 18 x 8.

Thanks for help.
3D Joy is offline  
Reply With Quote
Old 06-25-2003, 03:08 PM
  #2  
Dave Shadel
Senior Member
 
Join Date: Apr 2002
Location: Gardnerville, NV
Posts: 5,385
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Priming 140 DZ

You are priming it the right way.
I think you have too much prop for the 20% fuel. Either go to 30% heli fuel or down to an 18x6.
A header tank won't hurt, but why go to the extra hassle?
Dave Shadel is offline  
Reply With Quote
Old 06-25-2003, 05:37 PM
  #3  
rcprecision
My Feedback: (6)
 
rcprecision's Avatar
 
Join Date: Jan 2002
Location: Cypress, TX
Posts: 408
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default DZ Priming

Be careful turning the engine over for that length of time that may flood the engine. My experience has been with both DZs I am running is if the engine has not run for several days I open the throttle to full and the needle 3 turns from the running position turn with the electric starter for only 2-3 seconds reset needle attach the glo driver and engine should start. If the engine was recently run follow the same steps except I leave the needle at the running position when priming.

Radio South makes a glo driver that indicates when engine is flooded and increases voltage to the plug to burn off excess fuel.
rcprecision is offline  
Reply With Quote
Old 06-25-2003, 05:59 PM
  #4  
3D Joy
Senior Member
Thread Starter
 
3D Joy's Avatar
 
Join Date: Dec 2002
Location: , QC, CANADA
Posts: 1,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Priming 140 DZ

How about my exhaust setup ?? Is that correct to run that long a tube (7") as an exhaust system.
3D Joy is offline  
Reply With Quote
Old 06-25-2003, 06:53 PM
  #5  
Dave Shadel
Senior Member
 
Join Date: Apr 2002
Location: Gardnerville, NV
Posts: 5,385
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Priming 140 DZ

The exhaust should be OK as long as the tubing diamater isn't too small.

Glen- Thanks for the heads up on this.

Good Luck at the NATS!
Dave Shadel 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