Announcement

Collapse
No announcement yet.

Is there any reason to keep my primer?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Taylorcrafty
    replied
    Confirmed that my cylinders don't have the holes for cylinder-prime.




    Click image for larger version

Name:	IMG_20200223_110348.jpg
Views:	81
Size:	168.7 KB
ID:	186403

    Leave a comment:


  • astjp2
    replied
    You can always move it to a jug if you have the ports for it I did it to the back 2 cylinders, makes for easy hand propping. Do you know what your jugs have actually or are you guessing? Primers work and really help in cool temperatures. Tim
    Last edited by astjp2; 02-10-2020, 15:42.

    Leave a comment:


  • PA1195
    replied
    I'd be surprised if there are no primer holes in the cylinders. Not all have them but parts manuals list them for C-85 and up. I commented on Supercub about a 4-point system and why, plus the manifold pressure gauge driven by the singe port in the spider. They do make for an easier start when cold and can keep the engine running when the carb has problems if needed.

    Gary

    Leave a comment:


  • Taylorcrafty
    replied
    Originally posted by 3Dreaming View Post

    That is correct. His picture is not even showing a Taylorcraft, it shows something with spring gear and a nose wheel.
    Picture was just a good one I pulled off the internet of the same setup. Aircraft is a F19.

    Leave a comment:


  • Taylorcrafty
    replied
    Originally posted by N96337 View Post
    I'd keep the primer but move the nozzles to the cylinders.
    John
    That is what I would prefer, but I don't think my cylinders have the pipe threaded hole to accept the primer nozzles.

    Leave a comment:


  • Taylorcrafty
    replied
    Originally posted by Robert Lees View Post
    Is there any reason why you should wish NOT to keep it?
    Extra stuff that doesn't do anything is always bad. Biggest liability is the chance of a fuel leak between gascolator and pump.



    Originally posted by Robert Lees View Post
    Is keeping the primer doing the engine any harm?
    Not currently, but they often start slowly leaking, causing a rich mixture.


    Originally posted by Robert Lees View Post
    Is the extra weight of it concerning you?
    No, but it's always nice to get rid of extra stuff.


    Originally posted by Robert Lees View Post
    Is it a certified requirement?
    It's a part that came with a certified aircraft.



    Leave a comment:


  • 3Dreaming
    replied
    Originally posted by Robert Lees View Post
    Not necessary if there is electric start (think: F19 with electric start, or C150 so equipped). OP has not said what aircraft/engine combination.

    /wait
    That is correct. His picture is not even showing a Taylorcraft, it shows something with spring gear and a nose wheel.

    Leave a comment:


  • Robert Lees
    replied
    Not necessary if there is electric start (think: F19 with electric start, or C150 so equipped). OP has not said what aircraft/engine combination.

    /wait

    Leave a comment:


  • N96337
    replied
    I'd keep the primer but move the nozzles to the cylinders.
    John

    Leave a comment:


  • Robert Lees
    replied
    Is there any reason why you should wish NOT to keep it? Is keeping the primer doing the engine any harm? Is the extra weight of it concerning you? Is it a certified requirement?

    Many questions of which enquiring minds need to know the answers!

    Rob

    Leave a comment:


  • 3Dreaming
    replied
    If you have an electric starter it might be okay, but if not keep the primer. I have seen times when the accelerator pump was not enough to get the engine started.

    Leave a comment:


  • Woody
    replied
    I agree it will work with the accelerator pump, however the primer nozzle gives a finely atomized spray that will not run out the airbox. The accelerator pump puts mostly liquid in that runs to the bottom of the airbox.Your preference.

    Leave a comment:


  • Taylorcrafty
    started a topic Is there any reason to keep my primer?

    Is there any reason to keep my primer?

    It seems like the primer on the O-200 injects fuel at the same point as the accelerator pump...

    Made me think, why not just remove the primer and use the accelerator pump?

    I can't see an increased risk of induction fire... any thoughts?

    Thanks

    Click image for larger version

Name:	0cwyYqoYNsiGciiQvAFbHY8XQZFzLgEZ6ycOYP2xhacxMVetgFZJ2mJB78vVm6pnMcvKGUJRNk_WAlOfUqI7J1WJO2bb8-Qxw5JSNfblSgD1MTZv5KyLIs5g24Aym4g_.jpg
Views:	252
Size:	28.4 KB
ID:	186291
Working...
X