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Is there any reason to keep my primer?
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I had a 1982 F-21 with O-235 L2c and it came with a primer, the plane has a starter and day/night VFR. I always used the primer to start if it had been shut down for more then 60 min. It was on the plane from the factory so I'm not sure what some people that our tax dollars pay to look at aircraft would think about removing parts from the aircraft ? It is referenced in the POH and parts catalog.
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Confirmed that my cylinders don't have the holes for cylinder-prime.
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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. TimLast edited by astjp2; 02-10-2020, 14:42.
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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
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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.
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Originally posted by N96337 View PostI'd keep the primer but move the nozzles to the cylinders.
John
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Originally posted by Robert Lees View PostIs there any reason why you should wish NOT to keep it?
Originally posted by Robert Lees View PostIs keeping the primer doing the engine any harm?
Originally posted by Robert Lees View PostIs the extra weight of it concerning you?
Originally posted by Robert Lees View PostIs it a certified requirement?
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Originally posted by Robert Lees View PostNot necessary if there is electric start (think: F19 with electric start, or C150 so equipped). OP has not said what aircraft/engine combination.
/wait
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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
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I'd keep the primer but move the nozzles to the cylinders.
John
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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
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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.
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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.
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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
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