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Cox Engine of The Month
Cleaning tip for tanked Cox engines
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Cleaning tip for tanked Cox engines
When I cleaning an old Cox engine I always make sure to clean the tank vents as well as the usual items. An engine that is "gummed up" with castor will often have clogged tank vents which makes the tank difficult to fill or vent excess fuel from the overflow.
A "pretty" engine won't function well with clogged tank vents.
A "pretty" engine won't function well with clogged tank vents.
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
Good tip but also remember the engine won't even run at all if the vents are really gummed up.
Re: Cleaning tip for tanked Cox engines
Good advice.
I got a PeeWee a couple weeks ago, and I was told it ran great. I opened it up and the pickup tube was hardened and full of dirt, the venturi clogged, and when I put fuel in it (before opening) it all leaked out of the crankcase. Really old gasket.
Guess he ran it 30 years ago.
I got a PeeWee a couple weeks ago, and I was told it ran great. I opened it up and the pickup tube was hardened and full of dirt, the venturi clogged, and when I put fuel in it (before opening) it all leaked out of the crankcase. Really old gasket.
Guess he ran it 30 years ago.
Re: Cleaning tip for tanked Cox engines
nitroairplane wrote:Good tip but also remember the engine won't even run at all if the vents are really gummed up.
Indra:
Yes I realize that but how many "newbs" here do? I've never seen tank vent cleaning mentioned in any "trouble-shooting" guide. Have you?
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
No but then again it is assumed that the vents are clear to fill up the tank.
Re: Cleaning tip for tanked Cox engines
"Assume" is a dangerous word. It combines "ass", "u" and "me".
Not much reason to "assume" anything in aviation, is there?
Not much reason to "assume" anything in aviation, is there?
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
SuperDave wrote:"Assume" is a dangerous word. It combines "ass", "u" and "me".
Not much reason to "assume" anything in aviation, is there?
Apart from pull back to go up
.049
If you are a flyer then front induction engines are much better. No reeds and leaking self contained tanks. A good TD is hard to beat if running Cox. Beam mounts are easy to make and install engine. Reedies work but more to go wrong and if they sit need to be cleaned and stored well. Many Cox engines have sat idel for a long time.
Dan
Dan
Last edited by dankar04 on Tue Dec 06, 2011 12:58 pm; edited 4 times in total (Reason for editing : updated)
dankar04- Platinum Member
- Posts : 716
Join date : 2011-08-13
Age : 77
Location : Tucson,Az.
Re: Cleaning tip for tanked Cox engines
Apart from pull back to go up [/quote]
Only works if you have altitude and airspeed.
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
...kinda like running out of altitude and ideas at the same time :^ (...
Re: Cleaning tip for tanked Cox engines
SuperDave wrote:
Apart from pull back to go up
Only works if you have altitude and airspeed.[/quote]
Usually
Re: Cleaning tip for tanked Cox engines
microflitedude wrote:Good advice.
I got a PeeWee a couple weeks ago, and I was told it ran great. I opened it up and the pickup tube was hardened and full of dirt, the venturi clogged, and when I put fuel in it (before opening) it all leaked out of the crankcase. Really old gasket.
Guess he ran it 30 years ago.
Well, Dude: If you sat unused for thirty years, how well would YOU perform? (nothing persoanal mind you)
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
I think i would have just enough power to get to the bathroom.
Re: Cleaning tip for tanked Cox engines
If a #1 is your need the plane's "relief tube" will do.
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: Cleaning tip for tanked Cox engines
SuperDave wrote:"Assume" is a dangerous word. It combines "ass", "u" and "me".
Not much reason to "assume" anything in aviation, is there?
Only to assume that "Anything that can conceivably go wrong, invariably will"!
(Murphy's 1st. Law)
Last edited by Ivanhoe on Tue Dec 06, 2011 2:03 pm; edited 1 time in total
Ivanhoe- Diamond Member
- Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland
Re: Cleaning tip for tanked Cox engines
SuperDave wrote:If a #1 is your need the plane's "relief tube" will do.
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