Today's Message Index:
----------------------
1. 04:24 AM - Re: Fuel Venting (Robert de Vries)
2. 06:50 AM - Re: Fuel Venting (Etienne Verhellen)
3. 07:05 AM - Re: No Title (Scooter)
Message 1
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| Subject: | Re: Fuel Venting |
Hi Don, Dennis, rest,
Maybe this helps:
We have our '86 RedYak 52 since 1996 and off course the same fuel
venting problem; especially in direct sun heat with full capped tanks
some 5-10 liters will syphon/vent.
Preferably with someone smoking a fag next to the Yak in an airshow
static display......
So I 'engeneered' a very simple and cheap 'solution', after trying
some other tricks that did not work:
-take tank cap s home and drill an, e.g. M4 or M5 hole in it, then
cut thread in it to fit M4 or M5 screw, I used surplus belly screws.
-Take your Dremel tool and slice a partial lenghtwise (so
perpendicular to thread) slit in screws.
-unscrew partly when not flying, air and exess fuel will escape
through small cut in screw.
-when checking tanks before flight fasten screw, when forgotten: fool
proof; only very small amount of fuel will escape during inverted
flight or because of underpressure over wing.
After this mod our problem was solved; only little venting from cap
due overpressure; no more ( EURO 2,3/lit!!!!!) 5-10 lit's syphononing
via center vent under belly.
Total cost: NIL
Time: 2 hours
try it; if it does not work: leave screw tight and no harm done to cap.
fly safe:
Sad to read about the Blues crash, we had them over here at
Leeuwarden airbase in Holland last summer and I had a few brewskies
with the hero's.......
Robert de Vries
Van Struykstraat 2
2203 HE Noordwijk
Holland,Europe
tel/fax:+31-71-3619730
mobile:+31-6-51792046
rob@redyak.demon.nl
www.redyak.tk
skype:redyak
Message 2
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| Subject: | Re: Fuel Venting |
Good Robert.
We 'll try that on our 52.
Hope to see you guys in Zoersel for some formation flying.
Cheers,
Etienne.
http://www.aerobatics.org.uk/photos/profile.php?uid=84
_____________________________________________________________________________
Sujet : Re: Yak-List: Fuel Venting
Hi Don, Dennis, rest,
Maybe this helps:
We have our '86 RedYak 52 since 1996 and off course the same fuel
venting problem; especially in direct sun heat with full capped tanks
some 5-10 liters will syphon/vent.
Preferably with someone smoking a fag next to the Yak in an airshow
static display......
So I 'engeneered' a very simple and cheap 'solution', after trying
some other tricks that did not work:
-take tank cap s home and drill an, e.g. M4 or M5 hole in it, then
cut thread in it to fit M4 or M5 screw, I used surplus belly screws.
-Take your Dremel tool and slice a partial lenghtwise (so
perpendicular to thread) slit in screws.
-unscrew partly when not flying, air and exess fuel will escape
through small cut in screw.
-when checking tanks before flight fasten screw, when forgotten: fool
proof; only very small amount of fuel will escape during inverted
flight or because of underpressure over wing.
After this mod our problem was solved; only little venting from cap
due overpressure; no more ( EURO 2,3/lit!!!!!) 5-10 lit's syphononing
via center vent under belly.
Total cost: NIL
Time: 2 hours
try it; if it does not work: leave screw tight and no harm done to cap.
fly safe:
Sad to read about the Blues crash, we had them over here at
Leeuwarden airbase in Holland last summer and I had a few brewskies
with the hero's.......
Robert de Vries
Van Struykstraat 2
2203 HE Noordwijk
Holland,Europe
tel/fax:+31-71-3619730
mobile:+31-6-51792046
rob@redyak.demon.nl
www.redyak.tk
skype:redyak
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Message 3
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Here's a link with some drawings for a fod cover. http://www.yakuk.com/MPD.htm
The intended material is ceconite secured by seam cement.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=108447#108447
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