Club 80-90 Forums

toomanytoys wrote:I would also suggest that you speak with Steve at Gasure as he rebiulds the solexes and may well have a stock of good ones (the part you need) ............

good idea will do
thanks for your help

irishkeet,
At the risk of getting shot down by Simon, (toomanytoys), got my tin hat at the ready!! one of Loctites many special adhesives, (select the right one mind!! google for a weblink) correctly applied, and assisted by the judicial application of a MBH (moderately big hammer).......... only joking , a clamp overnight, might ensure the continued bonding of the two errant portions, of your, fuel pump did you say it was? After all airplanes (aeroplanes to those of the old school) are stuck together these days, and generally speaking, hold together most of the time. A new pump will probably be relying on just the same interference fit in the area, quick and easy for assembly, not built to last. It really should be engineered with the same care as a brake pipe connection to a caliper/master cylinder/brake cylinder, but the cost of manufacture was more important than safety it seems.
Mike

Grun wrote:irishkeet,
At the risk of getting shot down by Simon, (toomanytoys), got my tin hat at the ready!! one of Loctites many special adhesives, (select the right one mind!! google for a weblink) correctly applied, and assisted by the judicial application of a MBH (moderately big hammer).......... only joking , a clamp overnight, might ensure the continued bonding of the two errant portions, of your, fuel pump did you say it was? After all airplanes (aeroplanes to those of the old school) are stuck together these days, and generally speaking, hold together most of the time. A new pump will probably be relying on just the same interference fit in the area, quick and easy for assembly, not built to last. It really should be engineered with the same care as a brake pipe connection to a caliper/master cylinder/brake cylinder, but the cost of manufacture was more important than safety it seems.
Mike

Hi Grun

Sounds like a good idea if nothing else it may hold until I can get to Steve.

irishkeet,
Yeh, I used to be into Helicopter maintenance, and the control rods on some of our machines had threaded stainless steel fork ends which were screwed into light alloy tubes on the smaller (5 seat) choppers and steel tubes on the larger (15 seat) ones. There was no locking device on the lower ends of the tubes, and the fork ends were cleaned with MEK (Methly Ethyl Ketone).... very much like cellulose thinners, and 'A4 Metalset' was applied before threading the ends in. The only way to remove them at 1200 hours of flight for overhaul was to use the appropriate heat to destroy the bond.
A4 Metalset was just a two part epoxy (mid grey in colour due to a filler to aid even application IIRC) Those tubes carried a heavy reciprocating load and were vital to flight safety. Last link between the hydraulic flight controls and the rotor blades themselves. The bond was so effective that the steel tube itself would fail (twist and distort) before the bond would let go, if attempting to unscrew the fork end without the heat having been applied. Can't vouch for petrol resistance of epoxy, should be something that will do a better job than just jamming the brass outlet into the soft, (is it some kind of zinc based alloy?) body though.

PS Just found the A4 Metalset site and here is a quote Applications
include stopping leaks in pipes, valves and tanks (i.e. car gas tanks), bonding like and unlike surfaces, Here is their site I am not saying that is is any better than any other epoxy, but there are some figures to compare.

Mike

wheres that shot gun........


If you can find a product that says it can stck it back together and it doesnt mind petrol etc, then it could work..
Some of the loctite special application stuff is rather costly though.. I know I have some super studlock and it was 20 quid for a 10ml tube....

Simon wrote

Some of the loctite special application stuff is rather costly though.. I know I have some SUPER STUDLOCK and it was 20 quid for a 10ml tube....

That sounds like the sort of thing that often turns up unexpectedly when I am innocently 'Googling' for something, pumps that are claimed to enlarge appendages etc.

Mike