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beto9
2009-06-11, 05:12 PM
Today I was flying my Seagull Sukhoi OS .46 which have been gathering
dust in my "hangar" since I was told to put it away and do not fly it (Alix, remember....?)
Everybody told me to bring it at speed for landing and been doing so with good results...
Anyhow, in the third flight (nine total) I lost my throttle.
First luck: it was stuck at close to idle.
Second luck: there was tall soft grass around the runway (not WIMAC).
I was able to turn it around and deposit it softly some 80 meters from the runway

Damage: three plastic screws holding the landing gear. Only!
Reason: an unsoldered clevis from the pushrod. Probably when I was really bad at soldering.

Some days are like this... some others suck!:angry:

PaulG-rc
2009-06-11, 06:34 PM
Wow! I guess you did get lucky.
How about me this afternoon I was in the Park with my Ecureuil and my friend with his big Airwolf and just as I was spooling up to take-off the soccer field sprinkler system came on :eek: man that was funny but I'm glad I was on the ground :D:D lucky too

LAMAHORSE
2009-06-12, 07:15 AM
Somekind,
of lucky day !

Glade you guy's go back home with a smily face !
Keet it cool...

Denis Cloutier
2009-06-12, 12:35 PM
Go by a 6/49 it's your lucky day;)

Sunfly
2009-06-12, 02:44 PM
He! I guess the knee pads got a lot of wear and tear during this landing. :)

When the luck passes just take it man, just take it !

AlixB
2009-06-12, 05:15 PM
Albert those were my recommendations 4 years ago.
To fly this tank 9 times you must be quite good now. Congrats for saving the day.

Paul, helis fly rain or shine, sprinkler or not. Just flip them inverted after take off to keep the bearings dry. :-)
By the way nice work, I love to see your scale videos.

Burning Head
2009-06-12, 06:31 PM
The planes is back home safely, but the heart is still beating to fast:D happy to no every thing are ok

beto9
2009-06-12, 06:49 PM
Albert those were my recommendations 4 years ago.
To fly this tank 9 times you must be quite good now. Congrats for saving the day.


Ah, you remember.... and yes, it was good advice. One or two members who bought it pancacked them on approach....

As far as being good now.... hmmm! The jury is still out!

Sunfly
2009-06-13, 10:59 AM
May be your culprit here is tin/lead solder ! May be not.
I want to stress something about joining two metallic parts with solder.
There is 2 common solutions. Tin lead/solder should only be used with parts that are not transmitting mechanical forces . So, I personally only use it for electrical connections and electronics.
Any parts that are subject to vibration,fatigue,stress and even very light force should be soldered using silver. Silver alloy are sold at the hobby shop,they almost melt at the same temperature as tin/lead alloy and they do the job.

My two cents

xed
2009-06-13, 07:17 PM
Or even easier, use better linkages.. Ball links are the best, they are plastic at the base and extremely resistant to vibration. No soldering required!

beto9
2009-06-13, 09:59 PM
In this case I had to use a very flexible pushrod because it was going around funny curves. So the clevis end had to be soldered...

I will take the hint, use silver.... Some metals solder better than others. Since it was not magnetic I think I was using stainless steel. I guess is not too good with solder. roughned it up, etc., but still will not hold. I gave it the pull-pull-pull test and came out.

Ah, the problems we have.....