LOC/Precision Legacy

LOC/Precision Legacy

Post by Yves Lacom » Fri, 14 Mar 1997 04:00:00



Grumble.

Seems they cut the fins with the grain parallel to the root edge, not
the leading edge.  Anybody else got the same thing when they bought
their LOC Legacy? :/

--
Yves

 
 
 

LOC/Precision Legacy

Post by Stefan Wimm » Sat, 15 Mar 1997 04:00:00


Quote:

>Grumble.

>Seems they cut the fins with the grain parallel to the root edge, not
>the leading edge.  Anybody else got the same thing when they bought
>their LOC Legacy? :/

My Legacies have thei fins made of plywood. Maybe the outer layers of this
multilayer materials may have their grain parallel to the BT, but that's not
critical in this case.

BTW: I suggest to use the epoxy rivet technique when gluing the fins on. My
first Legacy (I have 3 of 'em) always broke a fin on landing. After that
modification I had one impact on a hard tennis court (abandoned that time!)
after tumbling down from 1000 ft on a partial deployment. This time the fin
held and made a nice hole into the court. Ok- it got a ding too, but the
fin/BT joint held together!
--

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LOC/Precision Legacy

Post by Bob Kapl » Sun, 16 Mar 1997 04:00:00


Quote:

> Grumble.

> Seems they cut the fins with the grain parallel to the root edge, not
> the leading edge.  Anybody else got the same thing when they bought
> their LOC Legacy? :/

My recent MSH 4" kits, ADR and V-2 were also cut that way. It's not quite as
fatal with plywood, but still not good.

        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

 
 
 

LOC/Precision Legacy

Post by Bob Kapl » Sun, 16 Mar 1997 04:00:00


Quote:


>>Seems they cut the fins with the grain parallel to the root edge, not
>>the leading edge.  Anybody else got the same thing when they bought
>>their LOC Legacy? :/

> My Legacies have thei fins made of plywood. Maybe the outer layers of this
> multilayer materials may have their grain parallel to the BT, but that's not
> critical in this case.

I beg to differ. Most of the good LMR/HPR kits in this size use 1/8" plywood
for fins. This is actually a 6-ply wood, but four of the six plys run one
way, including both surface plys, and only two run perpendicular to the
surface grain. So you have much more strength in one direction than the
other. The rule still should be followed: the grain should be parallel to
the leading edge, or perpendicular to the root edge.

        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"