Landing gear torque value for the nuts
- Thread starter pipergreg
- Start date
https://www.supercub.org/forum/archive/index.php/t-41198.html Old thread. DENNY
frequent_flyer
Registered User
Arizona, USA
One of the owner performed tasks in the FX-3 build is to fit the landing gear attach bolts and torque them to spec. I questioned what seemed to be a ridiculously high torque and was told that's the way you have to do it.
I brought this up with the DAR at airworthiness cert and he agreed that the torque used was inappropriate for bolts that are acting as hinges with only shear loading. Sometimes a torque wrench can be a dangerous tool in the wrong hands or with inappropriate torque specs.
I brought this up with the DAR at airworthiness cert and he agreed that the torque used was inappropriate for bolts that are acting as hinges with only shear loading. Sometimes a torque wrench can be a dangerous tool in the wrong hands or with inappropriate torque specs.
Steve Pierce
BENEFACTOR
Graham, TX
Crash Jr.
Registered User
Anchorage, AK
This. I'm a firm believer in the calibrated wrist. If you're mechanically inclined you should be able to tell when tension is "just right" on a bolt.
Not to say there isn't a place for torque specs. Gear bolts just aren't one of those places IMO.
aktango58
FRIEND
18AA
Crank it till things bend or break, back off half turn8)
Lots of guys in the bike and sled world think torque is all you need to keep things together... I find that a touch of blue loctight with the torque makes up for lots of vibration.
Sucks to have a bolt vibrate out 1/2 way through a race in which you are gaining ground on the leader fast.
Kid Durango
FRIEND
Rangely, Co
My favorite mechanic in the big truck world said the proper torque is always a quarter turn before it snaps! It just takes a lot of practice to acquire the feel.
Southern Aero
SPONSOR
kcco/1ga2
Around here it's similar ...........tighten till it starts to loosen then back up 1/4 turn
brown bear
Registered User
emporia ks
That backing it up a 1/4 turn only works on the little stuff.
On the big stuff I go as tight as I can get it and then 1/2 turn more .
On the big stuff I go as tight as I can get it and then 1/2 turn more .
Southern Aero
SPONSOR
kcco/1ga2
Ahhhhhhhhhhh I do have a torque multiplier for that...............
