Nose tire 1964 M20c

[macosxuser]

On 9/26/2016 at 5:31 PM, Cyril Gibb said:

Is there a reason that Mooney would recommend a tire inflation less than the tire manufacturer?

 

Glad you asked, yes there is. This is like your car tires, the tire manufacturer recommends a maximum normal inflation pressure, then the car manufacturer sets the actual values as installed on your car.

I can install the same 6.00x6 6 ply Flight Custom III on a 172 or a 182. Depending on the operating weight of that airplane, the recommended pressure by the airframe manufacturer is different. The idea is, you always want the same amount of tire tread touching the ground, so if the Gross Weight of the aircraft is higher, the PSI in the tire has to be higher so the sidewall is not rubbing. Over a given pressure, you need a thicker sidewall to accommodate the PSI required, hence the step up between the C and F. For reference, some Turbo 210's have a 5.00x5 10ply nosewheel tire running at 90PSI. . . Those are a little alarming to fill the first time.

[cliffy]

Part of the MM procedure on changing tires is to retract the gear a minimum of 5 times to check wheel well clearance. Not such a big deal on Charlie Armstrong gear because if it rubs or stops going up you can feel it and put it back down but the first take off with an electric gear airplane and it rubs or stalls?????????

It all comes down again to who signs it off. What they use for a reference to procedure (per MM section XX.xx), if that is what is used then maybe jacks are needed.