Stuck in grass

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Rich
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Re: Stuck in grass

Post by Rich »

alanhawse wrote: Wed Jun 29, 2022 2:10 pm
Rich wrote: Wed Jun 22, 2022 7:24 pm Both problems solved. NOTE: Cleveland wheel.

N40XE Nosewheel Inflator.jpg
How did you make that hole?

That is definitely what I need to do.
I was pointing out that for Cleveland wheels it's not a big trick to gain access to the valve stem, and I have no nosewheel cant problem.

That's the stock hole in mine. It is properly positioned for the Cleveland valve stem. But note that even then the stem is not actually centered in the hole, but more to the rear. The Beringer wheels position the stem almost at the edge of the wheel. I would suggest having a composite-savvy person elongate the existing hole rearward as necessary to allow the same kind of access to the Beringer valve stem.
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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gcampbe2
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Re: Stuck in grass

Post by gcampbe2 »

I returned from a weekend trip yesterday, and confirmed that the tires are indeed 10 ply, as Paul had suspected. Here are some photos of the main and nose wheels:

Mains:
main.jpeg
Nose:
nose.jpeg
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chili4way
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Re: Stuck in grass

Post by chili4way »

I heard back from Diamond Technical Support. They disavow the placards on your plane (which I assume came that way from the factory - although it is unusual there would be one on the fork under the NLG fairing as shown on your earlier photo).

At least you know what the correct pressure should be -- the same as all the other DA40NGs. 48 psi in the rear and 35 psi for the nose. Good idea to get your placards updated.

From: Technical Support - Canada
Sent: Monday, July 18, 2022 2:48 PM
To: chili4way
re: Case 00098588: Tire Inflation Pressure for Beringer Wheels

Hi Paul,

According to our Airworthiness team, Diamond Aircraft has no history of any tire exceeding 100psi. There is also no record of placards for 112psi. My previous communication on June 21 2022 with reference to chapter 12-10 pg. 13 of the DA 40NG AMM is the only documented psi for our aircraft.

Kind Regards,

Kyle Best

Technical Support Specialist

Diamond Aircraft Industries Canada
1560 Crumlin Sideroad ? London, Ontario ? Canada
T +1 519-457-4041
E support-canada@diamondaircraft.com
W www.diamondaircraft.com

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gcampbe2
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Re: Stuck in grass

Post by gcampbe2 »

Thanks Paul!

Kyle sent me basically an identical response yesterday as well, with a recommendation that I contact my mechanic. I have pointed out that my mechanic had nothing to do with the placards, and the plane came that way from the Diamond factory a year ago. Regardless, I'm letting my mechanic weigh in, and will pursue the matter from there.

Unfortunately this has turned into another example of very poor Diamond after sales support. It took a month to get a reply on an issue as simple as tire inflation, and then the reply just referred me to the POH, which I obviously am well aware of. I am wary of making such major changes to the tire pressure I have been using until I can get a clear explanation as to why my placards read so high, and if they are placarded in error, how that error occurred.

I will keep you posted as the saga unfolds.

My thanks again for pursuing this matter Paul!!
Greg

P.S. The original nose placard fell off a couple of months ago, so I had it replaced when the aircraft was last serviced a month ago. Since I have removed the nose fairing, I guess they opted to stick the placard on the fork. But note that the main placards (112 PSI) are the original, and the original nose placard was for the same 88 PSI as the new one.
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gcampbe2
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Re: Stuck in grass

Post by gcampbe2 »

I can finally close off this thread, having been able to at last receive firm confirmation as to the correct tire pressure which is indeed 48/35. While there was much denial at Diamond as to the 112/88 placards on my plane, the photos of the plane taken on the day it was delivered from the Diamond factory confirm it was indeed Diamond that placed these on the aircraft. These placards resulted from confusion at the combination of Beringer wheels and 10 ply tires. Apparently I was not the only person affected by this, and my mechanic was likewise confused by the situation, and struggled to get a clear answer.

The STC for the Beringer wheels are the key, and regardless of ply, refer one back to the AMM which documents 48/35 or 48/45 depending on if MAM 40-631 is installed.

The bottom line: My existing placards will be replaced the next time the aircraft is serviced, and in the meantime I will operate at the reduced pressure, which should make soft field operations more feasible!

Thanks to Paul for advocating on my behalf with Diamond in pursuit of an answer!

Here's the AMM:
AMM_tires.png
And here's the Beringer STC:
beringer_stc.png
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Re: Stuck in grass

Post by YokotaFTC »

gcampbe2 wrote: Mon Jul 04, 2022 1:00 pm I returned from a weekend trip yesterday, and confirmed that the tires are indeed 10 ply, as Paul had suspected. Here are some photos of the main and nose wheels:

Mains:
main.jpeg

Nose:
nose.jpeg
JUST NOTICED THIS....was building a shopping list.... was about to go back out to aircraft to verify....but we have 10Ply installed but AMM states 6ply. Anyone ever get an answer regarding this?
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Re: Stuck in grass

Post by Mjwatlanta »

I posted this a while ago. Here it is again:

I’m sure someone has a better idea, but here is my tire inflator tool. The wheel pants make getting a conventional connector to the valve difficult. This combo works great! It fits in my flight bag. And it really is easy to use - except on front wheel but it’s still easy enough. Amazon:

JACO Lightning L2X Tire Inflator Hose Extension Self Locking Nozzle | Patented Lock-on Air Hose Adapter for Tire Pumps (Open Flow)
for "tire inflator extension tube"
$27.90

Acpatur Portable Air Compressor Tire Inflator, 150 PSI &2X Faster,Cordless Easy Operation,Accurate LCD Screen-Air Pump for Cars,Bikes, Motorcycles, Balls, Not Suitable for Trucks
$69.99
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