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Wing fuel gauge

Patrick Horan
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Patrick Horan Collaborator

Patrick Horan

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Well this was an interesting way for my Rochester wing gauge to break.

I just wished we can get new ones. I purchased general Rochester gauges and it works..sorta, but it's not like the real thing. 

 

Is it possible to go directly to Rochester and have some custom made? Since Mooney doesn't want to help us out. Or have more important things to do.

20241231_163244.jpg

IvanP Community Regular

IvanP

Posted
Posted

Same thing happened to one of my gauges. LASAR has a wait list for these. No ETA, though. Maybe they are waiting for enough people to be in the list to place an order for a batch of indicators.

M20F Grand Master

M20F

Posted
Posted
  On 1/1/2025 at 4:24 AM, MikeOH said:

With no options, local hangar fairies in my vicinity would be hard at work fabricating a pointer:D

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Paintbrush seems a great solution ;-)

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dkkim73 Mentor

dkkim73

Posted
Posted
  On 1/1/2025 at 5:03 AM, Marc_B said:

Does the paintbrush always point to “full” or always on “empty”?  …or maybe just halfway!

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Is halfway "half empty" or "half full"? Other threads imply it might have to do with whether or not it's G100UL. 

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dkkim73 Mentor

dkkim73

Posted
Posted

I went with a custom overlay (will dig up thread). While I'd hoped to have a proper replacement sooner, it is holding up well... 

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mike_elliott Grand Master

mike_elliott

Posted
Posted
  On 1/1/2025 at 5:03 AM, Marc_B said:

Does the paintbrush always point to “full” or always on “empty”?  …or maybe just halfway!

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To be legal, it must point to empty when tank is empty. No restrictions on where it points to in other fill states

Pinecone Grand Master

Pinecone

Posted
Posted

Rule was never that it ONLY had to read empty when empty.

Problem with something like LASAR going a buy from Rochester, is there are a number of different ones for different models

 

Marc_B Mentor

Marc_B

Posted
Posted

The wing site gauges were designed to read accurate on the ground on the landing gear (nose pitch up) so in flight aren’t accurate. So I don’t think it’s considered a primary fuel gauge and isn’t required equipment. 

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Pinecone Grand Master

Pinecone

Posted
Posted
  On 1/1/2025 at 8:29 PM, mike_elliott said:

Since a sight gauge is not primary, I doubt there is any rule on any precision of its reading , Correct me if wrong again :)

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That would be my understanding.

POH says it only an aid to partially fueling.

dkkim73 Mentor

dkkim73

Posted
Posted

@Patrick Horan I think you're already fully in the loop on the do-it-yourself marking discussion, but now that I'm at a computer I dug up the other thread for those maybe wanting to fab a temporary replacement :

Note that the scale markings vary from model to model; you can use my template for the appropriate 89/100 tanks, but if not the approach is generalizable. 

dkkim73 Mentor

dkkim73

Posted
Posted
  On 1/1/2025 at 9:25 PM, Marc_B said:

The wing site gauges were designed to read accurate on the ground on the landing gear (nose pitch up) so in flight aren’t accurate. So I don’t think it’s considered a primary fuel gauge and isn’t required equipment. 

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That is a really good point! I do look at them in flight (for a cross-check on balance at least) but will pay closer attention to how they differ. 

 

MikeOH Grand Master

MikeOH

Posted
Posted
  On 1/2/2025 at 8:27 PM, dkkim73 said:

@Patrick Horan I think you're already fully in the loop on the do-it-yourself marking discussion, but now that I'm at a computer I dug up the other thread for those maybe wanting to fab a temporary replacement :

Note that the scale markings vary from model to model; you can use my template for the appropriate 89/100 tanks, but if not the approach is generalizable. 

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Maybe I'm missing something, but the OP's issue was the POINTER broke into pieces; not anything to do with the markings.

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LANCECASPER Grand Master

LANCECASPER

Posted
Posted
  On 1/1/2025 at 12:53 AM, Patrick Horan said:

Well this was an interesting way for my Rochester wing gauge to break.

I just wished we can get new ones. I purchased general Rochester gauges and it works..sorta, but it's not like the real thing. 

 

Is it possible to go directly to Rochester and have some custom made? Since Mooney doesn't want to help us out. Or have more important things to do.

20241231_163244.jpg

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You will probably not find any of these in stock at Mooney or at an MSC. But, as with all other parts, order a couple through a Mooney Service Center. Mooney prioritizes purchased and manufactured parts on backorders. Once they reach the amount on back order that exceeds the minimum level they need to order from the manufacturer then it makes sense for them to order, since they’ll get their money back soon. 

The biggest issue is that so many people complain about no parts being available, yet most of them don’t order any parts. The people that are actually ordering parts are getting them in a reasonably decent timeframe. About the situation with ordering Cessna or Beechcraft parts - not many sitting on the shelf.

dkkim73 Mentor

dkkim73

Posted
Posted
  On 1/2/2025 at 10:59 PM, MikeOH said:

Maybe I'm missing something, but the OP's issue was the POINTER broke into pieces; not anything to do with the markings.

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Was assuming that replacement would be required, and supply is an issue. 

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Patrick Horan Collaborator

Patrick Horan

Posted
  • Author
Posted
  On 1/2/2025 at 10:59 PM, MikeOH said:

Maybe I'm missing something, but the OP's issue was the POINTER broke into pieces; not anything to do with the markings.

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I just installed two pseudo replacements. One for each wing. I used a same sized rochester dial fuel guage and marked the same spot with a sharpie. But i would love to get 2 official replacements

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Marc_B Mentor

Marc_B

Posted
Posted

I figure these are sealed units? Wonder if there’s a way to open and reseal?

I figure the only difference from one to the next is the printed dial face card.

Patrick Horan Collaborator

Patrick Horan

Posted
  • Author
Posted
  On 1/3/2025 at 3:23 AM, Marc_B said:

I figure these are sealed units? Wonder if there’s a way to open and reseal?

I figure the only difference from one to the next is the printed dial face card.

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I tried, but I wasn't successful 

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