Another Prop damaged

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Bigphoto
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Another Prop damaged

Post by Bigphoto »

Can't believe my bad luck! The same screw came out after almost 50 hours and damaged my prop again. To say I'm not happy is an understatement. Interesting after I replaced the prop in October before every flight I always feel all the screws on the spinner to ensure nothing is loose. After about 50 min flight when I landed I always go back over the airplane and that's when I noted the damage. Now in the process of removing the prop and returning it to MT in Florida so they can do their magic or if they already have a replacement sitting on the shelve. Need to come up with a better way, costing me to much money this way.
prop2.jpg
prop1.jpg

frfly172
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Re: Another Prop damaged

Post by frfly172 »

Have you tried tiffin aviation for the overhaul? Did my last overhaul with them.

N645XL
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Re: Another Prop damaged

Post by N645XL »

Sounds like you were doing everything right. What more can you do going forward? The only thing I could suggest is Locktite but not sure it would play nice with the balance.

frfly172
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Re: Another Prop damaged

Post by frfly172 »

Had the same problem with the bolt coming out, keeping a watch on it.

Bigphoto
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Re: Another Prop damaged

Post by Bigphoto »

So I have another recondition prop coming to me in about two weeks. $1350 does not include shipping and two things I am going to do is blue locktite which MT propeller folks did suggest and didn't think that would cause an unbalance prop, but will ensure it doesn't by checking it. Secondly I'm told that we can change out the bolt plate under where the spinner screws in. Will let you know how it goes and attach a couple of pictures on the process. Little screw really messes with the wooden prop!

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XL2driver
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Re: Another Prop damaged

Post by XL2driver »

Three questions for you BigPhoto:

1) Are the screws you are currently using, the original stainless steel screws, or were they replaced at some stage?

2) What type of washer are you using under the screw? (made of what material, and what color is it? Post photos if possible).

3) Exactly how do you tighten the screws on the spinner, and what tool do you use to do that?

4) Do any of your spinner screw-holes show any sign of wear or elongation?

Your answers to the above may provide some clues as to what went wrong, thanks.
Paul E
-------------------------------------------------------------------------------------
Maintain VSO+1

frfly172
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Re: Another Prop damaged

Post by frfly172 »

The locktite seems to be working for my prop. Looks like I may need another overhaul.

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Re: Another Prop damaged

Post by Bigphoto »

How many hours did you get out of it?

frfly172
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Re: Another Prop damaged

Post by frfly172 »

About 260 hrs . Going to overhaul before it starts to degrade in the leading edges.

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BRADLOUTH
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Re: Another Prop damaged

Post by BRADLOUTH »

I use silicone on my threads as had same issue. It seems to be screws at ends of spinner that are most vulnerable

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