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Wing Bolts? - 4/10/2012 2:53 AM   
Tony Gag Jr.



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Status: offline 		What are you guys using for wing bolts on your large scale warbirds? I have a Yellow Zero and I am just wondering if I should use nylon or metal for the wing bolts.

Thanks,
Tony

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RE: Wing Bolts? - 4/10/2012 3:02 AM   
Ram-bro


 

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Status: offline 		remember the purpose bhind the nylons is to shear off in event your rentry to terra firma is not as controlled as it could be. They do save damages. I use the nylon myself

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RE: Wing Bolts? - 4/10/2012 3:06 AM   
All Day Dan


 

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Status: offline 		Tony, I use 1/4 X 20 nylon bolts in my 20 pound 50cc planes. Dan.

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RE: Wing Bolts? - 4/10/2012 3:11 AM   
ccostant



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Status: online 		Hi Tony,

I'm still using nylon bolts on everything. Typically 1/4-20 bolts. If you're using the stock YA bolts they are actually a little beefer than 1/4-20 bolts. They are 5/16-18 bolts. I'll be getting my YA zero ready to go this month. I'm thinking I may do the maiden at Bridgewater vs Woodstock. I think Bridgewater may be more forgiving in case of an emergency.

Carl

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RE: Wing Bolts? - 4/10/2012 3:21 AM   
denoferth


 

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Status: offline 		Long time ago when the earth was still green we used to simmer all our nylon props in water with a little Rit dye mixed in to restore the water content and match the airframe. Seems dried out nylon gets brittle. Just sayen'

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RE: Wing Bolts? - 4/10/2012 3:52 AM   
big max 1935


 

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Status: offline 		From my experence about one of the few things that survive the crash are the nylon bolts that are most of the time still bolted to the blocks that are ripped out of the fuselage. Small planes I use SMALLER nylon ones but the big IMAA ones I use steel. My opinion , Max H.

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RE: Wing Bolts? - 4/10/2012 4:18 AM   
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Status: offline 		Logic tells me that if the frangible bolts survived than they were too strong for the purpose. I also have had that happen so for the smaller birds I have switched to magnets, although I have to admit that does make me a bit nervous.

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RE: Wing Bolts? - 4/10/2012 5:54 AM   
A6TEXAN


 

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quote:

ORIGINAL: denoferth

Logic tells me that if the frangible bolts survived than they were too strong for the purpose. I also have had that happen so for the smaller birds I have switched to magnets, although I have to admit that does make me a bit nervous.

lmao

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RE: Wing Bolts? - 4/10/2012 12:21 PM   
scale only 4 me



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Status: offline 		Nylon bolts might break reducing damage in a crash, they never did for me,, but the main purpose is to not vibrate out as easily as metal can.

good luck

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RE: Wing Bolts? - 4/10/2012 3:32 PM   
BobH


 

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Status: offline 		There is a method to make your nylon bolts shear as they are supposed to. Cut through them say 30-40 percent and then insert them.

The tensile strengh for a nylon 1/4-20 bolt is about 300lbs and shear is about 400lbs.

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RE: Wing Bolts? - 4/10/2012 3:54 PM   
BarracudaHockey



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Status: offline 		Metal bolts + metal blind nuts = asking for trouble

Don't ask me how I know.

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RE: Wing Bolts? - 4/10/2012 5:53 PM   
alanc


 

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Status: offline 		5-8mm nylon ones for me,     we dont have those strange imperial sizes you all love so much,   

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RE: Wing Bolts? - 4/10/2012 8:41 PM   
Tony Gag Jr.



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Status: offline 		Thanks for all the help. Nylon bolts it is.

Carl, I am not sure if the bolts I have are from Yellow or not. Mine has metal blind nuts installed and I am pretty sure they are 1/4-20. I think my test flight will be at Woodstock. Jesse will be doing the test flight so it will be at his field of choice. All I have to do is balance mine and it will be ready to go.

Thanks,
Tony

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RE: Wing Bolts? - 4/10/2012 9:24 PM   
Scalenut-RCU


 

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I guess ya'll proved it.  I use, and always have used, metal bolts on all my 50cc and bigger gas models.  I figure with the side loads imposed by long legged retracts on these beasts coupled with 30lbs or more on most of them that nylon heads would be  popping off left and right if I staid with that method.  As to vibrating loose,  that has happened to one bolt in 10+ years so it has not really been an issue for me.   I do tend to stick with metal bolts tapped into cherry or oak hardwood blocks and try to avoid blind nuts all the time.

To each his own I guess.

Forest


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RE: Wing Bolts? - 4/10/2012 9:48 PM   
jessiej



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quote:

ORIGINAL: alanc

5-8mm nylon ones for me,     we dont have those strange imperial sizes you all love so much,   


If we went metric we would have a tough time replacing all our standard three foot doors. BTW, I have some old BSF nuts and bolts in the shop too.

jess

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RE: Wing Bolts? - 4/11/2012 12:57 AM   
ccostant



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Status: online 		Hey Tony let me know when the maiden will be. I'd like to see the 1st flight.

Carl

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RE: Wing Bolts? - 4/11/2012 2:25 AM   
ckreef


 

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quote:

ORIGINAL: BobH

There is a method to make your nylon bolts shear as they are supposed to. Cut through them say 30-40 percent and then insert them.

The tensile strengh for a nylon 1/4-20 bolt is about 300lbs and shear is about 400lbs.


All that is good until you pull out of a dive a little too hard and your wing shears off in mid flight due to the bolts breaking.  Just some food for thought.



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RE: Wing Bolts? - 4/11/2012 2:54 AM   
Tony Gag Jr.



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Status: offline 		Will do Carl. Just waiting for Darrell at Sierra to get me my spinner back and I will be all set.

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RE: Wing Bolts? - 4/11/2012 4:34 AM   
Ken Kehlet


 

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Status: offline 		Hi Tony,

I like the 1/4 -20 X 2" NYLON Wing Bolts

Put each one into a Pencil Sharpener and you won't have a problem tring to find that Blind Hole.

70 years of modeling, over 50 years in R/C

Ken AMA 1528

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RE: Wing Bolts? - 4/11/2012 11:45 AM   
deatonbt


 

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Repeat of previous comment.



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RE: Wing Bolts? - 4/11/2012 12:52 PM   
BarracudaHockey



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Status: offline 		If the nylon bolts hold up to the abuse dispensed upon them by 50 and 100cc aerobatic 3D planes, they will work fine on any warbird.

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RE: Wing Bolts? - 4/11/2012 1:17 PM   
nine o nine


 

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Status: offline 		Rather than point sharpening the bolt heads I cut them at a 45 if nylon and grind if metal. It works on all sizes and makes stripping or misalignment a non event. Mitch

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RE: Wing Bolts? - 4/11/2012 2:16 PM   
Check6


 

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quote:

ORIGINAL: Tony Gag Jr.

Thanks for all the help. Nylon bolts it is.

Carl, I am not sure if the bolts I have are from Yellow or not. Mine has metal blind nuts installed and I am pretty sure they are 1/4-20. I think my test flight will be at Woodstock. Jesse will be doing the test flight so it will be at his field of choice. All I have to do is balance mine and it will be ready to go.

Thanks,
Tony

Hey Tony,
Good luck with the maiden. I remember when I used to do all test flights for everybody. Tough when you don't trust your eyes anymore.
Later,
Fred

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RE: Wing Bolts? - 4/11/2012 7:11 PM   
JeffH


 

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Status: offline 		I would not use nylon bolts with blindnuts or in a siutation where you have 4 bolts w/out dowels or rear dowels and front bolts(ala TF P-51 kit). If I have front dowels, then nylon is no problem as long as it is going into thread wood.
Personally I use nylon on sub 15-17 pound planes and metal on larger than that.

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RE: Wing Bolts? - 4/12/2012 12:43 AM   
Tony Gag Jr.



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Status: offline 		Thanks Fred. I miss those days in a big way. Really wish you were still flying!!!

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