sbd-3

I have a giant stinger that is almost ready to fly and my question is should i use metal or plastic bolts for the wing hold down?????

krayzc-RCU

My Feedback: (31)

i have had great sucuess with those 1/4 nylon botls, but do stand by to hear about the flyer whos broke in mid flight

Rush7

My Feedback: (74)

Dont know about the stinger so here is what I suggest.
If the wings have anti-rotation pins then the plastic wing bolts will be fine. If you do not have anti-roatation pins then I would go with the metal bolts.

If the wings have anti-rotation pins then the only use for the wing bolt is to keep the wing secure to the airframe which should never have that much force exerted on it.
If the wings do not have anti-rotataion pins then there will be a lot of force exerted on the wing bolts so metal would be the way to go.

krayzc-RCU

My Feedback: (31)

actual i have a 40% plane that came from the factor with 2 nylon botls holding on each wing and there are no wooden dowels holding this set-up. but u can always kit bash it and do it to your liking

BaldEagel

I don't know the stinger, but if its a two piece wing with with the bolts only in shear, nylon should be OK, if however the wing is one piece and the bolts are in tension, IMO I would substitute metal bolts for the wing retention.

Mike

huggins

A 1/4-20 nylon bolt has a break strength of about 300 lbs.

Mike

sbd-3

The wing is one piece foam wing.The wing has dowels in the front to lock it in the fuse,and two 1/4-20 bolts in the rear to hold the wing down.

Rush7

My Feedback: (74)

Okay then I would use metal bolts. I have found that metal bolts with bonded wahsers work really well in this application.
The bottom wing on my Ultimate is a one piece wing that is held on like the Stinger.

Mastertech

My Feedback: (31)

1/4-20 Nylon bolts are all you need. They don't back out like steel bolts can.

krayzc-RCU

My Feedback: (31)

So True!

BaldEagel

Very true, but not the thread which can strip if tightened up too much, and will wear with constant use, plus different nylon is used to produce these bolts, I have some that resemble cream cheese from a far east kit.

Mike

Bass1

Either will work. If you elect to go with the nylon make sure you have spares. Nothing like a 50 mile trip to the field and then you overtighten one of your nylon bolts with your preflight adrenalin induced meat fist and she strips real good. Then you discover you don't have any spares[X(] Been there, done that[:@]! My local hardware store carries a very super lightweight aluminum 1/4x20 and with the bonded washers work well. I now carry spares of both now as well as a spare airplane!

evan-RCU

All the Stingers I've seen have used 1/4-20 nylon bolts succesfully.

krayzc-RCU

My Feedback: (31)

bass1 u just don't know your own strenght lol yes i have did that 2 so we both must be popeye type forearms

sbd-3

Well i used steel bolta and the test flight went well.Thanks for all the info..Jerry

P.S. Mod please close thread......