Profile Tube Mounting Bolt

[Nacho]

I am busy replacing most nuts and bolts. I removed the profile tube holder bolt yesterday. It is mildsteel from the looks of it and was badly rusted. I replaced it with a stainless steel bolt, ss washer and ss niloc... total cost R9.90. When last did you inspect this bolt?

[Alkemac]

Just a question - did you also think of replacing the bolt holding the bracket on

[Nacho]

That is the same bolt. It runs straight through the bracket.

[justin.schoeman]

I am busy replacing most nuts and bolts. I removed the profile tube holder bolt yesterday. It is mildsteel from the looks of it and was badly rusted. I replaced it with a stainless steel bolt, ss washer and ss niloc... total cost R9.90. When last did you inspect this bolt?

Beware of stainless steel bolts:
1) they have terrible fatigue characteristics, and should never be used for critical structural parts.
2) stainless steel corrodes aluminium (galvanic corrosion).

[D2O]

Should you not rather use an AN bolt?
They're a lot more expensive, but I'd consider it an investment in safety.

[justin.schoeman]

Should you not rather use an AN bolt?
They're a lot more expensive, but I'd consider it an investment in safety.

Always be careful substituting components - you do not know what the designer intended when choosing a specific part. I can not see the head of the bolt, but most cap screws are grade 12.9. This has a significantly higher shear strength than the same size AN bolt. So switching to AN could turn out to be a big mistake.

Rather replace with exactly the same spec as the manufacturer used, or confirm with the manufacturer before substituting any part.

[Nacho]

Speaking to the manufacturer now. Will keep you posted on the reply.

[mulderpm]

Fully agreed with Justin. From Microcrafts Africa (Solo Wings) you can buy a full bolt replacement kit at a very reasonable price.

Replace with exactly the same fastener & nut & washer as the manufacturer recomends and your plane will be in spec and safe. Also, tighten to the manufacturers tourque setting, never overtighten.

[witwillem]

i replace mine with a 8',8 bolt from solow wings

[Dobbs]

Agree with 8.8, but beware of s/s, as mentioned, it is not known for its ability to tolerate vibration

[Nacho]

Correct Bolt is a HT (High Tensile) with a Hex head.

http://en.wikipedia.org/wiki/Ultimate_tensile_strength

[Nacho]

This is the correct cap screw. 12.9 HT

This screw plus Niloc = R3.90

[Louis Geldenhuys]

Only use cap screw. 12.9 High tensile
Cadmium plated !

[nicow]

It sounds really good, too wonderful!

Lyk my hier kom weer 'n spammer...

[klein]

Back to the bolt.

Het enige iemand dalk n idée van, watter persentasie van AUW, dra hierdie bout ?