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HelicopterAntiques or Out of Business › Stainless Steel Blade Bolt?
08-12-2016 11:46 PM  14 months agoPost 1
Mikerobe

rrVeteran

Green Turtle Cay,Abaco, Bahamas.

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I'm restoring a GMP Cobra and would like to run Spinblades with 4mm stainless steel bolts. The rotor head has been repainted with Klass Kote and I was hoping to not have ugly, rusted steel bolts.

Wudda ya think?

The lot I got is not a lot, but I thank God a lot for the lot I got!

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08-13-2016 12:23 AM  14 months agoPost 2
madgadget

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St Louis MO

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08-13-2016 12:24 AM  14 months agoPost 3
madgadget

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St Louis MO

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Or one of rcscrewz.com complete stainless kits for more bling

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08-13-2016 12:48 AM  14 months agoPost 4
JuanRodriguez

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The Villages, Florida

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Don't believe stainless steel bolts would be recommended for that application.....

Been there, done that and old enough to know better.....

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08-13-2016 02:00 AM  14 months agoPost 5
Four Stroker

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Atlanta

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See if you can find some K&S shinny 4 mm blade bolts - try Advantage - they are chromed steel. Or maybe nickel. Agree with Juan !

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08-13-2016 02:03 AM  14 months agoPost 6
Four Stroker

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Atlanta

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08-13-2016 02:40 AM  14 months agoPost 7
Chris Bergen

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cassopolis, MI USA

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Definitely do not recommend stainless...

McMaster Carr has zinc plated grade 12.9...

Chris D. Bergen

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08-15-2016 05:29 PM  14 months agoPost 8
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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Yeah, I was thinking a Cobra with asymmetrical Spinblades and an OS 45FSR would be minimal loading on 4mm stainless bolts.
The KSJ chromed bolts aren't easy to come by anymore. I have these on my 60 and 70 powered.
There are a few metric chromed online but finding a long-shanked 4mm hasn't been successful.

The lot I got is not a lot, but I thank God a lot for the lot I got!

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08-16-2016 08:58 PM  14 months agoPost 9
Chris Bergen

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cassopolis, MI USA

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We use the ones from Mcmaster Carr, the threaded portion is too long, simply cut it down to the length you need.

The shank is long enough (for our blade grips) to reach the other side of the grip...

Chris D. Bergen

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08-17-2016 02:01 AM  14 months agoPost 10
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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Hi Chris,
I may just do that! I'll see what else I can justify for an order from McMaster.
Any new colors in the G10?!

The lot I got is not a lot, but I thank God a lot for the lot I got!

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08-17-2016 02:24 AM  14 months agoPost 11
Chris Bergen

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cassopolis, MI USA

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I got all the Henry Ford colors!!

Chris D. Bergen

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08-17-2016 01:46 PM  14 months agoPost 12
Mikerobe

rrVeteran

Green Turtle Cay,Abaco, Bahamas.

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I got all the Henry Ford colors!!
Har-Har! I've hijacked my own thread here haven't I?

The lot I got is not a lot, but I thank God a lot for the lot I got!

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08-20-2016 11:07 AM  14 months agoPost 13
kencol

rrNovice

Australia

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Stanless is Brittle[not a good plan unless you wear body armour]

Good Heli flying is throwing it at the ground and missing

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11-18-2016 05:29 PM  11 months agoPost 14
w8qz

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Grand Rapids, MI - USA

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Stainless is not necessarily brittle - depends on the alloy, grade, heat treat, etc.
The typical hardware-store stainless fastener is a relatively soft material, usually one of the free-machining grades, with a minimum yield strength of 30 KSI (assuming MS51957 screws are similar). If you get a stainless fastener out of heat-treated A286, those typically are high-strength.
If fastener strength is important, you need to get the actual specs for the fastener you want to use. But, this is not easy to come by from your local hardware store - the clerk probably would have no clue what you're talking about.

"The helicopter is much easier to design than the aeroplane, but is worthless when done."

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11-18-2016 11:35 PM  11 months agoPost 15
JuanRodriguez

rrProfessor

The Villages, Florida

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But, this is not easy to come by from your local hardware store - the clerk probably would have no clue what you're talking about.
And that is exactly why it is not recommended for this application..... unless, that is, you know exactly what you are doing.... most don't.....

Been there, done that and old enough to know better.....

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11-19-2016 02:29 PM  11 months agoPost 16
Pistol Pete

rrProfessor

Seffner, FL

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I was hoping to not have ugly, rusted steel bolts
http://www.Corrosionx.com

~~Enjoying the hobby one flight at a time~~

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