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HelicopterMain Discussion › titanium or stainless steel?
10-25-2012 08:35 AM  5 years agoPost 1
honda411

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Surprise, AZ USA

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So i have a Gaui X7 and every single screw needed to be dremeled with a slot to get them out. The WHOLE entire heli; nightmare!

Anyways. instead of buying online which seems expensive, i thought of going Ace hardware route. So i want to know if the standard black colored stainless steel, or the silver color titanium is better/ stronger?
Thanks

HeliDirect Field Rep, Synergy N7 w/ OS 105, Torq Servos, Cyclone/ Rail blades

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10-25-2012 09:33 AM  5 years agoPost 2
adamsz06

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Geilenkirchen Germany

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If I remember correctly the black oxide screws in the kit will be the strongest. Stainless is weaker but corrosion resistant...titanium is stronger than stainless and lighter than the black oxide, but more brittle. If all you're replacing is frame screws I'd say take your pick, but any screw on the mechanics of the heli and head assembly like Jesus bolts and pinch collar screws need to be black oxide, IMO.

R.I.P. Roman

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10-25-2012 09:37 AM  5 years agoPost 3
adamsz06

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Geilenkirchen Germany

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Black colored stainless steel? If it's black, it's a carbon steel that's been heat treated...stainless is silver and titanium is a silvery gold color.

R.I.P. Roman

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10-25-2012 09:48 AM  5 years agoPost 4
ebonicrobot

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East Bay, CA

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All of the screws on my frame are stainless, and my head screws are all black oxide.

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10-25-2012 11:27 AM  5 years agoPost 5
fastflyer20

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N. Tonawanda, NY

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Buy black oxide socket head cap screws from McMaster Carr, they are very high quality, strong and a fraction of the price of a hardware store. I usually see made in the USA on the boxes I get, and yes there is a difference. The steel and heat treating is better.

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10-25-2012 12:23 PM  5 years agoPost 6
Justin Stuart (RIP)

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Plano, Texas

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I agree with using black oxide from McMaster Carr.

Stainless steel is weaker and is best for parts where you want the screw to break--such as attaching landing gear to the frame.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-25-2012 01:49 PM  5 years agoPost 7
MartyH

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USA

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I would be stunned to find you have titanium screws in your helicopter. Regardless, I'd use black oxide from McMasterCarr. The reasons were stated above. Potentially made in the USA and will be of excellent quality.

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10-25-2012 03:08 PM  5 years agoPost 8
marc8090

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Long Island, N.Y.

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I've used titanium screws in my helis before, but the cost is not worth it. High quality steel screws are just fine.

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10-25-2012 04:11 PM  5 years agoPost 9
MartyH

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USA

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Like I said, I would be stunned to find a heli kit manufacturer was using titanium screws. I guess I should have said, "because of the cost". I was looking at titanium screws for the windscreen on my hydroplane. I got pretty deep into the project looking to save that extra 1/2 of 1 oz on a machine weighing almost 900 pounds for about $80 worth of titanium screws then I snapped out of it! On an R/C heli the cost would be silly and the weight savings nearly nonexistent.
The black oxide for the heli is for strength. The stainless screws are pretty soft.

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10-25-2012 05:10 PM  5 years agoPost 10
RobertAbles

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FT. Worth, Tx.

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Focus on the class rating. Class 12.9 is the strongest rating that is readily available. Companies like RTL Fasteners and Fastenal sell these and they are cheap.

You really want a 12.9 steel screw for the strongest clamping force applications. The black oxide coating is fine and the most common you will find. Stay away from the stainless and titanium unless you want to spend more..

If the screw heads are not stamped 12.9, they are NOT 12.9.

GAUI USA Team Pilot / Cyclone Blades / Scorpion Power Systems / MKS USA / Optipower / YS Engines

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10-25-2012 06:04 PM  5 years agoPost 11
Ace Dude

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USA

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I buy all my fasteners from an industrial supplier such as McMaster. I've had to use other industrial suppliers from time to time if McMaster doesn't have what I need. I always use Class 12.9 Alloy Steel.

  

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10-25-2012 06:22 PM  5 years agoPost 12
abwomack

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Houston, TX - U.S.

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My input
I had this problem once and realized that I needed to upgrade to high end allen drivers. Just curious what you are using to take them out with. The black L's and the foldouts won't cut it. You need a quality driver and it will last a life time. (or a long time at least)

Allen Bryan

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10-25-2012 06:50 PM  5 years agoPost 13
fastflyer20

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N. Tonawanda, NY

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While it may not matter on a heli, all 12.9 grade hardware is not the same. I learned my lesson on a broaching machine, the off shore 12.9 SHCS stretched trashing the $15,000 cutter.

We replaced them with high quality USA made SHCS fixing the problem once and for all.

SO it is a win-win to buy bulk saving money and getting higher quality hardware.

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10-25-2012 06:50 PM  5 years agoPost 14
MartyH

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USA

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Heliproz has some nice anodized handles and replacable high quality bits. They are the best I have found so far.

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10-25-2012 07:07 PM  5 years agoPost 15
Ace Dude

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USA

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You can get the US made metric fasteners, but they are much more expensive.

  

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10-25-2012 08:32 PM  5 years agoPost 16
fastflyer20

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N. Tonawanda, NY

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Expensive?

http://www.mcmaster.com/#socket-head-cap-screws/=jvlm7v

Example 3mm x 12mm 100 pieces for $5.26

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10-25-2012 08:49 PM  5 years agoPost 17
Ace Dude

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USA

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Expensive?

http://www.mcmaster.com/#socket-head-cap-screws/=jvlm7v

Example 3mm x 12mm 100 pieces for $5.26
Are those made in the USA?

  

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10-25-2012 09:25 PM  5 years agoPost 18
fastflyer20

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N. Tonawanda, NY

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The ones I have bought were made in USA.

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10-25-2012 09:56 PM  5 years agoPost 19
Richardmid1

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Leeds, England

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There is such thing as high tensile stainless steel you know.

60% of the time, it works every time!

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10-25-2012 10:04 PM  5 years agoPost 20
BobOD

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New York- USA

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I use SS screws almost exclusively even though I know they are 1/2 the strength of a decent black alloy steel screw. Looks great and never an issue. Of course you would not want to do so unless the design and quality of what it is screwing into is not to a high standard. Assembly tecnique is of importance as well but the bigger issue I run into on a lot of helis is that the screw needs excessive torque so it'll hold or is prone to loosening unless excessive loctite is used. Most people would be surprized at how much the design and quality can effect the serviceability.

Exceptions are grip spindle bolts and sometimes grip blade bolts. For these, I'll use verifiable 12.9 class black alloy.

I would never use titanium. Just too brittle and not worth the weight savings. Black ones are stronger anyway.

Team POP Secret

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HelicopterMain Discussion › titanium or stainless steel?
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