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HomeAircraftHelicopterHelicopter Main Discussion › Would you use Stainless Steel or Regular Steel?
10-28-2006 07:17 AM  12 years agoPost 1
3Dflyer

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Maple Ridge, BC, Canada

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There was a post a little while ago about where to find Stainless bolts etc and I was wondering if that would be the way to go? What do you guys think? Stainless Steel or Regular Steel? Seems that regular steel is stronger, or is it? I've talked to a couple of people and they seem to think that regular steel is stronger, perhaps because it may not have as much "flex" as Stainless steel. Thoughts are appreciated!
I'm building my tools and screws etc and am purchasing packages of 50, so I want to make sure to make the right investment.
Thanks again!

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10-28-2006 07:47 AM  12 years agoPost 2
Furious Predator

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Kitchener, Ontario, Canada

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i think it would be a waste of money. the only advantage you would gain with stainless is that they would be resistant to rusting. stainless is generally harder, so it has better tensile strength, but will be more brittle, and will snap instead of bending.

but in all reality....are you going to load up the screws on your helicopter that much that a few extra ksi on the bolts capacity matter?

i'm sure if you do somethign to cause those bolts to fail, that the bolts will be the least of your problems

i would just get the standard black oxide coated steel ones....unless you can get the stainless cheaper.

if youw ant a fancy look, you can get chromed and anodized (aluminium alloy)ones as well....but i cant recall the websites....

Shawn
Team Leisure-Tech
Team HelixRC

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10-28-2006 09:30 AM  12 years agoPost 3
Yug

rrMaster

UK. Herts

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Stainless steel bolts help the heli fly faster. In all honesty though I see little point in using them over the standard black ones unless it's for aesthetics.

Vegetable rights and Peace

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10-28-2006 01:59 PM  12 years agoPost 4
BlakeMcBrayer

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Georgetown, Ky

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Unless you live some where that the humidity stays REALLY high most of the time, then I wouldn't worry about SS screws. Even in high humidity, it doesn't take a lot of effort to keep the steel alloy screws from rusting.

It's mostly up to you, the SS screws are plenty strong enough for eveything that doesn't rotate. On one of my Raptor 90's, every last screw is stainless except for anything that is on the head or tail. Why you ask......................it's just for bling.

I have around 400 flights on the stainless steel screw equiped heli and I have never had a problem with or broken a SS screw when I've crashed.

Don't come off the throttle untill you see your GOD!

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10-28-2006 02:09 PM  12 years agoPost 5
Yug

rrMaster

UK. Herts

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BlakeMcBrayer - where did you get those carbon frame stiffeners or are they home grown ?

Vegetable rights and Peace

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10-28-2006 02:19 PM  12 years agoPost 6
BlakeMcBrayer

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Georgetown, Ky

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The frame stiffeners came from Carbon Extreme. I just went and looked at their site so I could give a direct link to them, but I couldn't find them. What is up with that? They must have dropped them from their line up.

http://www.carbonxtreme.com/catalog/index.php

I have sent them a email asking about them. Hell, I'd like to know as I was going to be needing two more sets myself??????

.

Don't come off the throttle untill you see your GOD!

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10-28-2006 02:26 PM  12 years agoPost 7
Yug

rrMaster

UK. Herts

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I seem to remember someone else mentioning carbon extreme had stopped doing them. I was chatting to a guy at Midland Helis who mentioned that he knew someone who could make some up. Apparently he makes carbon parts for F1 cars.

Vegetable rights and Peace

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10-28-2006 03:03 PM  12 years agoPost 8
BlakeMcBrayer

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Georgetown, Ky

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Do you have a link for Midland Helis? I quess I need to find another source as well.

Worst come to worse, I quess I could remove one of mine and send to to someone to be copied.

.

Don't come off the throttle untill you see your GOD!

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10-28-2006 03:09 PM  12 years agoPost 9
Yug

rrMaster

UK. Herts

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I think it was Mat who mentioned this at MH. Note that they don't sell them, he just knows a bloke who can make 'em.

http://www.modelhelicopters.co.uk/acatalog/m_index.htm

Vegetable rights and Peace

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10-28-2006 05:05 PM  12 years agoPost 10
TMoore

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Cookeville, TN

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stainless is generally harder
Not exactly. It depends on the series of CRES that you are talking about and in general most CRES series is going to be softer than most medium carbon steels due to the heat treat process that either material can endure. It's a fact that Stainless is generally not able to be heat treated to the same hardness that medium to high carbon steel is capable of.

SHCS' are either grade 8 or up to grade 12.9 which is a standard that the bolt manufacturers use to grade most modern bolts. In general CRES bolts are used where there is a severe corrosion issue and strength is a secondary factor.

For model heli use, get what's cheaper and what you want. Stainless is OK but will usually cost more than standard steel SHCS's cost.

TM

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10-28-2006 05:30 PM  12 years agoPost 11
MikeInMobile

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Mobile, Alabama

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Stainless steel screws are very handy when conductivity is required. I use them for all of the bolts that hold the motor mount to the frames, as well as the bolts that hold the engine to the mount. This allows me to easily use a remote glow adapter without any loss of current to the glow plug. As far as the opther bolts on the heli, I use grade 11 parts exclusively. Most of the fasteners supplies with kits are grade 8, and will stretch and break under load.

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10-28-2006 07:42 PM  12 years agoPost 12
rroback

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Irvine (UCI), Ca

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Where's a good place for high quality metric bolts/nuts in ss, and regular steel?

Rhett..... I can't fly, but the Profi sure can.

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10-28-2006 07:52 PM  12 years agoPost 13
MikeInMobile

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Mobile, Alabama

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RTL Fasteners for regular
http://rtlfasteners.com/RC/index.html

Micro Fasteners for stainless
http://www.microfasteners.com/catalog/index.cfm

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10-28-2006 08:51 PM  12 years agoPost 14
Stretched

rrApprentice

Mobile, Alabama

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RCSCREWZ.COM has kits for a lot of the major brands out there.

Pretty darn reasonably priced as well.


Scott

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10-29-2006 03:34 AM  12 years agoPost 15
3Dflyer

rrNovice

Maple Ridge, BC, Canada

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Thanks again guys! Much appreciated. Since I'm building my hardware up, I'll get a mixture of both regular steel and SS.

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