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Old 10-16-2016, 07:49 AM   #11
Myzee
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Re: Hobbyking oleo struts


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Ive had chinese "alloy" products before...and I coudnt tell you what type of metal it was! It was very soft and a magnet would kinda stick to it. lol
If their struts are aluminum, it would be nice to just include something like 6061-T6 aluminum in the descriptions...alloy is very vague.
I am going to order set and see for myself I guess
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Old 10-16-2016, 10:32 AM   #12
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Re: Hobbyking oleo struts

I bought several straight leg struts for Warbirds and they have all worked as advertised. I ran into some poor strength Alloy issues when I bought a set of Trailing Link gear similar to the link you have provided. Also the spring included was very soft. I will never purchase trailing links again from HK, though the others are good.

Something to consider.. If you have a 20lb plane, then each main gear should be able to hold 20lbs by its self.
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Old 10-16-2016, 03:27 PM   #13
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Re: Hobbyking oleo struts

Quote:
Originally Posted by Myzee View Post
Ive had chinese "alloy" products before...and I coudnt tell you what type of metal it was! It was very soft and a magnet would kinda stick to it. lol
If their struts are aluminum, it would be nice to just include something like 6061-T6 aluminum in the descriptions...alloy is very vague.
I am going to order set and see for myself I guess
What the magnet was " kinda sticking to it" was the steel spring inside the gear. Pull the spring and screws and you will find likely no sticky.
When aluminum is heat treated it can be hardened to make it much more wear proof and harder to bend. BUT that costs money and money is not what they want to spend. Another negative with soft aluminum is you can get galling between two surfaces and taped screw threads are not strong , ending up with stripped threads and a useless piece of junk unless you are able to re-tap to a larger thread. If done keep the threads as course as you can and use wax on your tap for lubrication.

If you want some quality struts that can carry weight take a look at the C-36 Behotec struts at Altecaire r/c.

Last edited by stegl; 10-16-2016 at 03:36 PM.
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Old 10-19-2016, 11:39 PM   #14
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Re: Hobbyking oleo struts

The aluminum alloy that the magnet likes was a bike part.
Well, with exchange they were $69 CDN. So I guss we will see when they get here.
They are for my Enforcer which is about 8is pounds so I would think they should hold up.
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Old 10-20-2016, 12:06 AM   #15
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Re: Hobbyking oleo struts

Just land gentle like ! and good luck.
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Old 11-05-2016, 10:11 AM   #16
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Re: Hobbyking oleo struts

Have a set on my hangar-9 p47 60 with about 15 flights on them including a couple of dead sticks
They seem to be holding out so far
The only complaint is that the springs seem a little weak (bottoming out)
For the price I will buy more
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Old 11-05-2016, 01:42 PM   #17
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Re: Hobbyking oleo struts

depending on the diameter of the springs ; you can sometime check with a good hardware store and they may have compressions springs that may be stiffer. The advantage with trailing link struts is; the spring has a larger range of movement over compression sprung type gear ; usually that is.
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Old 11-06-2016, 06:25 AM   #18
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Re: Hobbyking oleo struts

I use several of them on tri setup.. for a nose gear.. so long as the grass is fairly flat and you don't land hard.. they have worked well..

Our field didn't get rolled this year and was pretty rough.. and even on the softest landing I could pull off usually resulted in a bent gear..
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Old 11-06-2016, 06:36 AM   #19
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Re: Hobbyking oleo struts

just on a side note.. I have a pair of robart 152 mains and a 158 nose gear.. and for the 800 usd they are asking for them ... they are the cheapest pile of tin junk I have ever seen.. their so called " positive lock " is just a stamped tin hook that barely engages the lock.. yea right " positive " .. just cheap china junk.. but they know how to charge large for them..
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Old 11-06-2016, 07:42 AM   #20
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Re: Hobbyking oleo struts

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j..pile of tin junk..
It's funny how some of them are made. I got a set of rotating from a guy a while back that was like you say, stamped tin. He had bent them and just put in a couple solid struts to lock them down.

I made new parts from aluminum extrusion and got them working again. Will probably be twice as strong as original.
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