Is there a better price on Robart than...
04-23-2003, 06:38 PM
#1
Is there a better price on Robart than...
Is there a better price on 3/8" standard robart struts than $40.00 to $45.00? And is there a competitor for a similar product? I have a set of spring air 500 series setup for 3/8" oleo and I'd be more than willing to try somebody else's product. By the way, what is the definition of the word "oleo".
04-24-2003, 12:39 PM
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Sean,
Not a stupid question, just couldn't resist responding to Ron's reply.
I've often wondered about the origin of the word, too. I've just accepted it as an unknown.
I've alwasy just thought of an "oleo" strut as having a tube inside another tube with scissors to keep the tubes aligned.
An F/A-18,fo example, uses "knee action" which I don't think would be considered oleo struts.
Johnny
Not a stupid question, just couldn't resist responding to Ron's reply.
I've often wondered about the origin of the word, too. I've just accepted it as an unknown.
I've alwasy just thought of an "oleo" strut as having a tube inside another tube with scissors to keep the tubes aligned.
An F/A-18,fo example, uses "knee action" which I don't think would be considered oleo struts.
Johnny
04-24-2003, 12:43 PM
#7
Is there a better price on Robart than...
Johnny, I don't understand what you mean when you say "with scissors to keep the tubes aligned". On my rig, the "oleo" strut fits into the 3/8" hole in the retract and it's a compression fitting that tightens it down. There is nothing that I can see other than the compression to keep it aligned. Am I missing something there?
04-24-2003, 01:16 PM
#8
scissors
The scissors are on the oleo strut. All Robart struts have scissors(at least all that I have seen). Some manufacturers don't use scissors. Some use a screw threaded into the inner strut that rides in a slot in the outer strut.
In the picture below, the left strut has a scissor. the right does not. If you look closely you can see the allen head screw that holds the strut together and keeps it from rotating.
In the picture below, the left strut has a scissor. the right does not. If you look closely you can see the allen head screw that holds the strut together and keeps it from rotating.
04-24-2003, 01:41 PM
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Is there a better price on Robart than...
So you got me curious. I thought an oleo strut was just filled with oleo (OREO, darned keyboard!) cookies. And they'd all squish when you have a hard landing.
Oleo is apparently the Greek word for oil. And oleo struts are normally a system which uses a spring (actual spring, or compressed air, nitrogen, etc) and a damper. The damper is usually oil forced to pass thru an orifice.
The Robart struts are oleo struts - they just are not damped.
Filling them with margarine would make them damped, but you'd be left with sticky wheels!
BVM also sells struts (Durostruts).
Oleo is apparently the Greek word for oil. And oleo struts are normally a system which uses a spring (actual spring, or compressed air, nitrogen, etc) and a damper. The damper is usually oil forced to pass thru an orifice.
The Robart struts are oleo struts - they just are not damped.
Filling them with margarine would make them damped, but you'd be left with sticky wheels!
BVM also sells struts (Durostruts).
04-24-2003, 01:46 PM
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Here's what I call an oleo strut....
The "oleo part is the part at the bottom where the tube slides inside the other tube, and they're held in alignment, ant the amount of extension is controlled by the "scissor links"
The "oleo part is the part at the bottom where the tube slides inside the other tube, and they're held in alignment, ant the amount of extension is controlled by the "scissor links"
04-24-2003, 01:53 PM
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Ron & grbaker,
You both posted while I was trying to get my posts together (and work at the same time), so you did a better job than I did.
Ron, I didn't know the part about oleo being greek for oil. You'd think the Air Force would've taught me more about struts.
BTW: Ron, I've never noticed your preoccupation with food, specifically cookies. I need to remember to hang around you at the field. You'll obviously have food...
Johnny
You both posted while I was trying to get my posts together (and work at the same time), so you did a better job than I did.
Ron, I didn't know the part about oleo being greek for oil. You'd think the Air Force would've taught me more about struts.
BTW: Ron, I've never noticed your preoccupation with food, specifically cookies. I need to remember to hang around you at the field. You'll obviously have food...
Johnny
04-25-2003, 12:32 AM
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J Adk. whats the [ant in amount] have ants been in your coo0kies? Robart sells struts at the best price for new ones. Or you can make them your self for about twice the price and three times as long to get them. the other J A
04-25-2003, 04:27 AM
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Is there a better price on Robart than...
Oleo strut on full size aircraft means air/oil strut. No springs.
The strut is filled with hydraulic fluid and then pressuized with compressed air. Depending on size of the aircraft most struts are filled with about 1100 Psi of air.
The air oil action gives the strut its damping of the landing shock.
The strut is filled with hydraulic fluid and then pressuized with compressed air. Depending on size of the aircraft most struts are filled with about 1100 Psi of air.
The air oil action gives the strut its damping of the landing shock.
