Landing Gear Bushing Size Needed or Source

[M Towsley]

Searching past archives did not come up with a definitive source for the landing gear bushings. Wag-Aero does not carry them and looking at Univair's parts listing I don't see them. Both carry the fight surfaces' bearings, but no landing gear.

I saw one post giving dimensions for the L-2, but I am not one hundred percent sure those would be the same. I know others have had to change these out, just need some dimensions and sources. Thanks!!!

[Robert Lees]

Re: Landing Gear Bushing Size Needed or Source

You should have said two weeks ago, Marty, I have a few of them at home!

Remind me in a few days and I'll measure them up, unless someone else chimes in. I made mine from phosphor bronze.

Rob

[M Towsley]

Re: Landing Gear Bushing Size Needed or Source

Thanks, Rob. Also still need to arrange payment on that other item.

[Pearson]

Re: Landing Gear Bushing Size Needed or Source

I measured the bushing in the landing gear on my project plane, a 1946 BC12D. It is 1.250" long with a 0.322" ID, and a 0.530" OD. The OD was difficult to get a good measurement on due to a thick coat of paint, but it was definitely over 1/2". Also, I don't know if these bushings are worn on the ID or not. The holes in the mounting flanges on the fuselage measured exactly 5/16th of an inch, or 0.312", so that will give you an idea of the clearance needed in the bushing. On the L2 it is 0.314" to 0.316", so I suspect my bushings are worn.

[Robert Lees]

Re: Landing Gear Bushing Size Needed or Source

Another thing (not aimed at any one in particular, just a general comment):

If you make your own (or by some other OPP method), machine the OD a slight interference fit (by a thou or two), and machine the ID undersize & ream the ID to size after pressing in. Also, there is a lubrication hole (which of course you lubricate every annual, don't you? ) that needs drilling after pressing in.

It's possible that the originals were in two pieces, pressed in from each end of the gear leg housing...or perhaps they were split longitudinally....I can't recall.

[Guest]

Re: Landing Gear Bushing Size Needed or Source

Marty,

Have you looked here?

http://www.catalogds.com/db/service?domain=atlasbronze&command=locate&category=sleeve-bushings-standard-size

Dave

[M Towsley]

Re: Landing Gear Bushing Size Needed or Source

No Dave, I didn't find that. However, I still would need accurate measurements to use that. Thanks for the link!

[Guest]

Re: Landing Gear Bushing Size Needed or Source

here is a better link

http://www.grainger.com/search?searchQuery=3FJH5&fromCatalog=true

[Robert Lees]

Re: Landing Gear Bushing Size Needed or Source

Here's some pics of the bushings I made in phosphor bronze.

L = 1.2500"
ID = 0.3100"
OD = 0.3770"

You can see the original was made with a split, and you can also see the lub hole that needs drilling after pressing in.

[Guest]

Re: Landing Gear Bushing Size Needed or Source

On my plane the lube hole is not accessable after the landing gear is installed.

[M Towsley]

Re: Landing Gear Bushing Size Needed or Source

Anyone know of someone who makes this kind of item with Rob's specs?

[Guest]

Re: Landing Gear Bushing Size Needed or Source

Using two of these will do it => http://www.grainger.com/search?searc...omCatalog=true

[Guest]

Re: Landing Gear Bushing Size Needed or Source

oops they may be .008" larger o.d.

[M Towsley]

Re: Landing Gear Bushing Size Needed or Source

A little too short, too, I think.

[Guest]

Re: Landing Gear Bushing Size Needed or Source

Ahhh, my bad, I was not clear, not too short, two of them end to make the correct length, that's what I meant by "two of these will do it"

I have purchased bushings from t-craft when they were in business in the '80's and the bushings were these sintered bronze sleeve bushings.

I think that is all you need to use. Having them machined is over kill.

Press or hammer these types into place then ream to proper i.d. if needed.

Dave