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Broken springs

16 posts in this topic

Posted

I was having fun till my T/W spring broke, I hope the heim joints don't break again, I couldn't tell if it came down on the rudder or not but is was very very close:huh:

This kinda thing must happen somewhat often, but since the spring is broke is there a better replacement option, such as aluminum or something? 

BTW aviation is such a great community, the airport my mishap happened at, the manager let me but the airplane in an empty hangar till I can get it fixed:BC:

 

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Posted

single or dual leaf?  Can you get a good shot of the end of the spring at the break?

  Glad is did not end any worse!

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Posted

Taller gear will help out with not smacking that tail wheel first all the time as well and will make you happier I think.

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Posted

Its dual leaf spring, but it broke just after the top spring stops 

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Posted


I hear the T-3 is pretty cool also the grove spring or kitfox has a 3 leaf too.

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Posted

Is your top spring square across the end or rounded, its kind of tough to tell from the angle of your pics.  

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Posted

The bend in it right at the front of the saddle looks like she has taken a beating.  How many hours are on that spring?  Sometimes when you beef up a sacrificial part, it makes you break other parts that are much more expensive and time consuming to replace.

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Posted

Here's a pic before I installed the new tailwheel.

I would figure there's 500hrs on that spring, probably original if I had to guess. 

I did do a tail first full stall landing but it's the next landing that it broke on,  that was a 3 point. 

It looks like it's been cracked a while, just never noticed it cause its pinched on the top. 

My landings are not bad at all and I land on decent grass runways, nothin off airport yet, still practicing

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Posted (edited)

Since you changed tail wheel assy's, any possible issue with the new brackett extending less or more than the original bracket? 

Edited by Allen Sutphin

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Posted

The new T/W assy covers the same amount of spring, only thing is the new T/W is a couple pounds heavier:dunno:

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Posted


I hate it when that happens!  You are not the first.

I broke my original on my MKIV and replaced it with a wider and thicker double spring. I never broke the spring but had the mounting bolt break on my Avid+ and dropped in on its rudder when I was just pushing it into a tiedown spot.  I finally put a T3 on mine, not cheap but it takes a lot of the beating off your whole tail assembly and is really nice to land with and taxi.

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Posted

I love the T3 just wish they weren't so expensive or I would have one::)

I bout the 3 leaf one from Kitfox, hope it's good enough 

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Posted (edited)

I think a shorter (helper?) spring should be cut straight across or rounded, but not pointed like in the above photo. That would cause a stress point in the main spring. 

spring_LI.jpg

Edited by Ronin
added photo

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Posted

I used a dual spring from Wausau Springs, (715) 845-6335, at about $75. Nice guys, strong springs.

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Posted

On my bluefox #0038 I used a stock univar supercub 3 leaf spring, but i left one spring out, so just used two, so far seams to work great, got it for $50 at a hanger cleaning sale. And it was curved correct for the tailwheel axle to sit right, 

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Posted

A few years ago, I bought a new Aeronca Chief spring, and the guy had a never used three leaf 1 1/2" wide experimental tailspring that he threw into the deal.  I think it came from aircraft spruce, for an Acro Sport if my memory is right.  When I needed a new spring for the Avid, I used 2 leaves from that spring, maybe rebent it a bit in my press.  I think they sold that spring for about 55 or 60, although when I just looked for it on their site, I didn't find it.  Works fine for me.  What I have found is if you want to make your own, you can find 1 3/4" wide springs pretty easy, seems that's the width used on light trailers often,  but the 1 1/2" or 1 1/4" width is harder to come up with. JImChuk

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