KR>Re: Tail Spring

[Phillip Matheson]

I heard a axle spring from a 6 x 4 box trailer almost the correct shape. A 
small  cold bend with a long lever and solid vice. Works a treat. I thing it 
was 2 inches, just needed a light bring to Morris to fit the tail wheel bracket 
 
Drill with masonry bit. 
Phil. 

Sent from my iPhone

> On 15 Aug 2021, at 08:54, John Bouyea  wrote:
> 
> Larry asked; Did you find a suitable tail spring?  
> 
> 
> 
> 
> 
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KR>Re: Tail Spring

[John Bouyea]

Larry asked; Did you find a suitable tail spring?  I looked at a golf cart 
again the other day and they look like they had the KR in mind when they 
designed the springs.

KR people having the generous nature they do,  Kim donated his no-longer-used 
spring to me. I mounted it but it has a significant arc bent into its shape. 
Combined with my wood "tail skid" block and the 20 degree API tailwheel 
casting, I needed a flat (unbent) section of material. Langford offered some 
council as well. 
I ended up replacing my aluminum tail plate/ spring with a section of "stress 
resistant 5160 alloy steel" sourced from McMaster-Carr part # 8644T214 section 
3 feet long. I have some left over. I used the broken tail plate as my hole 
drilling template. End result is I picked up 330 grams weight at the aft-most 
possible moment arm. It is what it is...
John Bouyea
N133RM KR-2S – imported, fixed & flying
www.bouyea.net/cur_proj/N133RM 
OR81/ Hillsboro, OR





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KR>Re: : Tail Spring

[Chris Pryce]

I made my tailwheel spring from a leaf spring I found in the dirt at a
salvage yard. They gave it to me for free when I told them what it was for.
I cut it to size with an angle grinder and bent it to shape with a torch
and sledge hammer.


Chris Pryce
Vacaville, CA


On Fri, Jul 30, 2021, 17:39 Mark Wegmet  wrote:

> As I recall, someone mentioned getting a leaf out of a Chevy Astro Van
> composite spring for the tail wheel. The transverse composite spring
> from a Corvette might work as well. As they say, your results may vary.
>
>
> On 7/30/2021 1:29 PM, Flesner wrote:
> >
> >  I’ve searched the archives and I’m not finding what I’m looking for
> > toreplace the broken aluminum “tailspring” on Roy’s airplane.I’ve also
> > read how many of you have fabricated something or other from achunk of
> > steel/ fiberglass/ carbon etc.John Bouyea
> >
> > 
> >
> > I cut a length of spring from a 1930's auto leaf spring, cold bent to
> > shape, dressed 1/8" off each side to fit the tail wheel assembly and
> > bolted it to the
> 

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KR>Re: : Tail Spring

[Mark Wegmet]

As I recall, someone mentioned getting a leaf out of a Chevy Astro Van 
composite spring for the tail wheel. The transverse composite spring 
from a Corvette might work as well. As they say, your results may vary.



On 7/30/2021 1:29 PM, Flesner wrote:


 I’ve searched the archives and I’m not finding what I’m looking for 
toreplace the broken aluminum “tailspring” on Roy’s airplane.I’ve also 
read how many of you have fabricated something or other from achunk of 
steel/ fiberglass/ carbon etc.John Bouyea




I cut a length of spring from a 1930's auto leaf spring, cold bent to 
shape, dressed 1/8" off each side to fit the tail wheel assembly and 
bolted it to the fuselage.


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