Shock Cord questions

[tcraftflyer]

I know that you can combine the shock cords for a BC-12D and an F-19 to make a more rigid gear, but I have a 1940 BL-65 and the dimensions are slightly different on the older model cords. Is there any way to beef up the pre war models landing gear, or am I stuck with that one choice?

[Forrest Barber]

Re: Shock Cord questions

Your ship uses the 9090 cords. 9/16th dia. cord & 9 inches around. the later ships use 9010 or 9/16 & 10 inches around. Sooooo you are kind of stuck short of putting a third cord over the two 9090's . This has been done with another 9010 maybe?? Why do you need the extra , the cords protect your ship from damage during hard landings....

[tcraftflyer]

Re: Shock Cord questions

I was mainly just curious, my friend and instructor has a J-3 and he said it uses the same cords as the Super Cub. I was thinking that it would help them last longer or be more supportive on backcountry strips, although I haven't ever had any problems as far as that is concerned. Bottom line is I need to change my old ones out because it feels pretty mushy and there is quite a bit of landing gear movement when I rock the wings.

[Forrest Barber]

Re: Shock Cord questions

In the beginning they were supposed to be changed about each three years So if they are mushy cahnge them. You can also wrap any thinner bungee cord over top and secure with a twist & a hog ring.

[alwaysoar]

Re: Shock Cord questions

Forrest, Can you elaborate a little on the twist and hog ring?

Ed @BTV VT
TF 527

[joelharris]

Re: Shock Cord questions

I have a BL also and am wondering if I were to bolt my 46 BC gear legs on the 40 BL could I run the BC shock cords or are there other differences?

[Forrest Barber]

Re: Shock Cord questions

The difference is in the upper truss and width of the "ears", measure twice , cut once ..... measure stuff and see!
If you take straight bungee material off a roll and wrap and wrap pulling very tight but not too tight
Then put one end under the last wrap, fold back and secure, hog ring, safety wire, screw clamp, what ever..... gives you more bungee strength.

[joelharris]

Re: Shock Cord questions

very interesting, thanks!

Joel