Het F20 - Bungee Launch Ramp opinion

[P4cm4n2000]

[P4cm4n2000]

Edmond..give us some contruction details of the launcher man..keke..

[etman]

Guys, I'm building a catapult / bungee launcher for my flying wing.
I'm having difficulty buying bungee cord from USA. Either cannot export or the mail too expensive (3x the cost)

Please share where you bought your bungee cord / surgical tubing from.
Thanks.

[$h@d0w]

RC-Warbids got the 10kg & 25kg version.

http://www.rc-warbirds.com/product_i...roducts_id=303

http://www.rc-warbirds.com/product_i...roducts_id/870

[etman]

RC-Warbids got the 10kg & 25kg version.

http://www.rc-warbirds.com/product_i...roducts_id=303

http://www.rc-warbirds.com/product_i...roducts_id/870

Thanks. Wow they're expensive.

[etman]

In the end I ordered from H-K. Only they don't have stock, have to wait for the stock to arrive. Why these things are not available cheaply here. Wonder wonder...

[fuse]

i gave a bunjee set to edmund22 team. you can share with them

[shoyn]

Hi. How did you build the bungee and where did you get the materials from? Thanks!

[etman]

I'm following this build thread.

http://www.rcgroups.com/forums/showthread.php?t=33639&page=14&pp=30#post16783406

I've bought the PVC pipes and glue from hardware store. (3/4" = 20 mm, 1" = 25 mm). There is a shop in King George's Ave selling PVC pipes.
If not PVC, wood also can, improvise lah.

The bungee, I placed order from H-K, but its out of stock at the moment.

3 @ 3/4" T
2 @ 3/4" X (four connection cross joiners)
5 @ 3/4" end caps
6 @ 3/4" 90's
4 @ 1" T's
4 @ 1" to 3/4" adapters
3 @ 10" 3/4" lengths of PVC
1 @ small can of PVC cement
2 @ 3/4" metal pipe brackets
1 @ 3/8" X 3" bolt (unthreaded for release pin)
2 @ 1" welded steel rings
3 feet nylon cord
10 feet foam pipe insulation
3 @ plasstic tent stakes heavy duty
20 feet bungee or surgical tubing