I have not built mine yet, but I did have some ideas in mind. I bought some 5" wide unidirectional tape from Aircraft Spruce. It is currently $1.58 per foot. I bought 10' figuring I would fold it in half or cut it and get get all the plies I would need and more. I was going to make myself a nice "S" shaped curve out of foam. I figured that I would lay up the layers flat on some peelply, put another layer on the top, then just let it drape on my foam piece and take that shape as it cures.
I was planning on putting in some unidirectional tape one every five or six layers and on the top and bottom to keep it from tending to split at the bolt holes. Probably just use fiberglass for those layers since I already have it. I will probably have mine taper down in thickness as it gets closer to the tailwheel by using progressively shorter pieces as I do the layup. I also figured that I would make the whole thing a little wider than I need and finish it to size with a belt sander instead of trying to get good straight sides during the layup. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Randolph R. Clark Sent: Sunday, February 11, 2007 9:14 PM To: KRnet Subject: Re: KR> carbon fibre tail spring Reply about tailwheel thickness using cf. I built my tailwheel spring of about 12 inches using 28 layers of 6 oz. cloth alternating unidirectional and bidirectional cloth, app. 8mm thick. It has worked great. I land on grass alot and it has taken the abuse well. Randy Clark rrcl...@carrollsweb.com _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
