Original Posted By: kyle ray
Subject: Pietenpol-List: Re: Streamlined tube>I ain't no engineer but......>>If you run the numbers out for either 1020 or 4130 type steel you'll gain>some confidence that a quite small in section streamline tube will carry a>Piet. I bet you'll figure the small tubes from a Cub are P L E N T Y>strong. The main thing is to inspect carefully for rust and corrosion.>>Remember that when the Piets originated aircraft steel was 1020.>>Some of the ones I've seen flying have pretty small tubes. I've neverheard>of a streamline tube failing (other than from negative gs) and causing an>accident in a Piet.>>John>>>-----Original Message----->From: wayne >To: Pietenpol Discussion >Date: Thursday, June 03, 1999 7:30 PM>Subject: Streamlined tube>>>>>> Two questions. I've got a good stock of streamlined struts from cubs.Is>>this likely to be 4130 or 1018/1020? Any easy way to tell? I'd like to>>use some for the gear struts also. I think Domenic said he used>>streamlined - what size did you use? I Think the standard wing strut>>material would be too light but perhaps if one was welded inside the other>>to double the thickness it would be sufficient. What's the group opinion>>here?>> For the corvair users are you staying with single or going dual ignition?>>>>Wayne Sippola, Winnipeg>>>________________________________________________________________________________