***** From: Arne Ansper <[EMAIL PROTECTED]> Original post from SALglider list by Mark Drela:
>From [EMAIL PROTECTED] Fri Jul 23 12:51:06 2004 To: [EMAIL PROTECTED] Subject: Re: Chamfered Mylar leading edge - helps wrap ***** Thanks very much for the update. This works - last night's bagging came out very well. I'm just trying to minimize my 'cleanup' of a LE when it comes out of the bag. This helped - along with fitting the mylars pretty snug as Phil recommends. Still working on the tip radius. For the tip radius, simply notching the mylar as a starting point didn't work. The idea was to relieve the compression a bit so the mylar could conform better to the compound curve (tip radius + LE radius). The mylars follow the tip radius very well and wrap around the LE but the notches don't allow any room for the mylar to decompress. Razor notches don't remove any material so this certainly makes sense (duh - in hindsight). You wind up with 3 or 4 bulges around the tip radius. Resin will 'puddle' a bit in these areas making it more difficult to finish the tip. Cutting the mylars back around the tip would have been better. But.... I've cut notches ~ 1/4" deep at the sites of the 4 bulges and will do the other tip tonight. Since I eventually use reflective tape my LEs, this isn't about getting the prettiest LE, just one that needs very little work after it's cured. We'll see. One problem with thinning the LE of the mylar, it can crack when removed. Although I had an excellent release, the little bit of resin that seeps around the edge trapped a small section of the tip mylar (right near one of those bulges). A small rip (~ 3/8") developed while removing the mylar in this area. I was trying to remove from LE to TE. If it had gone from TE to LE, it wouldn't have ripped. Thanks for the several replies on this topic. - Dave R RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
