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#1
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At 15:36 19 December 2003, Jj Sinclair wrote:
OR use *stick-on* numbers this time. Don't stick them on the wings! They really F**K the performance up . Trust me, Been there , Done that. |
#2
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Mark Wright wrote:
Don't stick them on the wings! They really F**K the performance up . Trust me, Been there , Done that. How did you determine this? |
#3
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must have come off in flight? or at least lifted a leading edge..
not stuck on right? BT "Marc Ramsey" wrote in message . .. Mark Wright wrote: Don't stick them on the wings! They really F**K the performance up . Trust me, Been there , Done that. How did you determine this? |
#4
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![]() "BTIZ" wrote in message news:KyMEb.30176$m83.14271@fed1read01... must have come off in flight? or at least lifted a leading edge.. not stuck on right? BT "Marc Ramsey" wrote in message . .. Mark Wright wrote: Don't stick them on the wings! They really F**K the performance up . Trust me, Been there , Done that. How did you determine this? You might want to take a look at: http://www.ssa.org/Johnson/90-1998-05.pdf It's about an SZD-55, but there's a discussion in it on the effects of vinyl contest numbers. Tim Ward |
#5
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I'm having mylar seals fitted to my glider over winter. I elected to have
them stuck on the wing rather than rebated into it (partly for cost, partly because you can't undo a rebate) and they are thicker than vinyl letters, but set much further back. Anybody got any experience on the impact of mylar seals on wing performance and whether it's important to rebate them. Is it more important for the upper surface rather than the lower? "Mark Wright" wrote in message ... At 15:36 19 December 2003, Jj Sinclair wrote: OR use *stick-on* numbers this time. Don't stick them on the wings! They really F**K the performance up . Trust me, Been there , Done that. |
#6
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Simon,
I can give you one data point. My early LS-6 came with only the bottom of the wing sealed (mylar type, venetian blind, I think) Anyway, she didn't get her killer climb, until I added mylar to the top of the wing. These were just stuck on and not recessed into the wing. As a general rule, I would say that recessing is better, but a bunch of work and if done by unskilled hands, could result in a mess. Use trailing edge guides on your router and monitor the depth very closely. Before you start, I would lay a straight edge across the wing / aileron juncture, see if lowering the wing side (routing out) will cause the mylar to be forced up as it hits the aileron. This should not be allowed and will lead to mylar separation when left in a hot trailer. BTW, the mylar width should be just wide enough to just touch the control surface and shouldn't be forced up when the control surface is moved. If hinge gaps are too wide to allow the mylar to completely cover the gaps, then use a *gap bridge* made of thin plastic or wide tape. Thake a good look at an ASW-27, Schleicher's attention to detail is something to behold and the cleanest set-up I have seen. JJ Sinclair |
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