I don't know, but my hopes are that one of the > netters has an informed > opinion and will share it with us.
Don't hold your breath on that. This leo guy is sure a messy builder - surprised that you say he made a nice kr. I see what you mean stephen - if the two meterials dont take the load together then one of them is technically just not there. I have read some of zeke Smith somewhere and remember that it was interesting. You seem to just ask questions all the time, are you making a kr or what I must soon choose between a kr or maybe a Fisher airplane - I want two seats. Thanks Edward --- Stephen Jacobs <ask...@microlink.zm> wrote: > You worry me when you say it is not good !!! > > who is zeke Smith > > +++++++++++++++++++++++++++++ > > Hey Ron - As the man always says, your results may > differ. > > I discussed my concerns with Eduardo (this took some > time as he speaks > Spanish and I speak English). He certainly is a > bright guy and appears > to have done his homework. Everything else he has > done is near perfect, > including anodizing his ali parts and making up his > own legs and leg > attachments, fuel tanks etc. One other South > American (Leo, he speaks > English) is doing similar things with a GP4, in this > case the wing was > originally designed for a ply skin, but Leo is doing > a KR wing type > skin, but staying with the original design spars. > http://www.geocities.com/leoadrena/GP4.html > > Leo built a nice KR before, so he has been around > DIY airplanes for a > while. > > Zeke Smith has written various books and articles on > composite > structures - I see him as knowledgeable in these > matters. If he > perceives a problem with mixing E-glass and Carbon > fibre in the same > lay-up due to the differences in stiffness (as > suggested in the extract > I included) - I must wonder to what extent the same > problem will be > present in Eduardo's Structure - he is mixing ply > with glass. > > For that matter, how wise is it for Leo to build the > wing sub-structure > (spars /ribs etc.) according to the plans and then > completely change the > wing skin from ply to mould-less composite (not even > a true sandwich)? > > > > My strong interest is with Eduardo's way - I suppose > the question really > is which is "stiffer", the spruce frame or the > foam/glass composite. > > If the Composite component of Eduardo's airplane is > stiffer and takes > the initial load, all is well (if the glass bit is > spec'd to do the > job.) The spruce frame goes along for the ride. > > If the spruce frame is stiffer and loads up first - > it may not be strong > enough without the ply skin and fail. > > We both seem to like his approach, so let me know if > you learn any more. > > Take care > Steve J > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to > krnet-le...@mylist.net > please see other KRnet info at > http://www.krnet.org/info.html > ___________________________________________________________ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com
