sonofjim Posted May 8, 2009 Share Posted May 8, 2009 hi chaps i recall over on the wingnut wings thread hier von buckle was asking about availabilty off kevlar thread to replicate aerodynamic rigging i just recieved my roll of kevlar thread from cliff harvey angling looks great nice and smooth not fluffy seems would react to a hot blade for tightening (not sure though) and is well flat , just thought i'd whack this in here in case anyone else is struggling to find it i know its on evilbay too but i dont go there my apologis if you chapsalready know a source but the service was excellent Jim Link to comment Share on other sites More sharing options...
Mike Posted May 8, 2009 Share Posted May 8, 2009 I sourced some from eBay myself recently, thinking it might be useful, but I would venture to suggest that it might be too thick for anything below 1:32 scale. I think I'll be using mine to simulate para-cord on tie-downs on my AFV models. Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 yes mike i agree i was thinking 1/32 scale for the wingnut wings stuff . Link to comment Share on other sites More sharing options...
AnonymousFY21 Posted May 8, 2009 Share Posted May 8, 2009 If what you have bought is a pure Aramid, then yes it will conract longitudinally, but expand transversely. The amount however is very small and will not be a permanent state. It will expand and contract as the temperature rises and falls, but as I said by a very small amount. The info I have here says about -2X10-6/oC as a percentage of the original length. Also bear in mind that Aramids (Kevlar is a trade name only) are hydrophylic and will suck up moisture readily. If this Kevlar is not just fibre but in a resin, be very careful. Most thermoset resins don't like a lot of heat, and you won't end up with what you expected rich Link to comment Share on other sites More sharing options...
Mike Posted May 8, 2009 Share Posted May 8, 2009 Someone said that sunlight weakens it too. I'm sure by 50% in one year... is that the case? Link to comment Share on other sites More sharing options...
AnonymousFY21 Posted May 8, 2009 Share Posted May 8, 2009 Yep it's sensative to UV. We have a large roll, and if you take some off you can almost watch the surface change colour on the newly exposed fabric. rich Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 Sheesh i was only routing out a source as per discussed over on the wingnut wings thread Link to comment Share on other sites More sharing options...
AnonymousFY21 Posted May 8, 2009 Share Posted May 8, 2009 Only trying to be helpful, sorry. rich Link to comment Share on other sites More sharing options...
Iain Ogilvie Posted May 8, 2009 Share Posted May 8, 2009 Well... sonofjim - I'm really glad you started the thread (no pun intended) as I'd never come across it in that format... richc - and I'm really pleased you gave some background info on material properties... Thanks both... I may have a use for this on my sub Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 Only trying to be helpful, sorry.rich my apologies Rich flipping kicking myself now i had a pun to go with my reply but only hacked off half the message :shithappens:didnt mean to sound arsey mate . was going to add also would it protect it some how if it were painted ? seriously sounds like you know your stuff mate was genuinley interested . joke wouldnt work now mate so please feel free to me jim Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 Well...sonofjim - I'm really glad you started the thread (no pun intended) as I'd never come across it in that format... richc - and I'm really pleased you gave some background info on material properties... Thanks both... I may have a use for this on my sub thanks mate looks like inteseting stuff its a totally new area for me and maybe we could have explored a few things if i didnt inadvetantly shoot Rich it remains to be seen whats its weaknesses are i'll give it go though Link to comment Share on other sites More sharing options...
AnonymousA667 Posted May 8, 2009 Share Posted May 8, 2009 maybe we could have explored a few things if i didnt inadvertently shoot Rich For him to display such outstanding nerd credentials, you may have done him a favour. That's likely to cost me a curry at Telford... peebeep Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 For him to display such outstanding nerd credentials, you may have done him a favour. That's likely to cost me a curry at Telford... peebeep Link to comment Share on other sites More sharing options...
Jennings Heilig Posted May 8, 2009 Share Posted May 8, 2009 So getting back to the subject at hand - if one were to apply some kind of coating (ie: paint) to this kevlar thread, would that suffice to protect it from harmful UV rays? And if the UV weakens it, but it's not structural, is it eventually going to turn to kevlar dust anyway? If I'm not asking it to support anything, I really don't care how strong it is, do I? J Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 So getting back to the subject at hand - if one were to apply some kind of coating (ie: paint) to this kevlar thread, would that suffice to protect it from harmful UV rays? And if the UV weakens it, but it's not structural, is it eventually going to turn to kevlar dust anyway? If I'm not asking it to support anything, I really don't care how strong it is, do I?J J , speaking to rich via pm he says paint it would protect it from uv but it wouldnt stop it suckng moisture which from what i can gather is its main weakness and thus would eventually sag ? Link to comment Share on other sites More sharing options...
AnonymousFY21 Posted May 8, 2009 Share Posted May 8, 2009 (edited) For him to display such outstanding nerd credentials, you may have done him a favour. That's likely to cost me a curry at Telford... peebeep Thanks Paul, I accept So getting back to the subject at hand - if one were to apply some kind of coating (ie: paint) to this kevlar thread, would that suffice to protect it from harmful UV rays? And if the UV weakens it, but it's not structural, is it eventually going to turn to kevlar dust anyway? If I'm not asking it to support anything, I really don't care how strong it is, do I?J No it won't turn to dust, well not for a very long time. As Jim says the worst aspect of Kevlar is it's insatiable thirst for moisture. I'm intrigued by the fact you can get different colours, as aramids are yellow by nature. I wonder if the stuff linked to has some form of UV protection applied. I'm not sure if it can be dyed or not, not something I've ever tried. I'm sending Jim some stuff to play about with, so I'll let him be the judge of that and report on here. rich Edited May 8, 2009 by richc Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 Rich was going to mention , now i've played around with the thread i have, its almost like a steel colour it has a metallic sheen to it ,maybe its mixed with some other thread ? and not 100% kevlar its quite thin too its flattest around 1mm in width , but i presume you can get different diameters ? if you rub it along your fingers some of the dye comes of (its actually like graphite) but i guess thats just the fact its a black dye Link to comment Share on other sites More sharing options...
Bobs_Buckles Posted May 8, 2009 Share Posted May 8, 2009 Sonofjim, Cheers for the info. Herr Von Buckle Link to comment Share on other sites More sharing options...
sonofjim Posted May 8, 2009 Author Share Posted May 8, 2009 Sonofjim, Cheers for the info. Herr Von Buckle no problem Bob looks like its a nice bit of kit and rowsing around the net a lot of serious ww1 modellers seem to really like it i'll give it a go . Link to comment Share on other sites More sharing options...
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