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#11
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Emfo vs. Jaxida covers
I have now Jaxida covers for my ASH26E. No problem of humidity inside
the engine bay because the doors are closely closed. I even think that without covers, no humidity would enter the engine bay. The problem is to protect the gelcoat against UV thanks to a cover. The new plastic layer from Jaxida is more fragile than the one I had some years ago. Now, only after 2 years, the plastic is becoming brittle. It seems to be at an end of life. Basically, the current Jaxida covers seems to have a lifetime of about 2 years while in the past, it was about 5 years.Considering the high price of Jaxida covers, I am not very happy to detect that my Jaxida covers are death only after 2 years. In addition, I did not wash them just for sparing them against potential aggressive soap. I received recently a sample from Emfo which seems to provide a more robust external plastic layer. In fact, Emfo provides some kind of tissue impregnated with a polymer. This external layer seems to be more resistant (mechanically). This would be my current best choice but the post from James D'Andrea worries me a little bit. I sent an email to the British company announced in a previous post. Still no answer. There is also another manufacturer in France named : Aerobache. See: http://www.aerobache.com/product_inf...roducts_id=178 In addition, they seems to have their product immediately for an ASH26E. But they seems also to be quite expensive. I asked them for a sample but did not reply. Important aspects are the conditions of use: In Belgium, I am using covers from March till end of September. Medium average temperature is about 20°C, we could have hot day with burning sun but most of the time we receive a lot of rain and associated humid weather from the UK. (NW winds). During winter, if samples are available I will try to be more professional by testing in an appropriate way (IEEE or MIL standards) the samples (UV resistance, humidity resistance etc) Cheers, Bruno |
#12
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Emfo vs. Jaxida covers
I have now Jaxida covers for my ASH26E. No problem of humidity inside
the engine bay because the doors are closely closed. I even think that without covers, no humidity would enter the engine bay. The problem is to protect the gelcoat against UV thanks to a cover. The new plastic layer from Jaxida is more fragile than the one I had some years ago. Now, only after 2 years, the plastic is becoming brittle. It seems to be at an end of life. Basically, the current Jaxida covers seems to have a lifetime of about 2 years while in the past, it was about 5 years.Considering the high price of Jaxida covers, I am not very happy to detect that my Jaxida covers are death only after 2 years. In addition, I did not wash them just for sparing them against potential aggressive soap. I received recently a sample from Emfo which seems to provide a more robust external plastic layer. In fact, Emfo provides some kind of tissue impregnated with a polymer. This external layer seems to be more resistant (mechanically). This would be my current best choice but the post from James D'Andrea worries me a little bit. I sent an email to the British company announced in a previous post. Still no answer. There is also another manufacturer in France named : Aerobache. See: http://www.aerobache.com/product_inf...roducts_id=178 In addition, they seems to have their product immediately for an ASH26E. But they seems also to be quite expensive. I asked them for a sample but did not reply. Important aspects are the conditions of use: In Belgium, I am using covers from March till end of September. Medium average temperature is about 20°C, we could have hot day with burning sun but most of the time we receive a lot of rain and associated humid weather from the UK. (NW winds). During winter, if samples are available I will try to be more professional by testing in an appropriate way (IEEE or MIL standards) the samples (UV resistance, humidity resistance etc) Cheers, Bruno |
#13
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Emfo vs. Jaxida covers
On Mon, 8 Sep 2008 08:25:10 -0700 (PDT), nimbus
wrote: .... Now, only after 2 years, the plastic is becoming brittle. It seems to be at an end of life. My 6 or 7 years old Jaxida set had lost all weatherproofing. The coating progressively turned into a white powder that was filling my clothes during the cover/uncover process. I have sprayed the whole (cleaned) set with two thin coats of a plastic paint called "Plastivel". The result is a different looking, slightly more rigid and crisp glider cover. No water passes through the fabric now, even under heavy rain. I still can easily store the set in its bags, though the sound is definetely different. The seller claims that the treatment will last for more than 3 years. It is in commont use on camp tents and for sealing toxic-painted aquarium decorations from the vital environment. My 18m single seater required 8 cans of spray paint for a total cost of about 60 Euros. Plastivel: http://www.bricoliamo.com/17/37/546/ http://www.costruire.com/a+r/prod_sx...0&w=1332&n=153 The following product might be a good alternative, though it's based on rubber instead of plastic. http://www.plastidip.com/home_solutions/Plasti_Dip Any other suggestions? Aldo Cernezzi |
#14
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Emfo vs. Jaxida covers
cernauta wrote:
On Mon, 8 Sep 2008 08:25:10 -0700 (PDT), nimbus wrote: ... Now, only after 2 years, the plastic is becoming brittle. It seems to be at an end of life. My 6 or 7 years old Jaxida set had lost all weatherproofing. The coating progressively turned into a white powder that was filling my clothes during the cover/uncover process. I have sprayed the whole (cleaned) set with two thin coats of a plastic paint called "Plastivel". The result is a different looking, slightly more rigid and crisp glider cover. No water passes through the fabric now, even under heavy rain. I still can easily store the set in its bags, though the sound is definetely different. A DG 800 pilot in my area added a layer of 1460 Tyvek (a form of Tyvek sold for the purpose of covering and protecting things that are outside) to the top side of his Jaxida covers, which had lost their top coating. He said it was cheap and easy to do, and the last I heard from him, the Tyvek was still in good condition after 2 years of leaving the glider tied down April through September. Here is where he got the material: www.materialconcepts.com My wife made me a set of lightweight covers for use during soaring camps and contests. She tells me it was easy to handle and to sew. -- Eric Greenwell - Washington State, USA * Change "netto" to "net" to email me directly * Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4 * New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more * "A Guide to Self-launching Sailplane Operation" at www.motorglider.org |
#15
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Emfo vs. Jaxida covers
On Sep 8, 8:25*am, nimbus wrote:
I have now Jaxida covers for my ASH26E. No problem of humidity inside the engine bay because the doors are closely closed. I even think that without covers, no humidity would enter the engine bay. [snip] Without covers I would suspect rain moves inside, through capillary action around the outer door seals and through the central opening. Of course measurements could make me think otherwise. With covers I would hope the primary moisture stays out but still would worry about this if the glider is in a high rain/moisture environment. As you know moisture and corrosion can be a concern if the engine is not operated frequently. Darryl |
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