Original Posted By: John Greenlee
I was curious about how the T88 I was using would do in the heat andhumidity here (101 F, 85%).(see previous discussion) And sure enoughmine was tacky and soft on top too. So I thought I would due somedestructive testing this weekend. I also thought I would use anotherstrong epoxy I've used very successfully before, the West brand ofmarine epoxy. I completed 2 tests of each type of epoxy on like woods(fir,hemlock) and both tests had the wood fail long before the epoxyjoint. And the West doesn't seem to get tacky at the same temp as theT88.Does anyone have experience building planes with West? What about FAAapproval of West?I'm sure going to save these two test samples for the FAA inspector if Ido use West. Wish I would have taken pictures....Curious in Kansas.....Greg Yotz________________________________________________________________________________
Pietenpol-List: Epoxy Alternatives....
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: Craig & Shari Hanson
Subject: Pietenpol-List: Re: Epoxy Alternatives....>> Yes I would like to use Raka epoxy about 30 bucks a gallon.>>I used Raka on a strip built canoe with good results. I would>suggest following the instructions and using measuring cups for>mixing. I found the pumps to be rather inaccurate. His prices>are 1/2 of West for epoxy and his glass prices are not too bad>either (at least when I bought a year ago). If you order from>Raka you need to decide what hardeners you want. His normal for>a 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast and>slow hardeners. Mix the hardeners to control the kick time. They>are all rather slow in a thin film but I did melt the bottom out of>a mixing cup when a blob fired off.>>Dave>>________________________________________________________________________________
Subject: Pietenpol-List: Re: Epoxy Alternatives....>> Yes I would like to use Raka epoxy about 30 bucks a gallon.>>I used Raka on a strip built canoe with good results. I would>suggest following the instructions and using measuring cups for>mixing. I found the pumps to be rather inaccurate. His prices>are 1/2 of West for epoxy and his glass prices are not too bad>either (at least when I bought a year ago). If you order from>Raka you need to decide what hardeners you want. His normal for>a 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast and>slow hardeners. Mix the hardeners to control the kick time. They>are all rather slow in a thin film but I did melt the bottom out of>a mixing cup when a blob fired off.>>Dave>>________________________________________________________________________________
Pietenpol-List: Epoxy Alternatives....
Original Posted By: dswagler(at)cobkf.ang.af.mil
I was curious about how the T88 I was using would do in the heat andhumidity here (101 F, 85%).(see previous discussion) And sure enoughmine was tacky and soft on top too. So I thought I would due somedestructive testing this weekend. I also thought I would use anotherstrong epoxy I've used very successfully before, the West brand ofmarine epoxy. I completed 2 tests of each type of epoxy on like woods(fir,hemlock) and both tests had the wood fail long before the epoxyjoint. And the West doesn't seem to get tacky at the same temp as theT88.Does anyone have experience building planes with West? What about FAAapproval of West?I'm sure going to save these two test samples for the FAA inspector if Ido use West. Wish I would have taken pictures....Curious in Kansas.....Greg Yotz________________________________________________________________________________
I was curious about how the T88 I was using would do in the heat andhumidity here (101 F, 85%).(see previous discussion) And sure enoughmine was tacky and soft on top too. So I thought I would due somedestructive testing this weekend. I also thought I would use anotherstrong epoxy I've used very successfully before, the West brand ofmarine epoxy. I completed 2 tests of each type of epoxy on like woods(fir,hemlock) and both tests had the wood fail long before the epoxyjoint. And the West doesn't seem to get tacky at the same temp as theT88.Does anyone have experience building planes with West? What about FAAapproval of West?I'm sure going to save these two test samples for the FAA inspector if Ido use West. Wish I would have taken pictures....Curious in Kansas.....Greg Yotz________________________________________________________________________________
Pietenpol-List: re: Epoxy Alternatives....
Original Posted By: Ken Beanlands
Another epoxy-related question.I have a set of ultralight plans from Midwest Engineering. The wings are foam ribs with foam sheeting over spruce spars. They say to coat the foam with epoxy before applying the fabric. The plans call for SafetyPoxy (sp) throughout.Is the West system thin enough to brush on for this application? T-88 and SafetyPoxy are very viscous when mixed in the appropriate ratios. Seems like a pain.dms________________________________________________________________________________
Another epoxy-related question.I have a set of ultralight plans from Midwest Engineering. The wings are foam ribs with foam sheeting over spruce spars. They say to coat the foam with epoxy before applying the fabric. The plans call for SafetyPoxy (sp) throughout.Is the West system thin enough to brush on for this application? T-88 and SafetyPoxy are very viscous when mixed in the appropriate ratios. Seems like a pain.dms________________________________________________________________________________
Pietenpol-List: re: Epoxy Alternatives....
Original Posted By: jmcnarry(at)techplus.com (John McNarry)
I've used all three. The West System is definitely the thinnest especiallyif you use the special coating harfener (207C I believe). T-88 is by farthe thickest. Safety-Poxy II is close to the viscosity of West System. Ofcourse, the viscosity of any of these products can be lowered by heatingup the liquids. Be prepared for quicker setting times though.KenOn Tue, 25 Aug 1998 dswagler(at)cobkf.ang.af.mil wrote:> Another epoxy-related question.> Is the West system thin enough to brush on for this application? T-88 and > SafetyPoxy are very viscous when mixed in the appropriate ratios. Seems > like a pain.> > dms> ________________________________________________________________________________
I've used all three. The West System is definitely the thinnest especiallyif you use the special coating harfener (207C I believe). T-88 is by farthe thickest. Safety-Poxy II is close to the viscosity of West System. Ofcourse, the viscosity of any of these products can be lowered by heatingup the liquids. Be prepared for quicker setting times though.KenOn Tue, 25 Aug 1998 dswagler(at)cobkf.ang.af.mil wrote:> Another epoxy-related question.> Is the West system thin enough to brush on for this application? T-88 and > SafetyPoxy are very viscous when mixed in the appropriate ratios. Seems > like a pain.> > dms> ________________________________________________________________________________
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: flyer(at)clas.net
The West epoxy will last a little longer if you spread your batch in shallowpan. I discovered this while using it last year repairing a conopy on aStitts Flutterbug. I suspect that the exothermic reaction is slowed down bythe mass being spread out. I also used small plastic syringes a 50cc and a6cc to dispense the components. This allowed me to mix smaller batches whengluing up small parts. I really like the west system and had no adversereactions to it with moderate protection. ie latex gloves.John Mc________________________________________________________________________________
The West epoxy will last a little longer if you spread your batch in shallowpan. I discovered this while using it last year repairing a conopy on aStitts Flutterbug. I suspect that the exothermic reaction is slowed down bythe mass being spread out. I also used small plastic syringes a 50cc and a6cc to dispense the components. This allowed me to mix smaller batches whengluing up small parts. I really like the west system and had no adversereactions to it with moderate protection. ie latex gloves.John Mc________________________________________________________________________________
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: Dave and Connie
Yes I would like to use Raka epoxy about 30 bucks a gallon.Iv'e heard that premixing batch with small amount of hardnerexample 6parts resin 1 part hardner will thicken increasing vicousitythen adding two more parts hardner when ready to use allows gap filling and a clear glue without the use of fillers similarto using t-88, has anyone had experience with this? Also has anyone used epoxy to glue dacron to wing ribs? orwill the epoxy soften when using iron to shrink cloth and become a mess?________________________________________________________________________________
Yes I would like to use Raka epoxy about 30 bucks a gallon.Iv'e heard that premixing batch with small amount of hardnerexample 6parts resin 1 part hardner will thicken increasing vicousitythen adding two more parts hardner when ready to use allows gap filling and a clear glue without the use of fillers similarto using t-88, has anyone had experience with this? Also has anyone used epoxy to glue dacron to wing ribs? orwill the epoxy soften when using iron to shrink cloth and become a mess?________________________________________________________________________________
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: "D.J.H."
> Yes I would like to use Raka epoxy about 30 bucks a gallon.I used Raka on a strip built canoe with good results. I would suggest following the instructions and using measuring cups formixing. I found the pumps to be rather inaccurate. His pricesare 1/2 of West for epoxy and his glass prices are not too badeither (at least when I bought a year ago). If you order fromRaka you need to decide what hardeners you want. His normal fora 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast andslow hardeners. Mix the hardeners to control the kick time. Theyare all rather slow in a thin film but I did melt the bottom out ofa mixing cup when a blob fired off.Dave________________________________________________________________________________
> Yes I would like to use Raka epoxy about 30 bucks a gallon.I used Raka on a strip built canoe with good results. I would suggest following the instructions and using measuring cups formixing. I found the pumps to be rather inaccurate. His pricesare 1/2 of West for epoxy and his glass prices are not too badeither (at least when I bought a year ago). If you order fromRaka you need to decide what hardeners you want. His normal fora 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast andslow hardeners. Mix the hardeners to control the kick time. Theyare all rather slow in a thin film but I did melt the bottom out ofa mixing cup when a blob fired off.Dave________________________________________________________________________________
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: Dave and Connie
Yes did a test on two pieces of yello pine with my raka epoxyboth about 1.5'' in width glued about 1" square area pre soaking thenmixing with silca no clamping just stuck together let set over night,had to put in vise and repeated heavy blows with hammer, pulledout large amount of wood, didn't bother to clean dirty scrap yellow pinewhich is more dense than spruce. I now feel comfortableusing this glue as long as the ambient temperature is below 130 degrees.-----Original Message-----
Yes did a test on two pieces of yello pine with my raka epoxyboth about 1.5'' in width glued about 1" square area pre soaking thenmixing with silca no clamping just stuck together let set over night,had to put in vise and repeated heavy blows with hammer, pulledout large amount of wood, didn't bother to clean dirty scrap yellow pinewhich is more dense than spruce. I now feel comfortableusing this glue as long as the ambient temperature is below 130 degrees.-----Original Message-----
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By:> Dave and Connie
How do I contact this Raka company for price list and info???Greg Yotzrussell ray wrote:> Yes did a test on two pieces of yello pine with my raka epoxy> both about 1.5'' in width glued about 1" square area pre soaking then> mixing with silca no clamping just stuck together let set over night,> had to put in vise and repeated heavy blows with hammer, pulled> out large amount of wood, didn't bother to clean dirty scrap yellow pine> which is more dense than spruce. I now feel comfortable> using this glue as long as the ambient temperature is below 130 degrees.> -----Original Message-----
How do I contact this Raka company for price list and info???Greg Yotzrussell ray wrote:> Yes did a test on two pieces of yello pine with my raka epoxy> both about 1.5'' in width glued about 1" square area pre soaking then> mixing with silca no clamping just stuck together let set over night,> had to put in vise and repeated heavy blows with hammer, pulled> out large amount of wood, didn't bother to clean dirty scrap yellow pine> which is more dense than spruce. I now feel comfortable> using this glue as long as the ambient temperature is below 130 degrees.> -----Original Message-----
Pietenpol-List: Re: Epoxy Alternatives....
Original Posted By: Craig & Shari Hanson
>How do I contact this Raka company for price list and info???>>Greg Yotz>Raka has gone big time and has moved his web site to:http://www.raka.com/Dave_______________ ... __________
>How do I contact this Raka company for price list and info???>>Greg Yotz>Raka has gone big time and has moved his web site to:http://www.raka.com/Dave_______________ ... __________
> Re: Epoxy Alternatives....
Original Posted By: Dave and Connie
> Subject: Re: Epoxy Alternatives....>> >> Yes I would like to use Raka epoxy about 30 bucks a gallon.> >> >I used Raka on a strip built canoe with good results. I would> >suggest following the instructions and using measuring cups for> >mixing. I found the pumps to be rather inaccurate. His prices> >are 1/2 of West for epoxy and his glass prices are not too bad> >either (at least when I bought a year ago). If you order from> >Raka you need to decide what hardeners you want. His normal for> >a 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast and> >slow hardeners. Mix the hardeners to control the kick time. They> >are all rather slow in a thin film but I did melt the bottom out of> >a mixing cup when a blob fired off.> >> >Dave> >> >________________________________________________________________________________
> Subject: Re: Epoxy Alternatives....>> >> Yes I would like to use Raka epoxy about 30 bucks a gallon.> >> >I used Raka on a strip built canoe with good results. I would> >suggest following the instructions and using measuring cups for> >mixing. I found the pumps to be rather inaccurate. His prices> >are 1/2 of West for epoxy and his glass prices are not too bad> >either (at least when I bought a year ago). If you order from> >Raka you need to decide what hardeners you want. His normal for> >a 3 gallon kit is 2 gallons of resin, 1/2 gallon each of fast and> >slow hardeners. Mix the hardeners to control the kick time. They> >are all rather slow in a thin film but I did melt the bottom out of> >a mixing cup when a blob fired off.> >> >Dave> >> >________________________________________________________________________________