Re: KR> Composite foam repair, fiberglassing
Check out some of my repairs... they may not apply but it is how we repaired damages to the structure by the previous owner and what we did to repair them. https://www.youtube.com/watch?v=1Zp2PPYQTV8&t=431s KR2S Stub Wing repair | | | | | | | | | | | KR2S Stub Wing repair Previous owner put holes in the wing and we had to repairto get the airplane flying again. Here is the method we... | | | https://www.youtube.com/watch?v=0rcDvXOsPTI Luis R Claudio, KR2S On Monday, August 27, 2018 12:16:44 AM CDT, Lee Shook via KRnet wrote: Thkyou Jeff, appreciate the clarification on resins, I will make sure I verify what resin I have, and apply accordingly. Cheers. Sent from my iPhone > On Aug 26, 2018, at 6:35 PM, Jeff Scott via KRnet > wrote: > > > The pink foam is undoubtedly a polystyrene foam, but it sounds like you are > using a polyester or vinylester based resin where you are mixing MEKP as a > catalyst. That will melt polystyrene on contact. While vinylester resin is > acceptable, you can't use it over a polystyrene foam. It does work with > polyUrethane foam. If you have polyester resin, you shouldn't be using it at > all. Use an epoxy based resin as it will not react with the foam. If you > read the plans, you should be using a slurry of microballoons mixed with > epoxy resin to a peanut butter like consistency as a base over the foam to > lay up your glass repair over the holes. It's all in the plans for building > the plane. > > -Jeff Scott > Cherokee Village, AR > > On 8/26/2018 7:23 PM, Lee Shook via KRnet wrote: > > I put resin on the foam and it started to deform. Kinda at a stand still. > > + > > Sounds like you need to contact the builder and get info on what > materials he used. Sounds like a compatibility problem. That one is > beyond my ability to help. Pink foam that deforms with epoxy contact, > huum... > > What was used to do the original layup? > > Larry Flesner > > > > ___ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
Thkyou Jeff, appreciate the clarification on resins, I will make sure I verify what resin I have, and apply accordingly. Cheers. Sent from my iPhone > On Aug 26, 2018, at 6:35 PM, Jeff Scott via KRnet > wrote: > > > The pink foam is undoubtedly a polystyrene foam, but it sounds like you are > using a polyester or vinylester based resin where you are mixing MEKP as a > catalyst. That will melt polystyrene on contact. While vinylester resin is > acceptable, you can't use it over a polystyrene foam. It does work with > polyUrethane foam. If you have polyester resin, you shouldn't be using it at > all. Use an epoxy based resin as it will not react with the foam. If you > read the plans, you should be using a slurry of microballoons mixed with > epoxy resin to a peanut butter like consistency as a base over the foam to > lay up your glass repair over the holes. It's all in the plans for building > the plane. > > -Jeff Scott > Cherokee Village, AR > > On 8/26/2018 7:23 PM, Lee Shook via KRnet wrote: > > I put resin on the foam and it started to deform. Kinda at a stand still. > > + > > Sounds like you need to contact the builder and get info on what > materials he used. Sounds like a compatibility problem. That one is > beyond my ability to help. Pink foam that deforms with epoxy contact, > huum... > > What was used to do the original layup? > > Larry Flesner > > > > ___ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
The pink foam is undoubtedly a polystyrene foam, but it sounds like you are using a polyester or vinylester based resin where you are mixing MEKP as a catalyst. That will melt polystyrene on contact. While vinylester resin is acceptable, you can't use it over a polystyrene foam. It does work with polyUrethane foam. If you have polyester resin, you shouldn't be using it at all. Use an epoxy based resin as it will not react with the foam. If you read the plans, you should be using a slurry of microballoons mixed with epoxy resin to a peanut butter like consistency as a base over the foam to lay up your glass repair over the holes. It's all in the plans for building the plane. -Jeff Scott Cherokee Village, AR On 8/26/2018 7:23 PM, Lee Shook via KRnet wrote: > I put resin on the foam and it started to deform. Kinda at a stand still. + Sounds like you need to contact the builder and get info on what materials he used. Sounds like a compatibility problem. That one is beyond my ability to help. Pink foam that deforms with epoxy contact, huum... What was used to do the original layup? Larry Flesner ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
On 8/26/2018 7:23 PM, Lee Shook via KRnet wrote: I put resin on the foam and it started to deform. Kinda at a stand still. + Sounds like you need to contact the builder and get info on what materials he used. Sounds like a compatibility problem. That one is beyond my ability to help. Pink foam that deforms with epoxy contact, huum... What was used to do the original layup? Larry Flesner ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
I have cut the fiberglass out, have the pink foam showing, just wondering what I use to adhere to the foam then fiberglass over top, I put resin on the foam and it started to deform. Kinda at a stand still. Sent from my iPhone > On Aug 26, 2018, at 5:16 PM, Flesner via KRnet wrote: > >> On 8/26/2018 6:20 PM, Lee Shook via KRnet wrote: >> Hello gentlemen, newbe to the forum, bought a kr2s that has three mall areas >> the size of a mans hand where the fiberglass has delaminated from the foam >> composite. What product does a person use to adhere the fiberglass to the >> foam to repair these areas? Thks in advance > > + > > IF, IF, IF, these delaminated spots are not in contact with wood structure > anywhere (spars), strictly foam, and IF they can be pressed flat, then I'd > inject some epoxy, using a syringe, under the glass, press flat, and let > cure. A number of KR's I've seen have some small "bubbles" appear that seem > to be caused by poor adhesion and foam gassing. Some times they go away on > their own, sometimes not, and the owner just flies it that way. > > As always. your results may vary > > Larry Flesner > > > ___ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
On 8/26/2018 6:20 PM, Lee Shook via KRnet wrote: Hello gentlemen, newbe to the forum, bought a kr2s that has three mall areas the size of a mans hand where the fiberglass has delaminated from the foam composite. What product does a person use to adhere the fiberglass to the foam to repair these areas? Thks in advance + IF, IF, IF, these delaminated spots are not in contact with wood structure anywhere (spars), strictly foam, and IF they can be pressed flat, then I'd inject some epoxy, using a syringe, under the glass, press flat, and let cure. A number of KR's I've seen have some small "bubbles" appear that seem to be caused by poor adhesion and foam gassing. Some times they go away on their own, sometimes not, and the owner just flies it that way. As always. your results may vary Larry Flesner ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
Re: KR> Composite foam repair, fiberglassing
Emphasizes you're talking about. The best thing to do is cut out the delaminated fiberglass and reapply new glass and not to try to reattach the old glass. Paul ViskBelleville Il.618-406-4705 Original message From: Lee Shook via KRnet Date: 8/26/18 6:20 PM (GMT-06:00) To: KRnet Cc: Lee Shook Subject: KR> Composite foam repair, fiberglassing Hello gentlemen, newbe to the forum, bought a kr2s that has three mall areas the size of a mans hand where the fiberglass has delaminated from the foam composite. What product does a person use to adhere the fiberglass to the foam to repair these areas? Thks in advance Sent from my iPhone > On Aug 26, 2018, at 2:10 PM, Mark Wegmet via KRnet > wrote: > > To those of you that fly (actually takeoff, land, and taxi) with a tail > wheel set up, if you built one again from scratch, how would you do it and > which set up (brand/type) would you use? > > Thanks for your time. > > Regards, > > Mark W. > N952MW (res) have almost all the parts! > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ___ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
KR> Composite foam repair, fiberglassing
Hello gentlemen, newbe to the forum, bought a kr2s that has three mall areas the size of a mans hand where the fiberglass has delaminated from the foam composite. What product does a person use to adhere the fiberglass to the foam to repair these areas? Thks in advance Sent from my iPhone > On Aug 26, 2018, at 2:10 PM, Mark Wegmet via KRnet > wrote: > > To those of you that fly (actually takeoff, land, and taxi) with a tail > wheel set up, if you built one again from scratch, how would you do it and > which set up (brand/type) would you use? > > Thanks for your time. > > Regards, > > Mark W. > N952MW (res) have almost all the parts! > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ___ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
