Hi Samuel, The lightest KR2 ever built weighed 410 lbs. and it was pretty too. That was with a VW engine, no electrics. I would say that the average KR2 weighs around 600 lbs. Very few end up with a basic KR2.
So unless you are willing to go without electrics - and that means hand propping it - I would not bother tampering with the main spar, which is most probably the most important component on the airframe. Henni -----Original Message----- From: KRnet [mailto:krnet-boun...@list.krnet.org] On Behalf Of Samuel Ajayi via KRnet Sent: Tuesday, 14 November 2017 3:14 PM To: krnet@list.krnet.org Cc: Samuel Ajayi <soa...@hotmail.com> Subject: KR> More follow-up Apart from the KR2S folks, has anyone else replaced the wood spar with a composite "I" beam. After several hours of going over the KR plans, I still feel weight could be saved here. Though the build process is relatively simple, the spar itself appears to be an overkill. Now, that isn't necessarily bad but for an aircraft optimized for cruise on a small engine, every little bit counts. Also, how much speed can the KR fuselage withstand in a dive. At what speeds would the canoe become structurally unsafe ? I ask this because of the gentleman replaced his O-235 with an O-320. Or was the fuselage beefed up in advance for this engine upgrade. Thanks all -- Sent from myMail for Android _______________________________________________ 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
