Hi Steve As every KR2 is customised, where other KR2 firewalls and engine mount lengths are, can only be used as a guide, you have to work out your own engine placement to suit your C of G.
I am assuming that your engine is mounted and the installation completed. To work out where your engine should be do a weights and balance to workout your C of G. Add 5kg for the proposed cowl with a moment arm to the centre of the cowl. Also add on any thing that has to still be added to the aircraft and it's momement arm (ie: battery, exhaust, etc). With these messurements you can work out if you have to move your engine. To get an idear how I did mine when I re-engined my KR2 checkout my weights and balances WEB page http://www.users.bigpond.com/kr2/w_and_b.htm particularly the spreadsheet for fitting the new Jabiru 2200 engine http://www.users.bigpond.com/kr2/Doco/My_W_and_B.xls. Any questions, contact me off net Regards Barry Kruyssen Cairns, Australia k...@bigpond.com http://www.users.bigpond.com/kr2/kr2.htm -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Steve Bray Sent: Tuesday, 10 October 2006 12:43 PM To: kr...@mylist.net Subject: KR> Engine spacers Hello I'm at the point of working on my cowling and have to make a decision on my engine placement. I have not as yet weighed my airplane and know that will be the next thing but I can't find anywhere in my plans anything about the spacers I have that go between the engine and mount. I have a partially completed plane that came with the spacers and a nose gear but I noticed at the gathering that some of your firewalls are forward a couple of inches of mine. Some of you use spacers and some don't, some of you put spacers between the firewall and engine mount. What's the deal here ? Are there some changes in newer plans to move the firewall forward ? When I push down on the tail it takes a lot of pressure to lift the nose and if I move the engine forward it will be even more so. We are talking about a KR-2 with a VW Revmaster nose gear. Thanks, Steve Bray
