The KF 4 (small rudder)seems more stable in rough air, whereas the 3 needs constant rudder correction to counter the eileron inputs.If I was to rebuild my 3 I would consider the conversion.The big tail 1200 fox is a major leap forward in stability also. As a side note the performance of the 4 v's the 3 with a 582 is the same in all areas.
Can you hear the variation between left right (or front back), tacho error is normal . I tell 582 newbies the best place to look when doing a mag drop test is out the window! if there is a noticeable difference,plugs is the first item to look at as it gets more involved and expensive from there.
Its a late 670 with the ignition pickup at top.The cranks are even different to the early ones. I'm not sure how easy it is to convert the later ones to dual ignition.The early 670's have provision for dual pickups. The later engines arn't as easy to mount a gearbox to (welding required).I can't get enough detail from these photos to be sure on this one.
One of my Skystar fox labels was looking a bit tatty so I removed it.The glue stayed behind and isn't in a hurry to be removed! Any ideas? I believe the paint may be aerothane on polyfibre?petroleum has removed 90% .
The injected engines have a 2 piece rotary valve cover,remove the outer cover to remove the oil pump gear. If the engine has been run for any length of time with no oil in the pump I wouldn't trust it.these pumps are easy to strip but a replacement pump would be a safer option.
Jenki Coincidence! I was flying out of fielding which only 10 minutes drive from Palmerston North a few days ago. Milford is a great place,and even better in a kitfox.Christchurch is still recovering from the 2010 earthquake.The rebuild including roads and infrastructure is ongoing,I hope the council doesn't get sidetracked.
The P factor is definatly the noticeable but small difference.A slight variation on initial swing is evident but nothing that should be a problem.I have students that swap between a 582 and 912 without a problem. If your 582 powered machine is light be prepared, as it will be flying before you may be ready.