Just one correction - CASA has proposed the restrictions, they haven't introduced them yet and hopefully they never will. Just the proposal alone has been damaging enough, and the way CASA has gone about addressing this problem (if indeed there is a problem - which they've acknowledged they don't actually know) is a classic example of a bureaucracy with too much power and too little accountability. Unlike the FAA, the promotion of aviation is not part of CASA's charter. Many people joke that CASA regards only aircraft that never fly as being safe enough, but they could actually implement such a policy (i.e. ground everything) without violating their charter.
TK On 30 November 2014 at 05:39, Mike Stirewalt via KRnet <krnet at list.krnet.org > wrote: > Someone commented recently on the forum that CASA (Australian FAA) has > limited Jabiru-powered aircraft to day VFR. Most Jabiru powered planes > are already used in that environment as trainers or light sport designs > but for those who want to use their Jabiru-powered airplane as a normal > airplane - tough luck if you live in Australia. CASA's new restrictions > include no carrying of passengers, no solo students, and no flying over > populous areas. > > http://www.casa.gov.au/wcmswr/_assets/main/newrules/download/spc-cd1425ss > .pdf > > "Seems like the major problems are still the through bolts (rolled vs cut > threads), valve guides and crankcase fretting." (from pprune.org forum) > > Apparently rings & pistons & exhaust valves are frequent culprits with > Jab engine failures. > > Paul Hanson with my local Chapter 14 finally sold his Wittman Tailwind > with a Jab 3300 after continually having valve seats come out. The buyer > is putting in another, (different make) engine. > > It would be interesting to talk to Richard Shirley about his 3300. > > Many flight schools who use Jabirus run their engines, at least some of > them, all the way to TBO. And Colin has flown lots of miles with his > 2200 so he would be another person with whom to discuss his thoughts on > the subject. > > What is "crankcase fretting?" I'm having trouble visualizing this but > this is when the crankcase "swells" and squeezes the crankcase journals > so tightly that the engine won't turn after shutdown until it has had a > chance to cool. Naturally something like this, besides causing > horrendous bearing wear, eventually leads to a cracked crankcase. It > happens on some runs of the 4-stroke Rotax engine too I'm reading. > > Dealing with maintenance issues like these on both the Jabiru and Rotax > are amazingly expensive for new parts. Not even on the same planet VW > and Corvair. > > Mike > KSEE > ____________________________________________________________ > What's your flood risk? > Find flood maps, interactive tools, FAQs, and agents in your area. > http://thirdpartyoffers.juno.com/TGL3141/547a213db80da213c2ed1st04vuc > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
