ricky m

I am getting an ocasional misfire from my jabiru when on full power climb.. Thought was carb ice first then found choke not fully shutting off so thought that be prob, but happend again today ok on first take of but presented problem on 2nd take seem to be second take off as first time flew to place departed miss... Second time took off done a pfl missed on climb.. 3rd time today flew to place took off 2 hours later missed... Cht all good rpm good oil temp good electric pump on... Thanks ricky.. Enginge 78 hrs since overhual run on bp 98..

No - Armidale NSW

Are u in armadale wa?

Yeah I have to admit I was BMAA board member and did organise and run the Round Britain Rally one year ;-)Oh and the Raven in the profile pic was Rob Keens comp raven ...

LOL when then, ask Paul D what its like when the tension is lost out of the trailing edge of a Q wing - he had a leading edge web fail on a peg Q on a permit test flight and his description of the handling change made me thankful not to have been involved.For me I look at the S shaped leading edge of the Raven when I pull the tension in the wing - and that wing takes a good 40-50 kg pull back to latch in - it is not a skin I am tempted to accept any damage.

Kasper you have a lot of knowledge on fai.uk comps :) and aircraft,are you keen to get involved in setting up a recognised comp affiliated to a governing body..

Yep, Read CAP 482 and even JAR VLA and had to apply them to design briefs for aircraft in the UK. The issue with pylon racing is that people will not stay at nice simple 60deg 2-3G turns - competitive nature takes over and then if it goes pear shaped it happens very quickly at low level with wafer thin margin on time to react and recover.

 

And if you have any real appreciation of the operation of a flexwing the failure (and it was a definite failure not a weakness) was very fortunate in not having a very bad outcome - the tension in the trailing edge of a flexwing is critical and the failure as it happened altered the trailing edge while going very fast with a high load.

Ok u got me on the hook...i do understand basics of flexwing design (120hours flying them) and upgraded my Q wing to larger leading edge bolts.. Removed the skeleton for inspection ... Rebuilt a crashed tanarg and striped and re assembled the wing whikst employed by fly light airsports in the uk.. But i do not by any strech,know about the nitty gritty of any wing designs and the loads applied to them.but i do trust the standerds ultralight/microlights are designed too.. So like many would happily fly in comps... The jabiru landing gear test is an eye opning video ..

Yep, Read CAP 482 and even JAR VLA and had to apply them to design briefs for aircraft in the UK. The issue with pylon racing is that people will not stay at nice simple 60deg 2-3G turns - competitive nature takes over and then if it goes pear shaped it happens very quickly at low level with wafer thin margin on time to react and recover.

 

And if you have any real appreciation of the operation of a flexwing the failure (and it was a definite failure not a weakness) was very fortunate in not having a very bad outcome - the tension in the trailing edge of a flexwing is critical and the failure as it happened altered the trailing edge while going very fast with a high load.

Ok so we wont recomend pylon racing then (as peopple have no control under persived pressure loo) will read again as only skimed over and thought it was keel pocket:(

Read through and look at the service bulletin on pylon racing in a microlight and then say its only 2-3 G ... a bit of competition and low level gets to the blood - real live examplehttp://www.pmaviation.co.uk/admin/upload_pdf/SB128 QuikRKeelWebbing_QuikR.PDF

That is +2 to +3 lol

I was more thinking about flying skill comps.. Navigation,spot landings short take offs.. Yes they pilon race ultralights but sure the no where near g limits.. Prob only +2-3 no more than turbulant weather... Pls dont turn it into are the aircraft suitible but keep it as how can we get this to happen if we can??

I would happily have a go at arranging/assisting the wa one if we can get it agreed and supported by the raa..

Other tasks are spot landings,short field take off (really short) these can only be good skils to master..

Thats the spirit :) i done a couple of rounds in the uk, they do nave ex.. Soaring ex with fuel limits.. (And emegegency reserve but use more than allowed costs points... I was also lucky enough to train at flylight aurspirts in the uk who have multiple world and europeen champs.. Paul dewhurst..and done my gft with rob grimwood also multiple world champ... The social side is great the banter better and christ it sharpens your flying skills and i need that lol....

http://microlightcomps.org/index.php/events/categoryevents/3-european-microlight-championship

Is there any form of competition flying for ultralights in oz? Would be good to see and participate in.. I know there is the world airgames.. And uk and european comps. Could we have state comps then winner goes to nationals then a team is selected for worlds..

Thanks :)

Would the rotec liquid cooled style heads not solve a lot of problems? Rotax over cool there engines and they seem to be ok as is the jabiru with a bit of care and love...:)

G'day Ricky, a nice J120 you got yourself there, Matt asked me if I could take it over for you but I haven't got the time either!! Hope you find someone that looks after your new aircraft that can take it over for you.Regards,

 

Tom

very nice build, I built a 582 standard version 9 years ago in the uk G-CDDR, and loved every minute spent with The DR ...even the freezing cold nights in a single brick garage with just a small blow heater whilst building it... was also lucky enough to spend my last few months living in the uk working for flylight airsports the uk importer. enjoy :) they are great to fly and easy to maintain.

I am looking for someone willing to ferry a j120 from Brisbane or Adelaide to perth YPJT or other local field if you do not have rpl/ppl, (old owner can bring to Adelaide if needed) the aircraft is in good condition with recent engine rebuild at factory, willing to pay all cost of trip and small amount to compensate for your time. I would love to do the trip but can not take any time off work:(.

Thanks ricky