Jabiru J400 Builder Log

Jabiru aircraft builder - building a J400
Jabiru aircraft builder - building a J400

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Jabiru J400 Builder Log - February 2006

       

2/28/2006 3:50pm-10:19pm
1) removed everything from the wings so that i can hang them on the fuselage
2) drilled and fitted the pitot tube to the right strut as instructed
3) on moving the wings i decided to check the aileron movement ... i took a picture of the factory marking for the aileron cable vs the real position... good thing i didn't just start cutting
4) since i couldn't get a hold of anyone to help me with hanging the wings i fixed the threading on the rear door handle machine screws... seems good as new...
5) was going to do the door latches but seems that i need to install the jams which i don't have a heat gun that is needed...nothing is working out today... ok

       

2/26/2006 4:40pm-10:20pm
1) thought about the nose gear spat overnight... moving the axle hole back shouldn't cause any problems in operation... so i've fitted and drilled all holes for spat... looks good..the 2nd point was done with a backwards retaining nut on the outside of the yoke riveted with countersunk 3-3 rivets...looks good and holds real well
2) bolted the flange extension for the prop onto the engine ...used loctite 262 on the threads...torqued to 30 ft-lbs
3) cleaned up the tent floor and pulled the fuselage out to attach wings...wipee!

       

2/25/2006 2:50-10:51pm
1) trimmed the edges off of the spats... fit the left and right spats on the main gear using retained nuts... drilled the hole for the tire inflation grommet but then found out that it's really a 1 inch hole saw and so i need to go and get the 1 1/8"
2) got the 1 1/8" hole saw and resized the holes... both main wheel spats were installed successfully
3) the nose wheel seems to be giving me trouble... the wheel is up in the air and it does not see that the spat fits this way...which is a concern because this wheel does come up off the ground in flight of course... so why is this the case? it seems the spat isn't long enough? it could be that the premarked axles holes are not in the correct place? it seems to be 2 inches short? i guess i could move it 2 inches back... but i'd have to retreat the bottom rear edge of the spat and lift it at the same time on the mount...not sure if this is right...it's late anyway so i'll call it a day and do some research

       

2/24/2006 5:05pm-10:29pm
1) since i noticed the other day that brakes on the backside of the landing gear would mean that the brake line would either have to be crossed or in an inconvenient place in the backseat foot area, i removed the wheels and switch left to right and vice versa
2) installed the brake lines to the master cylinder, filled with dot 4 fluid and then bled the brakes

       

2/23/2006 4:45pm-6:04pm
1) took the 2 front wheel spat halves apart and removed the leftover masking tape from a previous flocked join...sanded the edges a bit for a smoother even finish
2) feeling lazy..going home :)

       

2/22/2006 4:09pm-9:44pm
1) checked the work from last time... all things look good
2) cut the naca scoop pattern out of the cowl that will serve as the cabin heat intake
3) put the stall warning funnel for the left wing together...used 5 minute epoxy... then i cut the wing and threaded the clear tube through to the wing root...once everything prefit ok, i 5 minute epoxied the stall warning to the wing...a bit tricky and messy to align properly...i think the tube had some torsion on it that i couldn't get rid of and so it made it hard to align properly while it dried... but i think i got it ok in the end...

       

2/20/2006 3:43pm-6:45pm
1) been working at home on the instrument panel however it's not too far along...sourcing the instruments and especially the lcd has been challenging....actually...the lcd is the challenging one
2) i'm pretty sure the dealer initially said that the eyeball air vents were included over the phone... anyway... recently called and they said no.. but they sent me 3 naca ducts...1 for the cabin heater which was missing in the cabin heat kit and 2 for the air vents... not sure why they included the naca ducts and not the eyeballs if none were included...but whatever it's not a big deal as i can get them myself and they're small items... anyway... i still used the mouse ears looking scoop on the outside as i didnt want to cut such a large naca hole next to the door....
3) cut the 1 3/4 holes for the air scoops and flocked the outside scoops and naca scoops (inside) on both sides...used aeropoxy...
4) another problem is that they sent me all 2inch naca scoops... when the heat muff they originally sent was for a zenith which apparently has it's own scoop at 2.25"... anyways... i flocked the 2 inch scoop to the cowl and will deal with it later... probably will have to either build it up to 2.25 or just remove the steel wire from the 2.25" duct to clamp it down to 2" naca scoop...aeropoxy also used here... or maybe i can find a fitting from 2 to 2.25"

2/8/2006 5:40pm-6pm
1) removed the extra tape off of the nav lights and checked ...looks sturdy...one thing i noticed is that the angle is a bit hard to determin..and of course i should have put this thought in at the beginning... do you level the nav light with the bottom of the wing? probably not...should probably be aligned with the chord? anyways..too late cause it's already there but it does look inline quite well with the chord instead of flat bottom of the wing and i presume this is good enough and probably the way to go...it makes it trickier because this has a bit of a downward winglet (is this what it's called?) kind of like a cessna 172

2/6/2006 6:50pm-9:55pm
1) removed the tape and wood template from the nav lights base...took some scraping to get all the tape off
2) cut the holes for the nuts and the electric cable
3) flocked and siliconed the nav light housing to the wing...used aeropoxy

2/3/2006 4:18pm-11:09pm
1) so...the project for today was to get the nav/strobes on the wings... i guess this is a creative type of project.. so i've made a template of the base of the nav lights out of wood to serve as a base against the wing that i can use to flock in between to form a solid support roughly shaped like the nav light
2) the wood nav light templates were cut
3) the wing was sanded to remove the gel coat
4) to put the templates into the correct alignment tape didn't work...so i had to use 5 minute which worked well
5) taped around the template and filled with aeropoxy...used 1.5oz of epoxy...

 


Questions or comments? Contact me at roger@jabiru-aircraft.com

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