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Post by dennisp on Oct 23, 2008 13:55:10 GMT 8
haha.. as seen how graceful are the turns on DT's Sabre, maybe that 1-inch throw is good. Can't wait to see your Canadair F.4 assembled as a whole cos the colour you choose is really cool!  Coming very soon Capt. I shall expose the naked bird to all ....  |
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Post by dennisp on Oct 23, 2008 18:53:30 GMT 8
The Naked LadyI suspect those who have been following this build saga just want to see what the model is going to look like, well all is revealed in the next picture, rudder and push rod fitted and the elevator push rods are now in place. So now where do all these pipes and wires go……??  I plan to install the fan and motor next, and for those who are interested I shall be using a WeMo Midi Pro with a Kontronik’s FUN 600-17, according to the data from Kontronik’s this should give 1.92Kg of thrust at 31,798 rpm, with a efflux speed of 53.5 m/sec. and a power input of 1,212 Watts with a suck of 55.10 Amps on a 6S pack. We shall have to wait and see if this is the case umm, but knowing the Germans I suspect the numbers will be very close.
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Post by dennisp on Oct 27, 2008 18:51:20 GMT 8
ESC and FanAfter clearing some work / work I finally had some time to work on the model, the fan and ESC are now installed and quick check was made to see that all was well. I like to run the fan up on a low cell count first and just let it idle for a while and then gradually increase the power. After about 10 minutes just idling away time to see if the figures match the German specified values, on 4S at 100% I was only getting 228 Watts compared to the published 338 Watts… umm not a good start. Up the cell count to 5S and YOIKS a major jump now 749 Watts which is greater than the 684 Watts published good news to say the least, as my 3S packs (2 in series) were not charged it was time to stop playing and move along.  Services panelI knew from the very start of this build the space under the cockpit was small hence using the wing drop tanks for the air tanks, so that nice big space at the back of the cockpit could be used to hide the excess wires and also for a services panel to hold the vital air items, air connector, pressure gauge (essential with air up / down gear) and the two way control valve and servo. I actually made the plate right at the beginning of the build when the fuselage was still un-assembled so as to get the right shape, the usual dennisp “D” box to hold the servo and we have a services panel.  The next picture shows the assembled services panel, in case you are wondering why the valve sticks out in the cockpit area this is so that the up / down speeds can be adjusted on the valve.  So for the big moment does all this preparation work really work so it is time for the trial fit, yep my luck is in it all seems to have worked as per the plan, servo leads left side with gear air pipes, power leads to ESC on the right side. The up /down air pipes will all join using “T”’s once I have finalised the BEC and associated separate battery. I can adjust the receiver servo lead lengths just by moving the cable harness in and out of the rear of the fuselage keeping the unnecessary excess lead out of the way.  I will continue this week to work on the avionics area, position the packs, BEC and then it is tidy everything up, and with luck the decals may arrive at the end of this week. Work can then begin on the office area and the man who is going to ride in this beast needs to firmly strapped in.. Then comes the longest job and that is the setting up and associated adjustments and some minor finishing items..
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Post by dennisp on Nov 1, 2008 17:04:20 GMT 8
Avionics bay tidy upSince I shall be using 2 x 3S x 5,000mA Zippy packs in series there is a need to ensure that these packs stay put for the flight envelope as any movement would be a giant Cg change. I needed to check how much space was actually available from the top of the packs to the bottom inside of the cockpit canopy base, to my surprise I found that there was just over ½” so that at least gives some clearance for the wires and connectors. The original ply plate that was supplied was sort of put in the wood odds and sods box but before doing so a check was made on thickness which is just over 3mm. So for the new pack tray I would need to be as close as possible to this, my tray is made of two pieces of Lite ply one (the base) is 1.5mm thick and the top 1.0mm thick. The thicker 1.5mm tray is glued to the foam but is actually cut into three strips to allow the Velcro straps be glued in-between and to the foam, the 1mm plate is then glued on top of the 1.5mm plate so the straps are no longer pulling on the foam but on the entire tray. A piece of anti slip mat for the car is then used as the surface for the packs to rest on. Front view The nose part of the foam ramps up so this was used to advantage to make slots for the 8 channel FASST receiver, the CC 10A BEC and the 2S / 2P 3,400mA receiver pack, yes that is an overkill but was all that was available from the SSW stores.!! The receiver pack is a tight fit in the nose and uses a Velcro strip on the underside to stop this pack from moving about. For clarity it may not be able to be seen in the picture but the BEC has plus and socket leads to the RX pack and also to the jumper lead to the receiver, it is just a funny from me as I like to do my set ups using a big external Ni-Cad pack and then finally test once everything is set up using the BEC and receiver pack . Rear view This shows the service plate...... Packs in placeNow it can be seen just how tight everything is, the packs are in the forward Cg position and can be moved back ½”, this is a limitation of the left side pack as otherwise it would interfere with the gear valve the right hand pack can go back at least another ¼”. The power wiring may seem a little odd, however for the moment I am using a Deans connector series pack “Y” lead, the motor power cables are terminated with 6mm gold connectors so there is a converter from 6mm to Deans. This serves as an additional function in that it has the anti-spark by-pass lead (I still have to get the vital resistor from Sim Lim), but I probably will make a 6mm to Deans “Y” lead with the anti-spark by-pass lead before the model becomes operational. First Power upThe moment came to provide Volts to the receiver and see if everything worked as should be, fortunately having using a servo tester for centring and checking during assembly everything was as it should be centred hands off the sticks and moving as should be with the sticks. I must say that the Futaba FASST system does some very strange channel assignments the days of ch.1 for ailerons has well gone even the throttle channel moves depending upon the selected wing and tail configuration. I did check this before I plugged the servo wires in fortunately...!!  The decals have not arrived from the USA yet so it is time to do some BCL items (Build Correction List), which should keep me busy for the next few evenings at least.
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Post by dt8666 on Nov 1, 2008 21:09:16 GMT 8
;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D my bird looks like a toy after seeing yours.. Will be nice after the cover up! lol |
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Post by dennisp on Nov 1, 2008 21:14:46 GMT 8
Thanks DT yours is fine, at least it flies  mine still on the bench.  Already into MRO as the servo for the retract air-valve has failed...  |
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Post by dennisp on Nov 19, 2008 21:27:34 GMT 8
Progress is made but slowlyRetract valve replaced and the associated operating servo, so the gear is now working correctly so the current MRO is completed. The decals finally arrived and the weekend was assigned for the fitting of same, sadly one sheet of decals was not in the package so the brakes went on again until the missing sheet arrives, so the model is back on the WIP shelf once again.  The pilotSo with time on my hands yet again, it was time to get the pilot into the office, first I made a new binnacle for the instruments and selected the pilot from the stores, after fitting the pilot into the cockpit pan I realised I had made a big boo boo, he was the wrong scale AIYO...! Searched around for another and finally found a RAF pilot who was that little bit bigger, so chopped the floor out of the cockpit pan added some 0.5mm Lite Ply with the objective of getting as much space in the cockpit for the bigger pilot who now looks more like the part. The difference in size of the two pilots can be seen in the pictures below.   So with luck the missing decals will arrive from the USA at the later part of next week and I can get down to the final finishing of the model.  I must blow all the dust off before gluing the canopy on..!!
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Post by dennisp on Dec 26, 2008 12:15:26 GMT 8
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Post by SKYHOBBIES on Dec 26, 2008 22:34:31 GMT 8
it doesn't look anything like a flyfly end product no more! Congrats to your build log earning over a thousand views! keep it up!!! |
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Post by dennisp on Dec 26, 2008 22:43:24 GMT 8
Thanks Capt.however it somehow managed to take far too LONG.....!, but if the build thread has been of help to other builders then I am pleased that some of my old fashioned knowledge has been of use to them..
Beneath all that glass skin and paint it is still a Fly Fly F-86, so it may inspire more Singapore modelers to try to be different with their ARTF's no need to go mad (like me) but straight forward items like the decals on your F-16, still a SAPAC model but 100% improvement with just those few decals... well done sir.
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