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Everything posted by Martian
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Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
Well 1 nacelle is sort of done its been a real pain to get the main retract to sit right then carefully measured for gear doors it took numerous times to get them to sit right and hinge open so fitted gear back in only to find the the door over the wheel would not close so take doors off cut away part of the nacelle sides trim and refit doors its now as near as its going to get. No wonder there are so few builds for the cat having checked the only build log surviving on RCSB by Wingspar and reading the comments without exception they all have same problem. Lets hope nacelle 2 goes better . I've been struggling with this one for over a month obviously not non stop . Still plenty to do .I WILL NOT GIVE UP ! -
Some info re pla glue I have used PVC pipe weld to good effect although not tried on wing panels yet , it successfully dissolves a pla layer and gets stronger as it cures . Ok if you suffer from CA fumes and skin reactions.
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Great for grandchildren projects to
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Thanks Ron it is PLA
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Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
well after what seems forever I have printed and built the Humvee so no more procrastination its back to the Cat this weekend. Pic of Humvee in 3d print forum -
got a bit stuck on my Tigercat so decided to printed and build a Humvee using stl files from 3dlab I didn't notice how big it was going to be anyway after about 300hrs printing buying additional parts like tyres, dogbones ,ali bar, servo ,suspension units and goodness how many nuts and bolts also waterproof ESC and 540 motor I used 3kg of filament and have no real idea of the completed cost. it is over 630mm long with led headlights. At least I learnt about shear strength of different filaments for example silk finish filament looks very nice but the torque on the drive units just snap then so easily. I found matt filament an improvement but the best for shear strength is standard filament from Sunlu it has properties not unlike Nylon. all drive parts have been reprinted with Sunlu . pics
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Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
must confess I have been sulking ,after lots of measurement and placing lipo on the plan it dawned on me after building the cowl there is no way I can put a lipo in the nacelle so I will revisit the fuselage for a way of fitting lipo in there I,m pretty sure it will be ok ah well at least the main retracts fit ok just the nose gear and lipo to sort out trouble is I was feeling somewhat dejected so embarked on a service of my 3d printer then decided to undertake a mammoth print and build (some parts at 20hrs plus) of a Humvee 600mm long I estimate around 300 hours of printing and now my workshop and bench is covered in parts looking like a destroyed Russian military vehicle ? as soon as I can get reorganised I will crack on with the cat -
Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
I am making progress albeit slow . The main retract leg goes up and down with good clearance and ample oleo height for prop clearance from ground. I have also used blue foam for the rear of nacelle all sanded and blended to balsa more fine work will be needed. Gear door aperture is about done just need to fit doors. I have started one cowl the method I am using is first find a suitable jar then laser cut round formers to slip over jar separated by notched balsa spacers first ring is held in place on the lid with blue tack then the other 3 rings slipped into the notches and glued using aliphatic then 4 lengths of balsa and when dry I removed from jar. I inset another ring into the flightline cowl front then this will be glued onto the other section (I think ) -
John you have right to have a PSA test just remember symptoms are rare until prostate cancer is advanced almost certainly you will have an enlarged prostate it goes with the territory for aging men, many men die from other conditions and may have prostate cancer that never causes a problem. My father had prostate cancer without knowing and for him it was to late so in my opinion get checked in all likelihood you may have no problem as they say it's better to know your enemy.
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Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
Hi Chris thanks for warning I will load test them however these units are all metal heavy duty (heavy being apt) I think rated for 10kg -
Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
Hello. I only have a mini lathe and its slow progress but I have turned down the parts for the oleo extension for a tight fit and bonded with high viscosity super glue I now have good clearance when retract is extended and good prop clearance. I will have to build up the lower rear of the nacelle to accommodate main wheel I will use blue foam after cutting away the balsa skin. -
I take tamsulosin every morning I honestly don't know if makes a difference I still get up for a pee 3 to 5 times a night .
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Grumman F8F-2 Bearcat 36" 4ch
Martian replied to Martyn's topic in Building from Traditional Kits and Plans
Hi Martyn you are making a cracking job of this plane -
Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
Hello again ,well after much pondering I think I have a solution to the retract problem. I have cut out more of the internal bits in the nacelle to give me 30mm for strut length the retract mounting will remain the same using the original oleo which I turned down to fit in the retract unit which has a 10mm pin mount I have ordered a small amount of quality ali rod and tube to extend cutting a section of rod to 45mm and a section of tube to 50mm I can sleeve and bond the join. sorry 1 pic out of focus. -
thanks guys I only found out this pm I will be OK after a scotch and sleep.
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Dom Smith F7F-3 Tigercat
Martian replied to Martian's topic in Building from Traditional Kits and Plans
Some progress on one nacelle all planked with retract in place it is sitting nicely in place exposed after carefully cutting access for retract doors all seemed good UNTIL!!!!! I extended the retract and realised the main wheel is about 40mm short so therefore is to close to nacelle ? , this is by no means my neatest or an easy build . So now I have to do a combination of 2 things first raise retract unit as much as possible which won't be much or just try a longer oleo , just looked again I placed the retract as far forward as possible to get depth and clearance in nacelle profile a longer oleo means main wheel will be further towards rear of nacelle . What a real pain I have a warbird Mustang kit to build sometime which I may sell on also I have an ambition to build a Burnelli CBY-3 but not until this cat is built. -
April 2019 is so long ago when I was first diagnosed and have been monitored since then all has been OK until now last three PSA results show a rise and this last one a jump to 7.3 that's a 1.2 jump bit of a shock to say the least got to have another blood test end of March and if still raised or rising have a discussion on next steps maybe another biopsy or MRI or possible treatment anxious to say the least but at least monitoring works.