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Member postings for Tim C

Here is a list of all the postings Tim C has made in our forums. Click on a thread name to jump to the thread.

Thread: RansS-9 Chaos.Peter Miller's new design blog
01/07/2020 16:45:58

Peter,

have you kept to scale width of the fuse? Or shrunk the width slightly, it very wide on the 3 view

Thread: How Windy is Too Windy
26/06/2020 14:20:02

when this happens taxing out to the strip


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Thread: Valdez Stol Record breaker build blog
26/06/2020 11:23:34

Ground handling was generally good, particularly as there is a steerable tail wheel. Flaps or not, turning in the wind in either directions it just flipped over, it was gusting 18+mph.

26/06/2020 08:50:05

Maiden abandoned for today, gusty wind too much, resulting in flipping over while taxing4e610b07-6036-4873-a41b-740daef292b6.jpeg

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25/06/2020 16:20:20


Ready for maiden

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Thread: Forum members' new models: Let's see them.
25/06/2020 16:14:07

 

 

 

 

Edited By Tim C on 25/06/2020 16:14:53

25/06/2020 16:14:01

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Finally finished, yet to fly. Final AUW 50oz with 2200 Lipo.

Some 60 individual 3d printed parts, 33 to make the dummy motor. Covering is Polyspan tissue, floor varnish and dulux Cub yellow. Pilot figure is modded 3/4 glider pilot from thingiverse with blue foam to pad him out, only 20gm painted. Wheels from a fun Cub.

Thread: Graupner Vector Board. Best adhesive?
02/05/2020 09:31:03

Have you tried cyano, I used a std type successfully, not foam type, appears cyano proof foam, but may need further testing to validate with other products than the one I used

Thread: Pink and Purple Super Sixty
07/04/2020 18:24:04

David,

this is what you need https://youtu.be/oS758KRCXII

this was covered in Habtoi silk pre coloured in shocking pink and water based varnish from memory

Thread: Cheap Chinese Laser Cutter
06/04/2020 21:58:43

Martin,

is your PSU supplying enough current.? I had a similar problem when I ramped up the power setting to 100%, I solved mine by junking the supplied psu and connecting it up to my bench supply, a converted ATX psu from a computer

Thread: Forum members' new models: Let's see them.
04/04/2020 17:58:13

Duplicate edited out

Edited By Tim C on 04/04/2020 18:01:02

04/04/2020 17:58:06

Pushy Cat v3 , 2nd rebuild of the 2005 original, failed launch in Zero wind resulted in lawn dart, damage limited to broken wing mounts, recovered fuselage in Orange in bid to aid viability, the Matt black was stealth invisible.

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Thread: Valdez Stol Record breaker build blog
05/03/2020 21:14:12

Basis feel free to pm me with any questions, there are some excellent threads on the forum on both 3d printing and laser/cnc cutters.

my build is totally hand cut, I have deviated in a number of areas from Peters plan. 3d printing was a way of adding details for a more scale experience and custom building fittings such as flap hinges and snake supports. I have a ANET A8 3d printer, it’s a low cost entry level machine with no mods, more than adequate for anything I have produced so far

05/03/2020 21:08:27

Hi Steven,

I was not sure where my cg would end up, but with a 2200 Lipo is just a few mm in front of the plan location, which is good news, I am using ultralight fun Cub wheels and the motor only 70gm, so I am guessing your going to be pretty near with your setup. There still a few bits and bobs to go but most of it is on or in front of the cg line so should not cause an issue. I have a hatch in the underside and the battery locates easily in the hole and through the former.

i will post up the rest of the styles next week, I am away till then, you could print the motor parts at 110% which would give you 44mm dia internally and not look out of place, I think mine in retrospect was a tad small in any event, but fitted my motor dimensions.

04/03/2020 14:47:13

Steven, I will post up the files for the dummy motor, there are 33 separate parts, the exhausts use a hack technique where they are bent using hot water , PLA becomes malleable aft low temps so can effectively be moulded, I had to make up a jig to hold the 4 into 1 , while I glued it. Note that it is for a 28mm dia motor and X mount 40mm dia from recollection, a 35mm motor will fit in the crankcase, but you would need to be inventive with the motor mounting to get it to fit.

The pilot is a rehash of this https://www.thingiverse.com/thing:3648714 on thingiverse, chopped it around a reangled to fit the cub, and used a lump of blue foam as the rear body half, used thin wall on print settings and minimal fill, resulted in 20gm weight, not bad for quite a large figure, the sunglasses were laser cut from a piece of shampoo bottle

03/03/2020 15:25:27


Nearly done, final tweets, struts, UC and glazing to finish. AUW 44oz with 2200 Lipo, power 290 - 300 watts on 11x 6.

pilot 20gms, mix of 3 d print and blue foam.

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Thread: Removing anodizing
26/01/2020 19:41:50

Caustic soda, widely available in good hardware shops and the likes of b and q, likely not in your local supermarket. Do follow the instructions when dissolving the crystals it gives of a lot of heat when mixed with water

26/01/2020 15:11:28

Dip the parts in Caustic Soda, Rubber Gloves and goggles are essential, don't leave too long in the solution as it will eat the aluminium. It will leave the surface clean and smooth for polishing, clear coat will help keep oxidizing at bay but is not essential, I have renovated old anodised cycle parts into shiny new parts, not bothered clear coating, a quick polish every now and then keeps them looking good despite the exposure to the elements.

Thread: BMFA numbers. Is this true, or a gross exaggeration?
13/11/2019 15:06:53

If the demographic stats are to be believed, the number of 60 to 74 year olds will increase by 1.35m in the next decade, this should be a target market for growth. It’s up to clubs to attract new entrants, I reckon half our club never fly, but regular monthly meetings talks and events keep people interested

Thread: Valdez Stol Record breaker build blog
13/11/2019 11:03:47

The HK system works well enough on light weight electrics, Its only about 3gm total AUW. I have used it on several of my models. The main body of stress is taken up by the bracket attached to the fuse, the rudder merely provides the turning action, a pull pull system provides a degree of stretch negating the need for separate linkages, the 3d printed arm has a degree of flex as well. I always use MG servos on the rudder as well.

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