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Old Jul 03, 2008, 07:40 PM
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Sig LT25 (AP) Electric build thread

I am going to start a new build thread for the Sig LT25. It will be electric powered and for AP use as well as a general flyer.

Hopefully this will generate discussion and exchange of ideas along the way. I know there are several other LT25 owners out there who use theirs for AP work also.

My initial mods are:
  • Reduce dihedral by about half
  • Add wider aileron stock
  • Have inboard flaps
  • Bolt on wing
I have not really been a fan of side mounted camera's but I think I will give it a try with this one. Gordon Tarling made a very simple camera carrier which I liked the idea of and I thought it would be easy to mount it to either side of the plane and with just 2 bolts so swapping sides would be very easy.

I have a question for you UK chaps. Where can I find nylon bolts, nuts, wing nuts etc? Say 1/4" size. I know in Canada they were very easy to find at Canadian Tire, Home Depot etc but I have not found anything but strange looks when asking sales clerks at hardware stores.

BTW...Nice carbon Fiber gear Gordon....where did you obtain it?

CG
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Old Jul 04, 2008, 05:58 AM
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Woking, Surrey, UK
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Hi Mike,

For nylon bolts, nuts etc. I have used http://www.modelfixings.co.uk/ in the past. I have no association with them other than being a satisfied repeat customer.
Good luck with the build!

Andy

P.S. did you ever fit the new CNC'd EZ* motor mount?
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Old Jul 04, 2008, 10:12 AM
DWA
John 3:16
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That is a great looking and very simple mount Gordon.



Looking forward to the build Mike, maybe I will start my Kadet.



Dave
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Old Jul 04, 2008, 10:34 AM
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Dave, feel free to bring your Graupner Kadett over into this thread. The two planes are very similar and it will make a great comparison/companion....give me a head start though!

Here are some pictures of the Graupner Kadett and the Phoenix Rainbow which are the exact same plane....well one is the boys version and the other is the girls version

CG
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Old Jul 04, 2008, 10:44 AM
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Quote:
Originally Posted by 12OClockHigh
Hi Mike,

For nylon bolts, nuts etc. I have used http://www.modelfixings.co.uk/ in the past. I have no association with them other than being a satisfied repeat customer.
Good luck with the build!

Andy

P.S. did you ever fit the new CNC'd EZ* motor mount?
Hi Andy...sorry, missed your comment. Yes Propnut and I (well Terry did most of the work as I kept hitting my head on the roof of his shed!).
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Old Jul 04, 2008, 11:04 AM
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Mike - you hit the nail on the head with the camera mount - there are blind nuts either side of fuselage to take the mounting bolts, as well as a socket for the servo plug. It's a very simple job to make a new carrier should you ever change your camera.

The carbon fibre gear was bought by a friend at a show, I'm afraid I can't tell you any more than that!

Modelfixings is where I get a lot of my smaller hardware from, either that, or the local fastener specialist - they always seems happy to supply small quantities as a 'sample' and the cost is nearly always 1!
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Old Jul 04, 2008, 03:19 PM
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Session 1

Oh the smell of balsa when you open a fresh box.....it's a wonderful aroma.

Took all the balsa sheets out and gave them a quick shake and it's just like a windy fall day. Laser cut kits are so fun.

Time for "tea" (supper) so will take a break for this evening.

CG
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Old Jul 05, 2008, 11:54 AM
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Left wing panel just about done. Going with HS81 servo's for flaps and ailerons but think the metal gear (MG) version might be a good idea.

I am amazed at the strength of this wing and it can not be twisted at all.
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Old Jul 07, 2008, 03:19 PM
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Grrrrr stick of balsa missing from the kit....1 main spar. Oh well, I think there is a hobby shop in Oxford.
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Old Jul 08, 2008, 05:21 PM
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Wow Canada Goose, that wing construction looks so much neater than mine did! (I had a couple of mishaps making mine, and I was half debating to make seperate servo mounts for the ailerons).

I was going to build mine with half dihedral (3 degrees), bolt on wings and with seperate aileron servos but the skills were over my head at that time (I've only been building planes for a little while).

I can see that I, like you Canada Goose, will end up owning more than one Sig LT-25 I do want to add a camera to mine and I will be keen to follow your progress...

(Shame about the main spar - did you get another one?). I might have to check out that website for those fixings - I'm quite lucky that my (not so) local hobby shop stocks a lot of nylon bolts and accessories (Flying Models - Leeds ... aka modelshopleeds.co.uk)

- Looking forward to following this build log ... I was still finishing my LT-25 when I bought an SA RV-4 ... I started reading a build log by GWSRobster on it but it seems I'll finish my RV-4 before he will I might have an ad hoc build video from that little project.
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Old Jul 08, 2008, 05:29 PM
with some planes and a quad
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Oh one thing Canada Goose, I hope you're going to add wheel pants to your model ... I've seen some LT-25's with them and they look great!

I might try build some once I know mine flies!
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Old Jul 09, 2008, 03:47 AM
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Chipko,

Do you have some more pictures of your LT25 that you can post. I'd like to see the top and sides more...you are teasing us with that sample pic.

Can't pick up a spar till fri when the store is open late...no hobby shops in Maidenhead where I work.

CG
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Old Jul 09, 2008, 09:56 PM
with some planes and a quad
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I've got some pictures before it was completely finished - I'm waiting for some sunny weather to get it outside and take some brighter, better photos.

For now, these are what it looked like a little while ago...
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Old Jul 10, 2008, 10:17 AM
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Great job.....I love the contrasting red/white fuse...hmmmmm, you better put a patent on that colour scheme
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Old Jul 10, 2008, 11:33 AM
with some planes and a quad
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I was going to cover the whole fuselage in read, and the ailerons were going to be blue, the fins were going to be red .. but...

I ran out of red I had plenty of white left from my last covering job so I thought I'd try do the "splash" covering for the fuselage (since my spinner is white)

It turned out OK but there's some faults on it... you can see the line where the red finishes if you look closely but I feel it's turned out quite well really.

On the rear stab, you can see I also ran out of red covering... So I tried to make it a little bit interesting - half-tone rear stab.

The LT-25 allows you to be quite creatie with the covering since there's plenty of areas to join colours together.

The yellow and blue transparent film works OK but I'm not sure i'll be able to see the yellow bits or the blue bits when it's in the sky looking green :P

This coming Monday I'm hoping to fly it for the very first time!

PS: I wish I had a LHS that had a late opening night! The best one is only open Mon-Sat 9-5 and closed Wed. Hope you get your spar OK
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