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Highside Glider

Design by Lindsay Todd

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Lindsay Todd19/12/2015 17:15:23
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1774 forum posts
1833 photos

Well I mentioned in my Owlet blog that a new design was on the go and was something a little different for me. Well I guess it is time to go public and gauge a reaction. I have not built or designed a glider since I was about 12 years old so I guess it was a bit overdue and with a Brother In Law who is an rc glider enthusiast then I was getting a little flack to do something.

My aim was to come up with a straight forward design to build that had a believable look about it and could be used primarily for slope soaring and potential to add a power set up later if I felt the urge. It should be compact and capable of some aerobatics and operate in general flying conditions if there is such a thing and of course that will only been born out once I get round to the flying bit.

I have used my own compromise wing section that hopefully gives appropriate performance for general flying.

Enough waffle so here it is, at least the basic design

highside.jpg

The model is all basic balsa construction, the fuz a box with sheet nose and lattice frame rear, broad wing, mid wing layout at 56inch span so reasonably compact.

Work has been on going so this will be a retrospective blog as she is now largely constructed and looks like this

s3010018.jpgs3010021.jpgThe fuselage carries two standard size servos with plenty of space for RX and flight pack, strip ailerons 38mm wide so should be capable of crisp response. Hoping to get this finished and airborne asap. Thoughts and comment please as usual. Linds

ken anderson.19/12/2015 17:35:04
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8859 forum posts
820 photos

hello lindsay...very nice -it looks like a one i'm flying from LE gliders..... the guppy.....quick get a plan in the mag for it-for the problem with obtaining the guppy is it has to come all the way from kansas/USA.here's the photo from my album...

 

 

ken anderson...ne...1 guppy fan club dept.

Edited By ken anderson. on 19/12/2015 17:38:02

Lindsay Todd20/12/2015 18:39:06
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1774 forum posts
1833 photos

There is no denying I pulled some inspiration from a few designs I have seen over the years and brought them together in my own. Definite similarities with the guppy but enough variation to make them individual in there own right as well - interesting as I was not aware of the Guppy,

john stones 1 Moderator20/12/2015 18:42:24
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Moderator
11925 forum posts
1531 photos

There's something fishy about this thread teeth 2

Wiltshire Flyer20/12/2015 19:05:49
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1565 forum posts
477 photos

Wow they are very similar!

Frank Skilbeck20/12/2015 19:33:32
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4933 forum posts
114 photos

Here's my Le Fish

But Lindsay, nice model, but for a glider I don't think I would have finished the tips like that. Maybe the Mk 2 could have a slightly taper wing and different tips. Have you made any provision to add some ballast, my Le Fish is a bit too light for normal UK sloping.

Lindsay Todd20/12/2015 19:43:56
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1774 forum posts
1833 photos

Hi Guys, it was a conscious decision to avoid a taper just to keep the build very simple if we get as far as a published design but duly noted for the tips which were largely driven by aesthetics over maximum efficiency. The fuz is deep enough to carry additional ballast and that was indeed a design consideration. The Le Fish was certainly one of those models that I like the shape of and was certainly in the mixing pot but not intended to be such an extreme aerobatic design. I guess this is aimed at the transition from novice arena but I need to see how she performs probably in the hands of a few slope guys as well as my own experience is limited so a trip to the Orme will be schedule once she's ready and a few bodies are around and we'll have a 'pass the tranny session' and see what everyone thinks. Linds

Lindsay Todd20/12/2015 20:00:14
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1774 forum posts
1833 photos

Mostly been covering the wing today in a subtle shade of day glow orange and applying my graphic but it also shows up well how the one piece wing locates onto the fuselage giving great access to the space within the fuselage.

s3020001.jpg

s3020002.jpg

s3020003.jpg

Will start from the beginning of the build soon when time allows. Linds

Matt Jones20/12/2015 20:31:30
1186 forum posts
1 photos

I like that Lindsay, what section did you use?

Lindsay Todd20/12/2015 20:46:05
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1774 forum posts
1833 photos

Hi Matt, I new somebody would ask me that and in absolute truth it is completely of my own making. It is actually my Zulu E design section that has been thinned and stretch with just the slightest hint of reflex. Given this I totally accept that I could have gone with an established section and that would have been the safer option but me being me I like to do things my way so if it turns out to be rubbish then I can only blame myself but I am reasonably satisfied that the logic re performance expectation is sound enough so as with all designs the truth will bear out in the end.

Andy G.21/12/2015 08:24:10
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413 forum posts
215 photos

Keeping an eye on this one! That looks very neat! Hopefully a free plan soon.

Steve Houghton 121/12/2015 09:37:44
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1943 forum posts
129 photos

I'm following this thread too thumbs up. As mentioned before, this is very similar looking to the Le Fish, Guppy, Traceur and many of the Swiss Fish type VTPR designs. In the new year I fancy buying one of these, which is made from depron with a 120mm span, I think.

astix.jpg

Steve

A470soaring

PatMc21/12/2015 17:25:57
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4523 forum posts
550 photos

Looks a bit like a stubby mini-Voltij

voltij _2.jpg

But then again design shapes do tend to come round again -

petrel_1.jpg

A design of mine circa 1980-84

petrel_2.jpg

About 76" span but designed to pack away for holidays. Flaperons via 1 fixed & 1 sliding servo in the fuselage - no mini servos or programmable Tx's back then.

Lindsay Todd21/12/2015 23:46:05
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1774 forum posts
1833 photos

Seems at least people like the shape so that's a positive start, bit more covering done this evening, will get stuck into the retrospective build blog later in the week once work is out the way. Linds

Frank Skilbeck22/12/2015 08:41:14
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4933 forum posts
114 photos
Posted by Steve Houghton 1 on 21/12/2015 09:37:44:

I'm following this thread too thumbs up. As mentioned before, this is very similar looking to the Le Fish, Guppy, Traceur and many of the Swiss Fish type VTPR designs. In the new year I fancy buying one of these, which is made from depron with a 120mm span, I think.

astix.jpg

Steve

A470soaring

120mm span, you'll have to keep that close in wink

Lindsay Todd27/12/2015 17:24:12
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1774 forum posts
1833 photos

An afternoon of covering and she now looks like this

s3050002.jpg

s3050001.jpg

I think another couple of hours to fit control horns and connect up linkages and she will be ready to hit the slopes, not literally I hope. The site closest to me is probably Great Orme so hopefully later this week I might get wind under her wings. Linds

john stones 1 Moderator27/12/2015 17:34:16
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11925 forum posts
1531 photos

Like the colour Linds looks a good un yes

John

Lindsay Todd27/12/2015 17:58:49
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1774 forum posts
1833 photos

Day glow orange, will need the sunglasses on the greyest of days

Chris Barlow27/12/2015 18:11:36
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1904 forum posts
1308 photos
Posted by Lindsay Todd on 27/12/2015 17:24:12:

I think another couple of hours to fit control horns and connect up linkages and she will be ready to hit the slopes, not literally I hope. The site closest to me is probably Great Orme so hopefully later this week I might get wind under her wings. Linds

Not with SE winds! Pop over to Cheshire/Derbyshire (LMMGA) for a test fly?

Lindsay Todd27/12/2015 21:47:36
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1774 forum posts
1833 photos

thanks for that Chris, I'll see how my week and weather goes and might take up the offer. I have ended up in the strange situation with three models to test fly at the moment each needing slightly different conditions and venues. Linds

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