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Crane Fly Trainer Autogyro


Tom Wright  2
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Crane Fly Autogyro
 
Doubling up the fire wall and notching front edge of floor.
 
At this stage one of the formers can be used to double up the rear of the fire wall best done with cyno as this hardens stressed parts.
 
Two notches are now put in the floor front edge to allow clearance for the undercarriage wire.
 

Sorry blurred need more tea !

Edited By Tom Wright 2 on 04/01/2012 08:24:14

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Crane Fly Autogyro
 
Fire wall fillets
 
Scrap 1.5 mm lite ply is use to fillet both sides at the rear of the firewall.
 
Dimensions not critical mine are 2 1/2" x 1 1/2"
 

Need  to set some lighting set up these flash photos are no good ,hope you can see enough to get on.
 

Edited By Tom Wright 2 on 04/01/2012 08:40:13

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Crane Fly Autogyro
 
Tailplane and Fin.
 
Material 1/8" med balsa sheet.
 
Center section 12" x 4 1/4"
 
Tips from 5" x 4 1/4" taper 1" in from tip l/e
 
Dihedral 4 3/4" under each tip.
 
Glue Cyno.
 
Fin.
 
From 5 1/4" x 4 1/4" taper 1" from top l/e.
 
All glue joints with cyno no other reinforcements recommended.
 
Its absolutly essential that the fin and tailplane tips are set square .
 

Edited By Tom Wright 2 on 04/01/2012 11:56:06

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You may well ask why I skipped on to the tail before finishing the fus mid section .
This is due to changes from my original prototype design and in an effort to beef up and simplify this build......err and cos the tail is easy in fact its all easy until we get to bits that control the things that whirl round lol.
Now the mean c/g point has been established we can get back to the fus ,hoist the mast then tackle the control mech / tri flapper plate .Rotors will be last but they are very straightforward.

Edited By Tom Wright 2 on 04/01/2012 12:02:39

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Crane Fly Autogyro.
 
Mast anchor / pivot plates material 1/8" ply.
 
Dimensions 2" x 1 1/2".
 
4mm hole location 1" in from vertical edge 1/2" down from top edge.
 
Double check the hole axis is true in both planes.
 
 

 
 
 

 
Glue into place and use a 4mm rod or drill to check correct alignment.
 
 


Edited By Tom Wright 2 on 04/01/2012 14:29:36

Edited By Tom Wright 2 on 04/01/2012 14:33:27

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Crane Fly Autogyro.
 
Servo mounting blocks.
 
Material 1/2" x 1/4" spruce (make from boom off cut)
 
Space to suit servos 9 gram size with metal gears are recommended G C have a good selection but some are to deep ( the ones like mg90 have a bottom bearing that extends the case size).
I have the Corona DS-939 MG to hand ,just right for this model.
 

Just in case you hadn't noticed the first servo blocks are mounted directly behind the rear of the mast plates. .
 
 

Edited By Tom Wright 2 on 04/01/2012 15:17:21

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HI Simon
The balsa cabin is a a good place to buy from and compare prices a sheet of 2mm x 12" x 24" sheet of lite ply is currently quoted at £2 49.
2mm is the thickness I have used were lite ply is specified.
Thanks for the question its brought to light an omission in that the lite ply thickness is not mentioned in previous pages.
Tom.
 

Edited By Tom Wright 2 on 04/01/2012 23:49:16

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Posted by Tom Wright 2 on 03/01/2012 23:48:37:
Crane Fly Autogyro
 
Basic fuselage material amended list Note al lite ply is 2mm thickness..
 
Qty one...1/2" x 1/4" x 30" spruce (fus boom)
 
Qty one...1/4" x 1/4" x 10" spruce (mast) subject to change
 
Qty one...1/4" x 1/4" x 14" spruce (mast back stay)
 
Qty one...16" x 2 1/4" lite ply (floor)
 
Qty six...2 1/4" x 2 1/2" lite ply (formers)
 
Qty two...2 1/2" x 9" light ply (sides)
 
Qty one...standard length 3mm piano wire (undercarriage)
 
Qty two...sponge wheels 70mm or nearest diameter.
 
Med cyno...The GC stuff works well and is good value.Can use PVA instead but if your ok with cyno it makes the build much quicker .
 
Various scraps of balsa from your bits box.
 

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hi Tom great build really enjoying it, but please go to sleep at some point, I reckon you started this build at around 2am today and you are still at it! Such enthusiasm!
Cheers
Danny
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HI Danny.
I don't often suffer insomnia ,but do tend to be a night bird ,peace and quiet is the key.
Now last night was one of those nights when no amount of counting models at the field could induce a bit of shut eye ,so as I cant do with idle inactivity ,modeling filled the gap.
Cheers
Tom.
Thats interesting did an edit and got two posts ?

Edited By Tom Wright 2 on 05/01/2012 00:50:26

Edited By Tom Wright 2 on 05/01/2012 00:51:52

Edited By Tom Wright 2 on 05/01/2012 00:56:46

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Hi Tom,
Looks like a straightforward build. I'm looking forward to joining in but I'll wait until I know what the complete materials list is as I'd like to get it all in one go to save postage (which mounts up if you buy in bits and bobs). Sadly I don't have a massive parts bin..! So far I've got spruce spars, liteply, and the u/c. From reading the posts I think I'm going to need some carbon and I'm sure I'll need something to complete the rotor linkages….
T
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