Andy Green

Dave Smith Models - Saphir

At the patch

21. Post flying modifications

I also splashed out on some fancy oleos.

20. Post flying modifications

When building I took measurements from the plan as to the location of the undercarriage, and placed them at the thickest part of the wing. This in hindsight was too close to the CG, and the model keeps tipping up. So after a years flying I got so fed up with it, I have ripped the retracts out and installed fixed undercarraige 30mm further forward.

19. In the air

First flights were done with the cowl off to make palying with the engine simpler, I needn't have worried. Has to be the best model I've flown (To date).

18. Installation

YS 110 with an Hatori 4s pipe, you can hardly hear it in the air. If you open the full size image you can see the M3 inserts uses to fix in place. The other shows the radio & retract installation. I've used an electronic air valve, the small heat srunk item to the right of the Rx is a hall effect switch, lets me turn the model on / off with a small magnet from the outside. http://www.t9hobbysport.com/hall-magnetic-switch.

17. Cracking on

Model is painted with rattle cans from a car paint show. The guy is able to match the paint to the film. Wings are Profilm white with solarfilm trim, and the checked underside is Hobby King covering which is suprisingly good.
Canopy is held in place with M3 screw inserts, as is the cowl. I have given up on gluing canopies these days.
The canopy shows the voltage of the Rx pack and a small pressure gauge for the retracts.

17. Cracking on

Cracking on now but not many photos. Fuslelage complete / glassed and primed.

16. Wing fitting

One of the problems I faced was with the belly pan, so I've decided not to use it, but make my own tank bottom and wing fairing. The front section is removable to allow access to the tank area.

15. Elevator pushrod

Elevator pushrod development, much easier to fit at this stage.

14. Initial Tailplane setting

Tailplane trial fit. Jigged the fuselage to 0 degrees and looking for the same on the tailplane, 0.1 degrees is good enough for now, I will make final adjustements when the time comes to fit it properly, all I need to know is its not far out because by the time I fit it propperly the fuselage will be covered.

13. Wing fitting

A couple of work in progess shots, the wing seat doubler and the fin assembly.

12. Wing fitting

I use Robart hinge point nearly everywhere these days, and to help with fixing I add an anchor behind the trailing edge facing to double up the thickness.

11. Ailerons

Ailerrons marked and cut out, I cut out to plan, then trim to add facings, I use a balsa stripper here set to the facing thickness (1/4").

10. Wing fitting

Nows the time to check the wing incidence when I can still do someting about it +0.3 degrees is spot on.

8. Wing fitting.

Simplest solution I think was to plug the existing holes with dowel, and add 1/8 (real) Ply and re drill in the correct position. ALso now gives me a 1/4" F2 for the wing dowel.

9. Wing fitting