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I am very fortunate to have had the opportunity to purchase a H Model 40% (1:2.5 scale) Duo Discus with a 8m wingspan. This model was produced by H Model (Radim Horky) several years ago now, about 2007 if I remember correctly.
I became aware this airframe was on the east coast last winter. Having built 2 other models by H Model I knew that I really wanted to buy this if at all possible. After several months of hoping and pleading I was able to convince the owner to consider selling it to me........which I should mention he did very reluctantly. It is no longer produced, so having the chance to have this in my collection is great.
Radim Hork (H Model) produces incredible sailplanes. The workmanship is excellent and the scale detailing is very good.
I think this particular airframe was originally completed in 2007. The original build of this airframe is excellent and it is obvious the original builder put great effort and thought into the work and choice of equipment. The control surface linkages on the wings are all internal, keeping the wing surface and airfoil very clean. All of servos and surfaces are very well set up. The servos that are installed are a mixture of the top end Hitec and JR digitals that were available at the time of the build.
I am considering updating some of the servos in the airframe with either JR 8711 or JR 8717 servos. The 8711 are high torque, somewhere in the range of 350 to 400 in/oz of torque. The 8717 are the high speed servos with a torque of about 200 in/oz. I think Radim had recommended the Hitec servos as they have a higher torque rate about 330 in/oz.
I will be setting up the sailplane with 2 JR dmss receivers tied into a JR Duo Xport, with a capacity of 14 servos, Power regulation is via a PowerBox BaseLog to set the voltage output at 5.9v using a pair of Duralite Lithium Ion 5200 mAh battery packs.
I started some of the preliminary work tonight be removing the some of the wiring and extra electronics in the fuselage to have a better view of the the connections to all the controls and functions of the model.
I also pulled out the instrument panels in the front and rear so that I can produce new instruments. The panels look great, but because it has been several years the printed paper backs have warped slightly due to temperature and humidity changes. To make the replacement printed paper instruments I used the originals and scanned them at a high resolution and then did some touch up work in PhotoShop to make sure of consistency between the various indicator dials. The panel was then printed on a color laser printer and the resulting paper panel is then glued to very thin ply using contact cement. The new panel and the ply plate are carefully cut after the glue had set and then will be placed behind the instrument face. I'll use either acetate sheet or packing tap over the paper face to simulate the glass instrument covers.
I will have Callie of Callie Graphics make the registration number, tail lettering, and any other graphics work needed of this airframe.
Pictures will posted soon of the progress
I became aware this airframe was on the east coast last winter. Having built 2 other models by H Model I knew that I really wanted to buy this if at all possible. After several months of hoping and pleading I was able to convince the owner to consider selling it to me........which I should mention he did very reluctantly. It is no longer produced, so having the chance to have this in my collection is great.
Radim Hork (H Model) produces incredible sailplanes. The workmanship is excellent and the scale detailing is very good.
I think this particular airframe was originally completed in 2007. The original build of this airframe is excellent and it is obvious the original builder put great effort and thought into the work and choice of equipment. The control surface linkages on the wings are all internal, keeping the wing surface and airfoil very clean. All of servos and surfaces are very well set up. The servos that are installed are a mixture of the top end Hitec and JR digitals that were available at the time of the build.
I am considering updating some of the servos in the airframe with either JR 8711 or JR 8717 servos. The 8711 are high torque, somewhere in the range of 350 to 400 in/oz of torque. The 8717 are the high speed servos with a torque of about 200 in/oz. I think Radim had recommended the Hitec servos as they have a higher torque rate about 330 in/oz.
I will be setting up the sailplane with 2 JR dmss receivers tied into a JR Duo Xport, with a capacity of 14 servos, Power regulation is via a PowerBox BaseLog to set the voltage output at 5.9v using a pair of Duralite Lithium Ion 5200 mAh battery packs.
I started some of the preliminary work tonight be removing the some of the wiring and extra electronics in the fuselage to have a better view of the the connections to all the controls and functions of the model.
I also pulled out the instrument panels in the front and rear so that I can produce new instruments. The panels look great, but because it has been several years the printed paper backs have warped slightly due to temperature and humidity changes. To make the replacement printed paper instruments I used the originals and scanned them at a high resolution and then did some touch up work in PhotoShop to make sure of consistency between the various indicator dials. The panel was then printed on a color laser printer and the resulting paper panel is then glued to very thin ply using contact cement. The new panel and the ply plate are carefully cut after the glue had set and then will be placed behind the instrument face. I'll use either acetate sheet or packing tap over the paper face to simulate the glass instrument covers.
I will have Callie of Callie Graphics make the registration number, tail lettering, and any other graphics work needed of this airframe.
Pictures will posted soon of the progress
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