The ScaleJet International Sikorsky S-76 c+ model is a fully licensed model and all rights are reserved.
Any reproduction of this model in any way or the pages contained herein are strictly prohibited. ScaleJet
reserves the rights to make any technical changes without notice. This model is intended for sale by ScaleJet to
the model helicopter hobbyist for personal enjoyment and not for commercial use,reproduction or re-sale.
ScaleJet International does accept any liability for its use. It is up to the modeler to produce and operate a safe
model since ScaleJet cannot control how the kit is assembled after the sale.This responsibility relies solely on
the end user/purchaser of the kit. This model is available for sale exclusively through ScaleJet and its agents.
Model Helicopters are not toys and should be treated with the greatest of care during assembly and in the
operational maintenance to ensure safe operation.
    This is by no means a beginners kit and it should be understood that the end user have an extensive knowledge
of building and flying large model helicopters before building/purchasing this kit.

Welcome again to another on-line build up.This build-up will help illustrate the procdures for this expert
level kit. You may chose to do things different but these pages will guide you through the basics of
preparing our kit for flight.  This is a build-up of the prototype body, production bodies are white
gelcoat finish and have some improvments over this original body.Enjoy and feel free to e-mail us or
call with any questions you may have while you build your model. Much effort and expense has been
invested in this model to produce a top quality product and we are here to support you and ensure your
enjoyment of this wonderful model by ScaleJet International.

......
  We start of course by cutting out all openings(most openings are factory cut) and washing the body down with
white vinager and soap to get all the release agents off and cutting dust out of the body. The next step is fit cowls
and pre-fit doors. There are a number of ways you may chose to hang/attach doors but I chose to use Robart gear
door hinges trimmed down to obtiain the stock hidden hinge look. Two hinges for each door including two each
for main landing gear doors does the trick nicely and securely.
  On the cockpit doors and passenger doors it is nessacary to angle or bend the hinges to obtain a straight path for
the hinges to open on curved surface...much like Huey doors are done. Small slots allow almost 90 degree operation
which is nice for access later. 1/4" wooden mounting tabs are shaped to the inside of the jambs to provide flat
mounting surfaces for the hinges to attach to. Take your time here, tack with CA glue then once all is fit, glue them
in with HYSOL or BVM type epoxy.
   On the main gear door area this is not needed as this area is Kevlar/Carbon enhanced and opening path is on
a straight line. Gear doors can be bolstered with 3/16" balsa to add a more scale appearance. In all cases it will be
nessacary to trim the inner portions of hinges as shown in the cockpit and passenger door areas. (See photo below).

.
This is the prototype body (production bodies are white gel-coat). Here you can see how the use of  the Robart
hinges are installed. Slots cut into the jambs only allow full opertation for the gear doors. Rough blasa work can
also be seen going into the gear doors.This is optional for appearance only.

 Here is a better shot of the hidden hinge installation. Wood is dry fit at this point and there a few pieces
left to fit such as the servo mount for front gear. I like to tack the wood in place with CA then follow later
once all is well with BVM or HYSOL epoxy.

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 Here you can see the bends in the lower hinges to maintain a straight line in the swing path of door. Here
the top supports are fitting to the body support bulkhead (inner ring). Later we add the upper mechanic
braces off these areas to the mechanics. This creates a lot of support for the entire body and mechanics.

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This area has the kevlar/carbon reinforcments to make the gear area very stiff and strong. Shown here is the
main retract bulkhead test fitted and only a little sanding was needed to get it perfectly snug without distorting
the body. The servos in this picture are to operate the gear doors themselves, standard servos do the job nicely
with 70mm pushrods with links.This is actually a 1/4" thick bulkhead with machined reliefs that make it very light
but still very strong.
  Note: The relief side of the main gear bulkhead will actually face the REAR of the helicopter.(Shown in upcoming
pages).We find this is best for landing gear strut function! reliefs must face REAR of helicopter.

  If you like you can download the video to see how the gear doors work here Gear Door Video.
(These will be slowed and timed using a gear door sequencer once final set-up and gear installation is complete)

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Any reproduction \copy of the images or text on this website is strictly prohibited.

ScaleJet International
    P.O Box 35-7684
Gainesville, Fl
U.S.A
32635-7684