ADAPTATION OF SKYSENSOR 2000 ON LOSMANDY G11 MOUNT
The thing seemed feasible since others had already done it. My personal specifications were nothing to machine on G11 to be able, in the event of failure, (and yes, one, is well forced to think of it) to go up the original motorization.
Moreover, I wished not to use the SS2K gears to remove the backlashes which they induced.
This imposes a Re-parameter setting of the
characteristics of reduction of G11: -036x360
instead of 036x144 for the SP-DX.
New caps for the Vixen engines were even designed,
but a little too difficult to machine for me, they will remain as project. Those
are drawn on the overall level.
The plans are in PDF format, I can provide them in DXF. for the interesting people
ALL THESE MODIFICATIONS CAUSE LOSSES OF MANUFACTURER GUARANTEE AND ARE
MADE UNDER YOUR OWN RESPONSIBILITY.
For an axis, you need three parts:
- A motor plate, screwed on the SS2K motor by
its 4 original threadings .
This plate includes a large hole making it possible to let pass the extension part of axis (show here with a piece of the Losmandy coupling) and 4 holes in which one sees the 4 fastening screws on mounting.
It is necessary to envisage by axis, 4 screws CHc M3x10 and 4 screws CHc M3x12
- A mount plate mounting, screwed on G11 mount
by the two fastening screws of the Losmandy motors.
This plate is screwed on mount by its two original screws and includes 4 threadings making it possible to screw on it the motor plate. The same large hole makes it possible to pass the axis of the SS2K motor.
- An axis adapter, fixed on the axis of the
engine of the SS2K, transforming the diameter of axis of the SS2K into diameter
identical to that of the Losmandy engine.
After machining and assembly of the parts and modification of the caps of the SS2K motors, first test. Catastrophe, the yellow keys for manual pointing do not work when the required sign "-" is put in the SS2K motors parameters.
There is a bug in this software version of the SS2K (V2.09). The only way of solve this problem it is to wire motors (MT3) so that they turn to back
It is probable that only this version of the SS2K
is affected of this bug. After having carried out this small modification, all
functions with wonder. The parameters which I use are as follows (after
modification of wiring):
Speed: 0000-0800/8/8 32 2.0
Gear : +036x360 +036x360
Modification of wiring to make turn the engines to back :
- Reverse the wire red and black which go directly to the engine (pins 1 and 4 of base plate DIN 8pts)
- Swap channels A and B of the encoder so that
the SS2K sees the engine turning in the good direction (pins 2 and 8 of base
plate DIN 8pts)
And it is done !! This is to be made for
the two engines.
Do not hesitate to contact
me for all questions