CustomRCmodels Tank gear-reductions installation
check the included CD's ... one is with some infos and photos to use as a reference for the installation ,
( the second CD is a video-CD what should run on your computer and if you have , DVD player ...
it includes some of my tank-video's .... )
didn't make a written instruction yet , but I am sure with the photos , and the tips below ,it should be no problem at all .
it's a straight bolt on , nothing to modify . I had them installed in my Tiger for testing .
I marked them with L for left and R for right , viewed in running-direction of your tank ,
means look at your tank from the rear ( drivers-view......)
mount the motors first to the gear-reductions , then the gear-reductions with motors to the gear-boxes .
stick both gear-boxes together in your tank , before you bolt them to the chassis .....
About the motor's ....
first you need to reverse the motor-cables , since with the gear-reductions installed the main-gearing runs in reverse direction .
If you install the gear-reductions in a Tank what was already in use ,
I also would switch the motor's around .
Original one motor runs clockwise and the other counter-clockwise .
most likely when you drive a tank , you use more forward as reverse ,
means the motor's are broken in , in one main direction .
by installing my gear-reductions I recommend to switch the right motor over to the left gear-box and vise versa ,
to maintain the same "main-running-direction" ...you get the idea .... ?
About the gear-reductions .....
double-check that you have some gear-backlash , since I have experienced that some gear-boxes , even if they are new ,
a little bend out of shape , what effects the motor-mount-positions ( in this case the gear-reduction ) .
the mounting-holes are drilled the same size as the original motor's , means , nothing really to adjust , but still that little bit play to give more or less backlash for a smooth operation . On the gear-reduction itself you can use the motor's from a Tiger 1 with the 10 tooth motor-pinion , or from the old King Tiger with the 12 tooth motor-pinions , there are several holes for the motor's on these gear-reductions .
make sure your main-spur-gear on the original gearbox doesn't have to much wobble , sideways play ...
if so , double-check that the set-screw from the output-gear of the gear-reduction doesn't touch the spur-gear !
Tamiya uses Phillips-head countersunk-screws to bolt the gear-boxes together , on some gearboxes these screws are not complied flush
with the surface , since the gear-reduction's cover portions of these screws , make sure the gear-reductions mount complied flush
to the gear-box ( I did grind a bevel in these areas of the gear-reductions , so it should be okay .... )
on all my gear-boxes I made the counter-sunk-holes deeper at one time and used different screws , so I didn't had that problem ....
if you ever want to take them apart , please disassemble only by opening the stainless-steel-allen-head-screws ,
( takes a 2mm allen-wrench ) , the small countersunk-scews also used , are little bit tricky to work with and can get messed up real easy !
I also included additional 2.5mm 5 mm long stainless-steel-allen-head screws to mount the motor's ( much easier and better as the original Phillips-head-screws ) .
use the little lock-washer's for mounting the gear-reductions and the flat washers for the motor's ...
don't use the lock-washers on the oblong mounting-holes for the motor's !
The motor-pinions are mounted with a standard US size screw , 1/16" allen-wrench needed , if you need to adjust them ......
don't use a 1.5mm metric-allen-wrench , like included in some Tamiya kit's , they are a little bit to small and you strip that small setscrew .
so if you don't have it , you need to get a 2mm metric-allen-wrench and a 1/16" allen-wrench .....
I wanted to include them , but haven't gotten them yet ....
I use allen-wrenches with handles ( like a screw-driver ) , they are great to work with ,
since these allen-head-screws will stick on the end and you can insert them in hard to reach places ......
I use on all my models stainless-steel allen-screws , I hate these Phillips.....
well I guess that's it so far ....
please let me know , how you like it or if you see anything what could be changed , improved .....
cell-phone : 860-836-4652