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….....………...............--- HandCab-DC – Part 2 ---
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Build Tips:
Sorry, but I didn’t get good step-by-step build pictures for this project. Hopefully the following and the print file pictures will help with that.
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Installing the fishing line:
Take your time on setting/adjusting the fishing line. It will make more sense once the parts are in place.
Refer back to the image above as you install the fish line. The throttle is designed in a way that you have to use the brake after using the throttle. When you move the throttle back to its lowest setting the throttle fishing line goes slack and does not turn the motor controller shaft so the speed stays the same. When you apply brake the line from it to the motor controller shaft double pulley is pulled and the motor controller slows the loco down. To slow down one has to use the brake and to speed up you have to use the throttle (real life situation).
Drill holes in the pulleys about where they are shown above. Keep in mind that the pulleys only travel through so many degrees, not all the way around. As will be shown next I put a crimp on the end of the fishing lines that will wrap around the double pulley. Start with the throttle line and wrap it part way around the double pulley and then part way around the throttle pulley and up through the hole on it. The motor controller pulley should be rotated to where the motor controller is off (zero volts).You can adjust the slack on that line by wrapping it around the set screw on the top side of the pulley between the two washers there and pull the slack out. Tighten the nut to clamp the line from moving.
Do the same for the brake line. With the throttle all the way on adjust the brake line so that the slack has gone out of it when it is in the ‘brake off’ position. At this point if you take the throttle off and pull the brake on it will pull the motor controller back off and stop the loco.
As you can see where the holes are on the pulleys is important but can be fixed and they can be rotated also. You will notice that you can’t rotate the motor controller full on as there isn’t enough travel with the handles to do that. I found that a typical N scale loco would still run over 100 mph with the travel that is there so would think that HO might be similar (let me know).
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To install the fishing lines start with the motor controller on but with no or very little voltage. You will be turning the track power on/off with the limit switches and the reverser handle. Have the holes in the double pulley as shown above for the throttle line and in the other image further above showing both. Note where the throttle pulley also has its fish line hole. Install the line as shown above and take the slack out of it an secure it to the pulley’s set screw. When the pulley is turned by the throttle handle it should turn the motor controller’s shaft.
Follow the same procedure for the brake’s fish line referring to the image further above.
On the next page the sound install will be started. If you aren’t doing sound still go to those pages to see the case details.
========== Throttle Finished & Videos ========
Finished the throttle after spending way more time on it than intended. Here are three YouTube videos that show the completed throttle.
https://youtu.be/wgipUS0k0vE……Overview of parts.
https://youtu.be/y5yvqj4nFIc… Running a train.
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.If you only look at one look at this one ( HERE ), a total overview of running a train and sound capabilities.
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NOTE: At this point I’m not going to continue with documentation and maybe won’t put the print files up on thingiverse.com since there hasn’t been much interest in this throttle and I don’t want to waste my time on it considering there doesn’t seem much interest in building one. If you would like to build one and will follow through with that email me and I’ll reconsider.
A link to the DCC HandCab (modeled off a GP7/9 control stalk) ( HERE )
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