Truly a remarkable project, Max. I recall our conversations where you described the difficulties of getting such a small engine to operate. Glad to see that overcame all of the challenges...with flying colors!
I tested a lot of tiny coreless pager/vibration motors. Most of them cannot stand up to continuous-duty running and will burn out the brushes in just a few hours if used that way. But some are built with sturdy commutators and brushes and can be used in a loco. After torture testing several motors, I chose 304-11J from Precision Microdrives. It is a 3v motor. There is a tiny surface mount 1/2 watt 150 ohm chip resistor on a tiny bit of PC board mounted in the tender with the motor to drop the maximum 12v track voltage to a maximum of about 3v. It draws so little current that this works fine with no heat. The tiny 1mm diam motor shaft is sleeved with a piece of stainless steel capillary tube (hypodermic needle stock) that is 1.0mm ID, 1.5mm OD, to lengthen it and allow a worm with a 1.5mm bore to fit correctly
@@mmagliaro It's an incredible job! I had tried different vibration motors and I didn't find any with enough strength, seeing your work I will rethink its use.
@@kidnorman None of them really do have enough torque. The key here is that I have a double-worm reduction drive mechanism I built in the tender. You can see it in the photos in the first part of the video. The motor has a worm on it to a 20 tooth gear that spins horizontally in the tender floor, getting you 20:1 reduction. But the shaft from that floor gear goes through the floor to ANOTHER worm that then mates to a final 20 tooth gear on the rear axle. You therefore get 20x20 = 400:1 speed reduction, and 400:1 boost in torque. I do not generally recommend those tiny pager/vibration motors because they are so weak. But given the space constraints here, there really is no other choice.
Truly a remarkable project, Max. I recall our conversations where you described the difficulties of getting such a small engine to operate. Glad to see that overcame all of the challenges...with flying colors!
Excellent work!
Max -- awesome project and execution -- you are pushing the envelope as always .
youtube suggested I watch again. so I did. still looks good.
well done.
Thank you most sincerely, Victor.
well done,Max!
Thanks for sharing, haven't seen a post from you in a while... had to check to see if I was still subscribed? Thanks again for sharing 😁
You are good 👍
it is an incredible job! have you used a 12v motor? do you have a reference of the motor to be able to acquire it?
I tested a lot of tiny coreless pager/vibration motors. Most of them cannot stand up to continuous-duty running and will burn out the brushes in just a few hours if used that way. But some are built with sturdy commutators and brushes and can be used in a loco. After torture testing several motors, I chose 304-11J from Precision Microdrives. It is a 3v motor. There is a tiny surface mount 1/2 watt 150 ohm chip resistor on a tiny bit of PC board mounted in the tender with the motor to drop the maximum 12v track voltage to a maximum of about 3v. It draws so little current that this works fine with no heat. The tiny 1mm diam motor shaft is sleeved with a piece of stainless steel capillary tube (hypodermic needle stock) that is 1.0mm ID, 1.5mm OD, to lengthen it and allow a worm with a 1.5mm bore to fit correctly
@@mmagliaro It's an incredible job! I had tried different vibration motors and I didn't find any with enough strength, seeing your work I will rethink its use.
@@kidnorman None of them really do have enough torque. The key here is that I have a double-worm reduction drive mechanism I built in the tender. You can see it in the photos in the first part of the video. The motor has a worm on it to a 20 tooth gear that spins horizontally in the tender floor, getting you 20:1 reduction. But the shaft from that floor gear goes through the floor to ANOTHER worm that then mates to a final 20 tooth gear on the rear axle. You therefore get 20x20 = 400:1 speed reduction, and 400:1 boost in torque. I do not generally recommend those tiny pager/vibration motors because they are so weak. But given the space constraints here, there really is no other choice.
What, you couldn't figure out how to make the figures move too? Pfft.