doug72

Use this its free. https://www.eurobricks.com/forum/index.php?/forums/topic/97921-flickr-tutorial/

Thanks as I expected. Too many different control systems on Lego now,

New Technic Motors. Will the new L motor 88013 & XL motor 88014 work with EV3 and are the cable connectors compatible ? If not would a converter cable work ?

Improved ball inlet hopper now installed and 30 balls can be loaded without any escaping. Loading time reduced to 4 sec and module cycle time is 60 secs. Train dock along with EV3 touch sensor & EV3 motor will now be transfered to a new GBC Train module I am developing.

I had thoughts of an inverted circle of straight track eased to form a large hoop with rails inside & engine running inside the hoop, but it would be about 2m in diameter, ideal for social distancing !!! The hoop would then roll along the ground.

Thanks - Here's a video of my Maintenance Train on the garden railway. Lego Loco (7939) with 4 MOC cars. Behind engine - Crane car - Nuclear Flask Wagon - Open spoil wagon - Maintenance crew wagon carrying two bogies to repair shop. PF control doesn’t like bright sunlight - can be hard to control engine. This May is the warmest and sunniest on record here in the UK.

Took several attempts with many derailments to get it to run OK. I have more track but only standard Lego R40 curves, I try to ease the curves by using curve - straight - curve - straight. Plus grass growing !!! It from an now disused layout in my attic built for our grandkids who have now grown up.

Pop Up Garden Railway while in Covid19 Lock Down and in sunny weather. Filmed using camera mounted on a empty Maersk container wagon and pushed by a small 4 wheel shunter loco.

Thanks, managed to fit it in place without any changes to the main structure and still able to use max length of the 32L axle that drives the traversing. Took a while to get the traverse programming correct.

Have added a step gears to give an increase of 1:3 for traversing using 24:8 step plus 2 x 16T gears to keep output in ,line with the Large EV3 motor. Re-programmed EV3 to get desired travel. Tested and cycle time much better and should meet 30 ball per minute. Just need to improve input chute to load 30 balls per trip.

Thanks for your answer. I don’t have any spare Medium Motors. Final drive for the traversing carriage is by 24T gear & 2L worm gear.(which slides freely on the 32L axle. It can be speeded slightly by using a 20T double bevel gear with the new short worm gear BUT this worm gear does not slide freely on the 32L axle. Speed would only increase by 1.2. Catch 22 applies. Looks like I will have to add a step up gear into the traverse drive line probably using 20/12 step up gears & 2 x 16T gears to keep input and output in line with 32L drive axle.

EV3 Motor speed - is 100% the maximum ? At present I have the motor speed set to 100% for my GBC Tranfer Crane. The traverse mode is too slow at 30 secs each way. Is it possible to increase the large motor speed by raising the speed to say 150 %. If not I will have to incorporate some step up gearing to reduce transfer time. see video

GBC Transfer Crane using EV3 control Tested & Completed. Finally got this programmed and after a lot of attempts got the inlet ball chute to release balls as the train car hopper lands on location beams when elevator arm is fully lowered. Dwell time for loading balls a bit long at 8 secs and could be reduced to 4 secs. Up 30 balls can be loaded and transported OK. Many balls went astray during testing and adjusting. Once program loaded you have to ensure the start postion is correct with train docked and ball hopper located within the lifting frame, otherwise it will jam. See video which uses a turntable module to demonstrate the two loading cycles.

Look like Technic red rubber bands.

The gear ratio when using a worm gear is always the same as the number of teeth it is meshing with. i.e. Worm = 1, / 24 T spur gear = 1:24 reduction etc. With a two start worm gear that would be 2:24.= 1:12 ( which Lego don,,t make)

The new worm gear which is 1L which can be hard to mesh with 12, 20, 26 T double bevel gears and usually requires a 1/2 L offset. There is an earlier topic about various ways to achieve this. Also this new worm gear has friction on an axle, unlike 2L worm gears are without friction on an axle.

There was a discussion topic on this way back in Nov 2017. I have a book which has chapter on this subject with 50+ examples of supposed Perpetual Motion - NONE of which would worked. See this topic: unfortunatley the video showing it apparently working no longer available. but it must have had either a hidden motor or HOG pulling a string off scene. I made a Mock PM GBC module, which would have used a hidden motor behind the white back scene had I finished it. See this post

NO

Thanks for the info, I will try the local computer shops first to see if they have ready made or can make custom ones made.

Thanks for the info, I will try and see if I can get them in the UK to cut down on shipping cost from USA.

Having obtained an extra Medium motor installed it into the GBC Train module I am building. Had quite a struggle gettting the inflexible EV3 cables from the motors to the EV3 block and ensuring they did not foul on any moving parts. Module uses two medium motors and a Touch Sensor which starts the module. Motor 1 drives the module / motor 2 operates the trip to exit the train unit with a full ball hopper. Does anyone know the connector designation and are more flexible & longer compatible cables available ? On Lego on line shop, EV3 cables listed out of stock. Managed to build a simple program to run the module which starts every time train unit arrives. EV3program

Thanks for that info. Brickowl sellers are using both numbers, hence my confusion.

Update:- Will now use EV3 motor to run this module, extra EV3 medium motor arrived today and will replace the PF M motor used previously on a failed attempt to time & sync the module. Due the large size unable to fit a Large servo motor as it would foul the swing arm counterweight. Train reverser from my Gantry Crane GBC Train module will be used which has a touch sensor to start the program and an EV3 medium motor to operated the reverser trip along with a cam to stop the train motor as it docks in the reverser unit.

Lego Medium EV3 motor arrived from Lego Belgium in 3 days from ordering on line. Tested and fits in intended space and has enough power to run a GBC Train module with 30 balls per trip. Now to add Train reverser unit and program the movements required to load & transfer balls to the train unit.

Found this on Brfickowl. I think the different numbers refer to motors when in a set & individually.