doug72

That’s very similar to the rack I used for the Mk 1 high lift stepper lift, see earlier in this thread. I only used one rack which was OK along with two side beams. Don,t worry about spamming this thread, the rack part worked OK, it was the trips to change rack direction of the rack that didn’t,t. That’s why I change to the way to move the lift without need for a reverser.

Don't think it is possible in such a tight profile, maybe possibe in a 1 x 4 unless anyone else has some ideas ? An image of the 1 x 3 profile woud be usefull.

Here's a mock up, using a 12T gear it,s designed to mesh with the rack in the housing. Using 4 pce angle beam 4 x 2

Yes it can be done BUT only by using studded technic beams.

Nice but some expensive & rare parts. Ideal way to use up cracked parts !!!

MOC Completed Step 6 :- Mount all componants on a single base plate. Done Step 7 :- Build a Ball input box. This will used my design with tilting ramp activated by a simple trip bar. Done. Step 8 :- Syncronise the ball lift with the input box, at first could not get this right, so double checked the build and found that the axle for the top sprocket wheel was 1L too high !!! Lowered and now correct, and one link removed from the chain belt. Next was to position inbox correctly and the stops for the tilting ramp push bar & the stops for the counterweight so that the tilting ramp lined back up with the fixed section. Again a lot of trial & error before working OK. Yellow cross bar axle positioned to load15 balls into bucket per trip. Step 9. Make a video

Re Technic, Gearbox 2 x 4 x 3 1/3, I have some but difficult to build them into a module due lack of mounting hoies - can only be used with 24T gears. I have some 3D printed worm gear frames that work fine with 24T gears, are easy to mount & take up a small space. As they are not Lego cannot use them for competitions. Examples of worm gear box used in GBC Train Modules. Don't understand how you would chain them & can see no way of using thus for GBC.

GENERAL PARTS DISCUSSION should be used.

I have them in brown (3 pce ) , Yellow ( 3pce ) & Green ( 1 pce ). Don't think it will upset the lego purists if I trim the half 24 T gear off !!

Thanks for the reply, I only use them in pairs back to back as worm drive gearboxes in GBC Train modules as they are compact and robust. The half 24T gear segment seems to have no useful purpose.

Lego-block-connector-with-one-half-of-wormed-gearbox Two of these make a good worm drive gear box using either a 24T or 40T gear and has little backlash. lego-block-connector-with-one-half-of-wormed-gearbox-32166-28 What is the purpose or use is the half 24T gear segment at the bottom ? Has anyone found a use for this ? I have cut this off before when this underside part fouled other parts when mounting it into a MOC. Another problem:- it can be difficult to intergrate into other parts of a structure due to 1/2 L problem.

Using facebook can lead you open to spam attacks or disparaging comments. The Eurobricks forum has only had a very few issues in the past with spam and has stopped since new registration info requirements were made. Regarding Postings, why use use two sites at the same time ? Better to upload images & videos to hosting sites, copy links to a file, write required text, use spell check, then copy the text with links and paste onto EB forum. As the Merecat says "Simple" I only have dumb mobile phone anyway but find viewing hard due to small screen size and small text hard to read. Mac Mini with large screen monitor much better for me and easy to zoom in when required. I always review older MOCs and improve them when possible especially if new parts become available.

There's lots of MOCs but they quickly drop off page 1 and out of imediate sight. This is due to the ever increasing number of Super Cars topics each with there own thread. Its time these were grouped under one heading (Super Cars, MODs & MOCs )the same way as the GBC General & GBC Train threads.

Re cracked uni couplings. I use small ‘o’ rings to reinforce them, has worked for me on many projects, will even allow cracked ones to be used again

+10

Step 5 - Use Train Reverser to drive the gear rack. This was the hardest task to achieve - as a standard train reverser would only allow one loading with15 balls before releasing the train car. This means making two trips to fully dump 30 balls into train car hopper. So thinking cap put on and pondered the possible solutions. Also needed to find a way to synchronise the train release trip timing. There are two ways of achieving this. 1/. The train reverser trip rotor has one arm which rotates at 24:1 ratio which matches the rack drive also 24:1. Increasing the trip to 48:1 by using step down 12/24 gears would allow two loadings. Modified a spare train reverser unit but requires use of six uni-couplings to drive both the trip rotor and output to the incline lift drive. Result was a very cramped layout as the drive paths cross each other !! Timing adjusted by sliding the 12T gear out of mesh. Rejected. 2/. Double the speed of the drive to the the incline gear rack using simple 1:2 step up gears with knob gears used for the right angle drive. Train reverser fitted with a clutch and an adjusting knob to allow for setting the train release. Solution 2 was the best & easiest option. Easy to adjust so that the bucket after dumping 30 balls into the train hopper, lifts clear and the train departs. Step 6 - mount all components onto a single base plate. Step 7 Build a Ball input box. This will use my design with tilting ramp activated by a simple trip bar. Step 8. Make a video

New MOC - Inclined GBC Ball Lift (WIP) Update Step 4:- Connect Rack unit to inclined lift and and test. Two new extra large sprocket wheels received today & fitted to the test rig. The rack system has been modified to prevent one end of the rack lifting slightly at one end of the stroke. Full length slide with with guides each side now used. Next set the track belt with bucket to move between loading point and dumping balls into the train car. Rack crank arms used 5L on the LEGO Beam 3 x 5 x 0.5 Bent 90 Quarter Ellipse but travel was not enough so the axle holes at each end of the curved side used which are approx 5.25 L apart thus giving a 10.5 L stroke for the rack. Loading & dumping positions now OK. End of travel for unloading had to be set by adjusting the position of the black 20T bevel gear on the rack relative to the drive axle which allows for adjustments to be made in 90 deg steps. Step 5 - Use Train Reverser to drive the gear rack & synchronise with the loader. This will be the hardest task to achieve - as a standard train reverser would only allow one trip with15 balls to be loaded before releasing the train car. Two trips required to fully dump 30 balls into train car hopper, but how ?

10 years ago when I joined all I built was Lego sets and no MOCs, now it’s the other way round, if I get gifted a set for xmas etc. I build it and strip it down for spares. My early MOCs were not great but as time went by you learn from mistakes and other's knowledge to improve. Time to halt this discussion, and get back to building Lego again, be that sets or MOCs. For me I enjoy the challenge of creating something new, and improving past MOCs. My Last post on this topic.

I find it easy & quick to use Flickr then just copy the BBE link for each image onto my “pages app “, then add text & copy paste onto the forum.

Step 3:- How to drive the inclined ball lift without using a reverser unit ? The bucket lift needs to be driven using the lower axle as shown in photo. (20T Bevel gear shown only for hand testing.) This axle needs to rotate approx 1 full turn to raise the bucket to unload & then one full turn in the other direction to lower bucket back to loading point Initial thoughts was to use Lego gear rack with housing using:- LEGO Housing 2 x 15 x 3 for Gear Rack (18940) & LEGO Gear Rack 14 x 2 with Groove and Connectors (18942 / 60578) Test rig built but proved not usable as the rack travel is too short and could not use a 20T bevel gear. Only gear that meshed was a 12T bevel gear, which would have meant a much longer gear rack to achieve the require travel of the lift. So a bespoke gear rack system built and after several attempts I was finally happy with this sub build. The gear rack is driven by a 2L worm gear and 24T gear with 5L crank arms, with 11L con rods connecting to the gear rack which is 16L long and has two 20T bevel gear engaging with it. One gear drives the inclined lift, the other is to keep the gear rack in place as it moves back & fro. Output axle rotates approx. 360 degs. to raise the bucket and then 360 degs. the other way to lower it again. This drive system runs very smoothly. For testing an M motor was used, final build will be driven by a GBC Train Revereser. Step 4:- Connect Rack unit to inclne lift and and test. On hold until the extra large sprocket wheels on order arrive !! Any questions / comments please ask.

Since Lockdown 1 in April I have built the 42100, which was an enjoyable build but found it not very playable and gathering dust on a shelf. Since then I have built several complicated MOCs, and improved previous MOS, which has kept me sane Mentally active. Most of my posts don,t get any response, but that doesn’t bother me as I enjoy the challenge of getting them to work as intended. Now in lock down 2 now so more MOCs to come .

I thought the 2nd Pinned topic at top of page 1 was there for HELP !

Excellent project, they use these when excavating tunnels, with low headroom.

Inclined GBC Ball Lift (MOC) (WIP) The objective: Build a simple reliable Ball lift for loading a GBC train Car. I had one spare LEGO Excavator Bucket 8 x 10 (2951), so I set out to use this as the starting point for a new GBC module, to be used for loading and powered by a GBC Train car. N.B. Could also be easy to adapted for a stand alone GBC module driven by a PF motor. Step 1:- Determine how many balls the bucket can safely carry. 15 GBC Balls can be carried - so two trips required to load 30 balls into train hopper. Step 2:- Work out the locations for ball loading and discharge. A simple test rig was made for this using large track links with the single bucket attached. The test rig used medium size sprocket wheels, the final version will use the new large sprocket wheels when I receive them. Loading position: Discharge position into Train car, Step 3:- Next find a way how to drive the chain belt without using a reverser unit ?