dr_spock

It has been a while since I've done it. I believe you should have enough parts to make the jacob bogie and replace the technic axle bogie on the unpowered engine. There are 2 bogies with couplers on the end passenger car of each set. That 4 sets of wheels. 2 for the jacob and 2 for the unpowered locomotive. At least there are enough wheels. You may need some additional pieces to make the jacob look like the other ones.

Yup, that is case unless you're only powering one of the two locomotives. I ran one PF train motor in my double HE set. It worked better after I replaced that technic axle bogie on the unpowered engine.

Would extending the length of your coupler mounting pin down a bit and sticking a soft springy material in between the grooves of the pin work for self-centering?

I think big makes it harder to lose sight off. How many times I put down the smaller IR speed control on our LUG train layout and couldn't find it again. They should make them in bright Friends colours.

Nice work. Don't forget to mark/label the motor has been "reversed" for future reference.

You can also replace the Technic axle dummy bogie with one using the metal axle train wheels. That'll reduce quite a bit of friction so that one motor would work better.

Maybe putting friction ridges on the pin part like the black Technic pin will keep it from flopping around and stay in position but still able to pivot in a curve.

Taking the existing Boost circuit board and repackaging it in a smaller case minus some not needed components and reusing code from the Boost app would be a quick way to get another product up and running at a lower development cost. Hope someone will do a tear down and see if that is the case.

I think if you only couple and uncouple on straight tracks and there is enough friction between the coupler and draft box that a uncoupled coupler won't move off center from vibrations, you could probably get away without centering springs on a model coupler. On the other hand, self-centering can avoid prototype labour costs of having to hire a minifig to manually center it.

Welcome aboard, Charette.

It could be the time it takes a bootlegger to get a copied product to market is much shorter now than before. It is not hard for a competitor to put together the big picture from small tibits of information that leaked. I made my own bluetooth controller and driving by slider on a phone touch screen is not all that great and lacks tactile feedback. Maybe I am an old geezer and don't get this new fangle tech but I hope they use actual physical knobs and levers. We find PF IR works fine under our large outdoor tent on a sunny day. I would rather implement a Positive Train Control system before I let the kids drive the trains at our outdoor picnic events. Something to engage the "emergency brakes" if the kids are going too fast into a curve. But kids love it when our trains goes flying off the curve of death at the bottom of the layout's downhill incline.

It will work with 8884 IR Receiver. https://shop.lego.com/en-US/LEGO-Power-Functions-IR-Receiver-8884

There is much freedom being a Sea Rats. You can let it all hang out freely too if you don't feel like wearing anything. There is no dress code in the rules.

Star Wars: Attack of the Clones.

Fantastic ride. Need a barf bag after the video.

I should be working on my project instead of browsing EB.

Nice job. Very clean. I am not sure if milk came in cartons during the the BoBS era.

3D printing might be more economical too. You can get a kilogram spool of ABS plastic for about the same price as a 375 piece LEGO set.

Welcome aboard, Matt. Which convention did you attend?

Good use of the brick separator. All fun to see other uses of that useful part. Nice work.

You can experiment to determine the safe speed through your curves by increasing speed at each iteration and taking note of the speed. Then post speed limit for your train engineer to follow. Cats don't seem as excited in train crashes as kids.

Nice work. Nose looks good. Santa Fe 6 by Eric B, on Flickr

Thanks. That's a good deal on AliExpress. I can grind out 69 axles from $2.59 worth of piano wire. Not much of a savings, the fun was in learning to make tooling and G-coding by hand.

Clever use of the sails. You could say that 2509 is the address number of the church...

I think to avoid confusion during the challenge judging by our esteemed panel of judges of which build goes with which category, it is better to have a separate thread for each category as per the rules.