jaumeBCN

I used a GPS to calculate it on the second, the first one ran more than me, so I made a 30 meter strip on a basketball court (on a park) took the time and with fancy mathematics calculated it

the 27 Km/H LEGO car, isn't pretty but it works, it used two old motors, driving a overdrive tranny (wheels spin at 6000RPM) the sad: Is a charm running on indoors, but outdoors even crushing an Ant slows it, also the 27 Km/H are only attainable on extremely favorable conditions, like having fresh NiMh batteries on the box (has to be NiMh, alkalines made the protection jump, also once that protection on battery box was removed, Alkalines just began seeping acid...) Later I did this second model, capable of 20 Km/H with only a motor. This one corrects the first one's main failure, lack of inertia, now it uses 8880 set's wheels, also has diferential for good measure (and because this at first was a prototype for a 1896 Ford) Is amazing seeing this compete for speed with model 1. Also has steering (due the model 1 ending demolished after a crash)

Tomorrow I'd tryout a 100% LEGO build free run prototype with a estimated speed of 27Km/H

nice (I'm planning to replicate the Titanic's watertight door, and I can use a lot of this...) (actually I plan to put a clutch , release it and door goes down by gravity, engage the clutch and conect motor and it goes up, cut the motor and the door stays up by the magic of wormgear (until you release clutch)

did you put shock absorvers on the track tensor wheels? (the ones directly opposed to traction ones) those are springed to keep track tensed

Was going to comment about this, did seen that LEGO gearbox is just a 2 speed deal, so in the 8880 it's two gearboxes, the second one set as an overdrive, because of this, the direct is actually the second speed, being the 3rd and 4th overdrives... I planned of reversing the overdrive gears so they act as a low gear (dunno the English name) and place it on 1st/2nd section of gearbox. Also found that the simulated v8 is placed behind a chain (bad idea to put torque there) so actually I plan on putting the 9v motor after the chain, on the primary gearbox axle (edited post to include proper mechanic terms, sorry if you'd get lost) sadly I fear I must get the set to fully understand how it works. Besides. ¿It's legal to lube LEGO? I understand lots of parts could use some of the stuff (Ceramic grease because it doesn't attack plastic)

Thanks, I did fear that... such thin axles for that mountain of a car...

yep, I am planning to get this beauty, my question is, what happens if the gearbox is put in the middle (neutral) position? The v8 motor is unlinked to the wheels?(like a real car) On my late childhood fantasized about swapping that V8 for the 9v motor of that era, and from youtube I am doubting if doing that is even possible (many arging about that 9v motor not having any torque), well I suppose for it to be just your average Mabuchi branded deal, present on all toys, and capable of anything with enought reduction gear. I'l let it here because I'm drifting...

Release a PC compatible version (I'm tired to run it on safe mode so it don't crash every minute)

randomly pick two or more simple common sets, and people is asked to using only the parts contained to make a MOC, then place a votation and choose the winner (no prize, just for kicks) LDD use allowed.

I openly prefer those vintage sets over what they make now (BTW, for me a minifig car is 4 brick wide 1 or 2 seater and a scale of 1:43)

I don't like either Mindstorms or Licensed stuff... But the good thing of bricks is that you can do whatever and you got a nice lot, so congratulations...

ouch, wanted to do that, but do not want to use arduinos... (pneumatic engine RC car)

This is weird, years ago browsing an old book about trucks, did read about this vehicle (also seen a picture) It's a wagon, motorized with an electric motor, operator was standing at the front, operating it with a single lever at it's right. (Historically, twisting the handle revved the motor, a smaller lever operated the brake, moving the handle sideways operated the front steering), under the cargo box were the batteries (with port for recharging/ battery meter) on it's day this was used for all the freights inside factories (coal, machinery pieces...) a vehicle like this appears on the 1925 movie "Metropolis" , apparently set on year 2026 (!) At least on late 20's Spain, a version was modified for city deliveries (shorter sides). Sadly this model is built largely from 15 years old memories (when I did read the book) So, I can't guarantee every detail to be spot on, for starters the placement of battery charge port at left side (that was a wild guess) Also did place a small bumper under the operator that I'm not sure it was really present. The Minifig is made after "Georgie" from the movie Metropolis, so it looks like a Edwardian era factory worker. This is the only picture I found, (besides the scene from the movie) Aparently it's a "shop truck" dating this picture from 1914 The movie "Metropolis" The scene is at minute 23:10

Back at the time had it on a wooden box, ordered by stratification. now before I got any important quantity, plan to clasify it by colors using empty pineapple salad containers