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  1. "the unfortunate fate of all these motors" Not the all micromotor got cheap chinese magnet. In the first xy hundred thousand pieces got vacuumschmelze's magnets. So the older motor's magnets much more better, They do not "crumbling"
  2. you can easy to see if you have "the crumbled magnet" problem on transparent motors. Turn the motor in the direction of strong light and look over its side. the magnet is the upper side above the rotor (under the rotor there is a simple iron in plastic holder) You should see a little gap between the magnet and rotor and same gap between the rotor and the Iron. It is clearly seeing in my cutted motor picture. But if the motor is whistles is means the rotor is turning so it is not magnet problem.
  3. Yes, I have motor with transparent shaft and red ring; transparent shaft and transparent ring; transparent shaft with black shaft and you have transparent ring and RED shaft. The reason of this is simple. We produced colorful output shafts and rings too, for the colorful (not red) motors. (only a few pcs from each parts) BUT when we started to assemble them, we recognised the planetary gear tightens with the color gears. That's why we could not use them for the color motors. We produced only a few color parts and we did not try them immediately. We got problem when we tried assembly. The issue (tightens) was caused by the original "output shaft" (black) was moulded from Hostaform not from ABS. And the Hostaform's moulding parameter is totaly different as ABS. So we had to trow out almost the all color shaft, but some of them worked in the transparent motors. (only in the transparent) The all assembly proces was not easy with the "special" parts and we have limited pcs. We had to pairing the parts and try them together lot of times. If the motor did not worked we try with it with other parts until they started to work. This parts is very precis and little different could cause a problem. So it was a luck that the your motor run with red shaft :-) Your motor is the RAREST rare motor.
  4. "Is there a non-destructive way to open these motors?" Yes, there is. BUT You need a "simple tool" to open the motor house. and one other to open the Gearbox. For the motor opening: You can see 4 hole in the top of the motor. if you push in 4 pins at same time to here, motor will open. For the Gearbox opening: You need a special pinchers with the profil of drive wheel. If you pull the drive whell up with this pincher the locking ring will pop up and you can take out the planetary gear and the planetary cog wheel and the parrel. I am absulutely sure that the raison of wrong motors is the magnet. and if you could open the motor , very complicate would be clean the magnet. but even if it succeeds you sholud snaps together the motor again. and for this you need a special tool too. If you see the bottom of the motor you see two little kidney shaped hole. here should push in two very thin needles, and "move" the brushs to the rotor's collector that they do not demage while you pushing the gerbox and the motorhous together again. It is not easy. and the magnet which started to crumbling will not stop the pulverization. And change the magnet is not possible. No we did not make dark gray micromotors. (I do not why. We have lot of grey ABS because we produced the all plastic parts for Mini Motor (injection molding) :-) ) I hope you understand my wrong english :-)
  5. https://www.flickr.com/gp/189156800@N06/5dLz9h
  6. I and my "old" college have some pcs from these motors, if he have not sold or thrown out them. (I do not know this because i did not meet or talk with him in the last 20 years :-( ) Yesterday I went to my garage and I made inventory about my rare parts. I took more photose but i can not upload here because only 100 Kb upload allowed me here. (????? in 2020 ?????) I have 4-4 pcs yellow and purple and 5-5 pcs blue and green and 9 pcs transparent motors. Yesterday I tested them again (last time lot of years ago all of them was good) BUT NOW only 1/3 of them working :-( :-( I dismantled one transparent motor and i saw the typical problem which we had with micromotors and Mini-motors too. The magnet was crumbled. and the magnet dust clogged the little gap between rotor and magnet :-( We used powder metallurgy magnets what we order from China. Lot of magnet started to crumble after some months the magnetizing. Unfortunately It was known problem.
  7. It is one more very rare motor from my "collection" Now I would like to sell it, but I do not know how much can it cost. How much can I ask for it? Story: These transparent motors were made in Hungary (where the all Mini-motor were produced). When the LEGO sold the company, the all workers got one pcs from this transparent and gold-colored motors as memories. Only about 50-150 pcs were produced. The motor is in good condition, well working and never used
  8. I think it would be much more interesting to display this motor in Billund. This is one Segmented micromotor. The motor's all parts were cut and after it assembled. :-) As I know only this one exists. it is my other rare motor
  9. :-) We did not think to sell the motors. it was just an idea of a few bored workers. :-) We made them for ourselves for fun :-) But I have just realised what a big sin we commited. I am thinking about i will sent my all rare things to Billund with one apology letter or i will throw out them ;-)
  10. The motor was designed by BRG about 1989-90. BRG was the biggest Radio Technic Company in Hungary. It mainly produced equipments to the Russia market (military) when the communist regime fails the company lost the all market and went bankrupt. This time the motor and the production technik was 95% ready, so the LEGO establish the LMM Kft-t (LMM Ltd) LMM short form of Lego Micro Motors. Until the produktion did not start we were about 10-20, but later the staff increased to 280-300 persons. We designed and started to produce the motor 43362 (we called GEAR motor) and lot of products were moved from Billund to LMM e.g. RCX, Train motors, Basic motor, Mybot, watches and lot of other thing The company was 100% LEGO property but to be honest I can counting in my left hand how many times we saw leaders or visitors from Billund. This times were different as you wrote !!
  11. I forgot to write the company was in 100% LEGO property, but the CEO and the all leading team were Hungarian
  12. Yes I understand ;-) and I can agree with LEGO's decision ;-)
  13. Wow; one of my old colleague sold this motor. Could you please tell me when and what was the price? (if it is not secret) We produce about 30 pcs from transparent.
  14. Unfortunately I do not remember the price of the micromotor but I am sure it was not much more than the 43362's. The price was not in "other dimension". BUT YES, The material cost of micromotor 2986 was a little bit higher and we spent more time to produce 1 pcs 2986 than 43362. (but the personal costs was very low In Hungary so it is not big effect) so it could be more expensive than the 43362 but only a little bit. I do not think if one (~4-5 USD) motor could makes setts (e.g Technic space shuttle) unprofitable. The reason of the loss-making years of LEGO had to be much deeper. (as you wrote too) Micromotor was one "technical diamond". This motor contained lot of technical miracall,- tecnical solution which was not "general" in the 90' (planetary gear from plastic, miniatur collectors; flat rotor; ect) (and from very low budget) . Nevertheless, or exactly that's why it was not good idea to use in toy. I think this motor was not suitable for what LEGO wanted. Although I do not know what they wanted when launched design tender for the motor. The main target was put motor to 2x2 LEGO cube but we do not know (I think) what the motor will exactly drive. I seen only one time our micromotor in LEGO set. It was a ship and the motor drive the radar. The assambled lego parts amplified the motor's nois. It was horrible. If my children played with this ship more than 5 minutes I would throw out the toy. "My comment was not an attack on your national identity." I know and I have never thougt this. Why did you think that i think this? :-) PS: I wll try to find the micromotor's transfer price. :-) Nobody allowed us to make these parts and the police does not allowe speeding too ;-) and they have never reach the market YET.
  15. I think the reason for the financial troubles was not the price of the motors which were produced in Hungary!!!!!! For example we sold Motor 43362 in 1999 to LEGO for 6.12 DM/pc it means 3,3 USD or 3,1 EUR in 1999 and this price included the value of the materials what we used, the personal costs and a little profit. :-) :-) :-) ONE MOTOR's (43362) PRICE was 3,3 USD :-) :-) :-) The previous "modell" the "heavier" 71427 was a little bit more expensive, but we redisigned the 71427 that we get cheaper motor with same performance. (Just in brackets: this cheaper type had much more better quality) Or one more example We sold the Train motors for 6,41 DM->3,4 USD->3,3 EUR to LEGO I think the reason for the financial troubles was the big change in the toy market. (computer games; tamagochi; price of the RC models, ect, ect) and the LEGO reacted to late to the changes.