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Toolmaker72

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  1. 👌 really like the nicely modified models 🙂
  2. Recently whilst in covid lockdown I had a wizz around the front concrete drive and front garden with a grasshopper 2 super g, a rising fighter fitted with oil dampers and my version of a slightly lowered and modified rear axle to stop it tramping and a fighter buggy rx. The fighter buggy chassis was far better over the bumpy front garden and harder to flip over on the concrete.
  3. Job well done 👍, I’ve built a sand scorcher body on a grasshopper 2 chassis and that looks good. I’ve been wondering about the f150 body and you have proved it works very well indeed 👏
  4. That’s my lot when I moved from Essex to South Wales 🙂
  5. Lotus Carlton is the Griffin I would like to own. I missed the boat on those when prices were reasonable Did Australia get a version?
  6. Vauxhall and Opel are remodelled Citroen’s now 😟
  7. I was trying to show that timing is possible with the old plastic ended motors provided you alter the can tabs to secure the end. Otherwise it’s neutral
  8. In answer to your question, undoubtedly yes!
  9. From a manufacturing perspective the standard motor cans and endbells will be mass produced. The rotors inside will be different. Try explaining to a worker the difference between 5-10 degree timing and assemble the correct parts to correct rotors. All pictures I’ve seen show the cable tabs inline with the magnet gaps and therefore the brushes at 90degrees to those. The older standard motors have 3 notches in the cans so they could in theory have positive or negative timing introduced but the tabs holding the back on would need to be modified to suit if twisting either way to run in with those settings. It would give access to positive timing if running one motor in reverse to match a forward running motor with positive timing.
  10. So reading this thread there doesn’t seem to be any comparisons to prove number of turns x wire cross sectional area being the deciding factor of a motors potential rpm. So I’ve measured the wire diameter on a couple of rebuildable motors. a 19 turn stock motor a 27 turn stock motor and compared to the latest post above with a black can Tamiya sport tune 23 turn motor. With no load my 19 turn stock audibly spins slower than the 27 turn version. wire measurements below. After calculating the cross sectional area of the wires and then multiplying by the number of turns this gives the total cross sectional area of the copper per winding. Each of these motors has 3 windings so if magnets and timings were all the same the motor that would spin faster is the one with the lower total cross sectional area of copper per winding. In this case my 27 turn motor actually has the smallest amount of copper surface area and does spin faster than the same brand, timing and can magnet 19 turn version. What I’m trying to prove is that you can’t rely on a motors performance by simply referring to the turns per winding. The measurements I’ve used show the motor with the potential higher rpm for voltage is a 27 turn then the 19 turn then the 23 turn. All being rotors with 3 windings. Of course adjusting the brush timing, magnet type and gap between the spinning rotor and magnet, brush carbon softness will all affect rpm and torque, but for arguments sake and all things being equal the number of turns within the motor does not say if the motor is a slouch or rev master 🙂. Hope that makes sense
  11. Oh right, in the U.K. I asked to relocate to Ford Australia and was told no as they were pulling out manufacturing wise but that was 2013. I ended up in Ford Bridgend engine plant South Wales but now that’s also shutting this September. I tried to relocate to Ford Ohio in Feb this year then the covid19 pandemic hit 🙄. I’ve now decided to take redundancy from Ford. No more toolmaking for me.
  12. Another thing to consider is how old or new the magnets are. Magnets do deteriorate over time. The 550 size motors have a metal sleeve which slides over the outside. This keeps the magnets fresh for longer when the motor isn’t being used. Higher end motors do use different types of magnet which give a stronger magnetic field to help produce a higher performance motor.
  13. Well I fitted a small 2845 brushless motor in my locked diff Subaru Brat running a regular 7.2v battery to see if it was gutless and it was quite the opposite. The motor wasn’t expensive either so was even more impressive. Obviously the speed controller has to be changed to suit the motor.
  14. Black grasshoppers do look good, I did one with black wheels also. Are you fitting the driver figure or applying the sticker/decals? 🙂
  15. Magnets are the same, it’s down to wire gauge and number of turns.
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