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JamesJT

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Everything posted by JamesJT

  1. JamesJT
    Here is my RC Grinnall Scorpion III. It has direct drive from one buggy motor. I wanted to film outside and get up to full speed but this thing takes off by itself when the sun comes out. http://rebrickable.com/mocs/JamesJT/rc-grinnall-scorpion-iii
  2. JamesJT
    Built-in LiPo and "ludicrous" mode?
  3. JamesJT
    Cute, clever and blue. Great driving too. I guess it would just fall over if you made it any quicker.
  4. JamesJT
    Great MOC, really well done. I can't see the mechanisms because everything is black.
  5. JamesJT
    I made the Lotus 7 http://www.eurobricks.com/forum/index.php?showtopic=138614#entry2630908 I also made a RC "tracked racer" the week before. http://www.eurobricks.com/forum/index.php?showtopic=138171#entry2623699
  6. JamesJT
    If it is tracked, like a ripsaw, it will be "skid-steer" so won't need a servo.
  7. JamesJT
    Sorry, I though 8145 should come with 4x 75535 silver exhaust tips but I just checked peeron and it has ribbed hose like the one on ebay. It probably is real and I have no way to tell if 8145 is real.
  8. JamesJT
    I can't find any pictures on google of a "tracked racer", maybe its a ripsaw. Maybe the set is "track racer" instead.
  9. JamesJT
    I can tell its a fake, wonder if the buyer will. http://www.ebay.co.uk/itm/Lego-8145-Ferrari-599-Fiorano-/391522856815?hash=item5b2894af6f:g:RdUAAOSwJqpXoOpb
  10. JamesJT
    Why wait? That part is available now on lego bricks & pieces for £0.32 Almost all the new parts from the 2016 sets are there too. Wheels and tyres from claas are not availavle yet.
  11. JamesJT
    I added the LXF to the OP.
  12. JamesJT
    I will add a LXF later today. Blue is not rare in my house. I didn't even have to pinch parts off my Rebrick Porsche. Credit where credits due, Have a look at Anto's Fiesta. http://www.eurobricks.com/forum/index.php?showtopic=136796
  13. JamesJT
    Thank you all for the comments. I had a blast building and testing this. After many attempts, this turned out to be the strongest version; RC Train motor coupling by James Tillson, on Flickr It has a 12L axel, 2 axel and 16L axel to couple all 4 outputs together but I needed the clever steering of Antos Fiesta to make it work without a diff. It is also an odd number of studs wide which is better for studless technic models. The Lotus only happened because I finished the Caterham and realized I hadn't used the 18944 panel. I could have got closer but I didn't want to add weight. Using the blue11954 curved panels as part of the chassis meant I could remove 6 beams but it also meant I couldn't have them taper in toward to nose. I would have liked to put the IR receiver a bit lower too.
  14. JamesJT
    I made a RC Caterham and a Lotus 7 version using 2 RC train motors. I borrowed a steering design by Anto (from his Ken Block Fiesta) that makes the car lift its inside rear wheel when cornering. It means the car can do without a differential and produce roll induced oversteer. The Lotus has narrower front and rear axels. Caterham.lxf
  15. JamesJT
    I first used your steering so I could do without a diff, it picks up the inside rear wheel when cornering so the diff wasn't needed. Now I find I can now get (roll induced) oversteer with the low torque RC train motor. Thank you again. RCT Car V7 by James Tillson, on Flickr
  16. JamesJT
    Both those entries have the "Top 20 congratulations" message.
  17. JamesJT
    Well done jorgeopesi! I'm in the top 20 too. There is a message on my entry. I'm going to have a flick through my favorites to see which ones made it.
  18. JamesJT
    I'm using your steering on one of My MOCs. It works really well. Cheers RCT car V7 (Anto steering) by James Tillson, on Flickr
  19. JamesJT
    So another day playing with train motors. Here is L motor vs RC train motor in version 1. train vs L by James Tillson, on Flickr Skip a few generations (videos are on flickr) and I have something faster than 2x L-Motor (gear up x3). RCT Car V4 by James Tillson, on Flickr
  20. JamesJT
    LXF for bother versions are available. Send me a PM. Mini version works well with AAA and IR V1. This mod has more torque but the thermal protection cuts in too often. I need a BuWizz. FastTrack.lxf FastTrack Mini.lxf
  21. JamesJT
    I could only find 2 RC MOCs with train motors when I started this project, maybe now there will be more. The carpet test was how I knew I'd built it strong enough. If you listen at 0:55 you can hear the thermal protection "squeek" as it spins on the carpet. Tarmac would destroy the treads. I went out and tried it on the grass; it was rubbish. It could just about go down hill but couldn't spin or go up hill. It would be great on ice!
  22. JamesJT
    No ideas of its top speed as I don't have an area big enough to time it. I'm not sure what rpm the motors are doing. I tried gearing up but they have so little torque, they work best with direct drive. I'm pretty sure that 1 LiPo can't run all 4 motors at full speed at the same time. I really want to see what it can do with a BuWizz. Thank you. I made another 3 versions this morning that weren't as good but I put together all the best bits and it all just worked. I will make an LXF tomorrow. Yes, just enough fury. It is possible to drive this one and stay in camera shot. I had to add weight to the mini one to stop it flipping over. Now I want to try mini version on a ramp! A car is next but only if I can make it faster than the same model would be with 2x L-motor.
  23. JamesJT
    I have been experimenting with RC train motors to make something fast and fun (but not exactly cheap). It uses 4x RC train motor, a IR V2 and a LiPo.
  24. JamesJT
    I hope everybody has a go. This is fun! V3 and its back to 2 motors. I extended the wheel base from V1 but it was only 2 wheel drive and would not turn properly on carpet. FT 001 by James Tillson, on Flickr It went much better when I saw an easy way to make it 4wd again. http://www.youtube.com/watch?v=DDl7RROh8Ow I think I prefer V2 as it was easier to control.
  25. JamesJT
    I had to scrap the suspension for now as the tracks kept falling off. I tried all combinations and IR V2 with 2 motors per channel was by far the best. The thermal protection cuts in if I spin too long. It was no fun at all when I swapped the LiPo for AAA box. http://www.youtube.com/watch?v=cFSxrScXnp4&feature=youtu.be It is slower but easier to drive, I have lost the "fury" so V3 will be back to just 2 motors (was it that obvious Max?). I think the key to making this work will be finding the perfect wheelbase, track and contact patch.
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