Search results

  1. M

    Flux Performance - eMX startup from Europe

    My recommendation would be to wait for the next breakthrough in commercially available battery cells that exceed the latest Li-Ion technology in safety, thermal, power and capacity density. Otherwise, you'll suffer the same limitations that plague the Alta, making an already small market...
  2. M

    An Evening With The Champions - Opportunity To Promote E-Bikes

    To clarify, I believe that a well built pack based on high quality Li-Ion cells will be reasonably safe. However, "well built" means different things to different people. Industry standards are still in infant stages and governmental regulations (other than for transportation) seem to be...
  3. M

    An Evening With The Champions - Opportunity To Promote E-Bikes

    I don't know how much money Tesla has (and for that matter, Alta had) for lawsuits related to battery fires. It's bound to happen, sooner or later, regardless of how many failsafe's are incorporated. In my opinion, that's the biggest liability impeding anyone from entering the market using...
  4. M

    A little bit about my 2008 YZ250F Electric Conversion

    We gotta do a battle of the electric pit bikes! My KTM 85 Supermini is probably as fast as my Alta but it's so short I can't keep the front end down, lol. It's as light as I can build it and it's still heavy, 125cc bike heavy. But then again, other than the wheels and frame it's got full size...
  5. M

    Sold 2018 Redshift MXR for sale

    I'm trying to buy the bike to do exactly that...... so, sorry anyone else would be "on their own" pack wise.
  6. M

    Code 33 multitool

    An order of magnitude too low....
  7. M

    My Output Shaft Snapped.

    All any FEA analysis software can do is use the user selected standard material properties in it's database or some other custom user defined material properties, it can't determine the best choice on it's own (I wish). I just used structural steel in my analysis. Although all the properties...
  8. M

    My Output Shaft Snapped.

    It's possible. However, this is the view I was looking at. If there's a chamfer or radius it's pretty small.
  9. M

    My Output Shaft Snapped.

    Well, just based on a quick analysis using ANSYS, putting a radius as I showed reduces local stress by about 20%. Using the fatigue tool in ANSYS the same mod increases the safety factor of the entire shaft by about the same. I'm not saying these are absolute numbers as I don't have the exact...
  10. M

    My Output Shaft Snapped.

    This is the simple mod I'd do. A very small ball end Dremel tool/stone and a lathe (or something to spin the shift while cutting/grinding) followed by some polishing. Not reducing the shaft diameter, just getting rid of the sharp shoulder (stress riser). No heat treatment necessary. If that...
  11. M

    My Output Shaft Snapped.

    Wow! Cracked at the weakest point, the o-ring slot. That square slot is a perfect stress riser. Probably should have machined a slot with much bigger corner radius to reduce the stress concentration. When you get a new shaft you'd be advised to carefully radius those corners with a dremel...
  12. M

    Top end

    If the forks were assembled properly when the spring conversion occurred, they should have set the correct amount of preload, say 10mm. Assuming that, the only way you'd have that much free (unsprung) travel is if the forks were not assembled correctly after changing the seals. If they were...
  13. M

    Weird noise/roughness at low power??

    I've seen two different parts used to date. One was a sealed ball type and the other an open roller. If you have a roller type the bearing should come as two separate parts, the outer race with the rollers and the inner race which goes over the motor output shaft. If its the ball type it'll...
  14. M

    Alta not turning on

    I'm in Corona. Bring the bike by and we'll check it out. Text me 6027520083.
  15. M

    Weird noise/roughness at low power??

    I have had to replace the right side motor bearing on two Altas who's owners complained of exactly that sound. However, this was above and beyond the "normal, for an Alta" type sound. If the bike's new to you the only way to check is to pull the right side motor cover and using your hand, try...
  16. M

    BCU board needed ?

    Hummmmm... not sure I understand. Are you saying; 1) The Bootloaders for all the main boards are publicly available now (except ACM)? 2) All the main boards (except ACM) at Liquid have the bootloaders installed? 3) Some combination of the above? If so, I don't think I've ever seen that stated...
  17. M

    BCU board needed ?

    I wonder why the BCUs got loaded and none of the other electronics did . . . . . (ie DCCPs, ACMs, etc). Good if you need a BCU, however. At least until they're all gone.
  18. M

    BCU board needed ?

    Make sure to ask Liquid if the CAN Bootloaders are all installed before you buy. Otherwise, it'll be an expensive paperweight.
  19. M

    A new E-Motocross bike with clutch & gears?.

    That's not a Honda! It's a Chinese replica, and not even a good one at that. KTM copy plastic, china suspension, who knows what else they copied. I think 230 lbs is about 30-40 lbs optimistic too. But they're trying . . . . . more than I can say for Japan and Europe. I suspect the Yamaha...
  20. M

    Catanzaro Got his Alta!

    He hasn't gone fast/long enough to thermal out yet, lol. But he will!
Top Bottom