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  1. Tuner

    Lowering the suspension AER 48

    We shall agree to disagree regarding the "Weeble" analogy.
  2. Tuner

    Lowering the suspension AER 48

    Again, we disagree, as in my opinion and experience, a CG that is close to the contact patch certainly does impact stability (including dirt bikes), both in theory and practice, and without direct regard to tire cross section. Study closely the dynamic of countersteering regarding a single track...
  3. Tuner

    Lowering the suspension AER 48

    You sir, are correct.
  4. Tuner

    Lowering the suspension AER 48

    I respectfully disagree. The "Weeble" has it's CG near it's contact patch. As a result, the "Weeble" will indeed "wobble", though it will not "fall down". If one were to place the motorcycles CG nearer it's contact patch, it too would wobble, though not fall down. Unfortunately, this would...
  5. Tuner

    Lowering the suspension AER 48

    The pencil weighted end down has the CG near the contact patch. Weighted end up moves the CG away from the contact patch. Forces acting through the weight are increased as a result of the increased lever ratio. During a turn gravity wants to lean the bike inward while centrifugal forces attempt...
  6. Tuner

    Lowering the suspension AER 48

    In a word, Leverage. Place a weight on the end of a pencil. Now place the pencil weighted end down. Note that the pencil wants to stand vertical. Now place the non weighted end down. Unless perfectly balanced, the pencil now wants to tip. Remember.... " Weebles Wobble But They Don't Fall Down "
  7. Tuner

    Lowering the suspension AER 48

    Absolutely! As a rider you are part of the dynamic CG equation. Shorter rider = lower CG. Perception is objective. Physics is physics. That said, one man / woman's utopia is another's Hell. Such is what makes chassis / suspension tuning a challenging, yet rewarding venture.
  8. Tuner

    Lowering the suspension AER 48

    Confidence is paramount. Oftentimes being able to touch the ground flat footed makes all the difference in the world. With exception of Flat Track specific applications, suspension lowering is most often implemented to enhance rider confidence via being able to easily touch the ground. That...
  9. Tuner

    Lowering the suspension AER 48

    Lowering the motorcycle will lower the CG which will increase the steering effort for a given turn radius / lean angle.
  10. Tuner

    Rim Shattered

    Standard rims (including those used by Warp9) are often of 7010 Aluminum. Performance rims (including the Warp9 Elite series) are of 7050 or 7075 Aluminum which is considerably more durable than the 7010 Aluminum. That said, we never had a rim "explode", though we did see broken spokes, bent...
  11. Tuner

    0-60 mph time?

    Lowered SM @ Infineon Raceway. 2017
  12. Tuner

    Alta refugees

    GPS variable offset triple clamps and early KTM Duke, non leading axle forks.
  13. Tuner

    Alta refugees

    The #30 bike ridden by Alan Birtwhistle was simply a lowered Alta MXR with a 19" front wheel. Said bike was returned to MX duty.
  14. Tuner

    Alta refugees

  15. Tuner

    Honda CR-E vs. Alta Redshift

    I should point out that my opinions are primarily based on testing. Often times what made sense in theory failed to apply. It took me the better part of two years with Alta to truly get a handle on how to properly setup and tune our particular electric off-road motorcycle. That said, I was...
  16. Tuner

    Honda CR-E vs. Alta Redshift

    It's not that simple. Track conditions, rider preference, rider style, and a host of other variables, including steering geometry and suspension settings all influence what is the "best" setting for the day. This particular day of testing was with Darryn Durham and it was wet. We did numerous...
  17. Tuner

    Honda CR-E vs. Alta Redshift

    The above statement in bold is not 100% accurate. "Huge Swings In Traction" is indeed a stumbling block regarding the Alta. The lack of rotating mass as compared to that of a gas motorcycle is often cause for huge traction swings in less than perfect traction conditions (aka off-road). These...
  18. Tuner

    Honda CR-E vs. Alta Redshift

    Low and centralized mass encourages the front and rear wheels to rotate around the mass center prompting the for and aft rocking. Most off-road motorcycles are rear weight biased, where the Alta is near neutral, particularly while standing on the pegs. "Lack of significant rotating motor mass...
  19. Tuner

    Honda CR-E vs. Alta Redshift

    Most MX / SX motorcycles feature roughly a 60 RR / 40 FT weight bias. The long wheel base also encourages pitching though that is something that most modern single shock chassis's must also contend with. Long, tall with low centralized mass = a rocking couple.
  20. Tuner

    How-To : Install and Use Alta Multitool Software

    We never encouraged people to disconnect the pump during charging and / or troubleshooting out of concern that they would forget to reconnect it. That said and short of forgetting, you will not harm anything.
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