gwhy!1
100 kW
zombiess said:Every CVT I've had experience with has some mushyness.
Your not wrong, I have ridden some scooters with very bad cvt's but I have also ridden scooters with very good cvts so it very much depends on the setup.
zombiess said:Every CVT I've had experience with has some mushyness.
A slipping clutch is nothing more than wasted power, 100% slip = 0 power to the tires, there is no gearing, not even effective gearing, just waste, like a drive shaft connected to nothing, no work can be performed. Applying more clutch force simply adjusts the amount of power applied to the drive train (all 1 gear of it). There is no multiplication going on in a clutch system, no gears.
The Kinetic energy in the crank and clutch is lost in >1 second when the rider lets the clutch out! And no were near 100hp!motomoto said:I am being sacastic. It is probably over 100 horsepower at the rear wheel when a top rider leaves the gate. It's not going the happen with an electric with one speed and no kinetic energy to draw from.
Arlo1 said:The Kinetic energy in the crank and clutch is lost in >1 second when the rider lets the clutch out! And no were near 100hp!
You are so so SO wrong on so many levels my friend!motomoto said:I kind of get tired of hearing the term "full torque". It means nothing unless it can get things spinning quickly enough to produce the desired result. I think
the only thing that is going to get a tire spinning quickly enough to launch a race bike properly is a whole lot of stored inertia released upon the drive system
suddenly and violently. Trying to get that out of an electric motor would just produce a shower of sparks.
motomoto said:I kind of get tired of hearing the term "full torque". It means nothing unless it can get things spinning quickly enough to produce the desired result. I think
the only thing that is going to get a tire spinning quickly enough to launch a race bike properly is a whole lot of stored inertia released upon the drive system
suddenly and violently. Trying to get that out of an electric motor would just produce a shower of sparks.
motomoto said:Trying to get that out of an electric motor would just produce a shower of sparks.
The new Zeros are just being shipped and BRD is planed for this year as well we will see in the next 1-2 years electrics getting hotshots like you have never seen against ICE powered bikes for the first time in history!
motomoto said:Arlo1 wrote:
The new Zeros are just being shipped and BRD is planed for this year as well we will see in the next 1-2 years electrics getting hotshots like you have never seen against ICE powered bikes for the first time in history!
I have been emailing with Marc at BRD. He says the ICE bikes get the jump on the electric at the start because the clutch hand is quicker than the throttle hand. I can see that. When the throttle
is turned, if there is any hesitation in the circuitry, you are going to get beat at the start. He says they are trying to work it out with programming, but as a last resort, are considering a clutch even though it would add a few pounds.
I sure would like to see some video on how the BRD bike puts 5 seconds a lap on a KTM 250 like they claim. All I have seen are lame videos of all the electric mx bikes. The new Zero
videos are the best. I want the electric bikes to beat the gas bikes, that's why I mention my ideas and will implement them in my build.
When you are almost at shift rpm (on a mx track not pavement) you start pulling on the shift lever and any little bump in the dirt will allow enough time for the transition to the next gear with no clutch and WOT! When I learnt this was in a 6 hour 3 person team endurance race with a women on our team and we won!liveforphysics said:[ I personally tend to chop throttle a minimum to shift out of respect for the poor little dog edge/corners in a tranny even when I'm trying to shift quickly.
liveforphysics said:... yet it makes it more efficiently with less moving parts and slower moving parts and less system complexity, at a very real system penalty of weighing at least >15lbs more in drivetrain wight than the RC motor setup. Both are going to end up with similar final efficiencies when riding around doing normal ebike stuff, just one weighs 15lbs more,... But it is a heavier way to do it, so if weight is really the absolute key critical factor, the RC motor bike is going to be lighter and hence better for that particular application where weight is so critical. For all other applications, give me another 15lbs on the bike please, and a super-size dish of the reliability and silence that comes from big slow moving full-size-motorcycle drivetrain size parts applied to a bicycle.
.... for the guys who aren't just trying to average 500w to get around...
http://www.endless-sphere.com/forums/viewtopic.php?p=709801#p709801Ken Taylor said:Maybe two speed epicyclic hub motors would be good?
Miles said:http://www.endless-sphere.com/forums/viewtopic.php?p=709801#p709801Ken Taylor said:Maybe two speed epicyclic hub motors would be good?
It seems like a good approach though so I wonder why you can't buy one?
You can:Ken Taylor said:It seems like a good approach though so I wonder why you can't buy one?