lostrack wrote:I tell you what guys...
DON'T STAND UP!
the reason you can't use a fast pickup motor for mountainbiking at the moment, is the power is so instant, you can't stand up while riding it.
I tried it on my 3220 RC setup (dialled down to 160 amps) and it threw all my weight to the back, which then made me turn the throttle more (think : the angle of your hand on the grip!). It's a real struggle NOT to flip over. Brakes VS motor are pretty well matched, so you need real control to keep it on track.
The only way I found to do this, was to sit down on the saddle - and who does this when riding a MTB on a downhill course?
I have a speed throttle which is rediculously twitchy. The RC CA setup may help
Kepler wrote:So How does a torque throttle actually control torque? Our do you mean Current throttle?
recumpence wrote:I have built some seriously fast bikes myself. My yellow trike in twin motor guise ran 0 to 70 in 4 seconds consistantly (as long as I was on fresh pavement for decent hook). It has a voltage based throttle. Yet, it was docile to drive if care was taken. I have no problem with voltage based throttles. I think much of the difficulty is the componentry used in the throttle.
One thing I do not like about current based throttles is the amount of throttle jockeying required to maintain speed in varying gradients. I live in a hilly area. I love approaching a hill at a given throttle and watching the bike maintain constant speed up the hill without added input. A current based throttle requires additional input (alot of input) to maintain speed up a hill. Of course, that is preference, however. A current based throttle maintains a constant draw which should be a bit better for longer range. So, they do have their merrits. I just want people to know voltage based throttles are not inferior, just different and, if setup properly (and controller setup properly), they are docile too.
recumpence wrote:Actually it was 70mph (110kph).
I would pedal twice to get the trike rolling and nail the throttle.
You are correct about hand position while standing off road. That is a good point.
toolman2 wrote:0 to 110kph in 4 seconds is incredibly quick (do link us up with the info if you could recumpence, i missed that too) but yes lostrack that is well spotted, you cant really whiskey throttle a recumbent or a car, as you dont tend fall back and add more..
when, like you say you can just nail the throttle after 2 pedals, and 4 seconds later your merrily doing 110kph, then its clear you are not suffering from the affliction.
-good point also with the thumb throttle, they do seem to help.
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