Anybody with hubs getting power wheelies?
- Thread starter swbluto
- Start date
Hyena
10 GW
Yeah my Norco does pretty good wheelies
Modded GM 1000w 26" rear hub (upgraded phase wires to 12ga and aircooled), 18S zippy lipo (75v off the charge, stays over 70v for most of the discharge), 60a controller (~4500w peak)
You'll pull wheelies with less power with heavier batteries on a rear rack though.
Modded GM 1000w 26" rear hub (upgraded phase wires to 12ga and aircooled), 18S zippy lipo (75v off the charge, stays over 70v for most of the discharge), 60a controller (~4500w peak)
You'll pull wheelies with less power with heavier batteries on a rear rack though.
Geebee
1 kW
I try to avoid them but to much throttle when rolling along and not leaning forward will start to lift the front wheel, which I promptly stop by leaning way forward, it will even do it on a slight down hill.
The bike would be lethal without the soft start throttle and a gentle hand at take off as the batteries are on the rear rack
YXM zone, 1000w motor and 48v 20 ah batteries, the motor is a GM or clone I think and happily sucks down ~2kw since replacing the melting battery connector and some wiring.
The bike would be lethal without the soft start throttle and a gentle hand at take off as the batteries are on the rear rack
YXM zone, 1000w motor and 48v 20 ah batteries, the motor is a GM or clone I think and happily sucks down ~2kw since replacing the melting battery connector and some wiring.
dogman dan
1 PW
One of my builds was a wheelie bike, but more from the battery placement than anything else. 24 inch 5304 and nicads on a rear rack. It didn't take much throttle to lift the wheel, it was already skimming along to begin with.
My bike used to wheelie like crazy when all the batts were on the back deck. But the weight from the SLAs started bending my seat post, even with it as low as it goes, touching the frame...
It was a hassle going up any sort of incline, and could get dangerous with a twist throttle and high current limit.
It was a hassle going up any sort of incline, and could get dangerous with a twist throttle and high current limit.
oldhaq
100 W
On an earlier temporary build I had a chopped beach cruiser style with high bars, 10kg LFP4 battery under front of frame (35kg total), with a 26" GM 1000w hi torq version powered by a shunt modded 6 fet GM magic (pie) controller (RIP) putting out over 90A peak @ 48v. It had heaps of grunt, there weren't many cars that were quicker off the mark, and with the right weight distribution I could ride the rear wheel for 5-10 yds. I still have the bike, it's just waiting for a battery to go with it but I want to run it with a 20" rim and better controller now.
joe tomten
100 W
My bmx with a geared hub - say 300 watts - did wheelies all day long with the 48v15ah ping on the back rack. I've moved the batt. to a front basket and it's so much more managable.
Now it is my winter bike with the studded schwalbes on it. Freaking great low power high torque single speed fun.
Now it is my winter bike with the studded schwalbes on it. Freaking great low power high torque single speed fun.
joeworrall
100 mW
1000w 48v yxm motor, 48v10ah lifepo4 battery, 26" wheel and can sustain a wheelie for as long as the road is straight and im not drunk
liveforphysics
100 TW
Dual HTX motors.
Wheelies effortlessly, even when leaning hard over the bars.
*EDIT* I didn't notice you said frock-motors only. lol
Wheelies effortlessly, even when leaning hard over the bars.
*EDIT* I didn't notice you said frock-motors only. lol
John in CR
100 TW
liveforphysics said:
If we manage to pump 30kw through one of my hubbies will it still be a frock motor?
Another one which has some kind of mechanical electric shifting mechanism, I plan to put on a grinder aided weight loss program to get it below 20lbs. It will then become a 7" diameter sealed outrunner with a cast iron bell housing.
I'm pretty confident that once ventilated it will accept the 300 amp peaks. Will it still be a "frock motor" even though it's mounted on the swing arm but outside of the wheel? ie can a frock motor be modded to become a real motor. 
On topic, since I used to do power wheelies with kid leg power, I'm sure any frock motor will power wheelie with the appropriate setup. I for one will always attempt to design them out of my bikes for maximum acceleration, not to mention I'd probably wipe out anyway.
John
Hyena
10 GW
According to AussieJester you're still wearing a skirt, but there'll be a big set of balls under there!John in CR said:
I'm going to coin a new phrase and call them kilt motors* :lol:
*or tranny motors...
Ok, thanks for the input. I was hoping for more "power wheelies" than "weight wheelies", but all is good.
My main motivation is to find what kind of wheel torque is necessary to wheelie on a "normal bike" (With the batts, say, in the frame). From hyena's response, it looks like something in the 125-130 NM range on a 26 inch wheel would do.
My main motivation is to find what kind of wheel torque is necessary to wheelie on a "normal bike" (With the batts, say, in the frame). From hyena's response, it looks like something in the 125-130 NM range on a 26 inch wheel would do.
liveforphysics
100 TW
swbluto said:
If you can estimate the center of gravity location relative to the rear wheel, it's extremely easy to calculate the acceleration rate that will cause a wheelie.
It's going to vary wildly from bike to bike. From just leaning back in the seat and flipping over without hitting the throttle, to needing a 30kw setup to lift the tire an inch.
