What's your top speed?

[dogman dan]

The short answer is in my signature, but it needs updating. Running 120 volt controller now. Full details here, http://endless-sphere.com/forums/viewtopic.php?f=6&t=18644

 

[Timma2500]

Stock 1200w cyclone, 12s lipo:

64kph - flat road, no pedaling
69kph - flat road, no pedaling, slight tail wind.



Paul

 

[DrkAngel]

EZip Mountain Trailz:

Stock 24v SLA:
16mph w/pedal 18mph

Upgraded to 36v
23mph w/pedal 27mph

Regeared from 20T to 16T motor side freewheel:
20mph w/pedal 22mph
with 25.9v Li-ion
22mph w/pedal 25mph

36v & 16T:
27mph w/pedal 30+mph

Note:
Pedal assist past 22mph requires smaller then 14T highest speed gear - 11-34T 7spd available.

 

[Floont]

.
This morning, I finally exceeded 90 kph today on the flats, no wind, temperature 68F, and achieved a speed of 57MPH.

I attempted a second speed-run, but melted a 30amp connector on my 2nd acceleration.

Time for me to go into a soldering frenzy.

FA

 

[icecube57]

.
This morning, I finally exceeded 90 kph today on the flats, no wind, temperature 68F, and achieved a speed of 57MPH.

I attempted a second speed-run, but melted a 30amp connector on my 2nd acceleration.

Time for me to go into a soldering frenzy.

FA

Ive had those momments where I end up pedaling home. I try to space out my spurts to limit motor overheating. My controller has been right under the max threshold where any more voltage will push it thermally over the edge. I also replace my connectors every three months. Better safe than sorry. I dont have anywhere near the problems I had with the lower turn turn motors. Im currently limited by the current handling of my 9C 9x7. 66v is the best case senario for this motor right on the thermal threshold but decent speed. Im dumping anywhere between 3500w to 4500w into mine and try to back off around 2000w. I havent had a failed anderson or warm connectors. I guess the phase current is alot lower than when I had the 5303.

 

[DrkAngel]

EZip Trailz as oem - 16mph ... 18mph w/pedal assist
EZip Trailz w/16T - 20mph ... 23mph w/pedal assist
EZip Trailz @25.9v & 16T - 22mph ... 25mph w/pedal assist
EZip Trailz @36v - 23mph ... 26mph w/pedal assist
EZip Trailz @36v & 16T- 26mph ... 30+mph w/pedal assist

Yeah ... I tried a lot of upgrades, on various EZips.

 

[Floont]

...Ive had those moments where I end up pedaling home...

Fortunately, when I designed my power system, I put a lot of 50amp Anderson connections to/from each battery bank. I carry an Anderson 50 amp jumper with me just in case there is a battery fault. Today, I used it for the first time. My bike went from 132V to zero, then back to 72V after I jumpered past the burned-up battery pack connector. So... I got to cruise on back home at ~35MPH. Thank you jumper!

I'm dumping anywhere between 3500w to 4500w into mine and try to back off around 2000w. I haven't had a failed Anderson or warm connectors. I guess the phase current is a lot lower than when I had the 5303.

I calculated that my connector failed while I was pulling about 6KW through connectors that were never rated for such current.

FA

 

[torqueon]

MTB bike using an old 24 volt cordless ryobi lawnmower motor, 36 volt 20 amp headway's speed on flats 27 MPH, 19 MPH on 7 % grade. 1800 watts on take off, 1400 watts on hills, 800 watts at top speed on flats, Motor never gets hot. Me and the bike weigh in at 220 LBS
Wish I set this bike up for 48 volts !! Itching to use an RC motor.

Any tips for more power!

 

[Diamondback]

47 km/h on flat ground with moderately heavy pedal assist in 24th gear.

stock Ezee motor and 20A controller on 48V limited to 15A with a CA to get best range from the battery.

im sure if i set the limit at the 20A controller limit, it would be able to go faster, but 47km/h is fast enough for me....

Jason.

 

[Andje]

95 km/h is the fastest i've gone, thats with 24s3p lipo and an hs35 limited to 100v/65amps. Faster then that, your wheels better be super true and well balanced, the rpm's start savagely vibrating around that speed if they are just "well"trued.

 

[oldhaq]

78km/h on road, sannykung/9C 10x6 fast wind, 87v fully chgd 24s headway, 24" hookworm, slight tailwind, tucked in, 120% throttle

39km/h on mtb, gm 6x10 slow wind, 58v fully chgd 16s headway, 26x2.35" intense knobby, 120% throttle.

measured with satnav

New stat soon with new lipo and motor coming.

 

[Cold-E-Commuter]

On line with Dogmans 32mph on Aetoma kit and 48V Ping. Have hit 47.6mph per CA downhill drafting off schoolbus. Standard cruise of 26-28mph. New Hightekbikes 35A controller allows higher average than stock controller but pushes Ping a bit over 1C in windy conditions.

 

[Kingfish]

I just made the 40 mph Club on a single hub motor this evening; MaxS was 40.9 mph on flat level grade.
Motors and controllers are spanky-new for my cross-country journey.

Cheers, KF

 

[Pure]

Congrats KF!!

I'm topping out at 38 MPH with my current setup. I could break the big 40 if I didn't limit my amps...Dang X5s are amp hungry and low C LifePO4s just don't like that.

 

[yopappamon]

I just did 37.6mph on 25amps with my Lyen MAC motor and 18FET controller with 44.4v lipo. It was down hill with a bit of pedaling. :wink: If I tried I think I could get close to 40.

 

[floatingdog]

24 mph/38.5 kph, 48v SLA, 18 mph/29 kph 36v (3 Bosch Fatpacks).

Bafang BPM code 13, 6 fet sensorless Keywin controller, 26" MTB, w/Hookworms.

 

[ZOMGVTEK]

Somewhere in the 47.x MPH range...

 

[Doctorbass]

My current max top speed is acheived with my Giant DH comp.

http://www.evalbum.com/3406

I acheived 112kmh from now with 24s3 lipo.

I got my next battch of lipo today

Will add 6s3p for a total of 30s3p for 126V max

I hope to reach the 130kmh bar soon.

The giant is surprizingly stable and the handling at 100km/h is always perfect.

From 0 to 12Ah i can reach 100kmh (6.5kW continuous) at anytime.

And 100kmh continuous without any overheat ( the motor running 6500W continuous is very well air cooled and also running in a high efficiency rpm)

Doc

 

[e-ben]

Mine do 52km/h (32mph) without pedaling in flat terrain.

Nicolette, '91 Huffy Caribou with a 1000w 48v rear hub / 48v 20ah LIFE-PO4
Will get more speed when I'll replace the gearing, currently 50/14 on 26x175". Aiming for 56/11
Still refining her.

 

[Floont]

I was goofing off on my bicycle well after a summer thunderstorm here in Florida today.

I started at a dead-stop in a puddle and gave it WOT @ my 120% controller setting. It spun-up to 72MPH wheel-speed before the friction built up enough to lunge the bike forward. After hitting a dry patch the wheel-speed dropped to 42MPH, then back up to 62MPH in another wet patch (my actual speed was by then closer to 30MPH and accelerating). Not wanting to lose control, I backed off the throttle, leaned forward and opened it up again to a top speed of 56MPH against a slight headwind. Turned around and went home at a sensible 35MPH.

So, no speed record for me today, unless you count the wheel-speed spin-out in the puddle.

Man, that was fun!

FA

 

[cassschr1]

42 mph on the flats, tidalforce from oatnet, methods 100v/100a controller, 5305, 28s5p a123 pack. low 30's going up hill ( a 1 mile hill ) max about 14 hp lv of 88v x125a=11000/750=14.6 hp

 

[John in CR]

For a bit of perspective Sam Whittingham hit 82.8mph on a flat road, and Fred Rompelberg hit 167mph on a flat road drafting a motorized vehicle. Both were with only a human motor. http://en.wikipedia.org/wiki/Cycling_records

 

[Floont]

For a bit of perspective Sam Whittingham hit 82.8mph on a flat road, and Fred Rompelberg hit 167mph on a flat road drafting a motorized vehicle. Both were with only a human motor. http://en.wikipedia.org/wiki/Cycling_records

Not to belittle these great achievements, but for more perspective, Sam Whittingham hit his record in a custom aerodynamic shelled recumbent bicycle and given what they call a "flying start" through a 100 meter flat course to attain his record.

Fred Rompelberg was drafting a dragster on the Bonneville Salt Flats in Utah. Still an impressive accomplishment, but he had to overcome friction losses, mechanical drag, and rolling resistance... no air drag which significantly dominates our maximum speeds. Plus he was towed to a high speed before the record was made. What is really impressive about his record is he was over 50 years old when he attained his special record attained in 1995 and it still stands to this day.

FA