Rocky Mountain ETSX70 Conversion

vodka

vodka

100 W
Joined
Oct 22, 2009
Messages
121
yU8sAhK.jpeg


Just want to share my new build. It's not complete yet, but ill keep you posted. Big shout out to justin_le https://endless-sphere.com/forums/memberlist.php?mode=viewprofile&u=678 for developing this fabulous controller!

its hard to find decent 26" 36h rims, i went for these https://www.velocityusa.com/product/rims/blunt-35-559

Battery is a 52V 17.5Ah 14s5p with Sanyo NCR18650GA cells
 
the adjustable torque ramp up rate for regen on the phaserunner is a life saver on bikes with small drop outs like yours. whats the motor?
 
goatman said:
the adjustable torque ramp up rate for regen on the phaserunner is a life saver on bikes with small drop outs like yours. whats the motor?
Click to expand...
torque arm is up next, ill have to laser cut that one before i can use regen. motor is a 9continent RH212_Std from ebike.ca
 
ES member sells these
https://endless-sphere.com/forums/viewtopic.php?f=31&t=69073&start=100
 
goatman said:
ES member sells these
https://endless-sphere.com/forums/viewtopic.php?f=31&t=69073&start=100
Click to expand...

thanks but i will design my own, I need them on both sides.
 
Torque arm design
HKT8EzM.jpeg
 
Thank you, your downhill monster looks good as well. Yes the frame is aluminum, it's quite hard to find a decent frame these days, all these modern bikes have stupid low upper tubes where batteries wont fit. From time to time I'm having a look on the second hand market for good frames. I hope they get my stainless steel torque arms laser cuted this week so i can actually do a proper test run.
 
torque arms accomplished
pdR6rSOl.jpg
 
I recently had the pleasure of a battery fire that almost destroyed my bike. Fortunately, the battery came off the bike and I was able to pull the frame away. However, my Cycle Analyser got badly burned. The reason for this was the cheap BMS that was built into the Battery Pack, it probably shortened one Cell which created a runaway effect and the whole pack melted like Lava.

IMG_20230320_163223.jpg


So to hopefully avoid this in future I'm going for a JK-BMS with active balancing, first impressions are good so far, will keep you posted.

IMG_20230320_163347.jpg
 
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