FINALLLYYY I can post on this forum! I have always wanted to contribute to this forum since I had found it! Anyways, a month ago I traded my Redline Cyclocross bike for a Norco A-line 2005 DH bike on craigslist in hope of using a Denzel 3000 watts BLDC motor as a mid-drive in conjunction with a cyclone planetary gearhead and the bottom bracket extender as well as the freewheel assembly. This resulted in (No offense to Cyclone) Horrible mount so I decided to weld up a more sturdy one out of 1/2 and 1/4 steel plate. With the flexing problem gone I then moving to mounting batteries onto the bike which proved to be much harder than it seemed as the Norco has no triangle frame and the geometry is quite weird. I used LG IMR cells from the infamous "hoverboard batteries" Since the size of the packs didn't work out to well for my enclosure I borrowed spot welder from my dads work and make up a 10s 8p 18650 pack using the included BMS and nickel plated strip from Aliexpress 8x.2mm (its overkill but it the shipping was fast) from the packs only as a cut off for charging in parallel. the discharge is completely isolated from the BMS as the kelly controller has overcurrent. The aux power for the controller is provided through the two same BMS in series so when one BMS cuts off the controller will as well. For the mounting solution I bought cast aluminum clamps I then enclosed the batteries in two Pelican cases I got for Christmas the 1170 are sure, not cheap but they are sure solid and will last many projects to come. I did have to drill a hole for the cable gland and the mounting points though... I am trying the CAD up a holder for a key switch and the wireless current shunt I have for SOC, current and voltage Anyways I hope you guys like it as much as I do ! Any comments or concerns are appreciated the bike is insanely fast as it is I almost never change from the 6th gear on my 9-speed cassette.
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Looks great. For me being 6'4" tall I'm not sure I'd ever fit with the batteries there. When I built my Giant DH Team I put lipo in a Pelican case on the front forks and I can tell you that 24s lipo at 20 amps sux on the forks. I think your way will ride way better.
Thank you, I thought it would be awkward too but since the extended bottom bracket is present it makes the experience much more manageable for you to pedal as well though I'm not sure if I even will that often aside from being out of battery.