Not sure how can it be so hard to install. Really, there is nothing to it, everything fit perfect on my kit... Now if you don't have the tools to do the install then I can see why it would be a nightmare. Cleaning threads and making sure all your main support bolts are loctited is key here. I sent Eric a 3D cad diagram on how to update the motor mounts without needing to spend money on things like LR or anything like that. All you need is washers. I'll put the CAD diagrams tonight when I get home...
To install all I did was took old BB apart, which could be a nightmare if you don't have the tools, or its seized... etc, then line up the motor plates BB holes (with motor already bolted to the plates) put BB, tighten to stun and the motor is already in place. Use an ISIS BB, seriously!! this is HUGE, people don't understand that Mid-Drives HATE FLEX!! any FLEX, and the square taper BBs have a lot of play in the bearings, which translates in throwing chains. When I upgraded to an ISIS BB with a Cyclone 3 chainring crank it made my crapo GNG kit not throw chains anymore... so the difference in BB's is huge. The splined ISIS BB doesn't allow for a single bit of play on the crank so there, I said it. Also make sure the BB flanges holding the plates are tightened to stun... seriously this is also VERY IMPORTANT: the motor shouldn't fall on its own weight when the hose clamp is not attached... in fact the motor should be impossible to move with "forceful hands" while just held by the BB holding flanges; again this is key.
As for power, not sure what to say, but the kit is going to be snappy on the throttle no matter what: you're taking 2000+ watts on 12S and 3000+ on 72Vl; heck I even said it on my quick write up: with a 36T-32T (cassette/crank) is an instant flip if you punch the throttle for more than a fraction of a second. Now, the throttle I got is actually really smooth; again, at least the one I got... maybe not all throttles are the same. The one I have is branded ORO, silvery looking... smoothest of all throttles I've tried, and I've tried 8 of these already... the GNG was the worst offender... it shattered the piss out of the drivetrain with just a hint of giving it throttle... not the case of the one I got.
I am also running mine on 12S lipo, not on 72V or anything insane beyond that, so I am not sure how well it would fare at 72V; but truth is that this kit is already stupid fast on 48V, so I can't imagine at 72... and running this kit at 72V IMO is pointless, at that point one might as well just buy a dirt motorbike...
I am not super-experienced but this is my 3rd ebike build...
-I've built a Gen2 GNG mid drive and that was a real nightmare; 3+ days of work to get it just to work without throwing chains, had to modify everything on it; agian, threw chains left-right, flexed like a cheap can, throttle was insta-snap... etc... everything ended up breaking on the kit, the BB, the crank freewheel, motor shaft, planetary clutch, ... its now sitting as paperweight on my garage.
-Then I've built one of those 24V generic mid drives with brushed motors on eBay, has much less flex, overall was a much faster install took me 3 hours to install and it worked right out of the box, no chain throwing... smooth, smooth throttle... etc... is not as powerful as mine but now I have it running on 48V and my son has clocked 100 miles on it without much of a hitch... albeit occasionally has thrown a chain here or there...
-After I got feed up with GNG turd, I got the Cyclone kit from Luna Cycle after really eyeing the BBSHD... but losing the 3-chainrings for me was a big NO-NO; so I took a leap of faith and ordered the Cyclone, to my amazement it went in without a hitch in about 4 hours (not counting clean-up and removal of the old crap) Everything lined up... things just worked.... not sure how to explain it.
G.
Tyler durden said:
@gman1971
i think that write up might have changed my mind from the BBSHD too. I am particularly taken by your saying it was a simple install. I have emailed the guys at Lunacycle and was told
"The cyclone is an advanced build with no instructions or support"
and
It’s cheaper because it is. It’s an extremely powerful and inexpensive kit. It has baffled and stumped experienced builders. I just chatted last night with a veteran builder that post on Facebook having spent the entire day getting it setup right. Only to discover the throttle was extremely jumpy with all the power.
He like it, but found it difficult.
I really strongly encourage some more research. We even go so far as to post a warning on the sale page. We’re more than happy to sell them. Don’t get me wrong, they are a barrel of laughs.
The Cyclone is a fast beast. It’s illegal on the road in most municipalities, it’s extremely powerful and tends to jump out on the throttle. Where as the Bafang is very civilized. Cyclone bare bones power, Bafang powerful and smooth.
Hope that helps!
You're experience seems totally different from these warning!?
This will be my first ebike and I am hoping to do it myself. A simple to follow install guide would be superb if you can manage one!