Specialized Enduro 2014 Cyclone 3000 build

[MarkLeeds]

Hi All,

Just wanted to contribute something with a few words and pictures of my cyclone 3000w/ specialized enduro 2014 build. Thanks to everyone for their forum contributions and ideas - I'm definitely standing on the shoulders of giants.

I have a ktm 2 stroke enduro motorcycle which I love to ride but hate spending money on, repairing and hauling across the country to designated riding areas. I thought a combination of the cyclone kit and a decent enduro mtb might give me many of the benefits of ktm ownership with fewer headaches. It's far exceeded my expectations and I'm extremely happy with how it turned out.

Just some thoughts (in no particular order).

The bike handles quite nicely, I tried to centralise the extra weight and the mid drive nature helps with this (i think) .
It's a wheelie monster, much closer to my ktm than a shop bought ebike.
Additional weight of the battery and motor is about 10kg.
The battery does not get in the way while riding.
I went with an enduro rather than downhill bike as enduro geometry is designed for all terrain not just downhill
I used inkscape to design the battery case and motor mount which were laser cut from 3mm and 5mm thick aluminium.
The motor mount is attached to the bottom bracket and rear shock mounts. I used longer bolts, the suspension works fine and the mount seems very solid.
The battery contains 80 samsung 18650 30Q cells running at 72v nominal - it lasts somewhere between 1 and 2 hours .
I used an arduino based spot welder to weld the nickel strips together on the battery.
There is no BMS (battery management system) on the bike due to lack of space but I use one while charging.
The bike does not live in the house - fire risk!
I added an anti chain suck extension to the motor bracket since these photos were taken.
Next job is to experiment with different controllers.

Regards

Mark

PS I few visuals....

I found the following youtube link which gives a good indication of what it's like to ride. Its not my build but it has similar specifications.

[youtube]RlKElZ4KANM[/youtube]


Here are some pictures I took ......

 

[motorman]

Looks great! Finally someone that have done the same reasoning as me and actually build the bike. I'm coming off from riding dirt bikes in the past too, (including ridiculous amounts of maintenance) but I realized this way of doing it would eliminate the need for a track (incl license), car and a trailer. Probably bit less speed and action compared to MX, but when adding everything together it's simply a no-brainer.

I'm in the process of integrating the same motor into an Enduro 2011 frame (L) and looking around for frame mounting ideas. Do you have any close-up pictures of the mounting system? And perhaps some dos and don'ts now as you have tested the system? I can see you're using the middle rocker link axle as one point of support, but the rest is hard to tell.

Looks like you've build this one for the roads right? I assume that thing have a good top speed with those front sprockets

 

[MarkLeeds]

Hi Motorman,

Thanks for your kind words, good to find someone thinking along the same lines. Actually I built this for offroad and it's absolutely mega. I ride it like a stole it and it seems to be holding up quite nicely I did have a 30 odd tooth sprocket connecting the crank to rear wheel and managed to burn out a motor. No biggy got to break a few eggs to make an omelette. I have made a 22 tooth for the front to try and solve the problem. I'll report back my findings.

I don't have a picture to hand of the mounting bracket - but I have uploaded all my designs to GrabCAD. If you search for the tag SpecializedEnduro14MEbikeProject everything should come up. Everything is designed to fit on a 2014 specialised enduro 26 inch medium size. If you were so inclined you could print out all the dxf files (scale is mm) and make it all out of cardboard. If you make any improvements perhaps you could upload them so I can benefit. I used inkscape and fusion 360 to design them. Have fun.

Please bear in mind I take no responsibility for their use. You use everything at your own risk.

 

[flat tire]

Now here is somebody with ebike talent. Get that man a real motor.

 

[motorman]

Mark,

Been busy relocating lately which paused the project a bit. I just printed out your motor bracket design on paper to compare with my own, but it seems like the hole distance for the motor is too small. Could it be that you have the cyclone mini? I did find a way to put mine in there too, but it's a tight fit! My 2011 frame might be a little bit less suited since the shock is mounted the other way. I'll upload the files and share them when I'm finished.

I'm a bit curious about your new 22 tooth sprocket setup. If I'm not too wrong you should have around 35 km/t top speed (at 36t rear) with the previous setup, which is a lot! The 22'er should step it down to 25 km/t, which still is quite much unless you're running a bigger than 36t rear (or mostly flat terrain). My math might be wrong though, or perhaps this is the trick to keep the front wheel on the ground? :lol:

Btw, have you checked if the batteries get hot while riding hard? Trying to figure out of I should run the same 4p configuration, or step it up to 5p (or perhaps even 6p).

 

[Raketemensch]

That’s a really interesting method of mounting the controller and battery on a frame like this. That allows the use of a lot more frames that don’t have much “triangle” space.

How does it work, width-wise, when pedaling? Are you bow-legged when you get off?