Micargi Cyclone Deluxe 500W Rear Hub Brushless motor Stretch Cruiser, pedal assist only, convert to Throttle? HELP. 😊

Joined
Feb 6, 2025
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Location
Maryland USA
Hey everybody newbie ebike builder Crazyhorse here, some of you may recognize my screen name for M-bicyclin dot com Forum. I have 3 questions.

1.‘I have a Micargi Cyclone Ebike Pedal Assist Only’, fat tire 26 inch stretch cruiser has a 500-watt torque sensor brushless motor by Bafang. With 9 - mosfets cable coming from rear hub motor, can I change the motor controller, to upgrade to a throttle?

2.Please anyone converted a Bafang 500 watt 48 volt 22 amp “ pedal assist only to throttle “,?

3.How should I do this conversion, I’m hoping to change the motor controller and want to make sure I do it correctly this bike is a $2,000 bike don’t want to screw it up.

Peace Crazyhorse.☮️👍😊
P.S. Thank you to all for your knowledge and suggestions, and to the Mod’s please move this post to the correct forum if this was posted incorrectly my apologies.
See pic’s of the stock controller, it’s a 22 amp, 48 volt 500 watt, with only 3 cables out of controller, 1 - 9 pin female to motor, 1 - 6 - pin male to torque / speed sensor bottom bracket, and 6 - pin male to display.
 

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I am sure you could replace the entire controller with one that has a throttle and cadence assist, but would that be an upgrade or downgrade on this bike? I vote for an upgrade because this isn't the kind of bike where you get a rush from torque sensing is it?
cuclone.jpg
Looks like you have a controller in the battery base? That could be a wrinkle. This is the only one I am aware of. You'll want to post pics of the entire battery and cradle, Maybe someone will recognize it.


But if you willing to put a 20-22A controller somewhere in a box on the frame, there's all kinds that will fit. You'll buy a matching display, throttle and PAS sensor with it,
 
I recommend a 22-26A three mode controller (if your battery can swing it), a 9 pin breakout cable, a throttle, and a handlebar mounted switch to turn the thing on. Yes you can get a display, but that's more cost, more cables, more ways to let you down.

My bikes that have displays pretty much only serve as voltmeters to me, and you can add one of those if you need it, without adding a lot of deciduous crap that will stop your ride.
 
FYI, Grin Technologies recommended that I join endless-sphere as they said their controller would not work for me. ☹️
Which controller? They make several, at the least there are Phaserunner, Baserunner, and Frankenrunner (and variations of those).

Did they say specificially why it would not work? Knowing that will help us help you find one that will.

If we don't know why it wont' work, we also won't know why any other one might not work. ;)
 
Which controller? They make several, at the least there are Phaserunner, Baserunner, and Frankenrunner (and variations of those).

Did they say specificially why it would not work? Knowing that will help us help you find one that will.

If we don't know why it wont' work, we also won't know why any other one might not work. ;)
Hello amber wolf and thank you for your reply, I sent Ben an email asking which if any of their “Grin Tech “ controllers would give me an option to add a throttle.

This was his reply last week:
Hi Crazyhorse,

I'm afraid that due to this being a bike that uses 3rd party components, we won't be able to assist you in adding a throttle, as our components will most likely not be compatible with your bike. I'd recommend contacting Micargi directly for a throttle.

Thanks,


Ben
Mr. Build-a-Bike
Sales and Technical Support
Grin Tech Logo Square White.jpg
 
I forgot to post the pics you suggested, that maybe someone might recognize this setup and make further recommendations ☮️
I am sure you could replace the entire controller with one that has a throttle and cadence assist, but would that be an upgrade or downgrade on this bike? I vote for an upgrade because this isn't the kind of bike where you get a rush from torque sensing is it?
View attachment 365342
Looks like you have a controller in the battery base? That could be a wrinkle. This is the only one I am aware of. You'll want to post pics of the entire battery and cradle, Maybe someone will recognize it.


But if you willing to put a 20-22A controller somewhere in a box on the frame, there's all kinds that will fit. You'll buy a matching display, throttle and PAS sensor with it,

Thank you docw00, for your suggestion here’s a few pic’s showing battery, display, controller, and torque sensor that I wish to delete and convert to throttle, I’m to damned old to pedal this beast very much, but I love the bike 🤗

Thanks again for your help, Peace Crazyhorse.☮️👍😊
 

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I recommend a 22-26A three mode controller (if your battery can swing it), a 9 pin breakout cable, a throttle, and a handlebar mounted switch to turn the thing on. Yes you can get a display, but that's more cost, more cables, more ways to let you down.

My bikes that have displays pretty much only serve as voltmeters to me, and you can add one of those if you need it, without adding a lot of deciduous crap that will stop your ride.
Chalo, thank you for your insight along with other forum members.
Thought I’d share that my bike is not the newer version which is called Micargi Cyclone, the newer version has a controller mounted on the seat down tube, mine is inside the battery rail.
My bike is the 2020 version called “ Micargi Cyclone Deluxe “, which comes with F & R fenders, and “ it is equipped with lightweight lithium-ion Panasonic batteries that are of premium-quality, safe and durable”, from the micargi website, I’m sure others that own this same version would love to upgrade to a throttle as it‘s a beast to start off from a stop, but the torque will snap you head backwards 🙀 it‘s plenty of power for me at 175 lbs and the bike weighs about 80lbs, reminds me of how heavy my old 1971 Schwinn Orange Krate was for a 14 yr old back in the day, my parents would give me hell for carrying that bike upstairs to my bedroom every night to keep it safe from thieves lol.
see attached pic’s of newer version has no fenders is grey color with controller mounted on seat down tube, mine is black color and it’s the first edition With controller mounted inside battery tray / rail. ☮️👍😊 Crazyhorse.
 

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Going to need a better view. Top down and sideways. AVailable battry cradles include these three, and all are different. You;re going to be comparing those notches to make sure you have the same base, if you plan to buy a controller that will fit in there,cradles.jpg
And why don't you show your own photo from the other side of your cruiser, so the chain guard doesn't block what the battery looks like, when mounted.
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You might be better off finding someone who wants a torque sensor controller. and swapping in a new battery/controller. That's a nice combo for torque sensing. Be a shame not to have it used.

The other option is examining the controller to see if it has solder pads for a throttle, but I kind of doubt it, and it's a job for the electrical types.
 
Going to need a better view. Top down and sideways. AVailable battry cradles include these three, and all are different. You;re going to be comparing those notches to make sure you have the same base, if you plan to buy a controller that will fit in there,View attachment 365360


docw009, it’s not mounted on the bike I removed it but here are closeup pic’s, my apologies for the confusion.
I do appreciate your help, with my conversion to add a throttle, many thanks to you for your knowledge and experience
I don’t mind adding an external controller if necessary, but then I’d need to use a different battery my conundrum.

And why don't you show your own photo from the other side of your cruiser, so the chain guard doesn't block what the battery looks like, when mounted.
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docw009, here’s a closeup view of the battery rail it has 4 flat prongs and also a pic of battery inserted into battery rail.
thanks Crazyhorse. ☮️👍🤗
EDIT: P.S. docw009, do you want to see inside the controller it’s held onto the battery rail by 4 small screws I can easily open it up, just let me know thanks again, you guys are the best!
 

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Getting a controller that ticks my boxes, but fits in the battery mounting rail, is probably not possible. Fortunately, the cavity where the controller would fit can be bypassed and simply have a power plug sticking out of it, to attach to an external controller.

Battery seems to be 13S 4P of 2900 mAh cells. So a 26A controller like I suggested would demand about 6.5A per cell at full tilt, which might be in excess of spec but is most likely in bounds since most such cells have a 10A limit.

In this situation, I would probably go for a scratch install of a new electric system, and repurpose the old parts for someone who wants what they do. But in principle, it seems that everything here could be reused except the controller.
 
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