Is there a decent 24v conversion kit ?

I'm looking for this type of conversion kit
But for a 24v battery, because I have a huge capacity 24v battery laying around

Any idea?
Thank you for the help

Sean.p said:

I'm looking for this type of conversation kit

https://a.co/d/fgKUQSn

But for a 24v battery, because I have a huge capacity 24v battery laying around

Any idea?
Thank you for the help

Click to expand...

What is a "conversation kit"? I haven't ever seen one of those, in relation to ebikes.

As for ways to use a 24v battery, that would depend on what the battery is capable of, and what you need it to do for you.

What are the complete specifications / ratings of the battery? Note that huge-capacity batteries (like 50-100Ah+, for ebike stuff) are typically actually huge sizes and weights as well, and not generally suited to mounting on bicycles.

What do you need the battery to do for you? If it's going to run an ebike, what are your riding conditions, terrain, weather/winds, rider and bike weight, speeds you need to go, acceleration you require, etc?

More detail will help us help you better; less info restricts the usefulness of answers you may get.

Sorry, it was a typo, conversion kit...
If it's going to run an ebike,
 yes
what are your riding conditions,
terrain, weather/winds,
Flat, no wind

rider and bike weight,
Rider 200lb, bike might be a fat tire, depending on the kit I find

speeds you need to go,
acceleration you require
speed and acceleration not so important , just want to be able to ride and have fun

Sean.p said:

Sorry, it was a typo, conversion kit...
If it's going to run an ebike,
 yes
what are your riding conditions,
terrain, weather/winds,
Flat, no wind

rider and bike weight,
Rider 200lb, bike might be a fat tire, depending on the kit I find

Click to expand...

What bike are you going to use?

Need to know that to suggest a kit that will fit it, and all the accessory parts you'll need to successfully install the kit safely.

For instance, if you want a fat tire setup, the bike has to be able to fit that wide a wheel and tire. There are also many wheel / tire sizes and diameters, and we'd need to know which one you have to pick a kit that fits it.

You can also not pick a bike first and instead pick the bike based on the kit, but that means it'll be up to you to figure out if the kit will actually work on that bike once you get them both in the same room.

Sean.p said:

speeds you need to go,
acceleration you require
speed and acceleration not so important , just want to be able to ride and have fun

Click to expand...

Well, if you are going to ride at 5mph, you want a different setup than if you ride at 20mph.

"fun" is different for everyone, and we have no idea what you consider "fun", so I can't provide any help to find a kit that does that for you. :/


Still need to know about your battery. If we don't know what it is capable of, we can't suggest a kit that will definitely work with it without damaging it, and you'd just have to modify things or build things or buy other things to ensure that wouldn't happen.


There are a lot of other things to choose from, if any of them are important. If they are not important, then you'd just end up having to use whatever options come on whatever kit is found first that does the other things you want.



Do you want it to operate only from the pedals, or only from the throttle, or ??

Do you want assist levels you can choose from, with the pedals / etc just turning it on at that level? Or do you want full control over the amount of assist you get from whichever control you're using?

Do you want a display, and if so, what kind of information did you want from it?

Do you have a budget limit? If so, what is it? (otherwise we assume unlimited funds )




If you don't want to answer any of the questions, that's ok, but as I said before:

More detail will help us help you better; less info restricts the usefulness of answers you may get.

If you want it to literally just be a 24v version of the kit at your link, we can try to find one of those.

All of the display options at that link say they will work on 24v. It doesn't provide the controller voltage ranges, so that part of the kit might not work on 24v (though it would seem odd to provide displays that can, but a controller that can't). You could check with the seller to see what the included controller can do. (or what it's specific model is, to find a different one that would work with all the other kit parts but also with 24v).


I've included all the images from that link and the specs it provides, for reference.

Varstrom 48V 1000W Electric Bike Conversion Kit - High Speed Rear Hub Motor for 26"/700C Wheel (29er Compatible) with LCD Display & Battery Options...
$189.99

• Powerful Brushless Gearless Motor:The Varstrom 48V1000W rear hub motor, a powerful and efficient motor designed for electric bicycles. With a high-speed performance, this motor can reach a maximum speed of 55KM/H, providing a thrilling riding experience. Featuring a maximum torque of 66N.m, the motor offers strong acceleration and exceptional climbing ability, making it ideal for various terrains and conditions
• Universal Compatibilityesigned to fit most bike which rear dropout widths of 135-142mm with a 10-speed cassette or less, it seamlessly integrates with disc brake systems.The intelligent Pedal Assistance System (PAS) allows you to have throttle / pedal assit / walk assit / pedal bike 4 riding modes. The suitable riding mode can be switched as needed. It can reduce fatigue and ride more comfortably and great for long trips
• Easy Installation&Complete Compenents:User-friendly installation is facilitated by detailed manuals and video tutorials. Plus, our US-based tech team offers phone assistance for added convenience, ensuring a hassle-free setup.The Ebike kit includes most essential accessories for a complete upgrade, minus the battery, which need be bought separately, allowing for a one-stop shopping experience tailored to enhance your cycling adventures
• Customizable Display Options：Personalize your e - bike experience by choosing from premium displays like 500C, DPC18, P860ML, DZ40, EKD01, SW2-M58, and DM03. Each display has unique features, allowing you to customize your cycling data and interface for a personalized ride
• Personalize Your Battery Selection: The Varstrom 48V 1000W 26" rear hub motor kit is compatible with the 48V 13Ah/17.5Ah/19.2Ah/20Ah and 52V 20Ah electric bike batteries we provide (if you choose the "without battery" option, your shipment will not include a battery); please make sure you prepare a compatible 48V battery in advance. The motor will be equipped with a male XT60 connector, so please make sure your battery connector is compatible with this motor

Click to expand...

Product Description​

Specification
Rated Voltage : 48V
Rated Power : 1000W
Max Torque : 66 N.m
Position : Rear Cassette Wheel
Wheel Diameter : 26"/700C
Construction : Brushless Gear Motor
Efficiency : ≥82%
Noise Grade : ＜55 dB
Operating Temperature : -20-45 ℃
Packing List
Varstrom 48V 1000W Rear Hub Motor with Rim & Spokes
Display :500C, DPC18, P860ML, DZ40, EKD01, SW2-M58 and DM03 (Optional)
Controller
Controller Box
Brake Levers / Brake Sensors (If you want to keep your original hydraulic brakes or if your brake lever is intergrated with the shifter , please contact us to get the brake sensors )
Thumb Throttle
Left PAS Sensor
1T4 Cable
Headlight
Tips for Customer
1. Please kindly note that the rear OLD of your bike should be 135-142mm .
2.The gear shift is different from freewheel and cassette wheel. Hub Motors on this page only fit for cassette wheel.

Click to expand...

The controller must be rated 24v to work with the battery you have. The controller must be brushed if motor is brushed, and brushless if motor is brushless. The torque will be weak at 24v, with a top speed of 15 mph. A motor will run with whatever voltage you provide, but overheat easier with more voltage. A 26" brushless hub motor is probably best in your situation, 500w- 750w.

MxusMick said:

24v hub motor is probably best in your situation, 500w- 750w.

Click to expand...

Yea where to find such wattage? Like 750w would be perfect

amberwolf said:

What bike are you going to use?

Need to know that to suggest a kit that will fit it, and all the accessory parts you'll need to successfully install the kit safely.

For instance, if you want a fat tire setup, the bike has to be able to fit that wide a wheel and tire. There are also many wheel / tire sizes and diameters, and we'd need to know which one you have to pick a kit that fits it.

You can also not pick a bike first and instead pick the bike based on the kit, but that means it'll be up to you to figure out if the kit will actually work on that bike once you get them both in the same room.



Well, if you are going to ride at 5mph, you want a different setup than if you ride at 20mph.

"fun" is different for everyone, and we have no idea what you consider "fun", so I can't provide any help to find a kit that does that for you. :/


Still need to know about your battery. If we don't know what it is capable of, we can't suggest a kit that will definitely work with it without damaging it, and you'd just have to modify things or build things or buy other things to ensure that wouldn't happen.


There are a lot of other things to choose from, if any of them are important. If they are not important, then you'd just end up having to use whatever options come on whatever kit is found first that does the other things you want.



Do you want it to operate only from the pedals, or only from the throttle, or ??

Do you want assist levels you can choose from, with the pedals / etc just turning it on at that level? Or do you want full control over the amount of assist you get from whichever control you're using?

Do you want a display, and if so, what kind of information did you want from it?

Do you have a budget limit? If so, what is it? (otherwise we assume unlimited funds )




If you don't want to answer any of the questions, that's ok, but as I said before:

More detail will help us help you better; less info restricts the usefulness of answers you may get.

Click to expand...

Hey @amberwolf
If i told you that i am looking for a 750w motor
Will that answer all your concerns?.

You need to be thinking of the turn count of the motor's windings for the desired max. speed for a nominal 24 volt battery.
Then get the controller for that motor, voltage, and power.

Sean.p said:

Sorry, it was a typo, conversion kit...
If it's going to run an ebike,
 yes
what are your riding conditions,
terrain, weather/winds,
Flat, no wind

rider and bike weight,
Rider 200lb, bike might be a fat tire, depending on the kit I find

speeds you need to go,
acceleration you require
speed and acceleration not so important , just want to be able to ride and have fun

Click to expand...

Sounds like you haven’t decided on the donor bike yet, so it would be difficult to recommend kits without knowing what is being converted.
When searching for kits, search on “24v/36v/48v” as part of the criteria, since many kits and controllers are designed to operate at different nominal voltages, so you should get better results. Include whatever wheel size you think you’ll be using, and front vs rear hub.
If you are riding on flat ground, I’d recommend a geared front hub, since it’s an easier installation, and geared will be better performance at lower power levels. But that’s without knowing other details about your donor bike, etc.

E-HP said:

Sounds like you haven’t decided on the donor bike yet, so it would be difficult to recommend kits without knowing what is being converted.
When searching for kits, search on “24v/36v/48v” as part of the criteria, since many kits and controllers are designed to operate at different nominal voltages, so you should get better results. Include whatever wheel size you think you’ll be using, and front vs rear hub.
If you are riding on flat ground, I’d recommend a geared front hub, since it’s an easier installation, and geared will be better performance at lower power levels. But that’s without knowing other details about your donor bike, etc.

Click to expand...

So doing some more reading, on rider size i think that
29 mountain Bicycle is my target frame
And I was reading that 250w is going to be weak on it so preferences is 750w and above

But there isn't such an animal 750w 24v conversion kit
Maybe I need to get everything separately? Or just use a 24v to 48v step up?

You should restate all of your requirements/wishes again so folks know what you now want since it sounds like it’s changing as you become more informed.

“speed and acceleration not so important , just want to be able to ride and have fun“
“And I was reading that 250w is going to be weak on it so preferences is 750w and above”

24v is really more of a kids scooter power, 36v is a better build option for the money, hassle, etc. 29" wheels won't travel uphill without pedal assistance, not sure what your conditions are. I know I wanted more speed after building 36v, so you should build your ebike to handle a future voltage upgrade, for no regrets.

I once built an e-bike with a BMC hub motor that had a very high RPM per volt-- over 700 RPM on a 48 volt battery. To reconcile wheel diameter, available power, and appropriate road speed, I set it up with a 24V controller and two 24V "kettle" batteries in parallel. It goes at least 23 mph with its 24 x 3" wheel and it's been running reliably for over 6 years now.

I am using a Bafang G310 Fast wind rear hub motor with a 6S lipo battery pack. Nominal voltage is 22.8V.

With a 700C rim it provides assist up to 18.5mph.

With a 29" wheel it would push up to 20mph.

Chalo said:

I once built an e-bike with a BMC hub motor that had a very high RPM per volt-- over 700 RPM on a 48 volt battery. To reconcile wheel diameter, available power, and appropriate road speed, I set it up with a 24V controller and two 24V "kettle" batteries in parallel. It goes at least 23 mph with its 24 x 3" wheel and it's been running reliably for over 6 years now. View attachment 369044

Click to expand...

You need to put some shrouds or something over the back of those two batteries so that they look even more like jet engines than they already do.

harrisonpatm said:

You need to put some shrouds or something over the back of those two batteries so that they look even more like jet engines than they already do.

Click to expand...

Or two subway bags for that stealth food delivery look.