controller upgrade

JES2020

Active Member
Hey
Anyone have knowledge of a upgrade controller for the KT that comes with the Calibike 1500w 52v kit? (KT48SVPRM-GP1F2)
I am looking for 35a 48v instead of the 22a.

Otherwise any knowledge base for wiring new plugs would be appreciated.
 

JES2020

Active Member
I saw that too , looks like all the connections are different though.
I have called several times and emailed too.
Seems like he is not into after the sale customer service.
 

JES2020

Active Member
He has a phone number. I see he does sell a motor with a 35A controller.
BTW are you familiar with how to grease the motor? It's making strange sounds at times.
Also what type of grease would be helpful...also no answer from Rafe...I might be returning the whole kit and buy one with customer service. Any recommendations for EBIKLING service?
 

ninetimes

New Member
The problem that you're going to run into is that the 9-pin motor connector used in your kit is really only good for 30 amps, so most 35a controllers use a bigger connector that would be incompatible. There are some 30a controllers out there that should work, such as this one. If you just google "30a kt controller waterproof" you can find others. Just make sure they have the same 9-pin motor connector and 1-4 main cable (for the display, brakes and throttle).

It seems dishonest to market that kit as 1500w. Even with a 52v battery, at 22 amps it's only 1,144 watts.
 

JES2020

Active Member
The problem that you're going to run into is that the 9-pin motor connector used in your kit is really only good for 30 amps, so most 35a controllers use a bigger connector that would be incompatible. There are some 30a controllers out there that should work, such as this one. If you just google "30a kt controller waterproof" you can find others. Just make sure they have the same 9-pin motor connector and 1-4 main cable (for the display, brakes and throttle).

It seems dishonest to market that kit as 1500w. Even with a 52v battery, at 22 amps it's only 1,144 watts.
Thank you!
 

JES2020

Active Member
The problem that you're going to run into is that the 9-pin motor connector used in your kit is really only good for 30 amps, so most 35a controllers use a bigger connector that would be incompatible. There are some 30a controllers out there that should work, such as this one. If you just google "30a kt controller waterproof" you can find others. Just make sure they have the same 9-pin motor connector and 1-4 main cable (for the display, brakes and throttle).

It seems dishonest to market that kit as 1500w. Even with a 52v battery, at 22 amps it's only 1,144 watts.
That controller says it's 500w, will that fully push the 1144w motor ?
Follow-up question: if a KT controller has the matching connectors will the pins automatically be wired the same?
Thanks
 

ninetimes

New Member
The current controller is 11 amps continuous, 22 amps peak. Most sellers would market that as 500w (48x11). The 30a amp controller is 15 amps continuous. So that's about 200w more continuous power and 400w more peak power.

I'm not sure why they are calling it only a 500w controller but the math is simple. Maybe they are considering 36v only.

Edit: In response to your other question, there are no guarantees unfortunately but I'd say there is 95% that swapping one KT controller for another will have the same pinouts. I have done it myself a few times with no issues.
 

JES2020

Active Member
The current controller is 11 amps continuous, 22 amps peak. Most sellers would market that as 500w (48x11). The 30a amp controller is 15 amps continuous. So that's about 200w more continuous power and 400w more peak power.

I'm not sure why they are calling it only a 500w controller but the math is simple. Maybe they are considering 36v only.

Edit: In response to your other question, there are no guarantees unfortunately but I'd say there is 95% that swapping one KT controller for another will have the same pinouts. I have done it myself a few times with no issues.
Awesome! Thanks again
 

tomjasz

Well-Known Member
Yes please elaborate.
What do you mean by that?
Exactly as stated! Who buys a motor rated for 22A and expects a controller change to 35A as a reasonable alternative? Motors have limited specifications. Some motors can be pushed, others are a nightmare overvolted. We see this all the time here. Buyers enter into purchases with little due diligence and then the reseller is the issue. ARGH, Rafe if a good fellow and responds to reasonable expectations. So yes, there's more to the story.
 

ninetimes

New Member
Exactly as stated! Who buys a motor rated for 22A and expects a controller change to 35A as a reasonable alternative? Motors have limited specifications. Some motors can be pushed, others are a nightmare overvolted. We see this all the time here. Buyers enter into purchases with little due diligence and then the reseller is the issue. ARGH, Rafe if a good fellow and responds to reasonable expectations. So yes, there's more to the story.

Maybe the reseller can share some of the blame because he is advertising a 500w kit as 1500w? Maybe the customer just wants to get the power level he was promised?
 

JES2020

Active Member
Exactly as stated! Who buys a motor rated for 22A and expects a controller change to 35A as a reasonable alternative? Motors have limited specifications. Some motors can be pushed, others are a nightmare overvolted. We see this all the time here. Buyers enter into purchases with little due diligence and then the reseller is the issue. ARGH, Rafe if a good fellow and responds to reasonable expectations. So yes, there's more to the story.
Ahem ! How the hell am I supposed to know the motor is rated only to 22a. There is NO documentation with the kit and as already stated Rafe is extremely slow in answering questions, if he answers at all, weather they are "reasonable" questions or not!. I am not the only one who has experienced this with him.

It appears you have experience with this kit why don't you offer some helpful information? Instead you belittle the customer for my lack of knowledge on the subject, how do you expect ppl to learn about ebikes with no guidance??? I thought that's what this forum was for.

And yes, silly me, I did expect to get 1500w of power from this motor AS ADVERTISED.
I have since learned that Calibikes isnt alone in the practice of deceptive overblown advertising, in fact it's somewhat of an epidemic in the ebike industry. Maybe instead of blaming the customer, you should work to improve the image of ebike sellers? What a concept.
 

Calibike

New Member
The motor has a high speed winding. Controller says 22a measured actual is almost 28a.

You can see actual real time power and speed in video below. The power leads the speed by few seconds. So you will see max speed with lower power. Power is needed for acceleration and speed is actually integral of applied power

 

JES2020

Active Member
Exactly as stated! Who buys a motor rated for 22A and expects a controller change to 35A as a reasonable alternative? Motors have limited specifications. Some motors can be pushed, others are a nightmare overvolted. We see this all the time here. Buyers enter into purchases with little due diligence and then the reseller is the issue. ARGH, Rafe if a good fellow and responds to reasonable expectations. So yes, there's more to the story.
Looks like you were wrong about the 22 a motor limit .
Now who has little due diligence???
 

Calibike

New Member
Looks like you were wrong about the 22 a motor limit .
Now who has little due diligence???
Thomas is correct. If you put higher power controller you may fry motor and melt cable. The waterproof cables cannot take more than 1500w in my opinion