Cornering ABS retrofit on 401s

[Puss_In_Boots]

Hey, guys.

Did anyone try/ does anyone know if you can retrofit cornering ABS to 401s? I'm thinking here taking the lean angle module/IMU from KTM 390 Adventure/RC 390 2022 (both have this as standard) and mounting somehow on a 401?
For me the 401s would be totally perfect if they also have this feature.

Tx

 

[Dr.Shifty]

I suspect you would have to swap more than the IMU. That module would be talking with the vehicle control computer and then to the ABS unit. If those components are not identical to the 401 then the swap won't work.

 

[BISavage]

I would expect that is doesnt fit easily because of the wiring.

What is the advantage of cornering abs?

 

[Puss_In_Boots]

I would expect that is doesnt fit easily because of the wiring.

What is the advantage of cornering abs?

This video explains more than I would do it:

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[BISavage]

Hahah, thats why on each of the 18 pages of the handbook we had read to get a license back in the day it said: do not to smash the front brake in a turn!

I think its good that bikes come with abs, in general.

Check this out:

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[poor_choices]

I preface this with the note that it’s all supposition, as I have no specific knowledge of the 401’s implementation (yet?):

As a CANBUS vehicle, I’ll concur with Shifty below and say I‘m not sure just the IMU would be enough. CANBUS communications broadcast all messages on the vehicle’s network (good!), and all modules hear them. Individual modules ”listen” for the messages appropriate to them by filtering out what they want to hear from the greater noise: like having a conversation in a loud bar. The IMU would be listening for IMU related commands, and in turn broadcasting its own responses. That said, the ECU for the pilens wouldn’t likely be programmed to broadcast anything the IMU would want to hear, because obviously it wouldn’t expect anything to be listening*. In turn, the ABS modules themselves wouldn’t* be listening for messages from the IMU in turn.

So, you may find a way to plug it into the harness, great, and you may be able to bring over other parts, but to some extent it’s the old “if a tree falls in the forest” problem. It might (again, a guess) require an entire system swap.

*That is to say, assuming KTM/HQV didn’t use the existing code as the foundation for the pilen’s code base. This could have been a clean-slate, greenfield project, or they could have scaffolded on top of the legacy code (more likely) for reasons of economy. The relevant lines could just be commented out in the ECU.

There is an active CANBUS community out there. I don’t yet have hands on my vitpilen but this avenue interests me. If you do go down this path of experimentation I’m curious to see what comes of it.

I suspect you would have to swap more than the IMU. That module would be talking with the vehicle control computer and then to the ABS unit. If those components are not identical to the 401 then the swap won't work.

 

[Puss_In_Boots]

I preface this with the note that it’s all supposition, as I have no specific knowledge of the 401’s implementation (yet?):

As a CANBUS vehicle, I’ll concur with Shifty below and say I‘m not sure just the IMU would be enough. CANBUS communications broadcast all messages on the vehicle’s network (good!), and all modules hear them. Individual modules ”listen” for the messages appropriate to them by filtering out what they want to hear from the greater noise: like having a conversation in a loud bar. The IMU would be listening for IMU related commands, and in turn broadcasting its own responses. That said, the ECU for the pilens wouldn’t likely be programmed to broadcast anything the IMU would want to hear, because obviously it wouldn’t expect anything to be listening*. In turn, the ABS modules themselves wouldn’t* be listening for messages from the IMU in turn.

So, you may find a way to plug it into the harness, great, and you may be able to bring over other parts, but to some extent it’s the old “if a tree falls in the forest” problem. It might (again, a guess) require an entire system swap.

*That is to say, assuming KTM/HQV didn’t use the existing code as the foundation for the pilen’s code base. This could have been a clean-slate, greenfield project, or they could have scaffolded on top of the legacy code (more likely) for reasons of economy. The relevant lines could just be commented out in the ECU.

There is an active CANBUS community out there. I don’t yet have hands on my vitpilen but this avenue interests me. If you do go down this path of experimentation I’m curious to see what comes of it.

I enjoyed the fully detailed answer. I would go on this path if it's not too complicated to have it done, but it doesn't look that way.
I think most of the people are just enjoying these bikes how they are, although this feature would be a safety net which it's nice to have.

 

[poor_choices]

I enjoyed the fully detailed answer. I would go on this path if it's not too complicated to have it done, but it doesn't look that way.
I think most of the people are just enjoying these bikes how they are, although this feature would be a safety net which it's nice to have.

I'll also add I'm no expert on CANBUS operations, but it's something I've taken an interest in. There's a CAN hacking community out there and it's on the list of technologies I'm curious about—if the day job ever allows me some free time.