[matthew.stead]

Hi all,

My build is coming along (current status) in the photo below. It is a 2014 Leaf into a 1975 BMW. At the moment it thankfully still works after a few near misses.

Also see: BMW 2002e - my conversion of a BMW2002 using a Leaf...

I would like to see if anyone has an elegant solution for the "park actuator" as described on @Tremelune's post:

Current state of Leafs as donors?

Is there a good resource somewhere that will help explain the behavior of motors when they're "under-volted"? The Leaf motor/battery are overpowered for my needs by probably 2x. With this combo, I'm more concerned with top motor speed than I am about torque/range. There's probably something good...

www.diyelectriccar.com

This is also shown in

by @skooler

See photo below of the actuator still in the gearbox casing.

I would love to be able to fool the actuator in some way to keep the donor car working but without the messy gearbox park assembly. Currently, when I move from Park the shaft rotates and disengages. From what I understand this is normal behaviour. Previously there was a mechanism to stop the gearbox rotating when it was in Park. This was removed with the other half of the gearbox.

Does anyone have success with fooling this system?
(p.s. the part number is: 33251 3NF0A by Denso).

 

[julwaech]

I have no solution, but i'm also interested in a workaround. Does somebody know what connector this is? I only have the actuator without the connector.

 

[matthew.stead]

Photos of the 10 Pin connector (only 8 used). Sorry I don't know the model. It seems to be 4 power and 4 data (from possible 6).

 

[matthew.stead]

@julwaech

 

[dedlast]

Here (maybe) is the parking actuator section from the 2014 service manual. Maybe it will be of some help.

Bill

 

[dedlast]

Also, I should mention that when I had my Leaf stuff scattered over the garage floor, I made a shaft that would fit into the parking actuator. It had a flat ground in the other end with a piece of angle steel bolted to it that would catch on a bolt threaded into one of the mounting holes. It was pretty hokey but it served to stop the rotation a bit short of a full revolution and fool the actuator into thinking it was working correctly.

Bill

 

[matthew.stead]

Thanks Bill - @dedlast thanks for the service manual and also the details on the compact solution you used. Do you know if the actuator needs to stop at certain angles or just needs to stop?

I could easily take the original shaft (with a bolt through the shaft) and using the mounting bolts create 3 stops (3 mounting bolts). Two bolts could then be used to limit the shaft.

Do you know if there is a range of movement it needs? or does the shaft just need to be stopped from rotating?

ps - @julwaech did you have any luck?

 

[matthew.stead]

pps. @Dala - just posted a link to EV conversion with Leaf parts (used) | Resolve-EV which looks like it will remove the need for the park actuator by using a different controller. Very very interesting.

 

[julwaech]

ps - @julwaech did you have any luck?

I had no time to work on it yet, but the service manual is really helpful!
Also thank you for the pictures of the connector! Although it's still hard to find.

 

[dedlast]

Mathew,
My guesstimate is that it just needs to stop, maybe after a short rotation. I had about 120 degrees of rotation on my temporary fix and the OEM setup looks like a bit less than that.

B

 

[matthew.stead]

Mathew,
My guesstimate is that it just needs to stop, maybe after a short rotation. I had about 120 degrees of rotation on my temporary fix and the OEM setup looks like a bit less than that.

B

I had a look and it appears the standard rotation is around 30 degrees.

 

[InductiveJon]

I am working on a design for this that uses a small waterproof linear actuator with internal limit switches. Basically you apply 12v in one polarity or the other to lock and unlock the parking pawl on the Leaf motor. It's a bolt on solution, but it does require re-use of the splined adapter from inside the original actuator.

Is this something anyone else would be interested in?

 

[matthew.stead]

I am working on a design for this that uses a small waterproof linear actuator with internal limit switches. Basically you apply 12v in one polarity or the other to lock and unlock the parking pawl on the Leaf motor. It's a bolt on solution, but it does require re-use of the splined adapter from inside the original actuator.

Is this something anyone else would be interested in?

@InductiveJon - I have ended up using the Resolve Controller - which does not need the parking pawl - see EV conversion kit with Nissan Leaf parts (used) | Resolve-EV

 

[AlexH]

I am working on a design for this that uses a small waterproof linear actuator with internal limit switches. Basically you apply 12v in one polarity or the other to lock and unlock the parking pawl on the Leaf motor. It's a bolt on solution, but it does require re-use of the splined adapter from inside the original actuator.

Is this something anyone else would be interested in?

@InductiveJon ... yes would be very interested in this as we are reusing the LEAF gearbox and are keen to use the whole P-brake system, but we don't have the LEAF VCM. The encoder in the actuator talks via the VCM so we need to bypass this. something like the linear actuator you descibe could work.