Rebody Door locks on Rebody

Duncodin

Zorg Guru (III)
Supporter
Joined
Sep 8, 2021
Points
139
Location
Pontrhydyrun
Model of Z
Z3 M44
On the subject of door handle gaskets.

I've 3D printed a rubber gasket. 1.2mm thick, it just sits around the edge of the handle. I know that there are others made from moulded rubber which probably form a small cup that the handle sits inside of. I could have a go at doing something similar but 3D printed rubber gaskets can get a bit messy on their top surface which is why I like to keep them underneath. Maybe I could send one to @Duncodin for comparison purposes?

Another consideration is that the gasket looks like it might interfere with the handle's hinge pin. If so I can slim the gasket a bit or maybe trim a small section around where the head of the hinge protrudes.

I think it might be useful to put a couple of uprisers into areas where there aren't any moving parts, just to keep everything tucked under the rim of the handle. I'm thinking at either end of the handle and at the point between the hinge and the push button well.

I'd be interesting to see the shape of the original... Any photo's available?

View attachment 308667

Ian, let me know if you'd like to review the gasket, I can send you a handle base too. I've ordered some more of everything in what I hope to be the final iteration so it's back to the waiting game...
Screenshot_20240708-175554_Gallery.jpg
 

Duncodin

Zorg Guru (III)
Supporter
Joined
Sep 8, 2021
Points
139
Location
Pontrhydyrun
Model of Z
Z3 M44
You have the original handle I sent to you so can see where that cross piece sits.

I don't think I can review the fit. I'd say you're far better than I am and you've got a door to check it on.
 
Last edited:

argy

Regular Member
Joined
Mar 9, 2024
Points
18
That photo helps 👍. Mine is a bit two dimensional at the moment.

I'll work on getting a bit closer to the original concept, thanks
 

argy

Regular Member
Joined
Mar 9, 2024
Points
18
I'm pleased to let you know that the 507 door handle is now live on our grassbankconversions.co.uk website here

20240725_175128.jpg


20240725_180836.jpg


Three handles arrived on Wednesday afternoon and, thanks to our excellent metal polishing partners, I was able to get them back all nice and shiny yesterday afternoon ready to ship the first pair next week. I have some ideas about how to make the installation process much simpler and a prototype of that (seen in the 2nd image) will be sent with the first pair next week.

The design changed again based on experience gained from previous versions and I'm delighted with the simplicity and performance of this solution. The pulley provides a low friction path from the handle lever to the Z3 lock lever. It also forms an enclosed route so it does the job of a cable guide which is to stop the cable falling off the pulley.

The position of the handle on the door aligns perfectly with the point on the lever exactly where the pull needs to happen. The widget that attaches to the Z3 lever is intended to help make the connection from the handle to the Z3 latch pretty much plug and play. The plan is that with this optional installation kit a pre-formed cable will hook over the widget whose position can be adjusted to ensure the correct amount of slack along with the necessary amount of movment before being clamped in place. The kt will also include a bond-in load spreader to help minimise the prospect of the rear M6 fixing bolt causing the 5mm thick fibreglass to craze and crack on the outside...

The balance between slackness and range of movement is important in the context of minimising the potential for deadlocking. Slackness unloads the tension on the Z3 lever. Tension on the Z3 lever is the main cause of deadlocking. Having the right amount of travel in the lever is essential to ensure that the door can be opened. The kind people at BMW ensured that the Z3 latch releases at about 60% of its way along the full range of travel. In this configuration that amounts to about 12mm along the full 20mm of travel. The pre-formed cable will be based on my door panel which is screwed directly to the Z3 panel (so no bonding agent in the way). It will be set so that the Z3 latch will have around 18mm of travel when positioned at its furthest point. I think 18 is a good number because it introduces a couple of mm of slack and has almost the full range of travel. The length of the cable is under 10cm and even allowing for contraction in cold weather this should still ensure enough slack to continue to minimise making a contribution to deadlocking.

The adjuster widget will allow for up to -4mm of adjustment so if it were to be simply moved to the opposite end of the range then it should still allow around 14mm of Z3 lever travel. The objective of the adjuster is to allow for outer door skins which end up being further away from the Z3 door panel. If it turns out that the door skin ends up being closer to the Z3 door panel then there is a Plan B and a Plan C...

Leadtime is around 4-6 weeks.
 

Piran

Dedicated Member
Joined
Oct 21, 2022
Points
41
Fresh from Grassbanks conversions I now have fitted the 507 handles. They're really nice and solid lovely workmanship
1000004603.jpg
 

Piran

Dedicated Member
Joined
Oct 21, 2022
Points
41
A short video of the drivers side door, this is using the shorter cable and releases quite soon on pulling (the cable I have on the passenger side is longer and releases later in the pull

 
Top