Hi guys, I'm looking at getting a custom shiftknob milled at my work (can't mass produce, sorry, it's being done for free, as a favour), but I need to know where I can purchase the plastic insert with the correct thread, to thread onto my car. I was gonna re-use the plastic bit from the inside of my Nismo ****, but it's too thick, and I can't maintain the elegant shape I want, while still having enough wall thickness.
The design that I'm going for, is a replica of the NSX Type S ****. The outside diameter of the plastic insert on my Nismo seems to be 0.755" forcing me to maintain an OD of greater than 1" at all points on the ****. I want it to be 1.3" at it's thickest, but drop down to maybe 0.625" at the thinnest point, before it flares out to meet the shiftboot.
Now, I obviously don't want to just buy an NSX Type S ****, because aside from it being silly overpriced (160 USD vs free), the thread is wrong too.
Any input is greatly appreciated! The sooner someone helps me, the sooner I can get pics of it fitted to my car
I'm willing to share the CAD drawing of it, if anyone wants to get their own made, but you would still need to get the CNC program made, as I cannot share that, since I am not the one making it.

 

pen!s shaped shiftknobs FTL!

 

LOL, screw you! I think it looks really good. Either way, I just need to know how to get it onto my car. It'll look really smexy when it's done

 

it will probably be easier to use aluminum instead of plastic, thats what TWM chose to do with my shift **** for the Nissan application

 

Okay, since I wasn't finding any inserts anywhere, I decided it made a lot more sense to just drill and tap it directly.
The thread tap needed if anyone else is curious about making a custom **** is a M10 P1.25
The drill used is an 11/32" or 0.344"
I've decided to post up my CAD drawing, incase people really like this ****, and would like to make their own. I'm hoping that by keeping it public like this, people won't try to reproduce them and ask for a lot of money for them. This way, anyone can make their own if they have the means.

 

yes, in your application where you want a particular **** to fit your car and you are making it anyway, doing the direct thread makes more sense.

others obviously need inserts so that they can make one **** for many cars.

i love my weighted TWM, its just a simple 2" ball

 

Yea, it depends on how you hold your shifter. If you have your hand on top of it, ball is best, if you hold it from the side, like a joystick, a... *****... shape is more suitable
Despite obvious humorous connotations, I prefer the latter

 

i grew to like the ball shape when i had my audi for a short time.