Does anyone know the internal bore size of the OE brake rod?

[Hogmonster]

Hi,
I am Andrew from the UK and have a 2021 F3-S which I bought new. I have very recently purchased an MTV handlebar brake conversion kit as I have disabilities.
I have a background as a motorcycle mechanic so I feel I am competent to fit it. My footrest is on position 5, to fit the brake pedal hydraulic actuator you have to move the footrest to position 4 or grind the locating peg off the footrest/Brake pedal bracket and move it to position "4½" as the actuator fouls the frame in position 5.
Doing this is going to alter the brake rod/brake pedal position. I am going to convert my brake rod to a adjustable rod by tapping out the internal hole of the tubing and fitting a left hand/right hand adjuster so that it can be adjusted in situ.
Does anyone know the internal bore size of the OE brake rod? Also am I correct in saying that each footrest position from 1 - 5 is approximately 25mm (1") apart?

Many Thanks, Andrew (UK).

 

[jcthorne]

Slingmods has an adjustable rod for position 4 and 5 available to purchase.

Years ago when the F3 first came out and there were no adjustable or revised brake rods available, I attempted to do the exact mode you are contemplating. Do not remember the ID for the rod but what I do remember is that its NOT mild steel, was a rough interior finish, not smooth tubing and its also very hard and brittle. I had zero success attempting to tap threads into it for an adjuster. Broke several taps trying and the threads I did cut just shattered as I went.

 

[Pathfinder]

I am also disabled and had the dealer install a ISCI hand brake purchased from Slingmods. This is a very expensive mod but it does work.

 

[Hogmonster]

Slingmods has an adjustable rod for position 4 and 5 available to purchase.

Years ago when the F3 first came out and there were no adjustable or revised brake rods available, I attempted to do the exact mode you are contemplating. Do not remember the ID for the rod but what I do remember is that its NOT mild steel, was a rough interior finish, not smooth tubing and its also very hard and brittle. I had zero success attempting to tap threads into it for an adjuster. Broke several taps trying and the threads I did cut just shattered as I went.

Thank you for the info & comments that is very helpful and good to know.

Andrew...