TOPIC:

Hold on and let me remeasure that last one. The steering arm itself only measures 6.40mm less than the 6.70 at least...

Edit - which can't be right...

Cheers Edou. Think I'd better have some accurate check dimensions for overall lengths of SD1,5+6 - Top bit of SD1 is 0.7mm different in length to the original measurement (6.7 vs 6.0), which has made me nervous about the the other lengths.

Add BB6 to the list of dimensional requirement then if you please, & do you think it would be ok with a machine thread rather than self-tapping? (If so, what size?)

Yep, new caliper and the sticky out bit at the bottom of it isn't level.
Setting to zero at the correct point led to several measurements of 6.04mm.
Sorry 'bout that...

eddrick wrote:

do you think it would be ok with a machine thread rather than self-tapping?

I'd be okay with it myself, haven't had a bad experience with putting machine threaded screws into plastic.
But I'm not sure everybody would want to do that to their J parts...
Measurements are coming up in any case.

Cool ta

Mo' measurements :

SD1 overall length : 17.04mm
SD1 diameter base : 8.92
SD1 diameter middle : 6.96

SD5 length : 29.90
SD5 base : 8.92
SD5 top : 6.96

SD6 length : 22.95
SD6 base : 8.92
SD6 top : 6.96

And mo' to come...

Nice drawing kit there, waterbok

I had my grandfathers drafting slope for a while, but it was a real behemoth & needed it's own room - for the use it got it had to go

I think my favourite bit of kit though was a "Unique Flexicurve" - basically a rubber covered spring that would bend to shape, so like having a set of french curves but with the added bonus you could bend into a _n_ shape & wear it on your head and look like you'd had an accident while rock blasting ... TBH that's pretty much all I remember of several years of being "taught" technical drawing at school

BB6

Gotta say it was a bit hard to measure well...

Width of the hex side to side : 6.95mm
Thread at it's widest : 3.50mm
Hole in the top has the leave enough room to clamp down a 2mm thick FRP battery plate with a body clip.





Edit - width of the top : 4.03mm

He's a good boy that Edou, not like that naughty Waterbok!

Ok then, that should just leave dimensions required for spacer SD4 then please,
& I'd also better have the core diameter of the thread of BB6 - If I was cunning, I could put a machine thread on it that wouldn't prevent use of the proper thing if it were to be replaced at a later date, I'm guessing the core will be 2mm, so an M3 should be ok to convince into the hole without destroying the ability to still use a genuine BB6 at a later date.

So in summary, I'm planning to do a "kit" of 2xSD1, 2xSD4, 2x SD5, 2xSD6 & some BB6 (How many BB6?). Is that right, or have I missed anything?

Naughty wb took off for most of the weekend...

If I may ask - why add 2x SD4 (the front shock tower spacers)?
Of BB6, 4 pieces would be needed...
And the alloy J12 would be great of course.

Measurements are coming up...