Steering rack supports
 

Hi just a quick question.
Should the steering rack supports cp19 & cp20 be 285mm apart or 288mm.
The book states the mounting hole centres should be 258mm apart but if you add the differece from either side to this, 30mm you get 288mm from edge to edge, not 285mm.

Have seen this asked before but didn't see a definate answer.

Thanks Chris

they need to be placed so that they are lined up with your steering column & also so that the column goes thru the bearing support plate (CP16) centrally, hope that makes sense??? :eek: ;)

andy

DOH, silly me :o :o i thought we were talking about the steering WHEEL supports CP15,s.. sooooorrrry :D

long day & an all that.

andy

right i,ll try again :o

if i remember correctly, when i welded in these plates i had a few mm over which i think came from the measurement 288mm,
so if you have your steering rack available make sure the rack fits into the support & that you can get the fixing bolts thru, i had to widen the slots a little & grind a bit off the edge of the supports to make it fit snugly.

hope thats better info than my first attemp, :eek: :D

andy

Have you done a search for the book ammendments, I sure Chris did a new drawing for this. The only problem I remember was the angles not add up. I did not check the whole centres, but the plates can only be the same distance apart as the diagonal brace.

Thanks for your reply, I haven't got a rack yet which is a bit of a pain else I'd of measured between the mounting holes. The diagonal brace cp21 that goes between them is 228 I noticed, if you add 60mm, the width of both cp19 & cp20 plates, you would also get an edge to edge width of 288mm.
Looks like the book migth be wrong and it should be 288mm, guess i'll be repositioning them tomorrow.

Spikhaus, was yours ok using the standard brace width of 228 on the diagonal?

P.S the steel bush inner tubes I bought from you were great.

Looks like we all tumble on the same mistakes, maybe I will compile a list of common mistakes for the new builders to use as check list. Its all part of the learning curve and building what is a new an improved chassis. I will add this dimension to my book that now has some much pen and grinding dust on, I can hardly see the drawings.:D

Still, I also hold it as my build Bible as it has given a lot of pleasure and consumed my life for the last year. Maybe one day I will get round to reading it. By trade, drawings and NBS spec are everything!

I take it you agree they should probably be 288mm apart? glad i only tacked them lightly on one side.

I almost postive this is correct. I am going to have to go and calulate the geometry now or I will not sleep tonight!