Steering rack brackets
 

Good evening Gents,

today I have made a bit of progress on the suspension and whilst working on the front end my mind wandered, as it does when you get to my age, doesn't it Ayjay.
It wandered to the world of the steering rack bracket, and how flimsy it looks so am thinking of coming up with a different idea.

Now to my question, is there an optimum hight from the bottom face of the chassis to the centre of the rack, I couldn't find anything in the book and I have left it over in the workshop so won't get to it until tomorrow.

kind regards

Arfon

95 mm, see drawing on page 75.

Thanks Alga

Any reason why box section can't be used ? As long as the outside diameter is the same, surely this will strengthen up the front rack bracket considerably ? I know that it will take longer to fabricate, but as long as the wall in the box is sufficient, it should work champion.

Steering rack
 

Have you seen this, Steering Rack Support Revised Drawing in book amendments.
http://www.haynesroadster.pwp.blueyo...ng_support.pdf

Fold a 3mm steel sheet to the same angle as drawing and weld front and rear.

I was thinking of using Box section and having it in the same orientation as Janne's and either drill and tap some holes or mill some slots to bolt through

Arfon

Two 5mm plates with bolt holes under the rack mounting fixes the flimsy aspect of it.

You'd have to incorporate crush tubes into the box section. Combine it with slots for adjustment, and it does not sound so easy at all. The alternative is to cut the tubes open and clamp to a single wall of the box section.

An alternative is to fill in the triangular sides, as Mopple has designed in his chassis Solidworks model: http://grabcad.com/library/haynes-roadster-chassis
The drawback of this approach is slightly impeded access to the clamp nuts.
Mopple's design is folded out of a single laser cut piece of 3 mm plate, if I recall correctly.

Hi,

I don't know if someone else here is using Madis (Mopple)'s modified steering rack support design, but I do, so I thought I could share some pictures.


S-rack frame par Voucht71, sur Flickr


2011-10-09_17-40-33 par Voucht71, sur Flickr

I ordered the assembly directly from him (at that time, I paid 13 euros + shipment!), it consists of 4 parts : 2 sides, 1 top (90° bent plate), 1 cross plate.


2011-09-29_15-14-50 par Voucht71, sur Flickr

I'm so glad I am using this revised design, it feels much safer than the book's design.

Here is the page of my blog about the fitting of this part on my chassis, with pictures.
http://vouchtroadster.blogspot.se/20...ring-rack.html

Hope this can help :)

I am missing something here, why the crush tubes, the slotting is easy just not sure why the crush tubes.

Arfon

I mean, you cannot just drill a hole through the box section and put a bolt through it, the tube will deform under bolt pressure and the rack will not be fixed solidly enough.

That would all depend on the wall thickness of the box section and the animal swinging on the spanners

Arfon

Hi Sylvain, I have had another look at the steering rack brackets that you have had and I like the design, do you have any contact details for the guy that made them

Arfon

Hi,
I supplied those parts to Sylvain.
The drawings for those parts can be downloaded from here https://www.dropbox.com/s/koet0tnodl...20moppl e.zip. Any adequately equipped engineering shop can fabricate them.
Also I could supply them, but minimum batch size would be 10 sets.

I wouldn't mind a set of those if anyone can supply.
Maybe get a group buy going?

Depending on cost I could be up for a set of them for my next build when I get my act together and get started again lol

hi,
Sorry I saw this post a bit late. Yes, Madis (mopple) supplied me this steering rack bracket, and it is top notch. If you can find more people interested in it, it is really worth it, as the price was OK too if I remember well.

By the way Madis, how is your build going?

Hi Madis, thanks for the drawing, I will see if there are any engineering companies in the area that can produce them.

Kind regards

Arfon

Hi, a little update regards my version of steering rack brackets. I made an inquiry for 3 sets to a water cutting shop. Should get an answer from them at the beginning of new week. Will post the price for a set next week.

Regards,
Madis

I will keep an eye open for it

Arfon

Got a price for mentioned 3 sets. It's 30£ for bent set + postage.

But the postage is trickery as it's 10£ + 1 £ for every kg of package. 12 £ for one set or 14 £ for three sets. So it would be reasonable to post the sets together for 14 £ to one addressee and then hand them out locally. Stoneleigh maybe?

If anyone is interested, then post post to this thread.

Madis

Definitely me

Yeah me too definitely interested

Arfon

Me too I can share postage with shorty

OK gents, I will order 3 sets from water cutters. Will let you know when they are bent and ready for shipping.

No problem. If they are ready before Stoneleigh I can take them down or drop vmaxes on the way if you not going.
Mopple. Just let me know the total cost and where to send the payment.
Thanks

Madis,
Did you get my email? Please PM me if you come this week :)
Thanks.

When they are ready let me know payment details, shorty, would it be possible for me to arrange to collect mine from you at Stoneleigh, then it will make it easier all round rather than delivering all over the place. Hope i am not overstepping the mark

Arfon

Yeah that's fine. No problem at all

Your a star

Arfon

The brackets are done https://www.dropbox.com/s/qy0yh33002...2011.24.10.jpg, vmax1974, Shorty, TheArf please agree to whom I will send them and then I will PM you with payment details.

BR
Madis

Send mine to shorty and I will get them whenever I can not in any rush

I think the logical way would be to send them to shorty as he has agreed to bring them to stoneleigh, so i now need a way of paying you young sir, if you want to p.m. Me with the details i will get it sorted

Many thanks

Arfon

I'm happy to receive and sort out passing them on.

That's great mate

Arfon

Hi Madis, you should have a p.m.

Arfon

Hi Madis,

can you check your pm's again

Arfon

Shorty, TheArf and vmax1974 please check your PM-s.
Sorry about the triple post, it was some kind of software glitch.

Thanks very much.
If you guys could let me know your contact details to arrange passing them on.
I will be going to Stoneleigh on the 4th (Sunday) but I will be staying in a hotel so will still be around on the Monday morning if you weren't going till Monday.

Hi Shorty, pm sent with contact phone number

Arfon