Steering Rack Bushes

Post by **MarinaCoupe** » Mon Aug 08, 2011 8:58 pm

Craig

I try to keep one or two, so if you need one at some point come back to me.

crashbang · Post by **crashbang** » Tue Aug 09, 2011 9:05 am

not shaw if i am keeping the rack still looking for quick rack or something better

jiversteve · Post by **jiversteve** » Tue Aug 09, 2011 1:20 pm

For quicker steering, have you considered shortening the Steering arms (part FAM 1378 and FAM 1379).
These arms connect the upright to the rack. By shortening them it has the same effect as a quick rack.
It used to be done by a company called Fortune Engineering for the trials Marlins but I think the owner has retired.

Post by **MarinaCoupe** » Tue Aug 09, 2011 8:35 pm

Wouldn't you then have to extend the rack arms to compensate?

---
- Sent using Tapatalk

ClaytonSpeed · Post by **ClaytonSpeed** » Tue Aug 09, 2011 8:56 pm

MarinaCoupe wrote:Wouldn't you then have to extend the rack arms to compensate?

---
- Sent using Tapatalk

Or adjust the tracking from the track rods??

Sent from my iPhone using Tapatalk

Kilroy · Post by **Kilroy** » Wed Aug 10, 2011 9:53 pm

Shortening the arms as Jiversteve mentions will increase the amount of movement of the uprights for the same amount of travel in the rack.
Yes - the alignment would need adjusting, but not much. There would be enough available in the standard setup.
This mod would increase the loading on the rack however - so the steering would be heavier.
I suppose a quick rack might have the same effect.

Good ideas on here..

locost_bryan · Post by **locost_bryan** » Fri Aug 12, 2011 12:06 am

If I understand correctly, a quick rack only changes the steering ratio, but doesn't affect the steering geometry. So, fewer turns lock to lock, requiring more effort from the driver.

Shortening the steering arms will affect the geometry, possibly causing issues with bump steer. Should also reduce the turning circle, as the arms will pivot further before the rack hits it's limits. Will require more effort from the driver. iirc possibly illegal in NZ and Aus, or at least requires testing/examination by a certifying engineer.

jiversteve · Post by **jiversteve** » Fri Aug 12, 2011 10:40 am

I have done a separate post on the subject, I will comment there.

stoterstangen 90 · Post by **stoterstangen 90** » Thu Jul 24, 2014 4:57 pm

Chris, are these bushes still availeble?

I will come to Peterbourogh with the brown Ital.

Greetings Pytrik Heideman, The Netherlands.

Post by **MarinaCoupe** » Thu Jul 24, 2014 5:38 pm

Hi Pitrik

I have one available and can bring to Peterborough for you.

Chris

stoterstangen 90 · Post by **stoterstangen 90** » Thu Jul 24, 2014 8:35 pm

That's nice.

See you in Pbourough

Fast Marina Magazine