AdamR Posted October 22, 2018 Share Posted October 22, 2018 Will have a proper look when back but that seems quite a lot to me. Link to comment Share on other sites More sharing options...
corsechris Posted October 22, 2018 Share Posted October 22, 2018 I was being diplomatic for a change. That said, it's a lot better than a standard Marcos Mantula..... It was a long time ago, but I think I got that down to around 1/4 degree from end to end. Most of the error was at the end of the droop and it was far from linear. Reminds me I really should try this out on my current project and see where it's at. Should have done it while it was still sat on the built table actually, but that ship has sailed. Link to comment Share on other sites More sharing options...
KugaWestie Posted October 22, 2018 Author Share Posted October 22, 2018 Looking at it again I think the rack needs to move forward to straighten out the arms from the gaitor to the track rod end. The eagle eyed may also have noticed that I have reverted to standard steering arms bolted to the uprights. I think the height of the rack is right as you can see I have laid the bracket that I cut off on top of the rack. The bracket was for the supplied rack that came with the kit, but I have no idea what rack that was! Link to comment Share on other sites More sharing options...
Mark (smokey mow) Posted October 22, 2018 Share Posted October 22, 2018 Gary as a comparison these are the figures I got for my Westfields. Link to comment Share on other sites More sharing options...
AdamR Posted October 23, 2018 Share Posted October 23, 2018 I make that 1.5 degrees on that side, so 3 deg on the axle (which would be 18mm with 13" wheels!). Rather a lot - low single figures in mm will be more like it IMO. Definitely try moving the rack forward (even if it's not properly fixed) and repeat the same test Link to comment Share on other sites More sharing options...
CL290005 Posted October 23, 2018 Share Posted October 23, 2018 I've been giving Gary's set ups bit of thought, but this is confusing me the top and bottom wishbone fulcrums are not in the same plane so my thought is the top and bottom balljoints wont follow the same plane as the hub rises through its suspension travel, hence it will have built in bump steer, I'm not sure if I'm over thinking this , just not sure why a chassis design would adopt this? Any thoughts from those with more knowledge Link to comment Share on other sites More sharing options...
KugaWestie Posted October 26, 2018 Author Share Posted October 26, 2018 Ok, update on bump steer................. I packed the rack forwards using one washer on each fixing point then checking the plot each time until I ended up with this 6 washers per side Link to comment Share on other sites More sharing options...
KugaWestie Posted October 26, 2018 Author Share Posted October 26, 2018 The rack is almost straight now Link to comment Share on other sites More sharing options...
KugaWestie Posted October 26, 2018 Author Share Posted October 26, 2018 The result of the washer packing gave me this new plot on the wall. Blue pen Measurements starting from full droop (FD) right through 170mm of suspension travel, with X marking the spot at each measurement And here is the video through bump and then droop Hows that now fella's? @AdamR @corsechris Link to comment Share on other sites More sharing options...
AdamR Posted October 26, 2018 Share Posted October 26, 2018 Looks looooaaddss better, good work! Link to comment Share on other sites More sharing options...
KugaWestie Posted October 26, 2018 Author Share Posted October 26, 2018 Just now, AdamR said: Looks looooaaddss better, good work! Good enough? Link to comment Share on other sites More sharing options...
AdamR Posted October 26, 2018 Share Posted October 26, 2018 I would say so, gotta be well under half a degree total now? (As long as both sides are the same) Link to comment Share on other sites More sharing options...
KugaWestie Posted October 26, 2018 Author Share Posted October 26, 2018 2 minutes ago, AdamR said: I would say so, gotta be well under half a degree total now? (As long as both sides are the same) I have still got to check the other side, fingers crossed Link to comment Share on other sites More sharing options...
BenD Posted October 26, 2018 Share Posted October 26, 2018 Thanks heavens for that I was worried I was going to have to put the steering arms back to how they were Link to comment Share on other sites More sharing options...
corsechris Posted October 26, 2018 Share Posted October 26, 2018 Excellent result. Nice work. Link to comment Share on other sites More sharing options...
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