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View Full Version : What the hell is rose jointing?



Anonymous
19-07-00, 06:37 PM
i just want to know what rose jointing is thats all, as i see it in lots of ads and stuff.

cheers lads and lasses

stuart

Anonymous
20-07-00, 09:26 AM
Rose jointing is basicaly the replacment of rubber bushes with spherical joints as they are correctly named, rose joint is a trade mark of the rose bearing co. The idea been that a spherical bearing has no compliance so suspension geometry remains exactly where you set it except for the bodyshell deflecting which they all do.

Anonymous
20-07-00, 09:58 AM
ahhhhh cheers mate

Anonymous
20-07-00, 11:09 AM
In plain english. On a normal car where the suspension bolts to the chassis rubber bushes are used, this is probably due to cost and noise suppresion. These joints work fine however rubber bushes flex when under load causing your track control arms tie bars etc.. to twist and move. A rose joint is basically a ball joint and usually has a male or female thread attached to it. Rose jointing is basically replacing the rubber pivots with these high quality rose joints, the result is more precise handling and staering. Because rose joints are have a threaded end you can also use them to alter the position(length) of the suspension, such as the camber angle if you have lowered the car. You can buy uprated rose jointed tie bars and tie bar brackets and rose jointed track control arms for the nova from tuners such as ASW motorsport, Regal, or see http://www.tuning.co.uk/nova/nova_comp/ft_susp.htm. these are normally used on 2.0 engine conversions to reduce torque steer (track control arms) and improve turn in (lowered tie bar brackets) but will improve the handling of a smaller engine nova.

Anonymous
20-07-00, 04:09 PM
Track control arms cannot be used to reduce torque steer. Torque steer is caused by having different length driveshafts,fitting different diameter driveshafts can help reduce it and the only way to cure it is to fit equal length driveshafts. Lowered tie bar brackets are normaly used to reduce dive under braking, nothing i've ever read has suggested that this will improve turn in.

Anonymous
20-07-00, 05:04 PM
The rose jointed track control arm is also strengthened this prevents it flexing under hard acceleration keeping the wheels where they should be. This doesn't actually reduce torque steer, but it does reduce reduce wheelspin. The turn in is not improved by the rose joint itself but by the fact that you can now adjust the castor angle.