Originally Posted by
K.Copeland
Picked up a used b4.1 and was amazed at the amount of play in the suspension. And, after doing a search on here, realized I'm not the only one complaining about it. So, I made up some new hardened hinge pins.
The hinge pins I made up are .0015 larger than the stockers and are a much better fit for the arms. They don't eliminate all of the play ( there is still some from the aluminum hub and bearing fit) but tightened things up quite considerably.
Concerning the bearing to aluminum hub bearing fit, I would like to see something like the 1/8 onroad guys have. They use delrin sleeves between the bearing and hubs to eliminate the play and vibration.
If anyone is interested in a full hinge pin set for this car, send me a pm.
I have noticed that biggest amount of play seems to be in the front a-arm inner hingepin holes and front suspension mount. The stock ball cups have some slop as well. Another issue for me is the front aluminum brace seems to come loose because the screws for it do not have the holding power.