Chassis Alignment. Toe in and Lean out.
Oct 22, 2022 20:57:31 GMT 10
michaelk and danny1965 like this
Post by haitch on Oct 22, 2022 20:57:31 GMT 10
I decided more out of curiosity to evaluate the chassis setup of my 2022 GU 2WD. I understand the toe in should be between 3 and 8mm. I made some alignment bars yesterday and tried them out today. Before measurements were taken I also leveled the outfit.
The measurement from pusher tyre patch to sidecar wheel tyre patch was 0.1 degree of level. I also checked the Lean out by attaching an electronic device to the rear disc. This indicated a lean out of 1.2 degrees. About midway between the suggested factory spec of 0-2 degrees.
I note the "Toe-in" for the 2022 GU 2WD should be between 3mm and 8mm.
My measurements are as follows.
Front: measured with the bar hard up to the bottom of the front disc and front and rear tyre contact points engaged. tape measured directly under the axle line and across to the sidecar beam .......... 1226mm.
Rear : Measured with the bar directly under the rear axle. Taped from that point across to the sidecar beam. At as close to a right angle as was the front. It measured ..............1252mm.
This gives me a Toe In of 36mm Nowhere near the 3 to 8mm specified.
I have looked at Davids from Ural, take on the Ural Youtube channel, and note his process on the rear includes measuring through the spokes to a point back near the SC rim and extending the tape back to the rear of the Pusher back tyre. This would make the disparity even larger.
I also note the AU User manual says " If it pulls to the right , increase the toe-in, If it pulls to the left, decrease the toe-in." On checking the US manual, it says exactly the same.
The chair is on the opposite side and they drive on the other side. (Camber is opposite) I struggle to reconcile these instructions.
Tyre pressures are as per spec. Shock preload on the Sidecar is +2. Pusher and front lowest preload.
At this point, 2000Km I do not experience any adverse tyre wear,
I did make a video. Hopefully I will get it up to support things.
Thanks in advance.
Here is the Video clip. .
The measurement from pusher tyre patch to sidecar wheel tyre patch was 0.1 degree of level. I also checked the Lean out by attaching an electronic device to the rear disc. This indicated a lean out of 1.2 degrees. About midway between the suggested factory spec of 0-2 degrees.
I note the "Toe-in" for the 2022 GU 2WD should be between 3mm and 8mm.
My measurements are as follows.
Front: measured with the bar hard up to the bottom of the front disc and front and rear tyre contact points engaged. tape measured directly under the axle line and across to the sidecar beam .......... 1226mm.
Rear : Measured with the bar directly under the rear axle. Taped from that point across to the sidecar beam. At as close to a right angle as was the front. It measured ..............1252mm.
This gives me a Toe In of 36mm Nowhere near the 3 to 8mm specified.
I have looked at Davids from Ural, take on the Ural Youtube channel, and note his process on the rear includes measuring through the spokes to a point back near the SC rim and extending the tape back to the rear of the Pusher back tyre. This would make the disparity even larger.
I also note the AU User manual says " If it pulls to the right , increase the toe-in, If it pulls to the left, decrease the toe-in." On checking the US manual, it says exactly the same.
The chair is on the opposite side and they drive on the other side. (Camber is opposite) I struggle to reconcile these instructions.
Tyre pressures are as per spec. Shock preload on the Sidecar is +2. Pusher and front lowest preload.
At this point, 2000Km I do not experience any adverse tyre wear,
I did make a video. Hopefully I will get it up to support things.
Thanks in advance.
Here is the Video clip. .