Axle tramp - lsd?
Discussion
Hello,
I've taken advantage of the slippery weather to investigate my car's grip from a standing start and practice balancing that against the slightly torque-shy power delivery. It seems to suffer a bit of axle tramp on anything more than mild wheelspin and I'm a bit surprised at this. I've only seen axle tramp occur before on a racing Mustang, and I assumed it was because they have basic and stiff suspension. My car on the other hand ("Cossie Merc"
has 5-link suspension that's comparatively soft. So it was rather a surprise to discover it does something so unruly, and it feels like it's going to break something!
Is it because it has LSD? It's only something like 15% LSD, but additionally it has "ASD", which means when it detects wheelspin it hydraulically locks the diff up, up to as much as 100% (although I'm not convinced the diff might be a bit worn out - any way of telling?). Could this ASD be the cause? Is it likely to break something when it happens?
I've taken advantage of the slippery weather to investigate my car's grip from a standing start and practice balancing that against the slightly torque-shy power delivery. It seems to suffer a bit of axle tramp on anything more than mild wheelspin and I'm a bit surprised at this. I've only seen axle tramp occur before on a racing Mustang, and I assumed it was because they have basic and stiff suspension. My car on the other hand ("Cossie Merc"
has 5-link suspension that's comparatively soft. So it was rather a surprise to discover it does something so unruly, and it feels like it's going to break something!Is it because it has LSD? It's only something like 15% LSD, but additionally it has "ASD", which means when it detects wheelspin it hydraulically locks the diff up, up to as much as 100% (although I'm not convinced the diff might be a bit worn out - any way of telling?). Could this ASD be the cause? Is it likely to break something when it happens?
High speed filming of suspension under load sounds interesting! I've no axle tramp under braking luckily.
You've just made me recall that the back end can sometimes feel a little bit wayward under hard acceleration in low gears, as if the suspension is wandering a little. It's not always noticeable but it's the first powerful rear driver I've owned so maybe it's normal. I've had it looked over and no obviously worn bushes or anything were noticed. The rear suspension is self-levelling with struts instead of dampers and the damping done by spheres, so maybe a problem lies here? It doesn't ride stiffly which I thought was the sign of worn/failed SLS?
I track dayed it and it seemed perfectly fine (until a crappy Pirelli out).
You've just made me recall that the back end can sometimes feel a little bit wayward under hard acceleration in low gears, as if the suspension is wandering a little. It's not always noticeable but it's the first powerful rear driver I've owned so maybe it's normal. I've had it looked over and no obviously worn bushes or anything were noticed. The rear suspension is self-levelling with struts instead of dampers and the damping done by spheres, so maybe a problem lies here? It doesn't ride stiffly which I thought was the sign of worn/failed SLS?
I track dayed it and it seemed perfectly fine (until a crappy Pirelli out).
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