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Technical help

tramp....

Started by Tempest · 20 May 2005 · 52 replies

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redjetvltArchived member
my mate is getting the same problem on his stock s15 200sx (it has LSD)? Is that normal?
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TempestArchived member
yeah, BUT it does it in the WET. that i never got... the tyres i have on it now (235's) are a better quality tyre than i had on it and a lot softer = more traction. but they dont' tramp...
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LukeVLArchived member
What the car did was feel like one tyre would grip and jump forward then the other side would do it and it wouldn't stop- feels horrible like when you do a skid in a Front wheel drive car. I think it all comes down to those wheels/tyres. Oh and no need to thank me Grant- I quite enjoyed doing phat skids in your car!
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TempestArchived member
yeah, those 205's are going back on soonish i think.... 2nd gearies on a thurs night!
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redjetvltArchived member
So would my mate have the same problem?
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LukeVLArchived member
i have seen more than one 200sx tramp. Couldn't tell you why. Maybe tyre related again. Sidewall construction? Don't know.
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NZ VLCTArchived member
good to hear its all go again tyres can do some weird things
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david85dcArchived member
i dont know wtf to do but it woudl be good to know if someone could get a detroit locker in their vl. damn it must be tuff Some original photos have not been recovered yet.
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StockyMcStockArchived member
yeah how did you do it grant? is it just a replacement centre? or a whole new diff?
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TempestArchived member
I'm working on it... Some original photos have not been recovered yet.
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TempestArchived member
replacement centre. original axle's, everything.
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LukeVLArchived member
Just a borgy replacement centre purchased off some circuit guru... Goes well and heaps better than the LSD. I can't stand BW cone LSDs, almost as much as i can't stand spools. Its heaps less predictable now and more willing to sliiiide. Some original photos have not been recovered yet.
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TempestArchived member
i think you mean MORE predictable... and does tighter doughies.....
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StockyMcStockArchived member
i don't know much about detroit lockers, how do they differ from, say, a minispool? i reckon if someone could shoehorn a hilux air-locked diff into a VL that'd be sweet so you could turn it on and off with a switch.
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turbolukeArchived member
they lock under acceleration only basicly it means you can do a u turn without cringing as your diff tries to separate from the chassis
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exchaserArchived member
Quote: Its heaps less predictable now and more willing to sliiiide. More predictable or less predictable.. i would imagee that it would be less predictable... as u don thave full control as to when it decides to lock... much the same as u have no control over whether an lsd decides to single wheel half way through somethin hectic ? Do u get a 'feel' for it luke after a while ? or is it just a bit of.. boot it and just hope it locks when u really want it to ? The best thing about a minispool to me is the fact that u always know ur goin to have locked 2 wheels ALL the time.. no ifs no buts.. make me feel a bit more comfortable :P
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turbolukeArchived member
the detroit locks under very light load and is locked way before any wheelspin occurs so it should feel the same until you back off i havent driven grants at the limits of cornering adhesion so i cannot comment on mid corner decelleration behaviour. I imagine a full spool would want to understeer a lot more in this case
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NZ VLCTArchived member
The way a detroit locker works is: i'm not very good at explaining things, but........ if a diff has a minispool for eg. and the drive is being transfered to both wheels equally, lets call that 100% drive. A DL diff centre puts 100% drive to both wheels, BUT at any stage, one wheel can 'over run' the driven wheel - so under power, both turn like its locked, because one wheel can never turn faster under these conditions, but when you are coasting or decelerating and go round a turn, the inside wheel is at 100% drive speed and the outer wheel can 'over-run' the inner due to it having to cover more distance that the inside (driven) wheel....... so basically the slowest wheel will be at drive speed and never slower than this and one can go faster to cover more ground. hope that makes sense Cheers Brent
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StockyMcStockArchived member
good explanation, i understand it now. not a bad idea, but i've never driven anything like that so you'd wanna hope it wasn't a bit funky like grant is saying :O
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turbolukeArchived member
good explanation brent in practice it works a little better than a perfect LSD will, ie locks earlier, always gives equal drive to each wheel but its biggest advantage is that it doesnt wear out like an LSD does as it physically locks together
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