Tony Posted June 11, 2006 Report Share Posted June 11, 2006 wim is designed to help and educate in the Geometry field, so from these images can anyone suggest why these front tyres have worn in this fashion and what angle was responsible? Quote Link to comment Share on other sites More sharing options...
Jap Devil Posted June 11, 2006 Report Share Posted June 11, 2006 I would hazard a guess by saying that there is excess -ve camber plus the toe is skewed to one side? Quote Link to comment Share on other sites More sharing options...
Mat Posted June 11, 2006 Report Share Posted June 11, 2006 Toe out Quote Link to comment Share on other sites More sharing options...
Tony Posted June 11, 2006 Author Report Share Posted June 11, 2006 I would hazard a guess by saying that there is excess -ve camber plus the toe is skewed to one side? Yes Quote Link to comment Share on other sites More sharing options...
Jap Devil Posted June 11, 2006 Report Share Posted June 11, 2006 I would hazard a guess by saying that there is excess -ve camber plus the toe is skewed to one side? Yes Bugger me....I'm in the wrong job! Shame I stopped getting my hands dirty 10 years ago Quote Link to comment Share on other sites More sharing options...
Tony Posted June 11, 2006 Author Report Share Posted June 11, 2006 Toe out The KA was lowered by 25mm. As a result the camber position rested at -45 rather than the proscribed -18' . The wheel off-set and camber position resulted the tyre wear seen..... As Mat suggested the front toe would if measured also be incorrect, so the owner could blindly assume the wear was 100% due to the toe, the likes of Crap-fit would adjust the toe belaying the real reason 'Camber'. wim says: Be very wise, lowering the cars suspension is never without consequence. The benefits are massive but you should seek guidance prior to the modification..... wim can provide this! Quote Link to comment Share on other sites More sharing options...
m8tte Posted September 15, 2006 Report Share Posted September 15, 2006 I have a similar problem on a ford puma - only more rapid wear ie 500 miles Would adjusting the tracking futher toe in aleviate this or ?................... With the above..... Was the problem fixed and how or is it - beyond redemption?? Help! lol ps on standard suspension but same when i swap to and from the 17 inch wheels i also have (ps hi tony - yes it is me with the problem puma from a while back!) Quote Link to comment Share on other sites More sharing options...
Tony Posted September 15, 2006 Author Report Share Posted September 15, 2006 I have a similar problem on a ford puma - only more rapid wear ie 500 miles Would adjusting the tracking futher toe in aleviate this or ?................... With the above..... Was the problem fixed and how or is it - beyond redemption?? Help! lol ps on standard suspension but same when i swap to and from the 17 inch wheels i also have (ps hi tony - yes it is me with the problem puma from a while back!) Hello.... If i recall we had an issue with vibration and your car... am i correct? To the problem.... If as you say you are on standard suspension, then the reason for the wear will be wheel off-set or incorrect toe... Feed me more information to how and when during the cars evolution this wear happened.... In other words what happened between everything being ok and now Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 That's the result of only -45' camber? What was the toe? I plan on running 3 times that next alignment :S Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 That's the result of only -45' camber? What was the toe? I plan on running 3 times that next alignment :S From recollection about -1 degree. Remember this example is FWD front engined... A different lady indeed. Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 Ah well, i've 4 spare tyres sitting behind me and plenty of tread on the car at the moment. Tony, if i wanted to attempt to pull the toe in on my car myself can you remember roughly how many turns i'd need to get it something reasonable? This initial bite of understeer is annoying me and if it's the same on track i'm going to want to do something about it at the lunch break on track. Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 Ah well, i've 4 spare tyres sitting behind me and plenty of tread on the car at the moment. Tony, if i wanted to attempt to pull the toe in on my car myself can you remember roughly how many turns i'd need to get it something reasonable? This initial bite of understeer is annoying me and if it's the same on track i'm going to want to do something about it at the lunch break on track. Here at home i don't have the data for the actual position you have now? can you display it and what you want it to be. Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 I think we went from 45' in to 45' out. Worse comes to worse i'll jack the front of the car up and spin them in by a thread each. You'll love me for that Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 I think we went from 45' in to 45' out. Worse comes to worse i'll jack the front of the car up and spin them in by a thread each. You'll love me for that No those positions are wrong..... leave things for now and let me see what they actually are... once i know i can guide you remotely tomorrow.... How much toe in are you looking for? After thought are you racing tomorrow? Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 Not until the 1st. This print out is confusing me. The first print out i had we left the front to at... l: 0.7, r: 0.7, total 1.3 however the previous front data on the latest print out reads l: -1.7 r: 0.3, total -1.4 and the final present front data is l: -0.5, r: -0.3, total -0.7. (i liked total 1.3) Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 Not until the 1st. This print out is confusing me. The first print out i had we left the front to at... l: 0.7, r: 0.7, total 1.3 however the previous front data on the latest print out reads l: -1.7 r: 0.3, total -1.4 and the final present front data is l: -0.5, r: -0.3, total -0.7. (i liked total 1.3) The previous position was the consequence of fitting the polly's... then you commanded a final position of -.7 for testing purposes admittedly. Stock is +1.2mm total toe (.6mm) per side... Is +1.2 going to be sufficient? Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 Commanded?! We agreed it would be interesting to find out how it performs on track! I can't answer the question until i've tried it. Gut feeling from pushing on when road driving is i'm going to suffer understeer on turn in which i'm not a fan of. The 1st will give me the answer i desire. If it's too bad i'm just going to have to screw the track rod ends in a little each side and hope for the best! Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 Commanded?! We agreed it would be interesting to find out how it performs on track! I can't answer the question until i've tried it. Gut feeling from pushing on when road driving is i'm going to suffer understeer on turn in which i'm not a fan of. The 1st will give me the answer i desire. If it's too bad i'm just going to have to screw the track rod ends in a little each side and hope for the best! Command did not express exactly what i meant 'sorry'.. but i did have to fight you down with the amount of -toe, agreed? From memory your tie rod adjusts 3mm per revolution (fine thread 12mm diameter) If you tippex along the steering arm and track rod end then a visual reference for adjustment can be gauged.... personally i would set your car at 3... maybe 4mm +toe in. Your aggression and style suggests much more from the car... Increments of 10th's of millimetres will not satisfy your ambitions.... I feel Quote Link to comment Share on other sites More sharing options...
jon Posted September 18, 2006 Report Share Posted September 18, 2006 Ok, if things are horrible on the 1st i'll wind each side in by 3/4 turn and see what happens. Chances are i won't bother but it's good to have a backup. Quote Link to comment Share on other sites More sharing options...
Tony Posted September 18, 2006 Author Report Share Posted September 18, 2006 Ok, if things are horrible on the 1st i'll wind each side in by 3/4 turn and see what happens. Chances are i won't bother but it's good to have a backup. Mark the rods then you cannot fail.... if thing go tit's up then you can return the positions.... +4mm total i really feel is you to a tee Quote Link to comment Share on other sites More sharing options...
jon Posted September 19, 2006 Report Share Posted September 19, 2006 You're the boss Quote Link to comment Share on other sites More sharing options...
Tony Posted September 19, 2006 Author Report Share Posted September 19, 2006 You're the boss Not sure about that But i do indeed worry when you commit such a move..... along the lines of 'jons' on the track giving all with 'blind' toe positions ... Yes you do make me worry. Quote Link to comment Share on other sites More sharing options...
jon Posted September 20, 2006 Report Share Posted September 20, 2006 You know me Toni. Throw it in and worry about what happens later in the corner Quote Link to comment Share on other sites More sharing options...
Tony Posted September 21, 2006 Author Report Share Posted September 21, 2006 You know me Toni. Throw it in and worry about what happens later in the corner Staying on the corner seemingly is an advantage ..... and what's with the 'Toni' I'm not a Fem you know Quote Link to comment Share on other sites More sharing options...
jon Posted September 21, 2006 Report Share Posted September 21, 2006 But it was a Wednesday, isn't that the day you don a frock and have your hair and nails done? Oh yeah, Tuesdays. Quote Link to comment Share on other sites More sharing options...
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