Xray T4 '13
#3691
Tech Elite
iTrader: (72)
Guys, what would your input be for a traction roll issue I've got on a high traction carpet? If I only sauce the inside half of the tire I don't traction roll but I'm about .2-.3 seconds off my pace due to slight push I get in the infield. I've got the carpet setup on it except I have the +.75 rear arm mounts. I did this to try to get the car to rotate more while using 1/2 front tire sauce but I'm still a bit off the pace. I was thinking of maybe going to a 2000 cst diff oil from the 1000 to get it to rotate more and then half the front tire being sauced would be ok. I also reduced rear droop from 5 to 6 as I noticed I was lifting the rear inside tire when cornering. That helped a tad and the rear tire seems to stay planted but I'd like to resolve this traction roll problem. This is in vta at a 1550g race weight.
Thanks much
Dave
Thanks much
Dave
#3692
If anyone is interested I have my new in the box T4 for sale. Asking $475. PM for pics if interested.
#3693
Tech Rookie
VTEC? I thought that was something Honda had lol.
#3694
Guys, what would your input be for a traction roll issue I've got on a high traction carpet? If I only sauce the inside half of the tire I don't traction roll but I'm about .2-.3 seconds off my pace due to slight push I get in the infield. I've got the carpet setup on it except I have the +.75 rear arm mounts. I did this to try to get the car to rotate more while using 1/2 front tire sauce but I'm still a bit off the pace. I was thinking of maybe going to a 2000 cst diff oil from the 1000 to get it to rotate more and then half the front tire being sauced would be ok. I also reduced rear droop from 5 to 6 as I noticed I was lifting the rear inside tire when cornering. That helped a tad and the rear tire seems to stay planted but I'd like to resolve this traction roll problem. This is in vta at a 1550g race weight.
Thanks much
Dave
Thanks much
Dave
#3696
Tech Master
iTrader: (10)
Guys, what would your input be for a traction roll issue I've got on a high traction carpet? If I only sauce the inside half of the tire I don't traction roll but I'm about .2-.3 seconds off my pace due to slight push I get in the infield. I've got the carpet setup on it except I have the +.75 rear arm mounts. I did this to try to get the car to rotate more while using 1/2 front tire sauce but I'm still a bit off the pace. I was thinking of maybe going to a 2000 cst diff oil from the 1000 to get it to rotate more and then half the front tire being sauced would be ok. I also reduced rear droop from 5 to 6 as I noticed I was lifting the rear inside tire when cornering. That helped a tad and the rear tire seems to stay planted but I'd like to resolve this traction roll problem. This is in vta at a 1550g race weight.
Thanks much
Dave
Thanks much
Dave
#3697
Tech Master
iTrader: (3)
Join Date: Nov 2001
Location: Land of high taxes and bad football
Posts: 1,807
Trader Rating: 3 (100%+)
Guys, what would your input be for a traction roll issue I've got on a high traction carpet? If I only sauce the inside half of the tire I don't traction roll but I'm about .2-.3 seconds off my pace due to slight push I get in the infield. I've got the carpet setup on it except I have the +.75 rear arm mounts. I did this to try to get the car to rotate more while using 1/2 front tire sauce but I'm still a bit off the pace. I was thinking of maybe going to a 2000 cst diff oil from the 1000 to get it to rotate more and then half the front tire being sauced would be ok. I also reduced rear droop from 5 to 6 as I noticed I was lifting the rear inside tire when cornering. That helped a tad and the rear tire seems to stay planted but I'd like to resolve this traction roll problem. This is in vta at a 1550g race weight.
Thanks much
Dave
Thanks much
Dave
Are you having traction roll problems at corner entry, thru the corner, or off the corner?
#3698
but its quite bumpy,i dont use any shims on the rear inner links just 4mm on the upright
#3699
Tech Apprentice
Hey guys,
I am totally lost setup-wise. I hope you can help me.
Im running on a small and rather tight asphalt track with low to medium traction.
My setup:
Base asphalt exept for
1mm rollcenter spacers on the bulkheads instead of 2 mm (front and rear)
rear shocks in hole 3
0,5 degrees of arm sweep front
Protoform Mazda Speed 6 body (LTCR already ordered)
Ride Re32
17,5t boosted or 10,5t
My problem:
I just dont have enough traction.
Loose rear end on corner exit, massive understeer through fast corners, slight understeer in medium speed corners and massive understeer in slow corners entry to middle.
I also drove a Tamiya teamdriver's car and his 417 v5 was just that much better so its not the trackconditions in general. He didn't even use the raceberry conversion kit
Tried a lot of stuff already, nothing really worked. So please help me. Any ideas are welcome
Regards,
David
I am totally lost setup-wise. I hope you can help me.
Im running on a small and rather tight asphalt track with low to medium traction.
My setup:
Base asphalt exept for
1mm rollcenter spacers on the bulkheads instead of 2 mm (front and rear)
rear shocks in hole 3
0,5 degrees of arm sweep front
Protoform Mazda Speed 6 body (LTCR already ordered)
Ride Re32
17,5t boosted or 10,5t
My problem:
I just dont have enough traction.
Loose rear end on corner exit, massive understeer through fast corners, slight understeer in medium speed corners and massive understeer in slow corners entry to middle.
I also drove a Tamiya teamdriver's car and his 417 v5 was just that much better so its not the trackconditions in general. He didn't even use the raceberry conversion kit
Tried a lot of stuff already, nothing really worked. So please help me. Any ideas are welcome
Regards,
David
If you still have problems try make the car softer and make it roll more.
http://forum.teamxray.com/xform/inde...D=361&setup=t4
I ran the 17.5 blinky class that race.
#3700
Try my aoc setup. It was a super technical track. Adjust rear difr oil after grip level.
If you still have problems try make the car softer and make it roll more.
http://forum.teamxray.com/xform/inde...D=361&setup=t4
I ran the 17.5 blinky class that race.
If you still have problems try make the car softer and make it roll more.
http://forum.teamxray.com/xform/inde...D=361&setup=t4
I ran the 17.5 blinky class that race.
#3701
Tech Elite
iTrader: (72)
Sorry guys. Traction roll entering the corner. I have the kit 350cst shock oil. 2.7 front and 2.3-2.6 rear springs. I have attached my setup but it is the kit carpet setup w/ a few changes. Mainly rear diff height, rear diff oil, rear roll center blocks and a bit less rear droop. Saucing entire front tire nets me much faster laps but I get quick traction rolls on occasion so I've been saucing only 1/2 of the front tire and eating the .1-.2 a lap knowing I can at least drive the car hard w/o traction roll. I also tried 3/4 front tire sauce and it still traction rolled.
Dave
Dave
Last edited by TT_Vert; 05-23-2013 at 12:43 PM.
#3702
Tech Elite
iTrader: (44)
Sorry guys. Traction roll entering the corner. I have the kit 350cst shock oil. 2.7 front and 2.3-2.6 rear springs. I have attached my setup but it is the kit carpet setup w/ a few changes. Mainly rear diff height, rear diff oil, rear roll center blocks and a bit less rear droop. Saucing entire front tire nets me much faster laps but I get quick traction rolls on occasion so I've been saucing only 1/2 of the front tire and eating the .1-.2 a lap knowing I can at least drive the car hard w/o traction roll. I also tried 3/4 front tire sauce and it still traction rolled.
Dave
Dave
1 - lower your ride height from 5.5 to 5.2
2 - lengthen your camber links 1 hole, currently you are in the shortest hole. Increase the length.
and / or remove 1mm from the rear outside camber link / remove 1mm from the front inside (on the bulk head) camber link.
3 - Reduce your spring rate 1 step in the front (dummy down the response rate of the car)
#3703
Tech Elite
iTrader: (72)
You can try the following:
1 - lower your ride height from 5.5 to 5.2
2 - lengthen your camber links 1 hole, currently you are in the shortest hole. Increase the length.
and / or remove 1mm from the rear outside camber link / remove 1mm from the front inside (on the bulk head) camber link.
3 - Reduce your spring rate 1 step in the front (dummy down the response rate of the car)
1 - lower your ride height from 5.5 to 5.2
2 - lengthen your camber links 1 hole, currently you are in the shortest hole. Increase the length.
and / or remove 1mm from the rear outside camber link / remove 1mm from the front inside (on the bulk head) camber link.
3 - Reduce your spring rate 1 step in the front (dummy down the response rate of the car)
1. Lower front/rear ride height or just front? I have a bit of a bumpy track which is why I was at 5.5 but I can try to lower.
2. Is this in refence to just the front camber link?
3. So you recommend going softer in front? Wouldn't that just cause more roll or is your thinking that it'll roll further before it traction rolls?
Thanks for the input/clarification!!
#3704
Sorry guys. Traction roll entering the corner. I have the kit 350cst shock oil. 2.7 front and 2.3-2.6 rear springs. I have attached my setup but it is the kit carpet setup w/ a few changes. Mainly rear diff height, rear diff oil, rear roll center blocks and a bit less rear droop. Saucing entire front tire nets me much faster laps but I get quick traction rolls on occasion so I've been saucing only 1/2 of the front tire and eating the .1-.2 a lap knowing I can at least drive the car hard w/o traction roll. I also tried 3/4 front tire sauce and it still traction rolled.
Dave
Dave
Have you tried a softer front spring or even the progressives?
#3705
Tech Elite
iTrader: (72)
I've not tried a softer spring as I thought more roll would perpetuate the problem. Perhaps I'm looking at this wrong. What I was trying to do was free up the rear a bit so it'd rotate at corner entry a bit rather than want to traction roll. Raised rear roll center w/ arms to do that. not sure if that was the best way.
Dave