12 replies to this topic

[Jim Daniels - FIG]

To many posts to look over.

If you have a setup question, ask me here and cc the post in a PM to me so I'm reminded.

[Glenn]

To many posts to look over.

If you have a setup question, ask me here and cc the post in a PM to me so I'm reminded.

RU NUTS

[Jim Daniels - FIG]

yup and my cell phone is insane so trying to answer here.

[Mike Collins]

JD usual answer.... Just hold the gas pedal down just a little bit longer :0

[cpdenis]

Delete

[Jay Lutz]

JD,

Did you ever post build details (ie a diary of sorts) for that black SM you were building with your son? I don't recall seeing any of that. Thanks, Jay

Also, didn't you also intend to do a dyno run guide?

[Danimal]

JD and fellow NB's, Been racing a 1.6 SM with mazdacomp and Torsen diff for about 5 years and use to be able to run at the front of the field...sold the car in 2010 to focus on the kids....but still did the 25 and some other races inbetween...just decided to get back into it ....and purchased a NB....I went through the NB and replaced any bent parts and allligned and corner balanced the car to my OLD 1.6 set-up (camber, caster and RH) on the new NB....went out to Infineon for the first debut of the NB and I get wheel spin in L and R corners...not enough rear grip....yes I am a little rusty but can't get the power down out of the corners.

The car is corner balanced 50/50, 1/16 toe out F, 0 toe R, -3.1 camber all around, full caster, RH aprox. 4.5 inch to pinch (2+ fingers of shock travel to bump stops all around). I did soften the R swaybar but still can go one side softer and raised the car one full turn that helped a little. I originally thought the wheel spin was a slipping clutch as the NB does not react to wheel spin like an NA.

Thank you to all the NB's that are willing to share

[Glenn]

JD and fellow NB's, Been racing a 1.6 SM with mazdacomp and Torsen diff for about 5 years and use to be able to run at the front of the field...sold the car in 2010 to focus on the kids....but still did the 25 and some other races inbetween...just decided to get back into it ....and purchased a NB....I went through the NB and replaced any bent parts and allligned and corner balanced the car to my OLD 1.6 set-up (camber, caster and RH) on the new NB....went out to Infineon for the first debut of the NB and I get wheel spin in L and R corners...not enough rear grip....yes I am a little rusty but can't get the power down out of the corners.

The car is corner balanced 50/50, 1/16 toe out F, 0 toe R, -3.1 camber all around, full caster, RH aprox. 4.5 inch to pinch (2+ fingers of shock travel to bump stops all around). I did soften the R swaybar but still can go one side softer and raised the car one full turn that helped a little. I originally thought the wheel spin was a slipping clutch as the NB does not react to wheel spin like an NA.

Thank you to all the NB's that are willing to share

Are you SURE it has a Torsen?

[Danimal]

YES IT HAS A TORSEN, I was so convinced that it was mechanical...I swapped the clutch and dif.......It doesn't make since to me that a NA set-up would be totally different from a NB....a little bit yes...........So since it can't be mechanical it has to be wheel spin....although it does not feel like it did in a NA....wheel spin in a corner should send the rear end sideways...the NB gets a little loose but mainly the RPMs jump up until I get out of the gas and it settles in...once again it feels like a dif slipping or a clutch slipping but it isn't......the tires are Ra-1s and do have a date code of 2011.....but the turn-in is good....so it doesn't make since why I would have so much wheel spin....I have run older tires before and they just lack total grip

My choices are to increase RH, increaese R camber, soften sway bar to full soft and put on new tires.......but still what I am experiencing does'nt make since for where he set-up is

[Tyler Dahl]

Are you noticing the increase in rpm when you are using the curbing only or all the time?

[Danimal]

Tyler, thanx for reading...Not using the curbs.....I have raced a mazdacomp and torsen in the past and I know what the torsen feels like on a curb....This is a big jump in RPMs....not the spilt second slip that a torsen does to lock up the worm gears when one wheel goes on a curb...Thanx

Tyler have you had rear grip issues on your NB? What is your RH if you don't mind sharing? (pinch weld and static shock travel)

Thank you

[Tyler Dahl]

My NB isn't done yet, i've never seen or heard of the NB's i've been around having this issue. How many miles are on the torsen? I think Wheeler said that they can wear out. Is there anyone local that could let you borrow a different one to see if it changes.

[Danimal]

I did....I swapped out my type II 4:3 with a torsen type I 4:3 and it did the same thing....NOT diff for sure

I am seriously puzzled, it doesn't make since to me and I can't get the clutch to slip in a test situation...and I even swapped clutches just in case