Xray T4 '13
#4232
Tech Elite
iTrader: (93)
no need for the ECSs, but definitely get a front gear diff and put 1M or 2.5M CST in there. Also, grab the upgraded diff out drives (http://www.amainhobbies.com/product_...-Adapter-Set-2). Springs are a must, 2 sets of 2.3s 2 sets of 2.5 and one of 2.7s (the stock kit comes with 2.7s in the front).
#4236
First weekend out with the car on asphalt @ the ROAR Region 4 electric road Regionals (http://www.rctech.net/forum/florida-...regionals.html) and all weekend i was chasing more rotation and more steering. My setup to get the car into an A main final podium position was a bit odd ball from what some other guys had, but it definitely was one of the fastest sedans according to track times.
http://forum.teamxray.com/xform/inde...D=440&setup=t4
if you are chasing more steering or rotation, switch the shims in the rear arms so the arms move closer to the front. Car will rotate a lot better
http://forum.teamxray.com/xform/inde...D=440&setup=t4
if you are chasing more steering or rotation, switch the shims in the rear arms so the arms move closer to the front. Car will rotate a lot better
I run 13.5 boosted and tried a gear diff, it made the car more stable and smoother to drive but lacked traction out of corners. Running Mod on the same track it worked great, as I needed the extra stability on the brakes etc.
So for me, stock = spool, Mod = Front Diff
Did you also try less rear toe?
#4238
Tech Fanatic
iTrader: (11)
Did you try a spool instead of the front diff?
I run 13.5 boosted and tried a gear diff, it made the car more stable and smoother to drive but lacked traction out of corners. Running Mod on the same track it worked great, as I needed the extra stability on the brakes etc.
So for me, stock = spool, Mod = Front Diff
Did you also try less rear toe?
I run 13.5 boosted and tried a gear diff, it made the car more stable and smoother to drive but lacked traction out of corners. Running Mod on the same track it worked great, as I needed the extra stability on the brakes etc.
So for me, stock = spool, Mod = Front Diff
Did you also try less rear toe?
#4239
I found I gained better initial steering with less rear toe, might allow you be be slightly less aggressive in other parts of the setup.
Will be trying your wheelbase changes etc next time out, but I will be running modified, so it will be interesting to see it's effect.
#4240
First weekend out with the car on asphalt @ the ROAR Region 4 electric road Regionals (http://www.rctech.net/forum/florida-...regionals.html) and all weekend i was chasing more rotation and more steering. My setup to get the car into an A main final podium position was a bit odd ball from what some other guys had, but it definitely was one of the fastest sedans according to track times.
http://forum.teamxray.com/xform/inde...D=440&setup=t4
if you are chasing more steering or rotation, switch the shims in the rear arms so the arms move closer to the front. Car will rotate a lot better
http://forum.teamxray.com/xform/inde...D=440&setup=t4
if you are chasing more steering or rotation, switch the shims in the rear arms so the arms move closer to the front. Car will rotate a lot better
so from that i moved the front shock to hole #2 and used 2.3/2.6 (thanks damian) progressives on the front and 1000cst oil in the rear diff made the car easy to get in and out of corners and the timesheet said it was faster too,i tried the shorter wheelbase at another track and it didnt work for me,i think if you run the shorter wheelbase you will have to adjust your set up to suit it,i ran 1.5 rear camber which doesnt wear 3mm of the outside edge of the tyre,this gave me more rotation as it reduced the rear grip slightly,looking at your set up i wouldnt say it was that aggresive tbh,im going to test 400cst oil in the shocks and the 2.5/2.8 springs on the front next time out
#4241
Tech Fanatic
iTrader: (11)
Interesting.
I found I gained better initial steering with less rear toe, might allow you be be slightly less aggressive in other parts of the setup.
Will be trying your wheelbase changes etc next time out, but I will be running modified, so it will be interesting to see it's effect.
I found I gained better initial steering with less rear toe, might allow you be be slightly less aggressive in other parts of the setup.
Will be trying your wheelbase changes etc next time out, but I will be running modified, so it will be interesting to see it's effect.
#4242
Tech Fanatic
iTrader: (11)
i had similar problems you describe and have almost eliminated the understeer in the slower corners,heres what i started with http://forum.teamxray.com/xform/inde...D=430&setup=t4
so from that i moved the front shock to hole #2 and used 2.3/2.6 (thanks damian) progressives on the front and 1000cst oil in the rear diff made the car easy to get in and out of corners and the timesheet said it was faster too,i tried the shorter wheelbase at another track and it didnt work for me,i think if you run the shorter wheelbase you will have to adjust your set up to suit it,i ran 1.5 rear camber which doesnt wear 3mm of the outside edge of the tyre,this gave me more rotation as it reduced the rear grip slightly,looking at your set up i wouldnt say it was that aggresive tbh,im going to test 400cst oil in the shocks and the 2.5/2.8 springs on the front next time out
so from that i moved the front shock to hole #2 and used 2.3/2.6 (thanks damian) progressives on the front and 1000cst oil in the rear diff made the car easy to get in and out of corners and the timesheet said it was faster too,i tried the shorter wheelbase at another track and it didnt work for me,i think if you run the shorter wheelbase you will have to adjust your set up to suit it,i ran 1.5 rear camber which doesnt wear 3mm of the outside edge of the tyre,this gave me more rotation as it reduced the rear grip slightly,looking at your set up i wouldnt say it was that aggresive tbh,im going to test 400cst oil in the shocks and the 2.5/2.8 springs on the front next time out
#4243
there ya go if im right i went the wrong way,ill get the hang of this one day lol
#4244
thanks for that,ive never really got to grips with ackerman,so with more shims im increasing/have more ackerman which if im right makes the inside turning wheel turn more than the outer?
there ya go if im right i went the wrong way,ill get the hang of this one day lol
there ya go if im right i went the wrong way,ill get the hang of this one day lol
I always think of the car on full lock with the inside wheels steering knuckle against the limiter. The less Ackerman you use the more lock the outside wheel has (inside wheel remaining on full lock the whole time).
It's the outside wheel that is doing most of the steering due to the weight transfer as the car rolls.
#4245
Other way around, more shims = less Ackerman, which means you turn the outer wheel more than with more Ackerman.
I always think of the car on full lock with the inside wheels steering knuckle against the limiter. The less Ackerman you use the more lock the outside wheel has (inside wheel remaining on full lock the whole time).
It's the outside wheel that is doing most of the steering due to the weight transfer as the car rolls.
I always think of the car on full lock with the inside wheels steering knuckle against the limiter. The less Ackerman you use the more lock the outside wheel has (inside wheel remaining on full lock the whole time).
It's the outside wheel that is doing most of the steering due to the weight transfer as the car rolls.