22LikesTekno RC EB48.3 Thread
03-13-2017, 12:03 AM - Wikipost
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11-08-2016, 11:39 AM
#2522
Go there and look. It has a chart. Plan to use 425 fr and 475 rear on kit pistons (4x1.8) with bladders. If you have 3 holes and emulsions, it's different. scroll back a few pages I think Matt mentions it. If not, message me and I'll find out for you.
And for what it's worth, I start with Joe's Southern Nats setup from 2015. If you don't have all the new parts (springs, pistons, shock caps, hubs) I suggest starting there.
11-08-2016, 12:01 PM
#2523
http://www.ptrcracing.com/Technical-Data.html
Go there and look. It has a chart. Plan to use 425 fr and 475 rear on kit pistons (4x1.8) with bladders. If you have 3 holes and emulsions, it's different. scroll back a few pages I think Matt mentions it. If not, message me and I'll find out for you.
And for what it's worth, I start with Joe's Southern Nats setup from 2015. If you don't have all the new parts (springs, pistons, shock caps, hubs) I suggest starting there.
Go there and look. It has a chart. Plan to use 425 fr and 475 rear on kit pistons (4x1.8) with bladders. If you have 3 holes and emulsions, it's different. scroll back a few pages I think Matt mentions it. If not, message me and I'll find out for you.
And for what it's worth, I start with Joe's Southern Nats setup from 2015. If you don't have all the new parts (springs, pistons, shock caps, hubs) I suggest starting there.
11-08-2016, 02:46 PM
#2525
http://www.ptrcracing.com/Technical-Data.html
Go there and look. It has a chart. Plan to use 425 fr and 475 rear on kit pistons (4x1.8) with bladders. If you have 3 holes and emulsions, it's different. scroll back a few pages I think Matt mentions it. If not, message me and I'll find out for you.
And for what it's worth, I start with Joe's Southern Nats setup from 2015. If you don't have all the new parts (springs, pistons, shock caps, hubs) I suggest starting there.
Go there and look. It has a chart. Plan to use 425 fr and 475 rear on kit pistons (4x1.8) with bladders. If you have 3 holes and emulsions, it's different. scroll back a few pages I think Matt mentions it. If not, message me and I'll find out for you.
And for what it's worth, I start with Joe's Southern Nats setup from 2015. If you don't have all the new parts (springs, pistons, shock caps, hubs) I suggest starting there.
11-09-2016, 08:37 AM
#2529
I usually run 7/7/5 PT oils, but I have been dealing with a MASSIVE front end push off power, mainly entering sharp turns. I've tried a number of the suggestions on here to reduce it, but it's still a problem.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
11-09-2016, 09:47 AM
#2530
I usually run 7/7/5 PT oils, but I have been dealing with a MASSIVE front end push off power, mainly entering sharp turns. I've tried a number of the suggestions on here to reduce it, but it's still a problem.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
11-09-2016, 10:43 AM
#2532
Quickly glancing at the setup you tried :
- Ride height as said 24f-27r
- more kick up would be my first choice for your problem . As the car slows down entering the corner the front will nose dive more thus giving a lower front rc (more weight transferred to the front as you corner).
your stability comes from the fact that you rear camber links are long, so as you accelerate your car squat and in this situation longer arms = lower rc as you accelerate more = exit corner stability .
-Try position 4A on the front camber link and/or 5D on the rear. This will lower the front rc and rise the rear rc.
If you're then loosing rear stability on exit corner then reduce antisquat at the rear. Again same idea as the front earlier the car squat at the rear when accelerating = lower rear rc
My two cents
- Ride height as said 24f-27r
- more kick up would be my first choice for your problem . As the car slows down entering the corner the front will nose dive more thus giving a lower front rc (more weight transferred to the front as you corner).
your stability comes from the fact that you rear camber links are long, so as you accelerate your car squat and in this situation longer arms = lower rc as you accelerate more = exit corner stability .
-Try position 4A on the front camber link and/or 5D on the rear. This will lower the front rc and rise the rear rc.
If you're then loosing rear stability on exit corner then reduce antisquat at the rear. Again same idea as the front earlier the car squat at the rear when accelerating = lower rear rc
My two cents
11-09-2016, 10:48 AM
#2533
More kick up is going to give even less entry steering
11-10-2016, 06:06 AM
#2535
I usually run 7/7/5 PT oils, but I have been dealing with a MASSIVE front end push off power, mainly entering sharp turns. I've tried a number of the suggestions on here to reduce it, but it's still a problem.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
I've been using the Bornhorst Southern Nats setup, with a couple of small tweaks to give a small bit more rear traction, but I was having trouble with it pushing off power when it was set up exactly as the sheet. I had the same problem when I was using the box stock setup as well, but the buggy felt a bit more "lazy" overall, compared to Joe's setup.
At the last race a couple weeks ago, I dropped down to a 2.2 front sway bar, and went to 5K front diff oil. It helped some, but didn't completely solve the problem. If I'm on a high bite surface, it's not as bad as on a looser / more dry surface, but it's still nowhere near as good as the Mugens, and Serpents that were at the same race.
All of the guys running Tekno EB's were having a similar problem....it makes the car less likely to spin out, but it also made us all have to slow way down entering tight corners.
I'd love to find a solution that solves the front end push, but maintains the stability that I like everywhere else.
The first thing I would try is going to the track on a practice day and just running pack after pack focusing on your throttle. Don't ever let completely off unless you have to brake. See if adapting your driving style some helps. If you get this down, your lap times and consistency will improve greatly.
Also see if one of the fast guys can drive your car. Don't ask them if there's anything wrong with it or mention the push. Just let them drive it and watch how the car looks / reacts while in their hands. That will help you determine if it's you or the car.
If you're absolutely certain it's an off power push that you have to remove then the first step is determine if the push is coming from a geometrical setting that is off (Roll Center, kick up, etc) or too much / little weight transfer. Attack the weight transfer first because it's easier to actually see.
For weight transfer I would start with ride height and droop adjustments. Maybe lower the front ride height a mm and give a little more droop in the rear for more transfer, or the opposite for less.