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Official 2025-11-04 Upgraded Spherical Bearing and Bearing Install Tools

Sam Reed
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Beginning today, a new spherical bearing for the controls is available as an upgrade option. The new race bearing features a PTFE liner that will no longer require additional lubrication to achieve its best performance. This is a direct drop in replacement for the current spherical bearings and does not require replacing the control arm.

See the TSB for more information.

Technical Regulations for Rush Auto Works Race Series

Sam Reed
steven_d said:
Can we get some clarification on the intention for the rules governing allowed sensors?

Previously it was:

Now it is:


Is the intention to control the sensor types, and that Rush will be expanding over time the types of sensors available for purchase? Or, is the intention going forward that none of those sensors should be used?

If those sensors will be allowed, and we already had them, are we required to remove them until Rush offers an equivalent, then obligated to purchase new ones?

It would be great to get some insight into the intended sensor suite.
Click to expand...

You can declare these via the Tech Variance and we will have a look at it. We wish to keep the playing field as level as possible, and I have no interest in making people pay twice for the same equipment.
Click to expand...

Technical Regulations for Rush Auto Works Race Series

S
Can we get some clarification on the intention for the rules governing allowed sensors?

Previously it was:
It is permitted to add Steering angle, Fuel pressure, coolant pressure, oil temp sensors only
Click to expand...
Now it is:
It is permitted to add data sensor packs only sold by RAW Aftersales
Click to expand...

Is the intention to control the sensor types, and that Rush will be expanding over time the types of sensors available for purchase? Or, is the intention going forward that none of those sensors should be used?

If those sensors will be allowed, and we already had them, are we required to remove them until Rush offers an equivalent, then obligated to purchase new ones?

It would be great to get some insight into the intended sensor suite.
Click to expand...

Technical Regulations for Rush Auto Works Race Series

K
David,

Its worthy of discussion for sure, so thanks for chatting about it, and its an age old debate in racing.

Just so you know, I don't have crew or a crewchief either. I use those terms to the refer to the roles one plays when not actually driving. I am doing crew chief things prepping the car in between outings and when adjusting it between sessions. In the past I have played that role for others alot tho. Most of my experience is only in spec classes.

I could back the idea of individualized setups if it was mandatory for it to be shared with the entire paddock, so that those who cannot afford a crew and crew chief can have the opportunity to make the same adjustments on the car themselves and try it out.

Otherwise, having setups and pads that are fixed or very narrowly adjustable is the best way to ensure that the series truly is about driver skill rather than who has more money to spend to buy pace.
Click to expand...

I confidently can say that spec cars' performance envelopes are from the physics of the car. Grip, HP, drag, weight, weight transfer, and CG. The RUSH concept has done excellent defining these. I also will say that executing lap times from said package is all about the car interacting with the driver in a way that the drivers brain makes sense of. You can see this everywhere from Red Bull in F1 to SM in club racing. So, the point of my post is that I do not think RUSH should go down the slippery slope of mandating the feel of the car. To me, drivers skill is about feeling the grip and making the most out of it by tuning the feel to your preference, then executing a lap at a high level.

For example, Braking is 1/3 of the inputs a driver has control over, some like light touch brakes and some like the opposite. Some like a very high initial bite, some don't. But either way, the braking limit of the car is the same.

A steering example is some drivers like a pushy car, some like a pointy or loose car. But either way, the cornering limit of the car is the same.

I have seen over and over again, close racing where the front runners are at the opposite ends of the tuning window for feel, ( If they had to run each others car, they slow way down, that experiment has been done, alot). So, I am encouraging RUSH not to mandate that out of this relatively new class that is just getting momentum.

My .02
Kyle
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NASA/SCCA updates for 2026?

davidharvey95
Kw78 said:
The RUSH cars can run in SCCA/NASA this year. NASA requires the new fuel cells that come with new rush cars now, so if you buy a used one you will have to update to the new cell.

SCCA, last I knew, is allowing the old cells and the new cells. Perhaps Sam here can correct or clarify.

Neither organization has a dedicated pure RUSH run group. You only get that running in the RUSH series as put on by Grid Life.

Your local chapters of both NASA and SCCA have the latitude to create regional class to accommodate the RUSH, and where I am at (Colorado) the local SCCA is classifying RUSH as a regional class and to run in the SRF run group. You will be on track with SRF and RUSH but the results reflect you are racing other rush cars. This is what I have been told but I have not read this in print yet. (it may be tho)

In NASA however, currently the RUSH car fits into ST2 class. You will be racing other ST2 cars and in a mixed ST run group (ST1-ST6 is possible) against mostly sedans currently. However, our local NASA chapter is working on creating a "low profile" group where we will be running RUSH and other sports racers such as the NPO1s.

Many people worry about the little RUSH running next to sedans, but previously this has not been a problem in my area. The rush is visible, especially with the roll bar strobes invented to help this. I have purposely asked many sedan drivers on practice days if they could see me well. Basically we are about as visible as a miata it seems. But, since we out corner most sedan cars at the track, you have more control than you tnink navigating traffic.

As always, if enough cars show up, they can influence the schedule and the run groups - so it is a fluid process. The Rocky Mountain region NASA expects 10+ rush cars, and I have personally chatted with 6 of them and seen 3 more, so I think it will be more like 12-14. Should be a really fun group.

Hope you get out racing. This thing is as fun as a YZ250 or an IT465 was, and I have yet to break a helmet or a bone in this... knock on wood.... 😁
Click to expand...
Not Sam lol, but I can answer regarding SCCA.

SCCA will only allow the Rush with the new tanks.

I did my Comp School with SCCA in Houston in December, and they allowed the old tanks because the school was put on by the track and accredited by SCCA, not provided by SCCA itself.

Can't speak to SCCA as a whole, but in the Houston Region (which is basicially all of TX), they mentioned putting us with the formula fords and formula regionals etc, but said that if we show up with 20-30 cars regularly (like what was happening down here with NASA before the whole tank debacle) that they would have a very stong case to give us our own run group.
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Technical Regulations for Rush Auto Works Race Series

davidharvey95
Kw78 said:
Thanks for the Reply Sam, I appreciate it!

I understand the problem with the original system and applaud the further development.

I too arrived at a much more aggressive pad, and a weak-ish rear pad. I also appreciate there is no support for an abs driver aid, love that! The car is stopping damn good.

I just resist the trend to make it mandatory, and the trend for the rulebook to squash crew chief adjustments for driver feel. Engagement of the brakes is a huge piece of the puzzle. For example, I've recently had one Porsche driver tell me they can't stop their car, and a teammate under the same tent take the car out for a few laps and report back they are the best brakes he's felt. They raced the same cars in the same class, just wanted different feels. (One of the drivers in this example just got a RUSH! Ironic!)




This is excellent to address. ABS used to be a luxury in a race car, but now it is so common that I think the RUSH class has lots of participants that have always had ABS. Feeling a lockup is a learned skill of course and people will get there, but I understand helping them along with design updates!

Kyle
Click to expand...
Kyle,
I was just reading this thread and wanted to weigh in with a different perspective.

While I understand the desire and benefit to allowing for a range of tweaks and adjustments to suit driver preference, I also have issues with it.

Sometimes drivers and teams will guard the secret like it's the difference between life and death, and they maintain a massive pace advantage because of it.
In my opinion, that is against the spirit of a spec series because those who have the crew and the money to pay the crew to develop a setup for them have a massive advantage over those who are by themselves or only have one or two volunteer helpers.
I could back the idea of individualized setups if it was mandatory for it to be shared with the entire paddock, so that those who cannot afford a crew and crew chief can have the opportunity to make the same adjustments on the car themselves and try it out.

Otherwise, having setups and pads that are fixed or very narrowly adjustable is the best way to ensure that the series truly is about driver skill rather than who has more money to spend to buy pace.
Click to expand...
  • Like
Reactions: Black Rabbit and Sam Reed

NASA/SCCA updates for 2026?

K
The RUSH cars can run in SCCA/NASA this year. NASA requires the new fuel cells that come with new rush cars now, so if you buy a used one you will have to update to the new cell.

SCCA, last I knew, is allowing the old cells and the new cells. Perhaps Sam here can correct or clarify.

Neither organization has a dedicated pure RUSH run group. You only get that running in the RUSH series as put on by Grid Life.

Your local chapters of both NASA and SCCA have the latitude to create regional class to accommodate the RUSH, and where I am at (Colorado) the local SCCA is classifying RUSH as a regional class and to run in the SRF run group. You will be on track with SRF and RUSH but the results reflect you are racing other rush cars. This is what I have been told but I have not read this in print yet. (it may be tho)

In NASA however, currently the RUSH car fits into ST2 class. You will be racing other ST2 cars and in a mixed ST run group (ST1-ST6 is possible) against mostly sedans currently. However, our local NASA chapter is working on creating a "low profile" group where we will be running RUSH and other sports racers such as the NPO1s.

Many people worry about the little RUSH running next to sedans, but previously this has not been a problem in my area. The rush is visible, especially with the roll bar strobes invented to help this. I have purposely asked many sedan drivers on practice days if they could see me well. Basically we are about as visible as a miata it seems. But, since we out corner most sedan cars at the track, you have more control than you tnink navigating traffic.

As always, if enough cars show up, they can influence the schedule and the run groups - so it is a fluid process. The Rocky Mountain region NASA expects 10+ rush cars, and I have personally chatted with 6 of them and seen 3 more, so I think it will be more like 12-14. Should be a really fun group.

Hope you get out racing. This thing is as fun as a YZ250 or an IT465 was, and I have yet to break a helmet or a bone in this... knock on wood.... 😁
Click to expand...
  • Like
Reactions: Black Rabbit

Technical Regulations for Rush Auto Works Race Series

K
Thanks for the Reply Sam, I appreciate it!

I understand the problem with the original system and applaud the further development.

I too arrived at a much more aggressive pad, and a weak-ish rear pad. I also appreciate there is no support for an abs driver aid, love that! The car is stopping damn good.

I just resist the trend to make it mandatory, and the trend for the rulebook to squash crew chief adjustments for driver feel. Engagement of the brakes is a huge piece of the puzzle. For example, I've recently had one Porsche driver tell me they can't stop their car, and a teammate under the same tent take the car out for a few laps and report back they are the best brakes he's felt. They raced the same cars in the same class, just wanted different feels. (One of the drivers in this example just got a RUSH! Ironic!)


A strong motivation of mine for the 2026 series has been to reduce full-course yellows. This, and some other reliability changes we've made and are making, will go a long way toward that goal.
Click to expand...

This is excellent to address. ABS used to be a luxury in a race car, but now it is so common that I think the RUSH class has lots of participants that have always had ABS. Feeling a lockup is a learned skill of course and people will get there, but I understand helping them along with design updates!

Kyle
Click to expand...
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