STX Rules and Setup Questions

[renfield90]

Originally Posted by cjd

14.6D allows for disabling ABS electronically. Does this mean I would need two devices based on this reading (assuming I actually wanted to disable ABS)? That makes no sense at all.

That's a general question for discussion, not directed at anyone in particular.

IMO the SEB is full of shit, or they have just snuck in a tech bulletin without calling it as such. Given the apparent lack of experience/knowledge with modern electronics I am discovering elsewhere in the Solo world it isn't surprising.

14.6.D and 14.10.B do not have any language about "devices may perform no other functions." Plugging a disable device into your ODB port counts as electrically disabling those functions.

If I wanted to use a beastronix, I would build to the rule book and happily take my chances with a protest committee. I think you'd be on very solid ground. The only technicality I see actually is that the non-ABS-disable version does disable EBD. You could claim that is a traction control function as it almost meets the definition (sticking point is "attempted acceleration," although there are documented cases of EBD activating under acceleration that's not its main use). And even if the PC didn't buy this, you can fall back on this being a comfort and convenience item as the factory already has this mode programmed into the car, you just came up with a way of automating the input.

For reference:

Originally Posted by Solo Rules Chapter 12

traction/stability ccontrol[sic] A system that adjusts engine power, braking
force, or torque distribution when wheelspin due to attempted acceleration,
understeer, or oversteer is detected or predicted. Conventional
limited slip differentials (e.g., viscous, passive clutch, helical/worm gear,
locker) are explicitly excluded, but “active” differentials and their controllers
are included.

[smg1138]

What's considered the optimal ride height for STX? I'm currently lowered about 1" from stock, but it always seems like other 86 drivers are lower than me. Since we aren't allowed to do geometry correction, I wonder how low we can really go before diminishing returns?

[bslate3]

Another good question to go with that is how low can you go in the rear before you need rear LCA's? I'm new to STX and still doing my research.

[cjd]

Ride height as low as you can while doing everything else you need to do. There isn't exactly a ton of travel available to give up, and you need to stay off the stops. Spring rate will play a role here... I've heard anything from 1.5" to 2" being the limit. I'm probably in that range all four corners, and am both lower and on higher rates than most around me at events... At the moment.

I would consider a rear LCA key to a proper even alignment and the ability to set it where you want.... Unless you stumble upon a setup that just works exactly right. You could do the eccentric UCA bushing instead but whomever does your alignment will likely hate you.

[Blue Gt]

Should I spend the $ or not? Is this a good upgrade or does it actually have a negative effect on the car's handling as some have stated? TIA DP

[smg1138]

Originally Posted by Blue Gt

Should I spend the $ or not? Is this a good upgrade or does it actually have a negative effect on the car's handling as some have stated? TIA DP

I've never used one, but from everything I've read, it doesn't offer any noticeable increase in performance. The money would probably be better spent on other parts.

[DocWalt]

Front strut brace isn't legal in STX due to the classification of our factory strut braces and the money is better spent elsewhere anyway

[cjd]

Originally Posted by DocWalt

Front strut brace isn't legal in STX due to the classification of our factory strut braces and the money is better spent elsewhere anyway

Pretty sure it's legal as long as it just connects the strut towers and the factory pieces to the firewall are retained.

[Shneegle]

Strut brace is LEGAL it just cant be a triangulated strut bar. It can only connect the 2 strut towers.

[DocWalt]

I was pretty sure there was a special rule in one of the fast tracks saying that it specifically wasn't legal?

Either way, it's money better spent elsewhere, IMO.

edit: Doing a quick google search and found this gem from Terry Fair... when will more people realize his modus operandi is complaining about cars then making a bunch of parts for them, then claiming that they're now amazing and the best things ever?

"Again, I don't feel the FT86 twins will be a threat to STX, but they should at least be competitive here, unlike in STR, where they would have been cannon fodder."

[Silver Ignition]

From what I remember that was discussed a few hundred pages back in this thread you can either upgrade the two factory bars OR do a 2-point across the two strut towers but you can't add a 3-point or remove the factory bars

[renfield90]

Originally Posted by cjd

Pretty sure it's legal as long as it just connects the strut towers and the factory pieces to the firewall are retained.

This is 100% correct.

Originally Posted by Silver Ignition

From what I remember that was discussed a few hundred pages back in this thread you can either upgrade the two factory bars OR do a 2-point across the two strut towers but you can't add a 3-point or remove the factory bars

No, the factory reinforcement bars are not considered strut bars because they do not directly link the two strut towers together. They're considered part of the body and cannot be removed or modified in any way for any reason, including the addition of other allowed modifications (like a strut bar).



IMO this chassis is so stiff that an STX prepped car will not generate enough grip to make chassis flex a big problem. The factory reinforcement bars are there for a reason.

[renfield90]

Originally Posted by DocWalt

edit: Doing a quick google search and found this gem from Terry Fair... when will more people realize his modus operandi is complaining about cars then making a bunch of parts for them, then claiming that they're now amazing and the best things ever?

"Again, I don't feel the FT86 twins will be a threat to STX, but they should at least be competitive here, unlike in STR, where they would have been cannon fodder."

Funny, because I damn near raw timed STR this weekend in competition runs (and definitely did in fun runs). And not counting a diff I still need to spend another 4-6 grand in order to get the car where I want it.

[DocWalt]

Originally Posted by renfield90

Funny, because I damn near raw timed STR this weekend in competition runs (and definitely did in fun runs). And not counting a diff I still need to spend another 4-6 grand in order to get the car where I want it.

STX would have beaten STR at nationals in 2015, lol. Sure, probably different rubber down on course, but still...

What would you want to spend 4-6 grand on? I feel like my 75% build was pretty fast and there were a lot of easy changes to make still.