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Slugworks Paul

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Everything posted by Slugworks Paul

  1. All great suggestions but I want to emphasize the fact that leaks should be taken very seriously and eliminated at all costs.. trying to funnel fuel out of the car (and probably closer to the hot ignition sources) only helps you so much because fire likes to follow fuel to it's source, which unfortunately still shares a vapor body with the driver. Not only do we not have pills but we don't have a requirement to have fire suppression nozzles pointed at the fuel cell (WRL does) These suggestions should only and always be very much secondary to eliminating any and all leaks, and constantly monitoring your system for leaks that develop.
  2. Everything fails, and every part, component and system has an acceptable and allowable failure rate because us crazy engineers are sometimes in touch with reality and realize nothing will ever be perfect Cost however, raises exponentially as you try to eliminate those last few failures in pursuance of perfection.
  3. I guess the point i'm trying to make is that we should focus on having fittings/hoses/lines reliable and not leak rather than ignore those and shroud them which can hide leaks until it's too late (or create them in the case of the filler neck overflow). With my eclipse - the hatch deck is higher than the rest of the car. It slopes downward to the rear seat area and down again to the level of the driver seat. I was thinking about my car and what would happen if the fuel cell starts leaking. Otherwise I can't disagree that firewalls add a layer of safety. Interesting to hear from you about the other series' that have similar mandates.
  4. A few things to think about: -Champcar does not mandate a fluid tight seal in the firewall, nor any tubing containing fuel lines - focus has been on eliminating gaps but even spraying fuel resistant foam does not create a fluid tight seal - Fuel can still leak out underneath the car and could potentially pose a very large safety risk, arguably a bigger one than leaking inside the cabin because there's a large ignition source right underneath the car. From my perspective the firewall is to contain the heat and spreading of a fire once ignited (albeit for a brief period of time) but if fuel can escape it can ignite any number of places. As always, I appreciate your suggestions and experience on this issue!
  5. You make valid points Drew, but if those are the real issues why can't we tackle the real issues with the rules, instead of shrouding all these connections with a firewall? I've seen parker push-lok connections in commercial applications and they are completely safe when the hose is fully engaged on the barbs. If champ mandated crimped and pressure tested connections, and not a firewall, it'd make a lot more sense to me... (the feed/return hoses that run through my eclipse to the engine are professionally crimped and pressure tested, lots of local hydraulic shops can do this for a reasonable cost) Every time I've guest driven a car with a cell, I've leak checked all the connections in the cab with system full and pressurized (touched them all and checked for wetness). Cheap insurance for my life... and it surprises me this is not done at home before arriving at a race track. Maybe something easy to do that could be added to yearly tech? Champcars are by and large built in garages by amateurs... it's the name of the game for us.
  6. I don't think we should allow 'home brewed' connections. Off the shelf AN fittings and plumbing, installed correctly, is not something I'd classify as 'home brewed'. Maybe if you're using random brass plumbing from Home Depot? 99% of the fuel system issues I've seen with fuel cells is due to design issues with pickups, fuel filters, pumps, etc, which cause random issues when the crappy inline pump overheats due to upstream restriction or fuel starvation because stuff is bouncing around in the tank or excess debris is floating around in the tank. I've seen lots of fuel leaking issues with stock fuel tanks, especially when you change the filler necks and vents and remove the EVAP system. Some vent connections to OEM fuel modules are pathetic - using little plastic squeezy click-on connections with o-rings that LOVE to leak. As for installation location - I don't generally disagree but in no circumstance will I ever have my exhaust underneath or in proximity of any fuel vessel, even if it was that way from the OEM.
  7. Wrong. The FIA and SFI tests fuel cells which feed into the certification (we are required to install a certified cell and have since... 2012?) Very similar technology goes into making the fuel cell bladder vs. your stock tank. The 'can' that fuel cells come in provides an extra level of protection for the fuel cell.
  8. 1/8" minimum for anything but windshield which should be 3/16" min
  9. On the tippy car note, my car is so ridiculously front heavy, that even with front jackstands right behind the front wheels, if I remove the rear suspension/subframe it tips forward. YIKES.
  10. My vote is also on the spring rod, that's what I have.
  11. So what we *can't* use is this sort of thing? https://images.homedepot-static.com/catalog/pdfImages/1c/1cede02f-4dcc-429b-98c7-f0be339b23d0.pdf What's the differentiating factor? My head hurts. Edit: sorry to derail the thread. I am submitting a tech desk ticket on this question.
  12. Did they rule that flexible tubing legal? I know there was lots of discussion on that but can't remember the outcome. I seem to remember @Snorman saying they had to remove that sort of thing?
  13. No matter how hard I try I'll probably never escape my midwest roots, even though I've only lived there for 6 months of the last 3 years 😅
  14. Why do you hate straight line speed so much???
  15. If your car is significantly stiffer than factory, you don't have a need for full factory suspension travel/droop. If you've ever watched professional sportscar racecars go up on their air jacks you can see what i'm talking about in how little droop they have. (not saying droop is not important..)
  16. Any feedback on this from the teams that were at Road Atlanta?
  17. My first champcar (then chumpcar) race was spring of 2010. I will say, prices have changed in the last decade for sure. $800 seats (2 stints) used to be more common. You could race with a very solid team for $1000 for the weekend. I think that is due to both entrance fee increases but mostly due to the increased level of prep on cars, we've long since departed from anything resembling a 'crapcan' in most of the field. Thank you for your straw man argument - I did not in fact say anything nearing 'you can't get a roll cage built for under $6K'. That was a Phoenix performance cage, which is definitely a top notch professional level cage. I won't argue that i'm not a newbie as compared to you, I just wish your experience tempered your opinions a bit more. I do not have a poor attitude, if I'm given a great deal on a seat I am thankful for the opportunity and try to contribute to the team to justify that deal. Did you ever think that perhaps teams offer you a better deal due to your background in professional racing, and what YOU would bring to a team? Food for thought.
  18. I would say it should be valued the same as a spring spacer (can't remember if that's points or not)
  19. If I had a dime for every contradictory post you made with zero supporting evidence, I'd be a very rich man!
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