2010 Rules Clarification Topic |
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jeiB
Baja Godfather Joined: Jul/17/2009 Location: Montreal Status: Offline Points: 604 |
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Posted: Jan/19/2010 at 2:20pm |
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Hey everyone,
Since we are getting near competitions, people are going to have more questions about rules and I thought I would create a topic about rules in general. I emailed the rules commitee and they havent gotten back to me yet, so hopefully we can help each other much faster. Everyone can post questions here otherwise i will edit it to contain only my questions. 33.3.1 Lap & Anti-Submarine Belts -The lap belt must pass around the pelvic area below the Anterior Superior Iliac Spines (the hip bones) (Figure 9). Under no condition may the lap belt be worn over the area of the intestines or abdomen. The lap belts should come through the seat at the bottom of the sides of the seat to maximize the wrap of the pelvic surface and continue in a straight line to the anchorage point. In side view, the lap belt must be at an angle of between 45 degrees and 65 degrees to the horizontal. This means that the centerline of the lap belt at the seat bottom should be approximately 76 mm (3 inches) forward of the seat back to seat bottom junction (see Figure 5). To fit drivers of differing statures correctly, in side view, the lap / anti-submarine belts must be capable of pivoting freely by using either a shouldered bolt or an eye bolt attachment. Mounting lap belts by wrapping them around frame tubes is no longer acceptable. The lap belts should not be routed over the sides of the seat. The underlined portions are what puzzle me. What happens if your seat design is such that you cant have belts go throught the seat. Im suspecting this rule is made to prevent belts rubbing on the seat. Thanks |
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Jeremie B.
McGill Baja Racing 2009-2011 Captain minibaja.mcgill.ca |
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Red_Beard
Organizer Joined: May/14/2009 Location: Bellingham, WA Status: Offline Points: 269 |
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As long as they don't rub you'll be fine
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jeiB
Baja Godfather Joined: Jul/17/2009 Location: Montreal Status: Offline Points: 604 |
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thats what i thought, thanks
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Jeremie B.
McGill Baja Racing 2009-2011 Captain minibaja.mcgill.ca |
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asims
Welding Master Joined: Apr/07/2009 Location: Tucson Status: Offline Points: 184 |
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Last year we read "should" as a strong suggestion, and "must" as a requirement. Our belts went over the side of the seat, but properly tightened, there was no rubbing. We didn't have any issues with it at tech.
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Andrew Sims
University of Arizona |
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DrewT
Milling Master Joined: Oct/16/2009 Location: Bellingham, WA Status: Offline Points: 102 |
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I think the most critical thing is that the seat can't reroute the belt. As long as the belt goes straight from the mount to the driver's body without touching the seat, I think it should be ok.
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WWU Baja SAE team captain 2009-10
NC Process Engineer - Janicki Industries |
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asims
Welding Master Joined: Apr/07/2009 Location: Tucson Status: Offline Points: 184 |
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This got brought up in another thread, so I'll go ahead and add it here for the sake of completeness. This is an email I sent last year and the response I got.
Edited by asims - Jan/20/2010 at 7:11pm |
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Andrew Sims
University of Arizona |
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Baja_Cgp_Sherbrooke
Bolt Sorter Joined: Mar/30/2009 Status: Offline Points: 7 |
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As stated in the 2010 rules:
"Only foot operated throttle controls are allowed. A wide-open throttle stop must be mounted at the pedal. Mechanical, hydraulic or other throttle controls must be designed to return to idle-stop in the event of a failure. Throttle cable cannot be bare from the forward mounting point to the firewall. Foot pedal must be positioned so as to avoid foot entrapment in any position."
Does this means I can use my own throttle linkage or I must use the "official" Briggs throttle kit?
Thanks again!
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DrewT
Milling Master Joined: Oct/16/2009 Location: Bellingham, WA Status: Offline Points: 102 |
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Pretty sure you can use whatever throttle setup you can come up with. It just has to meet the requirements of the rule that it's foot operated and allows the engine to return to idle. We've used a bicycle cable and fabricated throttle pedal and a little fabricated aluminum block that mounts to the Briggs engine at the other end of the cable. An additional throttle return spring makes sure it returns to an idle in the event of a cable breakage or if the driver takes their foot off
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WWU Baja SAE team captain 2009-10
NC Process Engineer - Janicki Industries |
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johnpate01
Welding Master Joined: Mar/09/2009 Location: Knoxville, TN Status: Offline Points: 150 |
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We use that little brass engine throttle thing that Briggs has and we just make our throttle system interface with that. That way there is no way that they can say anything about it. That said, I don't think there's anything about it in the rules. Better safe than sorry, though.
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-John
Co-Captain, Team Tennessee 2008-2010 |
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charles ulaval
Milling Master Joined: Dec/31/2008 Location: Québec, QC Status: Offline Points: 67 |
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Seems like the brake light doesn't have to meet the SAE J586 rule like the past years...
22.4 Brake Light The vehicle must be equipped with a red brake light that is mounted such that the light shines parallel to the ground, not up at an angle. The brake light must be mounted at a minimum of 1 meter (39.4 in) off of the ground, generally between half and the top third of the height of the firewall. The determination of whether or not a brake light meets the required standards rests with the National Technical Inspectors. What do you guys think of that? |
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asims
Welding Master Joined: Apr/07/2009 Location: Tucson Status: Offline Points: 184 |
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Haha, we were happy about it when we saw it because we've had trouble finding a qualifying light in the past, but it turns out the light we bought for this year meets the standard anyways.
Makes me wonder what the motivation is, especially since reverse lights still have to meet the relevant standards. |
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Andrew Sims
University of Arizona |
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Rob71zilla
Welding Master Joined: Feb/09/2009 Location: Utica, NY Status: Offline Points: 324 |
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We went through 3 lights at RIT in 07 before be found one that passed and we have held onto it ever since. Maybe they finally realized those lights are hard to find and the rule is dumb anyway.
The reverse light thing is still puzzling though...
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Robbie
Former Team Captain SUNY Institute of Technology Current Engineer for Remington Arms A Redline a day keeps the carbon away. |
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Karan
Bolt Sorter Joined: Oct/30/2009 Location: Manipal, India Status: Offline Points: 17 |
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i would like to know if the two thread exposure rule(for all fastners) includes ball joints used to mount the suspension arms to the steering knuckle...
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asims
Welding Master Joined: Apr/07/2009 Location: Tucson Status: Offline Points: 184 |
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I would say it applies to any and all threaded fasteners. If you don't have enough thread to meet the rule, you might be able to get a castle nut and cotter pin to work, assuming there's at least enough room to drill a hole.
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Andrew Sims
University of Arizona |
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jeiB
Baja Godfather Joined: Jul/17/2009 Location: Montreal Status: Offline Points: 604 |
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God, finally found this thread again...
B3.5 Brake Light Switch Each independent brake hydraulic system must be equipped with a brake light switch, so that no brake, including cutting brakes may be activated without lighting the brake light. I guess that means two brake light switchs Also they changed the brake light rule back to requiring a SAE rating on the brake light. |
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Jeremie B.
McGill Baja Racing 2009-2011 Captain minibaja.mcgill.ca |
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