SFI To give scientific proof why to use chrome molybdenum
Target:
SFI Foundation, Inc.
Sponsored by:
petition SFI, NHRA, IHRA and ETC to do testing and give scientific proof why 4130 C/M is more superior than Mild Steel .What is the reasoning that we have to use 4130 C/M in an advanced et car Please list your name or business name along with what sanctioning bodies you are a member of.
chassis shops
Licence holders
Crew Members
If you want an answer sign here
chassis shops
Licence holders
Crew Members
If you want an answer sign here
petition SFI, NHRA, IHRA and ETC to do testing and give scientific proof why 4130 C/M is more superior than Mild Steel .What is the reasoning that we have to use 4130 C/M in an advanced et car Please list your name or business name along with what sanctioning bodies you are a member of.
chassis shops
Licence holders
Crew Members
If you want an answer sign here
chassis shops
Licence holders
Crew Members
If you want an answer sign here
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We signed the "SFI To give scientific proof why to use chrome molybdenum" petition!
# 108:
# 107:
I have owned a collision shop for 14 years and am curious why a lighter chassis like used in pro stock is so much stronger when a pro stock chassis barely makes it a complete season before it cracks so bad it has to be replaced and mild steel cars 20 years old still are fine.
# 106:
I have owned a collision shop for 14 years and am curious why a lighter chassis like used in pro stock is so much stronger when a pro stock chassis barely makes it a complete season before it cracks so bad it has to be replaced and mild steel cars 20 years old still are fine.
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# 104:
If a mild steel car is strong enough to run 7.50, it should be strong enough to run 7.49 and quicker. If it is not please show us the proof.
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I also feel that the m/s chassis are thicker to make them about equal to the c/m chassis! If there is a strength difference proven then a mild steel spec like a 25.2 spec should be created with more bars than 25.5 to be safe for a mild steel advanced et!
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# 96:
You guys don't know crap about chassis or metallurgy. You sound like a bunch of whiners. 4130 is the best material for drag racing!
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# 94:
I feel that with the proper engineering of the chassis mild steel is adequate for advanced ET builds. Mild steel is also much more cost effective and being required to be a thicker tubing to match the strength of C/M, I fail to see how mild steel would be inferior to C/M with respects to being used in chassis buildups. If mild steel tubing can be used in sanctions such as NASCAR running at very high speeds I fail to see why it is deemed non-applicable in advanced ET drag cars. Saving thousands of dollars when building a chassis would be very rewarding to racers all over who do not have limitless pockets and wish to compete.
# 93:
I would love to see some testing done in order to verify this. I would also really appreciate it if the 25.5 cert was required at 7.99, not 8.49. I believe that 8.49 is simply too slow or rather, too easily attainable to substantiate a 25.5 chassis. It makes racing even less cost effective, and I believe that it is pushing many hundreds of racers away and hurting the sport.
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More fun !
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la question se pose, auprès de professionnel et de pilotes, avec des essais à l'appui, pourquoi SFI Foundation a t'il limité les chassis en acier doux à 7.50s alors que rien, strictement rien ne prouve que du tube en CM est plus rigide, ou plus dur, ou plus autre chose que l'acier doux. Son seul avantage est d'ètre plus leger, mais nombreux sont ses inconvénients: prix, méthode de soudure, etc. Mais plus grave encore: SFI foundation, eux mèmes, sont incapable de dire, ou de donner une raison valable à cette limitation.
# 85:
Top Sportsman Crew
# 84:
Drag Racing series are growing up in France. Such a reglementation don't allow to build new chassis at small price.
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# 82:
Avant toute décision réglementaire, il me parait logique de la valider par une démonstration scientifique irréfutable. Ceci afin d'éviter des polémiques ultérieures. Vu de l'Europe, il me semble que c'est cela '' The American Spirit'' V.Westphal, 3ème au championnat de France Super Comp ET. 2007.
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I'm professionnal pipe fitter & welder with licence. I've build 25.4 chassis. All Tig welded. I don't want work with CM... Because the first and good reason is... The price! www.mrachassis.com
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# 76:
I agree with testing mild steel. My car is a complete unibody chassis as well as having a 25.5 chassis. At least show us why sfi is in charge of the decisions like this with no shown crash data. Or possible new alloys available that are less critical to weld.. Thank you in advance.. David Robinson... NHRA license holder and 25.5 chassis owner.
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Please reconsider the use of mild Steel at the same time provide, engineered/science based proof that one material is more suited for the application than the other
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NHRA licence holder with a 25.4 mild steel cert car.
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RAC MSA licence holder,transmission shop owner.
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5:52 pm PST, Nov 11,
Steven Toth, Canada
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3:37 pm PST, Nov 10,
Vinnie Rosato, New Jersey
25/2 chassis built by Joe Gambino at precision racecars |
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Fabricator, Bunker Race Cars and Performance Center/Crew Member, Bailey Motorsports #7700 Pro Mod
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current nhra license holder t/s,s/g,e/t ase certfied master tech w/L1 very high volume auto repair shop owner own a very well built and very safe 25.4 chassis that should be 25.1e but has some mild steel.
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nhra license holder
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