Door X Rule Clarification
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- Опубликовано: 11 фев 2020
- Continuing on the trend of new rules for NHRA in 2020, this video highlights the door X area of a chassis. Specifically, driver side door panels and how they are installed. The way the rule was phrased left Tim and many others scratching their heads on how it was to be implemented.
A quick call to NHRA tech officials brought insight to the intent of the rule which is clarified in tonight’s video.
Please pay attention to the full video as this rule does not pertain to all categories, but can be useful to most.
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The information contained in this video is based on the opinion of Tim McAmis and his 30+ years in the motorsport and manufacturing industries. Any action you take based upon the content provided shall be done at your own risk. TMRC and its affiliates are not liable for any losses and/or damages in connection with the use of this information. 
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Outstanding explanation, years ago in the circle track world there was a rule that said right side window clearance must be 13 1/2 minimum. Me thinking this is for escape purposes checked that i could fit out of my window. UMP official at a race told me i needed the other 1/2 inch. I asked him why? This is when he got huffy and threatened to send me packing. Thankfully a few minutes later he came over to my trailer and told me i have 1 week. Then he asked if i had tried climbing out. I said all the time that's how i get out of the car inside the trailer. Then he said with or without your helmet.. low and behold helmet didn't quite fit. I thanked him and gave him praise..
'Nobody can figure out how to run a clutch anymore' 😂 One of the best theft deterrents too is to have a manual car!
before or after they leave it in gear on the start, and drive through your garage/trailer wall?
@@TheTsunamijuan Never park a manual in gear.
@@magnus5356 Just cause you and I know that, doesn't mean others do... which seems to be why that happens... (and no neutral safety switch)
Thank God for Prostock & competition eliminator. 👍👍👍👍 but Promodified needs to be manually shifted with 3 or 4 speed lencos
@@magnus5356 Buy a Saab and it's mandatory you park it in gear to take the key out. lol
You have to press the clutch to be able to turn it on though
I freakin love Tim's way of putting things lol 🤣
Tim: "Now we just have a brake cause no one can figure out how to fricking run a clutch anymore"
Fantastic explanation. I can't add anything to anything that's hasn't been said already. Great video information, please keep it coming forward thank you Tim.
No one can run a clutch anymore hahaha . Love this guy
setting the airgap in between each pass sucks balls though
We r in process of updating our 2018 built chassis now, and we too were scratching our heads like wtf??!! As always Tim n his DIY vids makes sense vs NHRA tech wording. Thanks Tim Mcamis race cars!!!!
Thats a great explanation. I really appreciate the more technical aspect of the hows any whys.
Thanks the description makes perfect sense and logic. After the cuts are made the area is cleared as a module.
This is my new favorite channel, Very impressive shop. As a fabricator mostly off road and road track, I can see you build a quality chassis. Great explanation on the rule change that would benefit our off road and track chassis. Any tip to help keep our customers safer and save a live when minutes are crucial is a win win for any race class.
Always informative Tim, thank you for taking time to explain these things so clearly, I too was scratching my head when you referred to "must not be attached", I remember the old days in situations like this NHRA provided an illustration of what the wanted, thank you again.
Keep up the great videos Tim. I learn so much from every new video. The best part is, you don't have to do this, but you do. The welding videos have taught me so much. Thanks for keeping us all safe on the track by making quality shit and caring about all of our safety. We really appreciate everything you do. Thanks again!! Have a great weekend!
Excellent explanation love your thought process. Even though I’m a stock car guy I came across your channel a while bank and enjoy your honesty and willingness to help everyone. I wish we had more people like you in our part of the sport. I really like the thought of leaving room for the Hurst tool, like you stated every second counts!
Im building a car now this helped me figure this mess out,thank you sir👍
The explanation makes perfect sense. I can definitely see this being useful for classes that don’t require this. I’d rather not die if I’m in a bad spot.
When door cars began to run 5 second ET's, it opens a can of worms. Nice job communicating the goal of the rule.
It makes perfect sense the way you explained it. Thanks Tim.
Great idea! Great explanation!
Great video and information Tim, and I did notice that you left an access point for the jaws to grab the cage. 👍
Great information. Thanks 👍🏻👍🏻👍🏻
I love when you curse!! It’s way more believable than other channels. Thank you. I know you didn’t in this episode but keep it up.
The thought of that cage getting cut up makes me sad. Great explanation of the rule, and all of the fab work on the car looks incredible.
Thanks again for another great vid !
Great Explanation!
I’ve watched almost every video you’ve put out within the last month I just realize you’re in hawk point and I’m in Moscow mills. I’m not building a promod just a street car ls big turbo th400/8.8 diff still good to know ypur right there
Mutually beneficial solutions... easy to keep in a builder's mind. Thank you for providing us with your help by way of tips! KUDO'S!
That is definitely a good idea. I agree that you’re “cocoon” of carbon paneling that basically becomes modular when the bars are cut is a huge step in the right direction for any caged car.
Thank you! Amazing video!
Wow!! Great info. It is even correct!!! Rarity on the interwebs!!!! Thanks Tim
Will def keep this in mind when I put a cage in my s10. Thanks for making it make sense.
If you're putting a cage in an S-10, it's gonna do things Chevy could have never imagined...good luck and be safe.
Very well said enjoy your videos and your wealth of knowledge
i have a few things. are the cut away in the corners of the panels big enough to really get a jaws of life in to where it can cut thru the tubing in one pass without resetting. the lower front and lower rear look like it might be a tight fit.. especially with any upward deflection of the rocker bar .. idea 2.. instead of carbon fiber panels.. aluminum panels that have beads rolled toward the outside. so the drivers side is smooth. the beads are rolled with the final angle of the attaching point bars starting in the middle and working their way out like a fan.. so if the cage is BENT.. the panels can expand without ripping loose of their 2 sided attachment points the panel is going to shrink as the beads are rolled so its going to start much larger. each bead will have to be drawn on after the previous bead is rolled, starting in the middle and working both ways. this allows the drivers legs to be protected from outside debris and from bumping the cage. (edit: visualize Sunburst pattern) this may take some creative rolling. or some creative bending. it also gets rid of the possible broken carbon fiber .. (thinking of possible broken carbon fiber next to the driver makes me wince) wraps of yellow and green tape/paint for jaws of life cut locations might be an idea to implement also. or just green areas where the builder has designed in room enough to cut thru at..
off thread. i have wanted hydroformed tubing for the front and rear bars to the drivers cage.. stretch out a bendy straw. stick a smaller straw thru it as a guide to keep the corrogated section collapsing straight . this inner is only welded in at one end.. this reduces the G forces on the drivers in a front or rear end impact.. reducing the straight arm football tackle effect.
Tim Thank You very much !
Good stuff Tim
Good stuff Sir!
You are the man! I started busting out laughing when you said no one can figure out how to use a clutch anymore LOL. That is so damn true! In my opinion, there is no such thing as an automatic race car!
Thanks great info
Nice breakdown
Love ya Tim 😘 keeping it real!!!
I knew he wasn't going to get through it without swearing lol thanks Tim for keeping the faith
someone from NHRA been sport car racing and saw our cars it a very very good idea hands down
Tim do you sell the channel for the carbon sheet to slide into?
Nobody can figure out how to run a clutch anymore. Lol. Sadly true. They are slowly becoming anti theft devices.
You could leave relief areas for the jaws to cut and put two yellow marks to show the safety safari where to make there cuts.
Tim, do you have any FEA to show where the high stress areas are in a given chassis, preferably a high torque( horsepower) example? I'm certain there are a few of us out here with that level of curiosity.
Thanks in advanavce.
Great breakdown!!! Safety first during a 200+ roll over, with a big fire and your KO'd.
When you do something new like this on the first car built to the rule changes does an NHRA tech inspector come to the shop and tel you yes/no this will pass tech or do you guys just send the car to the first race and hope it passes inspection?
Our favorite question when going through tech, just what are the rules? You would be surprised the answers from different people.
Perfect
Tim where can we get that carbon fiber stuff?
I've lately been comparing NHRA vs. FIA cages. Why is the construction, especially for side impact, so different? Also, are modern cage designs done with computer stress modeling (FEA)? Thanks for your channel.
how about marking the cutting points in orange as cars are different. having the cut points marked in bright colors. it might save time
given the reason, why not put some red tape or a marker on the X bar, a "cut here" line that guarantees fast removal.
Good idea
whats peak rpm going to be on that centrifugal
Why not centre steer?
So they are talking rigid attachments right? What about the use of Nylon attachment points, For going forward? If there is a need. The nylon is strong and flexible, and light. They can either cut or bend the panels out of the way. The advantage being its a inexpensive material that can be quickly removed in the case of an accident.
Purpose gives meaning to rules and life.
This is a great idea to add safety to any race car not just for the fastest door cars.
Doesn't this make it harder to get out when things do go wrong?
Maybe that section should be bolted or locked in with pins. Why not hinged and latched, something like a ...... door? It's getting difficult for the big boys to get in and out.
Building a new super class car. Is aluminum acceptable for these panels?
Carhartt hecho en Mexico. I guess I haven't worn these in a while. Just watched you china video( and I completely agree!) but I think it goes further than just china.
Surprised you don’t have to mark cut points with a different color...
✝️🇺🇸👍 thank you for the explanation
Bars should have gussets.
👍🏻
457th 👍's up tim thanks for taking the time for us all
👍👍👍👍👍
1:30...We called those...knee nets back in the day. Haven't heard them mentioned in years. Everyone who knows what I'm talking about will be showing their age!
Loved him straight to the point. S***
Tim your a very smart guy!!!
You explained it so all us dumb asses get it!!! Lol
Thanks
First pro mod I’ve ever seen that was built safe and doesn’t have the transmission exposed and sitting on the floor like the street outlaws aholes run but he’s an old racer so he knows what happens when transmissions blow up
There wasn't one mention of any bullshit in this video😂😂
All of this BUT the door falls off and can come in to the car or into the crowd.
And Pro Stock know how to use a clutch,, the whole idea of the category.
Lenco transmissions are dated now...PS is almost all automatics these days. Clutch be gone!
Can't have cars with clutches anymore . It discriminates against one legged drivers . Or any mentally challenged racers unable to use both feet and both hands ( not to mention chew gum ) all at the same time .
My car is more for the no prep kings but I still don't want to die I'm not ready for Jesus to judge me
Rules, rules, stupid rules and more stupid rules.... How about making cars that go fast and see who goes fastest?