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Author Topic:   What is the best seat mounting?
Machinah
Member
posted February 23, 2002 04:33 AM
My track rules only allow mounting the seat to the rollcage or to frame bracing. I've seen some questionable methods of accomplishing these that just don't look like a great idea but have still passed inspection. I will be using an adjustable seat rail and Kirkey aluminum circle-track seat and I want to do this the right way.

Which is better?

What is your prefered, correct way of accomplishing either one?

Thanks.

snowman
Member
posted February 23, 2002 01:48 PM
Machinah, The seat should NEVER be mounted to the floorboard,so your tracks rule is a good one.

Usually,stockcars have a "seatbar" that is welded to the lower door bar and the rear hoop crossbar. This way, in the event you are hit in the door and the door bars start moving inward,YOU move inward with the blow,verses remaining stationary and in harms way...... When I build a stockcar,I run a straight tube from the rear hoop to the front down bar,one inch above the floorpan sheet. (This is in effect,another door bar, it just runs straight instead of being bent out toward the door skin.) It is this bar that I weld the seatbar to.

The seat is bolted at the front to tabs welded to the seat bar. The back of the seat is bolted by some means to the rear hoop crossbar. Some shops just weld some tabs to the rear hoop crossbar.Then the customer uses some pipe or tap tube spacers and long enough bolts to get the job done. This is done for several reasons, it is fast and easy and there is no way for them to know where the indivdual racer is going to want his seat. This method is widely used,it works well,so I'm not putting down. I prefer to fit each driver to his seat,and make brackets out of 1/4 thick,2 in. wide flatstock welded to rear hoop crossbar.

However,this doesn't particulary lend itself to making the seat moveable very well.(which you seem to wish to accomplish)

The only adjustable seat slider that I have seen was a piece of junk and I wouldn't put it on a kids push cart,much less a race car.
However,I have not seen the Kirkey rail,SO I'M NOT PUTTING IT DOWN,I KNOW THEY MAKE GOOD PRODUCTS AND ARE WONDERFULL PEOPLE,I HAVE A KIRKEY SEAT MYSELF AND THINK ITS GREAT. But just on GP I don't like sliders,one more thing to go wrong at the worst possible moment.(remember that the damage that you car (and YOU) are subject to increases at the square of the velosity)

If you do use a slider,you will need to install another bar at the back of your seat bar to catch the rear mounting point of the slider assembly. Then you still have the matter of supporting the back of your seat.You will have to have different bolt/spacers for your different seat positions. In any case,I would not install a seat that was not bolted on the back for any reason. Others may disagree but if I am going to make a mistake,I am going to err on the side of safety,and I hope that you will also.

In the end,just make sure your seat is bolted to the cage.You should in no way,shape or form depend on the sheetmetal floor to support you.

You should be able to get a diagram from Kirkey showing proper seat mounting.This is what they do,and they want to make sure thier seats are mounted properly.

Same deal with your belts,a diagram and detailed instructions come with every set sold.....Follow it to the letter.

These are my thoughts on the subject,I will make my phone number available to you (or anyone else) if you wish to discuss this matter in person,as I feel this is very important. I make no claim to be an expert,but I am always glad to help if I can.
BE SAFE......



racer17j
Member
posted February 24, 2002 06:29 AM
sell your rails to a drag guy they don't get hit like we do the way we do it we build a frame with peices of 1 in tubing and and some flat strap then one that runs under the seat from the bottom door bar and up to the petty bar on the bottom to get the right angle for the driver we just bend the bottom bar and the bars that come up the seat back and hook to the cross bar of the cage if you have to use stock colum and pedals like i do this works good but if you want and can move it back you can do it all the same but have the bars come down off the cross bar instead of bending them to meet the bar if you would like i can send you a pic of bolth ways we have cars set up bolth this also gives you a place to put your kill switch where the bottom bar meets the petty bar so it is ez to reach it in a hurry. one thig that i would shy from if you are not bolting it to the rear cross bar some guys have a single bar coming off the cage in the back i don't like the idea that if i get hit real hard that i have a bar right in line with my spine


racer17j
Member
posted February 24, 2002 06:47 AM
mach i just rembered if you go to www.circletrack.com and look at the artical on the i-stock they built they have a pic of what i'm taliking about it is very simular to our except they don't have a petty bar in there car for some reasonso where it is cut off at the bottom of the seat on that pic we run that bar up to meet the petty one other thing that is different on ours is we put a bar across the bottom where it starts to go up the back of the seat and that is where we mount our seat belts to find the pics go to the track tech/progect cars link and then the interior section on the imca stock car build up personally thats about the only thing i agree with on that whole build up lol

[This message has been edited by racer17j (edited February 24, 2002).]

[This message has been edited by racer17j (edited February 24, 2002).]

[This message has been edited by racer17j (edited February 24, 2002).]

Machinah
Member
posted February 24, 2002 07:03 AM
Thanks... I now have a much better idea of what to do with my seat mounting. I'll try to get Kirky to send that diagram.


Machinah
Member
posted February 24, 2002 07:29 AM
Racer, I've been trying to find that pic at circletrack.com, but am having no luck. Thanks.


BK19
Member
posted February 24, 2002 10:53 AM
try this http://www.circletrack.com/editorial/large.jsp?pid=83444


snowman
Member
posted February 24, 2002 12:04 PM
Machinah, Under the question "need roll cage info" TechMaster35 listed several companies that build roll cages.They build seat mounting kits also. Whether you buy thier product or not,you can go to thier site and see various mounting techniques.

One more thing, Make sure that the bottom of the seat bar is welded.If that means cutting out some of the floor pan to get to it, DO IT!!! The bar takes a beating with you weight on top of it bouncing on rough tracks.If you fail to weld it properly,it will break. I have had to fix a couple where the "welder" wasn't "worried" about that "little bit on the bottom that he couldn't reach"

BE SAFE, GET THIS RIGHT!!!!!!!

Machinah
Member
posted February 25, 2002 05:10 AM
Thanks... got the pic... it's a beautiful thing, man.


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