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589 Fabrication
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Discussion Starter #41
I know seats have been a topic thats been beaten to death... But right now we are looking at the Sparco Evo2's. That's what we have in the mega truck and like them. Although we didn't buy those new.

My gut says, buy the nice seats (evo2's), but do we really need a higher end seat for a stock class rig? Not looking at suspension seats at all.
 

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Durango-space-division
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I know seats have been a topic thats been beaten to death... But right now we are looking at the Sparco Evo2's. That's what we have in the mega truck and like them. Although we didn't buy those new.

My gut says, buy the nice seats (evo2's), but do we really need a higher end seat for a stock class rig? Not looking at suspension seats at all.
I'd say that you would want high end seats in a stock class truck. The suspension will be beating the shit out of you way more than a buggy with long travel, so something comfortable would be nice
 

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589 Fabrication
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Discussion Starter #44
These are gonna look good. 35x12.50r17 Maxxis Razr M/T. They look alot bigger than the 285/70r17 Falkens on the ZR2, and the pattern is more aggressive than I was anticipating from online pics.



 

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589 Fabrication
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Discussion Starter #49
Upgraded the rear drive shaft to thick wall steel to replace the factory aluminum shaft that is super weak. Should have this upgrade and more details on our website today.

1350 Spicer U-joints and yokes

 

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Balls Deep
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I can't imagine building anything off road related without suspension seats. That seams not just illogical, but idiotic and irrisponsible if not ignorant.
 

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589 Fabrication
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Discussion Starter #51
I can't imagine building anything off road related without suspension seats. That seams not just illogical, but idiotic and irrisponsible if not ignorant.
Suspension seats can be dangerous in off-road racing. The movement that the seat allows causes your seat belts to loosen up and won't let them hold you in properly. A lot of back injuries with suspension seats.

If you do a google search you can find a lot more info about it. That is just one of the highlights on why not to run them.
 

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Yooper In Training
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Suspension seats can be dangerous in off-road racing. The movement that the seat allows causes your seat belts to loosen up and won't let them hold you in properly. A lot of back injuries with suspension seats.

If you do a google search you can find a lot more info about it. That is just one of the highlights on why not to run them.
This. I used to be of the same mindset as busyfixin, but a back injury at Silver Lake(minor injury thankfully) changed my mind. For rock crawling I'll take suspension seats all day, for anything high speed with lots of extended and unpredictable movement and dynamic hits, fixed seats and harnesses are much safer. It's arguable that they're better for big hits rockcrawling too, but there are pros and cons to both.
 

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589 Fabrication
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Discussion Starter #53
For reference we run Sparco EvoII composite tub seats in this. They are extremely comfortable even on a jump like this. We will most likely end up with these again.

 

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Balls Deep
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I agree that the seat discussion has been beaten to death. To each his own, but I'd be fool not to give my opinion on it as I feel strongly one way. After seeing someone become paralyzed from spinal impact/compaction due to using a solid seat instead of a suspension seat, my opinion became pretty one sided. Reading about numerous others has only reinforced my position.

Sure, your suspension should take most of the hit. But when your chassis takes the hit before the tires or axle hits the ground, it's just you, your back, and the seat that absorbs the hit.

My single seater has a fixed seat in it, a Corbeu FX1. It's a nice seat. It's just not a nice seat for an off road rig. It will be coming out and be replaced with a suspension seat.

Maybe some sort of break away seat bracket could be built with shear pins or something that lets the seat break free into a shock absorber or something. Then a solid seat could be safely used.


Use whatever you feel safest with and you won't second guess your choices later. Unfortunately there is a lot of grey area in everything so we don't really know anything for sure. Some people think stiff boots with high tops are safest for your ankles, others think soft pliable low tops are better. Who knows. All we can do is make choices based on both our own and others experiences.




So, next debatable topic...

2" or 3" lap belts in your harness?

2" are supposed to fit in your pelvic void and tighten up snugger which is suppose to be safer.
3" are wider and suppose to spread the load better.

I find the 3" belts rub me the wrong way and are hard to keep positioned right. I'll be switching to 2" at least on the lap belts.

I think this is some info about this debate. My internet works about as well as stock seats in a race car so I can't get it to load. This *should* be info about the belt width.

https://www.schrothracing.com/technology
 

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I'm not old, honest...
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I see the importance of a hard seat but prefer a suspension seat for what I do. I have dropped hard on my frame a couple times (hard enough to bend/dent the frame) and even with a suspension seat it hurts.
I switched to 2" belts for the exact reason above. Soooo much more comfortable.
 

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589 Fabrication
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Discussion Starter #56
I agree that the seat discussion has been beaten to death. To each his own, but I'd be fool not to give my opinion on it as I feel strongly one way. After seeing someone become paralyzed from spinal impact/compaction due to using a solid seat instead of a suspension seat, my opinion became pretty one sided. Reading about numerous others has only reinforced my position.

Sure, your suspension should take most of the hit. But when your chassis takes the hit before the tires or axle hits the ground, it's just you, your back, and the seat that absorbs the hit.

My single seater has a fixed seat in it, a Corbeu FX1. It's a nice seat. It's just not a nice seat for an off road rig. It will be coming out and be replaced with a suspension seat.

Maybe some sort of break away seat bracket could be built with shear pins or something that lets the seat break free into a shock absorber or something. Then a solid seat could be safely used.


Use whatever you feel safest with and you won't second guess your choices later. Unfortunately there is a lot of grey area in everything so we don't really know anything for sure. Some people think stiff boots with high tops are safest for your ankles, others think soft pliable low tops are better. Who knows. All we can do is make choices based on both our own and others experiences.




So, next debatable topic...

2" or 3" lap belts in your harness?

2" are supposed to fit in your pelvic void and tighten up snugger which is suppose to be safer.
3" are wider and suppose to spread the load better.

I find the 3" belts rub me the wrong way and are hard to keep positioned right. I'll be switching to 2" at least on the lap belts.

I think this is some info about this debate. My internet works about as well as stock seats in a race car so I can't get it to load. This *should* be info about the belt width.

https://www.schrothracing.com/technology
You're the first person I've come across that has been a proponent of suspension style seats in off-road racing. My statement of not looking into suspension seats at all, was to avoid the conversation of telling me not to run them. I didn't expect this argument :sonicjay:

This is an older thread, but was a good discussion with some good tech on why to not run suspension seats.


I haven't even gotten into seat belts yet, but will read over that link. I think I remember seeing in the rules that 3" belts were required, but some high end 2" belts were later allowed. More research to do....
 

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suspension for trail wheelers, solid for racers. As long as your belts are properly tightened, you'll stay glued to the seat, basically being one with it, moving with it, and letting the seat take the hit. In a suspension seat, when you compress the seat, the belts become loose, and make compressing your back much easier, and in most cases, make the compression worse.

On another note, @RDK_YJ88 , I was looking at the sparco evoII seats, and saw that the evo line is basically sized according to the series. How tall are you, and how much do you weigh? I'm trying to decide if the evoII will fit me comfortably for my next build. Hoping to get a rig built for the RBOR series and technical wheeling.
 
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