I cant find any data on how strong seat belts are, i know we used them to lift heavy motors, but i made a set of limit straps yesterday from a set of lapbelts it allows me to adjust the straps to tight for at the track and slack for on the street, i just wonder how much force they will actually get when my front trys to lift. i need the ease of adjustability due to my coil overs also being adjusted at different heights between the slicks and the street tires. does any one know if the front will try and lift with more force then a seat belt or a pair of seat belts can handle?

 

Post up some pics!

 

ok let me go out side and see if i can get some pics with out having to take the wheel back off.

 

ok i had to take the tire off. as you see i can use the adjuster on the lower buckle to set tension.

 

Well I dont think any of us have the technical data for the seatbelts, so your just going to have to try that contraption for yourself and see what happens.

 

Interesting. Keep it from rubbing and it should work out. Nylon will get weaker with age and it may get weaker with a load on it, but it looks like it may work.

 

yeah i searched and it seems that people have had good luck with straps , but they used thicker ones, i have used seat belts to lift engines at junk yards before so i know they are pretty tough, just not sure how tough.
well they was free so i guess if they last a little while i can always snag some more from a junk yard.

 

wow that is one hell of a contraption.....Keep us updated on it though..

 

i will, i have slow motion video of my car launching before and i will make sure to get video of it after and of course compare my 60 fts.

 

way to think outside the box. I like it.

 

If they work good you could possibly upgrade to some ratchet style straps.

 

i was thinking about that, i was just worried the big ratchet assembly would be flopping around. but i could install eyelets and just use the ratchet strap at the track and remove it

 

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If that snaps and breaks, what will happen?

Will the car jerk wildly to one side?
Can the straps get caught in the hubs and bind that wheel?

 

lol someone has to be the guinea pig I would think if one snaps it wil definately get interesting, especially if he has them cranked down rather tightly.

Me personally I would NEVER do something like this even if it was somewhat safe, but that is just me.

 

Maybe he can attach it to the upper a-arm instead of the lower. I dont see how that would not work and if it does snap it will be short enough that it would not get caught anywhere.

 

If the strap snaps, It will probably put more weight on the wheel still strapped and make it hook harder. It probably wont be drastic, but it wouldnt hurt to try it with one strap in a controlled environment to see what the potential results would be. My thought is that it would probably break at launch when the suspension is trying to unload the worst and it may make it try to pull., It may just cause "torque steer". I do like the thinking outside the box.

 

should work.....if its going to break it will prob break on the upper shock tower side where u have the belt bunched up and going through the L bracket. might be a sheer point.

 

Interesting. However, its only for the launch so if something does go wrong, you wouldnt be at high speeds.

 

I don't think the upper strut location where you are attaching it up top is strong enough.

You need to reinforce it before you mess up the upper shock tower.

BTW, a lot of racers just get a piece of metal rope, go through both of those holes, around the upper control arm, then loop it back up through the holes and get the u-bolt contraptions to hold it together. Seems to be a much safer alternative and not a lot of $

 

Dont worry you will be fine with this setup. I saw this on real homemade turbo.com told a buddy of mine to try it out. He did. Before he was running 11.2s all day. Next time out he ran 10.99 @ 130. I will be doing this myself to see the differences in 60 and et.

 

use aircraft cable and the clamps made for it, its not that much more money and safer.

 

Does anyone have pics of how they attached the aircraft cable. I am realy interested in doing this!!!

Also what size cable are they using?

 

i read some old post on this and every one says that a little slack works best , so if one snaps it will only be at launch cause the car will settle back down right after that. the top of the strut tower seems strong enough after all its where the strut mounts and is pretty thick. if the weather is ok i will test at the track tomorrow.

 

like the guy originally did on RHMT i would put the upper link between the top hat and the body.

do you think that bracket/wheel well is going to hold up well to the stresses?