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Racing my 1970 Series 4 Seven, then having a Bonnet Latch break


snettleship

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I was racing at Roebling Road near Savannah Georgia. The Series 4 Seven has a "pin" that goes down into a "latch" which you open and close with a spring loaded lever under the bonnet. I also have two (one on each side) of the old rubber bonnet hooks to keep it stable.

 

Also on my car, the bonnet is a fiberglass shell, that pivots at the front. It has been modified so that it can slide out easily to be removed. This works great when working on the car.

 

Well, while running a race, the metal latch broke :willy: causing the bonnet to not have the required "fore and aft" support. This turned into a bad combination as you can see here... http://www.youtube.com/watch?v=nnHI4H-ZbFQ

 

Apparently, lift off at 90+ mph can get as the kids say now.... "big air"! But, myself, the car and the bonnet survived (except for a few cracks and some gel coat cracks) to race again 3 weeks later. What have we learned.... check all fasteners every time! :iagree:

 

Scott

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Hey scott. Glad you made it out OK. That tire wall was getting pretty close. Good thing the sand was there.

 

Not to laugh at the situation, but I love your reaction to try to catch the hood. I did the same exact thing when my hood almost flew off at the dragon.

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wow, good outcome.....

 

That happened to me a while ago. I wish I could say the latches broke but, alas, I just forgot to close them :rolleyes:

 

Unfortunately on a Los Angeles freeway the bonnet rather looks like this :cuss: ( 2 trucks giving it a fancy shape...)

http://www.usa7s.com/aspnetforum/upload/1707093252_BonnetCrunch.jpg

 

Somebody suggested I should sell it on EBay as a piece of art.

 

Gert

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Lovely driving up to that point, nice lines, little wasted track.

 

Looks like it really started to go around the 7'40" mark.

 

How long did it take to get all the f*&%ing sand out of the engine compartment?

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awesome drive...very smoooooth. good for you...:hurray:

what was the blue car with orange stripe?

very cool right untilll. OG #$^#!!

yeah, thank god for the sand...and tire walls are harsh but forgiving.

we had a rear hub carrier bust one time while racing the sprite. i was doing great just passed a tr3 when...SURPRIZE...my car wildly spun in the middle of a straight doing about 80.. i was clueless of what happend as a sat there stunned on the side of the track,,till a cornerworker about 100 yards up the track held up my wheel and axle. Later the guys following me came up and said.."we thought oh crap this is going to be bad" when they saw the wheel and axle slowly leaving the car...i never knew it till the spin. but yeah thank goodness for the safety stuff at the track. :iagree:

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  • 2 weeks later...

Sorry, for lack of response, was away for a while......

 

- in the S4 there is a pin at the top of the bonnet that you push into a "latch",

 

--------------------

--------****-----

-------***** ----

--------****-----

--------------------

 

so, when when pin pushes into this, the sping "catches the beveled pin" and holds the bonnet down. This is also spring loaded so it will "pop-up" easily. That "latch" broke in half and the spring lifted it up. I have 2 rubber latches on each side as backup. unfortunately, under heavy breaking, with the broken latch it slide forward the inch or two to get it out of the slot that the bonnet fits into at the front of the car. Since the rubber bonnet hooks are flexible "left/right", that's what caused the whole thing to up over my head (thankfully).

 

- It's easy to see on the camera the bonnet vibrating a little since it is mounted on the roll bar. It always moved a little, and it wasn't as obvious at driver's height. You bet I'll be looking more carefully now!

 

- Racing there again 2nd week of December. Installing a hopefully fail safe for this problem to connect the bonnet to the scuttle.... https://www.europaspares.com/BRIGHTWORK/FASTENERS/QUALITY_LEATHER_BONNET_STRAPS___BROWN___LCSBRL__1853.html

 

- Let's see, what else. The blue car is a Chevon B-8 Coupe. Not sure of the year

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Another thing for you open cockpit folks.... It was a good thing I was wearing my arm restraints. I don't know if I would have raised my arm up any higher if they were not on, but I'm glad I didn't need to find out.

 

Funny thing is that I never remembered letting go of the steering wheel.

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