Yesterday on my first trip out on the autobahn. I was doing about 120mph when the bonnet started to shake. I'm guessing the scoop provides a certain amount of lift at this speed. Has anyone else experienced this? Any cure needed?

 

My classic does this also.
I've purchased some aero bonnet catches but not fitted them yet.
Also on the "autobahn" my bonnet stayed attached at 160 so I wouldn't worry too much

Paul

 

aero catches or bonnet pins bud. the catches look better than the pins.

 

Rodger!! Many thanks.

 

Not the scoop! The air passing over the front of the bonnet turns and increases speed as it passes onto the bonnet. This causes a pressure drop and temperature drop according to classic Benoulli's theorem. The low pressure pulls the front edges of our lightweight alloy bonnets up. At 120mph the outer front edge sits about 1" up from usual. Quite worrying.

I also will go down the aerocatch route but my Hawk is a bit too new to be devalued like that yet.

 

But surely as long as it doesn't/won't flip that's all that matters. Very interesting tho thank you.

 

Had the same myself, wont be as bad once i get a front mount as im gonna fit a reverse scoop. But i still fancy some, where is the best place to get them ?

 

Does it have any slack if you push down on it?

A possible simple fix would be to adjust the bonnet adjusters. The rubber thingies behind the lights are a screw fit that you can raise and lower.

 

Had same problem. Aerocatches sorted it

 

how much did it cost to get the catches fitted tommy or did you do them yourself?

 

Mattyb fitted mine. I dont like cutting holes in my car.

 

Where did you get them from bud?

 

Just as a side note, Scoobs don't like prolonged high speed without FMIC and Oil coolers.

As your in Germany where from personnel experience it gets bloody hot in summer, you might want to look into this if your planning on making it a regular thing.

 

Newbie here FMIC?
I generally don't run at that speed, (the wife gets angry really quick if I do)
70-90mph normally.

 

Front mounted intercooler. The silver bit behind the grill at bottom of my bumper

 

Rgr makes sense. Just wasn't sure of the abbreviation is all thanks.

 

Pic *****.

 

you dont need bonnet catches to devalue a hawk.... just own it... it devalues all on its own.

 

My bonnet was lifting bad on a top speed run so we removed the scoop and it cured it, my car now runs with a reverse scoop and I have never seen this problem since

 

Where you get your hella horns from mate?

 

be carefull if you fit them yourself, lining them up is a pita on a hawker cos of the bonnet shape.

 

Are the locking ones the best?.