And Then There Were None, BSM (No Dial-up)
07-23-2006, 01:25 PM
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And Then There Were None, BSM (No Dial-up) Well I finally took the body side moldings off. It was pretty easy to do, just took a little time to get through all the double side tape.
I did some searching before I started to get some ideas to make this as easy as possible.
I used dental floss to saw through the adhesive while keeping it wet with 3M adhesive remover. Make sure to get the tape type of floss as it is the strongest.
In no time at all my fingers were killing me from pulling on the floss, so I wrapped about 10ft. of floss on a piece of vacuum line I had. As I used the floss and it started to shred, I would roll it on to another piece of vacuum line. This worked out great.
I did some searching before I started to get some ideas to make this as easy as possible.
I used dental floss to saw through the adhesive while keeping it wet with 3M adhesive remover. Make sure to get the tape type of floss as it is the strongest.
In no time at all my fingers were killing me from pulling on the floss, so I wrapped about 10ft. of floss on a piece of vacuum line I had. As I used the floss and it started to shred, I would roll it on to another piece of vacuum line. This worked out great.
07-23-2006, 09:35 PM
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Finally! Looks much better. Now all you have to do is lower it and you'll be set.
Sorry I didnt call you last night. Bought Katie a car and was tired when I got home.
Sorry I didnt call you last night. Bought Katie a car and was tired when I got home.
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07-31-2006, 12:42 PM
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No, Im not. They channel airflow and reduce rear end lift at speed. This is a fact, and has been wind tunnel tested.
Not to rain on the parade or anything, but.....
Mallett did preliminary studies & wind tunnel tests with Chevy at GM's wind tunnel facilities in Troy, Michigan when they were developing the WC body kits and GM's C5 Aero kit. What they noticed was a difference in rear end lift (or downforce, depending on your perspective) between cars with and without the BSM's.
They found that cars WITH BSM's had better rear downforce numbers with Aero aids and less rear end lift on cars without Aero aids.
- On further investigation it was found that the BSM's greatest advantage was to aid and improve Laminar Flow along the sides of the car. What the improved laminar flow did was prevent the spilling of air off the side of the hood at the cowl. This added downforce at the windshield.
- The improved side body Laminar Flow also reduced the amount air wrapping under the car (in front of the rear wheels and thus reduced rear end lift. Without the BSM's the reduced Laminar Flow and increased Hood Cowl spill resulted in and almost doubled the amount of air getting under the rear.
Note that the laminar flow starts to become effective around 100 MPH and increases after that.
- There is a small downforce componant of the BSM's due to their angle of attack. There is a very small but discernable positive effect above 150 MPH. Like the Laminar Flow there is probably an effect at around 100 MPH but it is very small but builds with speed.
Other things that were assumed but not measured was that the improved Laminar Flow:
- Increased air extraction of the front & rear wheel wells and
- Improved brake cooling
- Improved air extraction from functional side vents
- Improved underhood air extraction from evacuator hoods
So basically, under 150mph, the BSMs keep the airflow channelled away from underneath the car (and the C5 does get a little light at speed) and after 150mph it actually has a positive impact on downforce.
Reduce your speed accordingly.
Not to rain on the parade or anything, but.....
Mallett did preliminary studies & wind tunnel tests with Chevy at GM's wind tunnel facilities in Troy, Michigan when they were developing the WC body kits and GM's C5 Aero kit. What they noticed was a difference in rear end lift (or downforce, depending on your perspective) between cars with and without the BSM's.
They found that cars WITH BSM's had better rear downforce numbers with Aero aids and less rear end lift on cars without Aero aids.
- On further investigation it was found that the BSM's greatest advantage was to aid and improve Laminar Flow along the sides of the car. What the improved laminar flow did was prevent the spilling of air off the side of the hood at the cowl. This added downforce at the windshield.
- The improved side body Laminar Flow also reduced the amount air wrapping under the car (in front of the rear wheels and thus reduced rear end lift. Without the BSM's the reduced Laminar Flow and increased Hood Cowl spill resulted in and almost doubled the amount of air getting under the rear.
Note that the laminar flow starts to become effective around 100 MPH and increases after that.
- There is a small downforce componant of the BSM's due to their angle of attack. There is a very small but discernable positive effect above 150 MPH. Like the Laminar Flow there is probably an effect at around 100 MPH but it is very small but builds with speed.
Other things that were assumed but not measured was that the improved Laminar Flow:
- Increased air extraction of the front & rear wheel wells and
- Improved brake cooling
- Improved air extraction from functional side vents
- Improved underhood air extraction from evacuator hoods
So basically, under 150mph, the BSMs keep the airflow channelled away from underneath the car (and the C5 does get a little light at speed) and after 150mph it actually has a positive impact on downforce.
Reduce your speed accordingly.
Last edited by pakisho; 07-31-2006 at 12:53 PM.
