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Lego 8448 Street Sensation Tactical/Utility Edition
My modified Technic 8448 Street Sensation. Includes motor, ratcheting winch, magnetic door latches, rear pneumatic jack, and pneumatic spoiler.
About this creation


This gullwing Street Sensation includes a motor, ratcheting winch at the rear, retractable rocket launcher, magnetic door latches, a rotating display base, and an air system which powers the spoiler and a pneumatic jack at the rear (for lifting the car off of its rear wheels).

If you're familiar with this set you may notice that the air-cushioned spring shocks have been removed. Leaving the doors closed gradually broke the spring collars, making the shocks useless. I'll have to replace them. If you've got this model, I'd recommend against leaving the doors shut with the shocks in place.

These pictures were taken with a Canon PowerShot A560. Pretty cheap, does what it's asked.



From the front.



From the side, on its display base.




An interior view of the cockpit. The white handle in the foreground is the valve on the driver's seat, which controls the rear pneumatic jack. The large yellow cylinder in the background is the hand pump for pressurizing the air tank.




The passenger's seat has been removed and replaced with the air-pressure controls. The blue hose connected to the valve on the left leads to an air tank behind the right front wheel. The valve lets me pressurize the tank by using the hand pump, or by connecting an external compressor. The black hose that looks like it's going nowhere is actually hot-glued to the white cylinder pointing outward. The cylinder makes an airtight seal with the black beam that holds it, letting me use the last bolt-hole on that beam as a nozzle. I took apart the external compressor a while back, but I might build a new one.



The rear, with the pneumatic jack retracted.




The jack extended, with the rear wheels running. This is basically what I built the jack for - so I wouldn't always need the display base to run the wheels in place.




The back of the car, looking upward into the trunk with the jack extended.





A view of the magnetic door latch on the right side. The red and gray 1x1 round plates each contain a Radio Shack 1/8" Rare Earth Magnet.




Looking back along the right side of the car, the gray 1x1 round plate from the above picture is dead center, with the magnet visible. I highly recommend them.




The spoiler, with the pneumatic mini-cylinders extended. The two cylinders are connected by a regular LEGO axle, with a length of 1/8" diameter aluminum tubing over it as decoration. I also used a piece of this tubing on the shift handle.




And retracted.














The first ratcheting winch I designed, since replaced with one that fits in the trunk. Photos below.





The pneumatic tubing in the trunk - the top set of T junctions leads to the spoiler, the bottom set to the jack.












Here I removed the decorative red plates in the trunk to get a better look at the cylinders that power the jack.















The display base. I put an 8-tooth gear on the axle that turns the worm gear, and a 24-tooth gear on the control-wheel axle. This provides faster rotation than simply turning the worm gear directly. The bolts at the ends of the vertical yellow beams lock into the car's frame from the outside. They're a little bit of a hassle to access, but they work fine.






The air tank behind the right front wheel.





The gear shifter.




The antenna, purely for decoration.










The retractable rocket launcher.











The new winch. This was one of the hardest mods I've done. The car was already complete. So I had to figure out how much space I had in what directions and locations, design the mechanism, fit it in, find out that something didn't fit, take it out, shrink it, repeat the last four steps about a dozen times until I got a perfect fit, try to cram a little vertical structural reinforcement inside the winch without making it bigger or interfering with any of the movement, replace the main pneumatic lines for the jack and spoiler so they could go around the winch, and break the winch down into separate parts since it couldn't all be installed at once. But it works beautifully.















The first photo shows the ratchet from behind. The second photo shows the spooling axle, from the left side and above. The last shows the wheel on the front.

To use the winch, I hold down the lever that extends out from the side. This opens the ratchet, allowing me to pull out the tow cable. Once I release the lever the ratchet closes and the cable locks. To retract the cable, I simply turn the wheel on the front towards the yellow arrow on the white 4x1 brick below it.





The bolts that will lock the winch's support beams into the car's chassis.





The back of the 8448, partly dismantled to prepare for installation.












On the left, the rubber band which will replace the white one after installation. I did this because using a rubber band with one end mounted to a rotating axle (as the white one was) can cause it to snap after prolonged use. On the right, a new handle for the spoiler valve in order to make room for the spooling wheel.













Installation. In the first photo I've removed a few parts that have to be installed after the main body of the winch.




The spooling wheel, in the center rear of the cockpit.



The ratchet release lever, its end resting just behind the right-side door.





The new storage hanger for the towing hook, with the dispenser for the tow cable.




A side view which shows the tow cable running between the pneumatic jack cylinders.






Comments

 I like it 
  August 10, 2009
wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow make a vid
 I like it 
  May 5, 2008
WOW that street car looks really mean! I think that the back stand is the best bit. See ya!
 I like it 
  December 3, 2007
amazing! can you post a clip of it?
 I like it 
  November 18, 2007
cool, does the set come with a motor?
 I like it 
  September 13, 2007
woahhhhhhhhhhhhhhhhh
 
By Metreon Cascade
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Added September 12, 2007
 


LEGO models my own creation MOCpages toys shop Lego 8448 Street Sensation Tactical/Utility EditionTechnic


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