Showing posts with label v8. Show all posts
Showing posts with label v8. Show all posts

Tuesday, May 19, 2009

History of the big Technic cars, Part II.

(previous part, next part)

I owed you the next part of the Big Technic Car story for a long time. Here it comes.

The line of flagships was simple and logical from the beginning (1977) right until 1999: a single flagship, the throne was always taken by one of the the four cars introduced in the previous part. They were the largest Technic models and since they followed one after another there was no competition amongst them.


1999 marked the start of changes with the introduction of 8448 "Super Street Sensation". This set broke the tradition in several ways. For the first time the bodywork was made of studless bricks, with the chassis was made of old-style bricks but well hidden. The two types of Lego bricks divide Technic fans since then. The car also started a new trend by focusing on the looks and not only packing features. Unlike the all-wheel drive in its predecessor its V8 engine "drove" the rear wheels only. This was also the first car since the original 956 carrying its engine in the front. The number of gears in the gearbox has increased to 5+1, making it a match for most road cars.

Another first, it was possible to build multiple bodyworks onto the same chassis. As a sports car, it could be built with "gullwing" doors opening upwards or as a "coupe-convertible" with folding roof. As an alternative it could also have an American style hot rod chassis. The doors were opened with pneumatically damped springs.


The lineup has changed fundamentally when a secondflagship, the 8458 "Silver Champion" race car was added. The Silver Champion is in fact a McLaren Mercedes Formula-1 car but it did not carry an official badge at that time. The car emphasises the break with traditions even more: it has less moving parts but a more realistic bodywork including front and rear spoilers. Like all Formula-1 cars at that time, it has a V10 engine and double wishbone suspension on all 4 wheels. It has a differential and steering but no gearbox - its technical content is below the level of the 8865 introduced more than 10 years earlier (not counting the number of cylinders and the bodywork that can be opened).

The diversity was increased even more with the introduction of the 8466 "4x4 Off Roader" set in 2001. If two flagships were not enough now there was a third one. Its size was no match for the other models but in working features it was: besides a V8 engine and the gearbox from 8448 it had an all wheel drive and doors opening upwards. Like the "Street Sensation" the chassis is made of bricks and the exterior from studless elements.

The next set in 8461 "Williams F1 Racer" from 2002. It is basically the rebranded version of 8458: along a blue-white livery and some new parts the biggest change happened in the name: it was an official "Formula-1" licensed product and ran as part of the "Racers" series. The building instructions had about 80% commonality with its predecessor.

The last set is not really a super car, the 8435 "4WD" introduced in 2004. It is nevertheless worthwhile to mention because it sports many working features that would had made it a super car several years earlier. Contrary to its name it had a rear wheel drive with a V6 engine in the front and working differential in the rear. The front wheels had a functional steering as well as an independent suspension. The rear did not have springs at all but the bridge could be bent relative to the body so it made a real off-road impression. This is the first model that did not have any studded bricks at all, consisting of 763 parts altogether. For comparison, the flagship from 1977 contained 590 parts!

Stay tuned for the next episode!

Thursday, April 9, 2009

8880 Super Car

Meanwhile I got a 8880 car in my possession too. I was thinking for a long time which one to get from the many super cars. Although I like the others too, the 8880 is special because it is still made of studded bricks and it has many working parts. Finally I have managed to get one.

The car has so many interesting details that I rather do not spend much time on how it was built. As a short summary, Grandma was here and played with the kids so that I can devote my day to it. At the end I succeeded.


How does it work? First, it has double wishbone suspension on front and rear. On the image above the blue items are the front wishbones. All wheels are driven, universal joints carry the rotation between the wheels and the differentials. The car has three of those - above you can see the front one but there is one in the rear and one in the middle too. In contrast to real all-wheel-drive cars there is no self locking feature, wheels can spin easily. But an owner of a Lego car can live with that.

The above picture also shows the gears of the gearbox. It is more sophisticated than
classic Lego gearboxes: there are freely rotating gears on two axes and moving the lever will attach them to the axles through special transmission rings. This set has 4 forward gears and no reverse but it has a fully functional neutral state. The lever can be operated the same way as on real cars. On the picture below shows the lever in fourth gear.


The car sports all-wheel steering as well: rear wheels steer in the opposite direction and less than the front wheels. It requires a good amount of force, there is no power steering :)


At the end of the drive chain there is a V8 engine driven by a real chain. The amount of moving parts can be felt when we try to push the car - it is much harder than with the 8458 racer. Engine brake is also realistic - the selected gear influences it a lot besides the speed of the pistons.

If you are interested in more visit the album too.

Thursday, February 12, 2009

Pneumatic engines

Less engaged friends sometimes question the meaning of pushing a car to get the pistons moving - in their eyes that's pretty far an "engine". Well, here's something that is surely an engine for them too: the pneumatic engine. The input is compressed air, the output is rotating motion.



There are inline-3 and -4 versions as well as V6, V8, etc.. And what can it be used for? Well, for something like this:



If you would like to know more, I propose this YouTube channel or the http://www.lpepower.com website with a lot of pictures, video and technical data. There is no detailed description, instead you can buy a complete engine for a somewhat hefty price tag: the inline-3 starts from EUR 130.