Quote:
|
Originally Posted by ovalpiston
860bhp is a serious figure..it is really amazing how much they have managed to extract out of a naturally aspirated 5.8l V8 with carbs and pushroad. And i agree with you about the "serious engineering " part,it wouldnt have been possible otherwise.
Yes,the tires which i came across must have been just "show tires" as you say..they were harder than regular production tires and hence my question.But do the teams have the luxury of selecting their compounds for each phase of race according to their strategy? or do they all get one standard compound?
And about F1,each constructor can field a maximum of 2 cars and can carry one extra spare car,they can manufacture a maximum of 4 chasis per year,the engines will have to last for 2 weekends.Like you said in your previous post,to curb the spiralling costs and speed,the engines have been regularly downgraded,today they run a 2.4ltr V8(though the layout can be anything),they are naturally aspirated and produce close to 820 bhp with rev limiter set at 19000,until 2005,these were naturally aspirated 3.0ltr V10 producing almost 900bhp,the cars cannot weigh more than 600kgs including the driver after the completion of the race.Unfortunately,these so called "restrictions" have done very little to help the non-factory cars,most of the private teams have a budget of around 350 million$ per season and that is way short of what the manufacturer teams spend.
When you say multi-car teams ,how many cars usually each of these teams have?Are the manufacturers responsible for only the engines?Who produces the rolling chasis?What exact R&D do each of these private teams do after getting an engine and chasis from the manufacturer? Since NASCAR's doesnt tackle corners,i beleive traction control and launch control are not used or are they? what other electronic aids do the drivers get?Finally,what transmissions do these cars use?Is it completely automatic?or paddle shifting sequential shift or seamless shifts? or is it manual?
|
As I said there is no choice for tires. Teams all run the same tires, same compound all weekend and they are what NASCAR and goodyear mandate. Teams build their own cars or buy from a few chassis builders.
The rpms in F-1 are amazing. One little know fact is the piston speeds are relatively close on F-1 and NASCAR engines. Naturally aspirated engines like certain piston speeds to develop maximum volumetric efficiency. This is also why there was a shift to 8 cylinders when the displacement was lowered in F-1.
Multi car teams usually have 2 to 4 cup teams and one or two Busch teams. The cup teams can have 10 to 12 cars each, I am not sure in Busch but would guess at least 5 cars. A full multi car team could have as many as 50 or more cars but this may drop with the COT eventually. There is no restriction on number of cars built.
The manufacturer only supplies the heads, manifold and block in a cast semi machined state so they can be modified as required by the team engine departments. All other parts plus many manifolds are made by the teams or specialty race part manufactures. The teams build and design the engines within the rules and the available head and block castings. TRD (toyota) has built some complete engines to try to jump start their program but I know of no other mfg doing that. The manufacturers work with the team engine depts and many drag race engine builders and cylinder head specialists to develop the blocks and heads. They then are submitted to NASCAR for approval. Nascar has many specs that the parts must conform to. Chevrolet submitted 3 designs before NASCAR approved their new design. NASCAR trys to keep the engines comparable to prevent one mfg to have an advantage. NASCAR impounds several cars as they finish selected races and dynos them to check the power of different mfgrs.
NASCAR has corners, they are all just left handed except the 2 road course tracks. Some cars used traction control years ago but as soon as it was discovered it was banned. Other than electronic ignition, radio, camera and transponders I don't believe any other electronics are allowed. Drivers must handle throttle control. Chassis adjustments must be manual during pit stops, no electronic shocks etc. They use manual transmissions and final gearing is mandated by NASCAR at each track as a way to control engine speed.
Did you mean to say the F-1 weight was a maximum? or is it a minimum? Thanks for the info on F-1, it is very interesting indeed. I was amazed at the honda oval piston engine too. I love creativity.
beth