I'm a week away from school holidays and want to build a track. Can someone please give me some basic dimensions for width, straightaway length, jump height etc it would be a huge help and it would be greately appreciated

Well, what scale vehicles will you be running on the track and how much space in total do you have available?

Lane width usually 8 - 10 ft wide depending on how many cars will be running at the same time.

Jumps are all about angle. You can have a jump that's 4 feet tall but very steep, or a 2 foot tall with a shallow angle. You'll fly further and faster on the 2 foot one compared to the 4 foot one.

Some other ideas for actual shape and stuff can be found in this thread: http://www.rcuniverse.com/forum/m_8792104/tm.htm

Good luck and let us know some more info mate.

The scale is 1/10th and ill usually only have me driving on the track
as for area, i have 10 acres i can use so thats not an issue, but on the other hand i'll be building most of the track by hand
also, i was thinking of having the straight about 30m long, is this a good length or do i need more or less

Thanks