More Places Available for CSEx2011

There are now a small number of places available for Cairngorm Soapbox Extreme 2011. If you would like to take part, please submit an entry form and full payment as soon as possible.

Online registration and entry forms are available from here.

Construction Tips

CSEx is not like other soapbox races. The course is 2 miles long and has some significant bends which you will approach at high speed. Your cartie will experience high side loads when cornering, which can cause problems such as oversteer, buckled wheels, loss of control or even rolling over.Carties can reach speeds of over 60mph in places,and for the safety of competitors, event crew and spectators we require a high standard of contruction. You can't just lash something together from planks and old pram wheels and expect it to pass the pre-race safety inspection.

Cairngorm Soapbox Timetable

The timetable for Cairngorm Soapbox Extreme 2010 is shown below. All teams must present their vehicle for inspection in the overflow car park of Cairngorm Mountain Visitor Centre between 12.00 and 15.00 on Friday 23rd July 2010. Those living near Stonehaven, Aberdeenshire can contact us to make arrangements to have their machines inspected before then if they wish.

New Course Confirmed

The revised course for Cairngorm Soapbox Extreme 2010 has been confirmed. The fearsome hairpin has been replaced by "The Switch", a brutal high speed right/left combination with an off camber blind apex. We don't call it "extreme" for nothing - at over 2 miles in length and with top speeds in excess of 60mph, there is nothing like this anywhere else in the Britain.

Full details, including a course map, profile, estimated speeds and onboard video of the entire track, can be found here.

Competition Rules Published

The updated rules for the 2010 Cairngorm Soapbox Extreme have been published and are available on the downloads page. They have been revised following a review in the light of experience gained at last year's event, although the only significant alterations are in order to incorporate the new Gravity Sidecar class.

Entry Forms Available Soon

Entry forms for the 2010 Cairngorm Soapbox Extreme will be available on Wednesday 16th December.


All the event documentation will be made available here as a resource for other gravity race organisers. Please feel free to use them as you see fit, subject to the terms of the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 UK: Scotland License. In summary, this means you are welcome to use these documents in whole or in part provided that you;

1) give credit to the original document and its author(s)

Competition Rules

The exact structure of the event is dependent on the number of teams taking part, but the objective will be to maximize the number of runs for every cart. 

A rough outline for the competition is;

The Course


Total Length: 2905m

Elevation at Start (B): 542m

Elevation at Finish (A): 347m

Total Drop: 195m

Average Gradient: 1 in 15

Maximum Gradient: 1 in 6

Estimated Top Speed: 60+ mph

Entry Forms

Soapbox racer at CairngormUnfortunately you've missed CSEx2012, but if you'd like to take part next year then contact us and we'll put you on the list to be notified when entries open for CSEx2012.
CSEx is the longest and fastest gravity race in the UK. Speeds can reach in excess of 60mph, so competitors must build machines capable of being handled safely at those kind of speeds.
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