ALL of us, at one stage or another, feel the need to get out of Hongkong. Mr Philippe Rahmani is desperate to leave the territory, and who can blame him, given that his two-year motorcycle journey around the world depends on his swift departure. Mr Rahmani, after having spent 49,000 kilometres in the saddle of his modified BMW R100 GS without any major damage, has run into money troubles in this most money-orientated of cities. ''I suppose in many ways I have run out of finance in the best possible place. For raising funds, Hongkong is excellent,'' he said. Frenchman Mr Rahmani is trying to secure enough sponsorship to continue on his way. His odyssey began in April 1992, when certain sponsors decided to back his around-the-world journey, one designed to celebrate European unity and to help deprived children. The promise of enough funds to see him through the two-year trip and a bike and equipment supplied by BMW kept Mr Rahmani on his way until lack of sponsors' funds stopped him in his tracks. ''Suddenly, I have no money,'' said Mr Rahmani. ''So, I must try to get some here.'' Mr Rahmani's bike is pretty much the straight up and down version of the R 100 GS. Special modifications are limited to an oil cooler to combat the effects of searing desert heat, beefed up springs on the front forks, a custom-designed rear shock care of Ohlins, and increased flexibility in the universal joints of the drive shaft. The metal tubing protecting the engine and faring, the mono-seat and the increased capacity 35-litre fuel tank were fitted by BMW from a standard kit called the ''Paris-Dakar'' option. The bike looks great and, according to Mr Rahmani, is a well-behaved steed as long as you treat it carefully. ''The bike isn't particularly powerful, but the engine is extremely reliable.'' It is not at all like Japanese bikes. The gearbox is very heavy. ''But it is comfortable to ride and easy to maintain. You can do most minor repairs yourself,'' Mr Rahmani said. There are, however, things a man can do nothing about. ''I broke the universal joint on the driveshaft in Thailand and that was a big problem. Two friends brought the part out from France - and then stayed. I had bit of a holiday. I mean, if you are going to break down, there are worse places to end up than Phuket.'' Mr Rahmani is a self-confessed careful rider, never pushing the bike too hard, and never taking unnecessary risks. His main worry is that he might crash and be seriously injured, so he protects himself with a BMW-designed Gore-Tex/Kevlar suit and a BMW System 3 helmet which can be worn full-face or without the jaw guard. When the temperature soars above 30 degrees, Mr Rahmani abandons the suit, but never rides without the helmet no matter how sultry conditions become. ''I don't want to find myself needing serious medical attention in an undeveloped country. I have had a couple of crashes due to bad road conditions, but I was never going fast enough to do myself or the bike any real damage.'' The next leg of Mr Rahmani's trip through China promises to be the most expensive. He must pay the Chinese authorities up to US$390 per day for his passage through the country, hence his urgent need to find new sponsors. ''Anywhere else and I would be okay, but, in China, I have to make a big payment straight away. I've just obtained $3,000 worth of sponsorship from Perrier in Hongkong, and that's a great start, but I reckon I'll need $40,000 to complete the journey.''he said. Any individuals, corporations or organisations wishing to help Mr Rahmani can call him on 526-5936, or fax 810-4463.