The recommended tension for a wheel can be as low as 80kgf (kilogram force) or as high as 130kgf. It is best to set the tension to the highest weakest link in the system will allow, In most cases this will be the rim, the only way to check this is manufacturers specs. Alot of people will run very high spoke tension on trials wheels as they take so much pounding, that is ok but if you run a plain gauge spoke with no butting the rim will flat spot very easy. This is due to trials rims having no depth. My advice would be to run a good quality spoke (double butted) and keep the tesion high.