Mark yzf600

hi all just wondering is how can i check my speedometer is giving me a true reading?? the reason i ask is that every time i slow down for speed cameras ( and there are loads of the f***ers around me ) i seem to be going a touch slower than everone else. ie there's a main road that i use quite often that goes from 40 to 30 with a camera in the 30 zone.. i slow to 33-30 and cars start to overtake me ,, i know its not a big problem but it happens every time at every camera and im concerned if i am gowing to slow, some old dear is gonna mistake me for a traffic hump. it could be worst i know,,it could be saying im not going fast enough then get flashed for doing what i think is 30. any ideas would be much appreciated.

ive had the same trouble with my first car. if your battery is old it will charge fully but will not hold a charge completely and start to affect the engine the more power you consume ie brake lights , head lights. buy a new battery ,,if problems persist get a diagnstic done on alternator.

Hello all first of all im new to forum so hello all, im picking up my first bike this saturday which is a yzf 600r tcat. just wondering can anybody recommend a good motorcycle garage in or around Cardiff that can carry out services and mots without me being ripped off. after owning a car for many years i have found out there are a lot of people who will try to rip you off and do shoddy work. ideally i want a smaller firm which is more dependant on his/her reputation, rather than a bigger garage who will let a 16 year old drop out take your engine apart for £120 per hour.. god i sound like my dad next ill be buying a shed. anybody reccomend any good shed manufacturers thanks for any suggestions