Posted By Descarte Looked into this whilst working for the police, unfortunately left before monitoring was completed. Would presume unless you were riding acrross very uneven roads, had no suspension/dampening on front forks for 8hours every day a week then you would not be getting near the exposure limit. Our forklift guys driving around outside dont get that much 8 hours 5 days a week and I bet they are bumpier than your bike. On a seperate note my mountain bike would probably give a higher reading whilst I am out biking on the weekend, but you can bet your as that I dont spend 8hours a day 5 days a week on it, if I did I would probably be entering the tour de france. Just make sure you have some nice warm dry gloves :-)

Posted By Descarte I think the RMS from such small movements in vibration would be negligable, but again also consider the amount of time per week you will be riding. If you are still in doubt contact the manufacturer

Posted By Phil McC Howard, My own experience, particularly with modern big 4's, is that vibration is no longer the problem with M/cs that it once was. Small bikes and quads may be a different story so if you are working on a golf course ... A bigger concern for me might be my own experiences with helmets. Some of those that I have worn are unlikely to meet the previous Noise Regulation with regard to wind noise on unfaired bikes and I think a lot more might come into scope of the new regs. But you try getting dispatch riders to wear poncey ear plugs even if they are mandatory!

Posted By Howard Thanks for the responses. Phil, I ride a horizontally opposed twin, may have to look at another straight 4. Wind noise is also a problem dispite wearing the supposedly quietest helmet & earplugs, I'm sure my tinitus is becoming worse. Linda, cant wait!! Thanks Howard

Posted By John Lewis You lot are making up your own jokes here. It was the vibration aspect that caught my eye on this thread. Knowing the levels of vibration on a bike would give me something to compare my findings with and help me advise some of our motorcycling polishers. I've been doing research with some of our guys who do hand polishing, honestly! They have been using different gloves from thick heavy duty rigger types to thin cotton knits and Kevlar/leather mix gloves. Their experience is that thick gloves make the vibration problem worse because they have to grip the item tighter and hold it harder to the mop or linishing belt. A thinner glove, which "common sense" says will be no good provides the right balance of grip and feel so that it is comfortable to use and wear. Perhaps the same applies to bike gloves where the thicker the glove the harder the grip required and consequently the more restricted the blood flow to the fingers. Just a thought. John

Posted By Paul Adams Howard, The days of the old two stroke that revved like crazy are just about gone. Flat twin suggests a BMW - big bore, short stroke (ish), low revs. I personally ride a flat six (GL1800), vibration - what vibration? Super smooth, loads of torque. I also have "ISO Grips" sold by a certain after market custom company which effectively place a layer of rubber and air between the handlebar and the grip, looks very smart too. Hi revving mutli valve in-line fours may be a different story, haven't ridden one for a long time. Really though, I believe the issue is with the rider. Those who have a "death grip" on the bars get all the vibration transmitted from the engine through the frame. Bar end weights are supposed to help (for certain bikes) and dampers/risers for the bars are available which also help. The key is to have a relaxed grip on the bars and guide the bike, rather than physically heaving it round bends. So for those who ride for a living it largely comes down to riding style. I would recomend the advanced rider training from whichever source. Regardless of how sceptical the rider, it will have some positive impact on their riding style and skills. Ride Safe. Paul