BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: B Murphy on 09 Sep, 2019, 23:45

Title: Handlebar vibration
Post by: B Murphy on 09 Sep, 2019, 23:45
Hi

Can anyone recommend good bar end weights for 7/8" handlebars or some other way to stop vibration. There's not a lot vibration but just enough to make my fingers tingle after an hours run.
Title: Re: Handlebar vibration
Post by: chaz on 10 Sep, 2019, 08:50
bike?
does it have rubber mounted bushes? in the top yoke?

if not, there are many types of bar ends, some 3/4" diameter up to 1 1/2" diameter. some aluminium others steel.
they normally have split collets inside so when tightened they grip the inside of the bars 7/8" or 22mm dia.

https://www.ebay.co.uk/sch/Bar-End-Weights-Covers/178002/i.html?_from=R40&_nkw=bar+ends

probably on a Brit you would need steel ones for theweight, might have to cut a hole in the end of the grips to fit.
Title: Re: Handlebar vibration
Post by: B Murphy on 10 Sep, 2019, 15:35
1959 C15, no rubber in top yoke.

Title: Re: Handlebar vibration
Post by: royblackburn1@btinternet. on 10 Sep, 2019, 18:01
Often wondered how bar end weights actually work, do you have to work out how much weight you need?. Roy
Title: Re: Handlebar vibration
Post by: chaz on 10 Sep, 2019, 18:15
copied from the www

Vibration Damping
All internal combustion engines create vibration. Some more than others, but they all do. You'll feel the most vibration coming out of single and twin cylinder engines. Four cylinder engines, by contrast, are quite smooth, though you might notice high frequency buzzing at higher engine speeds in some cases. Generally speaking, the more cylinders you have, the smoother your engine will feel. Engines, of course, are mounted to a rigid frame. A swiveling fork is attached to that frame, and your handlebars are somehow attached to that fork. Without getting too scientific, the engine's vibration travels up through the frame and into the handlebars, which then experience what is known as "resonant frequency." In a nutshell, bar ends help to isolate, or at least minimize the frequency as it is transferred up through the engine. They do this because they are weighted, but we are talking ounces/grams, so there's no need to worry about any detriment to your ability to steer smoothly. Trust their design, and all will be well.