- What difference does backsweep make?
Looking at getting some wide flat bars (750mm-ish) for my singlespeed for XC use but not sure how much backsweep I should go for. Yes I know I should try different bars and see, but my LBS hasn’t got any wide bars at all.
What are the advantages of lots of backsweep? Doesn’t it make your wrists twist outwards? How does it affect climbing and descending? Or is the difference negligible? Any experience/views appreciated.Posted 5 years agowwaswasSubscriber
If you lay your arm on your desk and look at how your hand naturally falls you’ll see that it will tend to not be at 90 degrees to your forearm. Most bars with backsweep are just trying to put your hand in that natural position when riding.
I have one bike with 10 degree backsweep richey bars and they’re fine but I wouldn;t rush out and replace all my others with them.Posted 5 years agocompositeSubscriber
I had always used roughly 690mm bars with a 10degree back sweep and found that OK.
When I then moved to using 745mm bars with 10degree back sweep I started developing pain in my wrists over a 6 month period. I tried to go back but from then on I still had pain even with the old bars.
I then tried some Mary Bars 680mm-ish, 40 degree back sweep. Although this solved my wrist problem, I felt that the back sweep was too much and I found them very twitchy off road.
So then I tried the Salsa Bend 2 bars 710mm with 23deegree back sweep and at last found what I was looking for. Wide enough to get a good feeling of leverage but with enough back sweep for my wrists.Posted 5 years agobrakesMember
it’s not really the angle of your wrist… put a pen or something in a clenched fist and hold it out in front of you, a similar distance to the side to where your shoulder is (or further, depending on how wide your bars are). make a judgement about sweep based on the angle of the pen.
NB: I’m not a doctor.Posted 5 years agochrispoSubscriber
Thanks. I did the pen thing but it depends how straight my arms are. It strikes me that 20 degrees of backsweep would be a nightmare for the wrists with elbows out for descending???Posted 5 years ago
The bars I’m looking at seem to be between 5 and 12 degrees, which is far less extreme.DanWMember
Do the trig is the smart ass answer 😀
Truthfully though it is a touch hard to calculate as different bars start their sweep at different points across the bar (i.e. different legths that are straight at the centre before the sweep starts).
The sweep will feel the same between different bars of the same sweep as the angle is the same by the time it gets to your hands but the amount of reach that get shortened will vary between bars of the same sweep (if the sweep starts in different places)… if that makes sense???Posted 4 years ago
Do the trig is the smart ass answer
Thanks 😛 I thought someone might have bars they could measure and save me the effort.
Many large sweep bars actually sweep forwards first to compensate so the reach isn’t effected
Ok, to try a specific example, anyone know the difference in reach between the two models of Salsa Promoto flats or at least how wide the straight section is so I can have a stab at working it out?Posted 4 years agoVan HalenMember
Sunline bars at 720 and nukeproof warhead 760s.
I can use a 90mm stem with the sunlines and a 60mm with the warheads and my hands were pretty much in the same spot in reach when I put one on top of the other. I was quite suprised. The sunlines were fairly upright but not rolled back otherwise they drop and it feels horrid. Actually I hate the sunlines in any position.Posted 4 years ago
The sweep will feel the same between different bars of the same sweep as the angle is the same by the time it gets to your hands but the amount of reach that get shortened will vary between bars of the same sweep (if the sweep starts in different places)… if that makes sense???
Yep, have done some back-of-an-envelope numbers, and a 720mm Easton 9° bar and a 710mm Thomson 12° bar have much the same reach as the Thomson has a wider straight section.
What would be ‘interesting’ (only because I’m planning a new bike in the new year) would be what the effective reach of things like a Salsa Bend 17° are.Posted 4 years ago
The topic ‘What difference does backsweep make?’ is closed to new replies.