PimpMan wrote: ↑
Feb 08, 2018 7:45 pm
Currently i am in the market for new light weight bicycle 15 pounds, so road bicycle is the number one choice,
My ride style is commuting, i am doing food delivery on a bicycle, i don't care much about, top speed and aerodynamics,
These two things are absolutely inconsistent with each other. First off, any bicycle within five pounds of the 15 pound figure you cite is going to have exactly the riding position you're trying to avoid, and it will be limited to tires so narrow that they're not streetworthy.
Here's what you do to get reasonably close to what you describe. Find a carbon MTB frame that's the tallest size you can stand over comfortably, and add a rigid carbon MTB fork. To have close to a racing road bike total weight, you'll need carbon wheels and cranks too. And probably carbon seatpost, stem and handlebars. Use bars that have rise built in, but to get an upright riding position you'll probably need a threadless stem riser:
When it's all said and done, your bike will be nice and light, but not cut out for a working life on the street. Carbon parts don't tolerate nicks and scratches at all well. Also note that super light frames don't usually have any mounting points for racks. So if you're using one of those big Favor backpacks, you can make it work, but otherwise you'll have to capitulate and get a real bike frame.
If you are using a backpack for deliveries, that's where you should start to work on your back and neck pain. Put the load on the bike instead. That might be all you need to do.
For what it's worth, the worldwide consensus about what shape of handlebars works best for utility and delivery cycling is more or less this one:
dogman dan wrote: ↑
Feb 15, 2018 7:04 am
BMX type handlebars is what you need.
Not for eight hours a day-- they don't have nearby enough rearward sweep.
On the plus side, BMX bars allow quite a bit of reach adjustment by tilting them slightly forward or back. So they're great for finding a workable amount of reach. But for endurance riding, you gotta have sweep between about 20 and 75 degrees, or else you need a multi-position bar.
One of my friends rode from Austin to Virginia and back on a mountain bike with BMX bars, but I had added clip-on aerobars to the top crossbar. That gave him another place to hold on, with important position changes not only for his hands and arms, but also his back and shoulders.
When I went touring with BMX bars, I added ski bend bar end extensions to give me more positions. But I still hurt my hands on that tour-- didn't get all the feeling back in my thumbs for several weeks after.
The fingers wrote: ↑
Feb 15, 2018 1:03 pm
Try rotating the handlebars up 180° until they face backwards.
That's called "DUI bars", and they come with the corresponding reputation attached.
Back when MTBs were the only kind of bike anybody wanted, all the $10 pawnshop and thrift store bikes were ten speeds. So a rotten alcoholic who had lost his license and probably also his car would go buy a ten speed for ten bucks, slam the seat down all the way to the frame, flip the handlebars over, and ride the thing on the sidewalk at 3mph while smoking a cigarette. That's the cultural memory you evoke when you flip drop bars upside down.