Comments on: Bike makers take automatic transmission for a spin

New "Coasting" system from Shimano is designed for people who don't exactly see themselves in Tour de France.

[extinctone]

"New"? Systems like this have been around for decades.

And the funny thing is that casual riders are even less equipped to deal with the extra weight and resistance the add than experienced riders. Don't expect this to change the world.

[Jess McLean]

Can you see the future?

If not, why should I (and anyone) have to believe your claim? Oh, if you do see the future, show me the next hot stock for the next 3 months.

[Dachi]

Good Point

I believe you are correct that casual riders are less equipped to deal with the extra weight and resistance.

One of the biggest mistakes I see people make that want to get back into biking is that they go to Wal-Mart and pick up a big steel mountain bike with ultra soft front and back suspension and big soft mud tires that weighs 50 lbs.

You would expect they would be using such a beast to drive down Mount Fuji but they never bother to leave the pavement.

I drove one of these and just going 8 MPH was hard work, if I tried to sprint on the bike the soft shocks absorbed most of my energy. It was tiring but you could not stop because the wide, super soft knobbie tires would barely coast.

Just changing bikes (to a Cyclocross, not even a pure road bike) nearly doubled my average speed from ~8 MPH to ~15 MPH with the same level of effort.

[Dachi]

Why not add a power-assist motor?

Scooters (the motorcycle) and mopeds are in the > $3000 range with the Segway.

You can get the the cheap electric scooters from places like Wal-Mart for $100 but they don't handle very well and I don't think going too fast on something with roller skate wheels is really a good idea.

http://www.revopower.com/ has a 2 stroke power assist wheel that you can fit on your bike for ~ $300 but it is not on sale yet.

The Revopower has yet to be seen, but few of them really make very good solutions for commuting.

I make better time on a Trek XO1 than I would with most of them and I don't wear spandex to do it.

My only major complaint about commuting on the Trek is that hill climbs are never much fun and they cost time.

I average about 15 MPH, the "prosumer" crowd you see in spandex with $3500 worth of gear average over 20 MPH and the professionals are closer to about 30 MPH.

Considering I had a 50cc motorcycle with 9 HP that would sustain 60 MPH (Aprillia RS 50 http://www.aprilia.com/modelli/road/modello.asp?id=71
) it really wouldn't take much to give a road bicycle enough extra push to bring most people's commutes to work within range.

I think a 1 or 2 HP electric engine on a bike would make it as fast as needed without being unsafe to drive for most people and wouldn't require too much battery weight.

The RevoPower site says their 2 stroke engine is 1 HP, 15 lbs, 25 cc, and will do 20 MPH without peddle assist.

I guess that is in the ballpark but I am a little surprised to see it take till 2008 for such a product to hit the market.

[ralfthedog]

We could call it a moped!

Lets put a computer on board to handle the steering as well.

[open-mind]

http://lrbikes.com/

Been a commercial product for years.

I think I prefer a mechanical system that lets centrifugal force do the shifting. Simpler and no batteries required

[zboot]

Umm. . .a dynamo does not require batteries

It generates the power on its own. . .or is that what you were talking about?

[herby67]

No good

A centrifugal force shifter does only take one factor in account (speed) when selecting ge4ars, and not the other equally important one (pedal force). In an automatic car, when you press the accelerator it downshifts, because the more power you apply, the more acceleration you want, and downshifting gives you more torque at the wheels. A mechanism based on centrifugal force will apply the same gear when coasting at a set speed or when trying to accelerate from that speed, and even worse, when trying to climb a hill at that speed. And that's simply not good.

[imacpwr]

Lance Armstrong wasn't setting speed records..

He was winning The Tour de France.. (7 times)
Now if you wanted to make a plausible comparison then you should
have done it with "John Howard". He set a land speed record of
152.2 miles per hour (245 km/h) July 20, 1985 on a pedal bicycle
on Utah's Bonneville Salt Flats.

[kolding]

Silly nitpick

Ok, perhaps they should have written "Don't look for Lance Armstrong to win any races...".

Or were you just trying to brag about your trivia knowledge?

[Lucky Lou]

A tip: how about less than $450-700?!

Maybe more adults would ride bikes if they could afford them!
That's a bit too high of a price for entry-level prospects.

[yesmanno]

this is PERFECT for us fat, lazy Americans...

isn't it?

[herby67]

Actually

Yes, it is. But not for the reasons you imagine.
An automatic system makes you burn MORE calories, not less. By engaging in the right changes, it insures the user is pushing at optimal speed and strenght, releasing maximum power, and that translates into maximum energy burnout. Pedaling very fast with little resistance or very slow with too much resistance burns less calories. Add to that that the system is probaly consuming some additional energy to work and you have a perfect combination.

[Hardrada]

It sure is.

The need to put out a bike with and extra-wide seat that can support our 300lb average load.