what power/speed would you like if no regulations

Electrically assisted bikes, trikes, etc.
stodd
Posts: 350
Joined: 6 Jun 2018, 10:24am

what power/speed would you like if no regulations

Postby stodd » 11 Jan 2021, 6:02pm

I didn't want to hijack another thread but it and our answers made me think;
what power and speed of ebike would I choose if there weren't the regulations?

I very much agree with the regulations as they are; I think they are appropriate to our (and many other countries).
I'm most certainly not one of those petitioning for increased power or speed.
BUT if those regulations weren't there what would I choose for myself? I'm not sure.

There should maybe be some relaxation to make them more appropriate to people with various handicaps.

ndwgolf wrote:I'm THINKING of converting my Santa Cruz Highball CC to an eBike using a Bafang 1000 cc Mid frame motor. I am 63 years old and overweight (120kg). I live in Phuket Thailand where there are lots of fantastic rides away from the crazy Thai drivers but it involves quite a lot of hills that I really struggle on........... so that is the reason I am thinking of converting my bike to an eBike (to take car of the hills so that I can keep up with my mates who are younger and a lot fitter).
Cost wise the 1000cc kit comes in at about £1100 here in Thailand for everything.

Anyway what do the gang think..........good idea or bad?
Thanks
Neil

viewtopic.php?p=1569372#p1569372

hemo
Posts: 886
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: what power/speed would you like if no regulations

Postby hemo » 11 Jan 2021, 11:26pm

With speed comes the need for larger batteries, like wise the controller dictates current = power so in theory more battery wh is used up.
Ideally if starting from scratch I would go 13 or 14s and about 18a for about 730w power if needed. That said my bikes currently output 620w at 36v or over 800w temporarily at 48v using higher current.
Currently one can use any controller rating they wish as the rules do not specify controller power, just that the motor must be rated at 250w nominal power, there are no upper power rating stipulations regarding any temporary power.

Even todays Bosch,Yamaha & Steps can exceed 600 -700w temporary with the 300% assist level.
Once these early bikes were about 40nm and rated 250w, today some of them claim 100nm and still 250w rating. 60 extra nm torque doesn't appear out of thin air so the motors have to be producing the extra power via higher current.

bikercolin
Posts: 164
Joined: 14 Feb 2009, 1:01pm

Re: what power/speed would you like if no regulations

Postby bikercolin » 17 Jan 2021, 5:21pm

I was musing this question whilst out today on my Fazua powered bike. I have ridden around 5000Km since moving to an E bike due to injury.
Whilst more speed is allways attractive, I looked at my average speeds, often over 17mph, with longer rides in the summer over 19mph average. Also now able to keep up with club rides.
With that in mind the power, speed and torc provided by my bike is perfect for me.

Oldjohnw
Posts: 5769
Joined: 16 Oct 2018, 4:23am
Location: Northumberland

Re: what power/speed would you like if no regulations

Postby Oldjohnw » 17 Jan 2021, 5:34pm

At nearly 72 I am perfectly happy with current UK regulations.
John

Antbrewer
Posts: 146
Joined: 1 Jul 2016, 9:14am

Re: what power/speed would you like if no regulations

Postby Antbrewer » 17 Jan 2021, 6:41pm

I am 72 and not far off 73 and I agree with OldjohnW.
As the saying goes,,,,,,,,If it aint broke don't fix it..
But happily we all have different opinions and goals.

peterb
Posts: 51
Joined: 2 Dec 2017, 10:13am

Re: what power/speed would you like if no regulations

Postby peterb » 17 Jan 2021, 7:01pm

I am 73 and would appreciate an increase in the assisted speed cut off to 18mph.

rmurphy195
Posts: 1977
Joined: 20 May 2011, 11:23am
Location: South Birmingham

Re: what power/speed would you like if no regulations

Postby rmurphy195 » 18 Jan 2021, 1:30pm

I'd go with increased speed, up to 30mph - under the same rules as the old mopeds, because you are no longer in the realms of electrical assistance, but in the realms of a powered motor vehicle. Including keep off the cycle paths and out of the cycle lanes etc.
Brompton, Condor Heritage, creaky joints and thinning white (formerly grey) hair
""You know you're getting old when it's easier to ride a bike than to get on and off it" - quote from observant jogger !

kwackers
Posts: 15250
Joined: 4 Jun 2008, 9:29pm
Location: Warrington

Re: what power/speed would you like if no regulations

Postby kwackers » 18 Jan 2021, 2:25pm

rmurphy195 wrote:I'd go with increased speed, up to 30mph - under the same rules as the old mopeds, because you are no longer in the realms of electrical assistance, but in the realms of a powered motor vehicle. Including keep off the cycle paths and out of the cycle lanes etc.

No need. You can already do that.

See them all whizzing around? No.
Because if you're going to go to that much trouble you may as well get a proper motorbike or car.

It's an all or nothing world.
30mph on a bicycle, no insurance, MOT, license etc - yeah that's fine.
Stick a motor on it that won't even get close to that without help from you and suddenly everyone is up in arms.

Bonefishblues
Posts: 8709
Joined: 7 Jul 2014, 9:45pm
Location: Near Bicester Oxon

Re: what power/speed would you like if no regulations

Postby Bonefishblues » 18 Jan 2021, 2:31pm

hemo wrote:With speed comes the need for larger batteries, like wise the controller dictates current = power so in theory more battery wh is used up.
Ideally if starting from scratch I would go 13 or 14s and about 18a for about 730w power if needed. That said my bikes currently output 620w at 36v or over 800w temporarily at 48v using higher current.
Currently one can use any controller rating they wish as the rules do not specify controller power, just that the motor must be rated at 250w nominal power, there are no upper power rating stipulations regarding any temporary power.

Even todays Bosch,Yamaha & Steps can exceed 600 -700w temporary with the 300% assist level.
Once these early bikes were about 40nm and rated 250w, today some of them claim 100nm and still 250w rating. 60 extra nm torque doesn't appear out of thin air so the motors have to be producing the extra power via higher current.

They end up looking like these, I expect:

https://www.motorcyclenews.com/advice/b ... otorbikes/

reohn2
Posts: 40674
Joined: 26 Jun 2009, 8:21pm

Re: what power/speed would you like if no regulations

Postby reohn2 » 18 Jan 2021, 4:30pm

Worth a watch:- https://youtu.be/wM8Xli2KTzI
PS,draw your own conclusions.
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hemo
Posts: 886
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: what power/speed would you like if no regulations

Postby hemo » 18 Jan 2021, 4:45pm

Any one can legally have 30mph ebike if you are willing to insure, tax and get it tested. It means though you also need a motor cycle helmet. By the time one does all this it is easier and cheaper to insure a moped.