More on using bus lanes

Ah right, definitely a hybrid then.

 

That's as near as damn it what I've turned my circa 1992 MTB into.

Except I'm thinking about sticking a Road crank on it so I can run
53/39 front gearing instead of 46/36/26, which is a bit useless for
the road.

 

You won't get it, legally. IIRC the limit is 200 W (think it was
250 W at one point). In some places it can only be electrically-assisted
(i.e. you have to put in some pedal-power yourself) but last I saw that
hadn't become a requirement in the UK.

--
Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

You won't get it, legally. IIRC the limit is 200 W (think it was
250 W at one point). In some places it can only be electrically-assisted
(i.e. you have to put in some pedal-power yourself) but last I saw that
hadn't become a requirement in the UK.

--
Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

Well obviously I'm completely ignoring any legal issues. They can go and FRO
with the utterly dumb **** pedelec and 200w regs. What complete fuckwit
dreamed all that shite up anyway?

 

Some EU ****.
I'm happy wiv my 750W hub.

 

On Tue, 10 May 2011 20:02:48 +0000 (UTC), Ivan D. Reid
<>
wrote in <>:

<duplicate>

Bloody news server...

--
Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

What do you think it takes to heave up a 20% 1 mile climb without pedals,
motor wise?
What kind of motor are you using?

 

I don't think you're in a good position to make this sort of judgement.

 

If my math is right ( don't count on it ) for a 1 in 5 slope (20%), the
power needed is :

Power (W) = Speed (mph) x Mass (Kg) x 0.855

not counting friction or air resistance

 

On the contrary Senor

 

Well clearly it's not. You've only got one of it, for a start.

 

Would you say "if my maths are right" ?

 

Yeah, probably, mebbe, not sure. Doesn't clearly sound wrong. But
that's not the point.

 

No. "Maths" is simply shorthand for his knowledge of mathematics, or
his ability to handle mathematics, both of which are singular nouns.

 

Dunno, as there's no mile-long hill on any route I use. From what I see,
even a 250/350W motor will do that on the right bike/rider, as many of
the quoted power outputs don't take into account peak power - a little
bit of deliberate misleading by makers, in order to keep legal. Peak
power on many of the smaller hubs will reach 500 or 600W.
Asking at pedelecs uk or endless-sphere will get you a more accurate
response, but pedelecs uk tends to be inhabited by tut-tutting arseholes
who bang on about 'cowboy' illegal rigs. Not all of them, of course.

A conhismotor 750W hub.
http://www.conhismotor.com/ProductShow.asp?id=89
I bought the complete kit, with everything but the batteries - hub built
in wheel, controller, throttle, pedelec sensor, battery bag, etc. I
wasn't too impressed with the wheel build and if I was doing it again,
I'd buy just the bare hub and get a wheel built locally.
Total cost was only a couple of hundred dollah, but p&p and duty nearly
doubled it.
For batteries, I've gone for Bosch fatpack powertool lithiums, which
don't have the distressing habit of catching fire or exploding if
they're accidentally over or under-charged.

 

This sort of thing?
www.batterytrader.com/bosch-gsr18vli-gsr18ve2li-28ah-fatpack-replacement-batteries-p-35149.html

 

Perhaps all I need to do is fit a set of decent damped forks? I assume
that's easy enough. What sort of thig would one go for?

 

The price of the 3Ah ones is silly, so I was looking at th 2.2Ah
instead, much more cost-effective.
http://www.a1-battery.co.uk/POWER_TOOLS_BATTERY/BOSCH/TBS043.htm

In the end, I went for NOS genuine Bosch 2.6aH for about the same price.
I currently have four for >10Ah, and will either add two more to the
pack or make another >10Ah pack for reserve, but using the alternative
ones above. I'm not certain exactly what cells are used in the 50quid
ones, so didn't take the risk for the first pack, but if they're totally
compatible with a Bosch charger(as they should be), the chemistry is
probably the same.

 

I wouldn't bother. As other have said, and from my personal
experience, suspension is a bonus off-road, but little use on-road.

To get something light enough and performant enough that they would be
any sort of help, you'd end up spending more than your bike cost.

You also have 700c wheels, rather than 26in MTB ones which limits
choice substantially to what are know as 29er fit forks. These are a
niche market and aimed fully at the enthusiast MTB riders. So cost
accordingly.