Many. many thanks to Julian Edgar for his
articles. The HPV building series is destined to be a definitive text on the
subject of suspended trikes (I hope).
“Poorly-researched, crappy and factually
I just want to say the article by Michael Knowling
about the Saab 900 "Enduro" was about the most poorly-researched, crappy and
factually incorrect piece of automotive journalism I've ever read. Pass it along
to him if he hasn't died of his own incompetence. If he'd like a detailed list
of why he sucks I'd be more than happy to itemize my reasons.
That article was first published nearly 10
years ago and has been read by countless thousands of people, including (at the
time it was released) by the owner (and modifier) of the car that is described
in the story. You are the first person to ever complain about it.
I run a Celsior as the family car , loved your
Road to change articles and such , especially the humour style
[ crawl !! ]
Anyhow haven't just fitted a ucf21 rack into my car the steering is even a bit
lighter than it was , was always intending fitting one of your pulse adjuster
kits but now it is a necessity. Would it be possible for you to send me an exact
wiring diagram..please with flowers !! Thanks in advance.
We don’t give individual tech advice but
Mapping Power Steering Weight describes the process in
hi, i was wondering if you could help me out with
a couple technical questions. i read one of your articles, "Cheap and easy 5V
supply" and have a couple questions.
i have a 16x2 LCD screen that needs a 5V source to
connect for my car. So i could simply replace the 2pair resistors with a pot,
connect the positive output wire of the phone charger adapter to my LCD screen
and it'll work fine? For the 2 pair of resistors you need to remove, i don't
understand how you see 1 side of them joined one another and the other side
going their separate ways. are there tracks underneath the board or something
b/c i don't see anything from the provided pics. instead of using a mobile phone
adapter, could you use a +12Vdc to +5Vdc USB cigarette adapter and use the
positive output lead on that?
You should be able to use it to power the LCD
and you can use a USB 5V converter instead if you wish. All printed circuit
boards have tracks, usually on the back.
Your article Diesel or Petrol or Hybrid, 21 Nov
07. You stated " the Honda Civic Hybrid is hamstrung by the primitive way it
mixes electric & engine power" without any explanation. I'm torn between
buying the Civic & the Prius. The economy is close to the same 4.4 versus
4.6, I feel the Civic rides & drives better, and the 8 year battery warranty
is almost the clincher, but I don't think I can live with the baby poo yellow
interior. To make it harder to choose the Civic at 33k is $4400 cheaper than the
Prius at 37.4K. In what way is the Honda IMA system primitive? Please explain
In short, the Honda system requires the petrol
engine to turn whenever the car is moving.
LED Bike Lights
I have read the articles on LED lights for
bicycles/recumbants and was wondering if they (side and read LED flashers) could
be modified to flash 2 groups of LEDs alternately instead of havig them blink
simultaneously. I commute by bike around Sydney and all of the rear lights I see
have this facility. It would be good to use a couple of cree or seoul red LEDs
with 40 degree lens as rear lights rather than the regular range of bike lights
available. (Although, apparently a new light in the USA uses a combination of
alternating wide and narrow beams to better draw attention ot the rider
. Would this be possible with a relay or the like being added into the
equasion - I'm not very electronically minded so you will have to excuse any
ignorance on my part.
We’d suggest that you use the eLabtronics
Pulser pre-built module to flash the lights very fast, eg 5 times a second at a
short duty cycle. With that approach there is no advantage in having one set
flashing alternately with another set. See
Bike LED Lighting Power!.
I found an interesting article on times online and
thought it had a direct relevance to the future of driving: http://www.timesonline.co.uk/tol/news/environment/article4133668.ece
Its pretty cool - they have engineered e-coli bugs
so that they eat straw and excrete petrol!
its early days so they have not set up a factory
yet, but they will soon. so lets not stress too much about running out of oil,
as human ingeneity has shown the way!
Now if they can make one that eats carbon dioxide
and excretes o2 then we are sorted!
Regarding 'Brake Specific Fuel Consumption' Issue:
475 10 April, 2008, theres a typo in the imperial units which it lists as lb/hp.
Hp is a unit of power, not energy. A minor quibble, and a fantastic read
otherwise. Its interesting that a lot of literature reports Wankel engines as
having better specifc fuel consumption in comparison to conventional engine
designs, yet in practice they have a reputation for being a bit thirsty. Any
thoughts on this?
You are quite right about lb/hp being
erroneous, but that is how some BSFC graphs are labelled. As we said, it should
be lb per hphour. We’d suggest that the part-throttle BSFC of
rotaries isn’t better than conventional piston engines.
I have enjoyed reading Autospeed for some time
know. The articles on a diverse range of vehicles make for enjoyable reading –
especially the history of an automotive dynasty such as BMW, Mercedes et al.
I recall reading some time ago your derogatory
review of the new FG Falcon series where you stated that - mainly due to weight
issues - it was a step backwards and not much to be excited about.
Winston Churchill once said words to the effect:
"Ive never suffered indigestion eating my own words". In light of the five star
ANCAP rating perhaps a second look at the FG is warranted? Autospeed should
acknowledge that - despite the incompetence of Ford management in the States -
the Falcon scores more highly on the safety front than the Audi A4 and A6 with
all their R & D might. Excuse the hyperbole but it is the automotive
equivalent of David vs Goliath.
An NRMA journalist who reviewed the FG said the
damping was a work of art and the steering world class. Other journalists have
said that the FG is comparable with any car in its class in terms of refinement
and performance. Please review the car again and by all means point out its
foibles but also its many merits.
Evidently I'm a Ford man...we have a 320000 km old
EB Fairmont Ghia (runs on LPG...). But don't pigeonhole me In recent times I've
had the pleasure of piloting a Mini Cooper S, a Subaru Outback 3.0L, Range Rover
Sport, a VE Commodore (which I liked warts and all) and a N14 Pulsar SSS which
various family have loaned me.
We have never reviewed the FG Falcon and nor
have we said “it was a step backwards and not much to be excited about”.
We have said that it is surprising that Ford
has released a car that appears so out of step with the times in regard to size,
fuel economy and greenhouse gas emissions; and have suggested in an ironic piece
that the new Falcon would be ideal in a time of low oil prices, high speed
limits, and where high performance could be used legally on Australian roads.
We also said that it was not the car that would
re-establish Falcon as a dominant force in Australian new car sales. We wondered
where the diesel, high tech LPG or downsized engine models were.
Since then, Ford’s chief has suggested a diesel
engine version will be released in a few years, and sales of the new car have
been up only marginally over sales of its predecessor – significant, when the
previous model was recording dreadful sales figures. We are pleased that the FG
has recorded excellent crash testing results – it is literally the only thing
that might save it in sales until new engine versions are introduced.
We have no doubt that the FG is a very good car
when viewed in isolation. (Considering how good the previous turbo models were,
we’d guess the new turbos are quite brilliant for their price.) Trouble is, when
Australia’s best-selling private purchase is the Toyota Corolla, the Falcon is
way out of step.
Also, expect government and many other fleet
sales of the Falcon to drop to near-zero when the Australian-built Camry hybrid
comes on line.
Altering Oxy Sensor Output
Re: your article Running Lean for Economy. You say
that intercepting the narrowband O2 sensor signal doesn't work. I don't
inderstand why that is the case. Surely you have seen this device:
It simply changes the voltage that the sensor reports to the ecu. The goal of
the ecu in closed loop is to adjust fuel delivery up or down to maintain an O2
sensor voltage of .45 volts which happens to equate to an AFR of 14.7:1. If the
EFIE adds .20 volts, increasing the voltage the ecu sees to .65v, won't the ecu
the reduce fuel flow to bring it back down to .45v and in the process lean the
AFR? What am I missing here? Thanks.
A narrow band oxygen sensor is not a linear
sensor, so it is not true to say the ECU is looking for 0.45 volts to show that
the air/fuel ratio is at 14.7:1. Instead, it is looking at a switch in oxygen
sensor output value that shows the air/fuel ratio has just passed through
By adding 0.2 volts to the sensor output, you
do not change the air/fuel ratio at which the sensor switches from high to low,
you just make both ‘high’ and ‘low’ higher.
If you add too much voltage, the ECU will
decide the sensor is never switching from high to low, and will register a
fault. If you add only a small amount, ‘high’ might become 1V and ‘low’ 0.4V,
but the air/fuel ratio at which the sensor changes from high to low doesn’t
As we said in the story, we’ve never seen
anyone modify narrow band oxy sensor output to achieve a measured change of
closed loop air/fuel ratios from a steady 14.7 to (say) an equally steady
15.5:1. If anyone has, we’d love to see how they did it.