Fuel efficiency maths geek question

marcus

marcus

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OK just biting a little from an earlier thread.............

GCSE Maths for bikers....

If I have a 330 mile journey which is 90% plus motorway...what is the quickest way to complete the journey.........

Keep it at 95 (at least) as much as possible only slowing down for cameras thereby giving a fuel range of about 160 miles.......


Keep the rpm below 4500 as much as possible and keeping more or less to speed limits giving about 230 miles fuel range.....


Which method gets there first if a fuel stop takes on average 9 minutes.....

Discuss!


you see, being quick is not always about going fast

Await the usual "add 2 hours for BMW assist" gags
 
Without using a calculator, probably the slow speed works out quicker as the other "speed" will have to stop twice for fuel. If the journey was only 319 miles .....

The hard part would be the averaging 95mph of course, unless it's at 2 am.
 
John Armstrong said:
Without using a calculator, probably the slow speed works out quicker as the other "speed" will have to stop twice for fuel. If the journey was only 319 miles .....

The hard part would be the averaging 95mph of course, unless it's at 2 am.
Click to expand...

Drive at the fastest speed that will get you there on just one fuel stop.

Do not lane-split above 20 mph.

Do not exceed the speed limit.

Wear a Hi-viz suit.

As you're on a 1200, make sure that your RAC cover is up to date.

:mcgun

Greg
 
cutting between traffic that's moving, could also be called filtering or cutting people up, riding like a B45t4d and giving other GS'er a bad name.

As I for one am able to get a bad name without help.

hope that clears it up would ride a between 70-80 or limit your happy with on motorways have a break for a cuppa and fuel no point busting a gut or getting to goal with on reserve.

regards

loiq
 
GCSE answer,

assuming you can average 95 miles an hour over thre entire journey gives you a total travel time of 3h28m plus 18 minutes for your fuel stops; equals 3h46minutes.

If you average 70 miles an hour over the entire distance the travel time is 4h42 minutes, you only stop once for fuel, taking 9 minutes so your grand total is 4h51minutes.

The world, however is never so perfect. The only true answer is an empirical test, pick your route, do the 330 miles at 95m.p.h. or more, then return at 4500rpm or less and let us know ... :)
 
CityBum said:
GCSE answer,

assuming you can average 95 miles an hour over thre entire journey gives you a total travel time of 3h28m plus 18 minutes for your fuel stops; equals 3h46minutes.

If you average 70 miles an hour over the entire distance the travel time is 4h42 minutes, you only stop once for fuel, taking 9 minutes so your grand total is 4h51minutes.

The world, however is never so perfect. The only true answer is an empirical test, pick your route, do the 330 miles at 95m.p.h. or more, then return at 4500rpm or less and let us know ... :)
Click to expand...


Fuck the GCSE answer........all you've got to worry about it which is more fun :D
 
Or, go flat out, 135mph. Riding time = 2hrs 26min. Fuel range = 100miles at this speed, so 3 x 9min stops. Total time = 2hrs 53min
 
Here we go again - another thicko question - "V7CND" - what's that?

I googled it - only got three answers, which I understood even less.

Phil
 
marcus said:
OK just biting a little from an earlier thread.............

GCSE Maths for bikers....

If I have a 330 mile journey which is 90% plus motorway...what is the quickest way to complete the journey.........

Keep it at 95 (at least) as much as possible only slowing down for cameras thereby giving a fuel range of about 160 miles.......


Keep the rpm below 4500 as much as possible and keeping more or less to speed limits giving about 230 miles fuel range.....


Which method gets there first if a fuel stop takes on average 9 minutes.....

Discuss!


you see, being quick is not always about going fast

Await the usual "add 2 hours for BMW assist" gags
Click to expand...

Why get there quickly? - it's better to travel than to arrive.
 
Unless you've found a mythical empty motorway forget averaging 95. In the real world this will make ba difference to your journey time as you will be constantly having to slow down for other traffic - maybe save a few minutes but who cares, you'll be far more stressed out riding at that speed, the chances of getting squashed are higher, you'll use more fuel, piston ring and tyre (and brake pad) and if you get nicked you'll looses all time advantage and get a fine to boot.
Chill out man and do it at 75 ish
(I'm off to Norwich on Friday and thats what I'm gonna do)
 
Fanum said:
Haven't you heard of filtering?? :augie
Click to expand...

Filtering is not very popular in this camp... although if I wanted to sit behind cars all the way to my destination then I would go in a car. Before the "no filtering" posy jump in, I only filter when I feel it is safe to do so (after doing a risk assessment, filling it the forms in triplicate, getting them checked by the H&S guy and putting on all the necessary protective clothing).
 
Engineer said:
Why get there quickly? - it's better to travel than to arrive.
Click to expand...

well the actualité behind the question with some empirical evidence is.....

I travel at least twice a month from South London to South lakes at the weekend - 660 ish mile round trip. Sort of goes like this
A4M4M25M43M40M6A6A590

and then return.

Go up on early Sat am, return sun pm......no time to have fun going by the Cat & fiddle or anything like that.....just want to get there with minimum fuss & lets face it the M6 just not nice.

Empirical evidence......fastest journey on bike using the get there fast, use a bit of zig-zag filtering and undertaking :augie but no high speed filtering between side by side traffic:rolleyes: ) , obey all posted speed restrictions........under 4 hours:angel

Slowest journey on bike (daylight).......4,500 rpm max....stop for tea breaks....about 5 hrs 30 ish, maybe 6

At the end of method 1 I felt a bit like Spud in Trainspotting at the job interview....very hyper. Method 2......b-o-r-e-d but get to sleep easier and still have hearing.

Fastest journey in car.....about 5 hours, slowest about 8

Reason for question being it seems quite frequent that I need to waste time filling up when I'm very near the end of the journey........

Conclusion I reckon 1 fill up at Warwick should do the job if I obey all posed restrictions and stay below 80mph........:)
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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