5 Miles on Reserve?

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Run two taps with off-run-reserve. I bought them from CNW's many moons ago. Stop for gas at around 100 miles.
Pete
 
Dellis said:
I run with two taps without stand pipes and use the left side as reserve which gives me around 1.5 litres.

Dave
Click to expand...
I'll give this a try first since it requires no investment. I can just remove the plastic standpipe. I'll probably carry some gas in a small container and run the reserve out to see how many miles I can run on the "reserve".


Deets55 said:
Run two taps with off-run-reserve. I bought them from CNW's many moons ago. Stop for gas at around 100 miles.
Pete
Click to expand...
If the test with the standard taps doesn't yield sufficient reserve I'll invest in some new fuel taps and try this.
5 Miles on Reserve?


Thanks everyone, lots of good information here.
 
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Dan1950 said:
I'll give this a try first since it requires no investment. I can just remove the plastic standpipe. I'll probably carry some gas in a small container and run the reserve out to see how many miles I can run on the "reserve".



If the test with the standard taps doesn't yield sufficient reserve I'll invest in some new fuel taps and try this.
5 Miles on Reserve?


Thanks everyone, lots of good information here.
Click to expand...
If you go to this tap be aware that the one tap is not fully threaded for some unknown reason . As i experienced with mine , there was roughly 1 1/2 turns of thread engagement once you installed the sealing washer , nut and aligned properly . Not feeling good about that , i returned the tap and was sent one that they had run a die over allowing for full thread.
 
Ron Hulton said:
If you go to this tap be aware that the one tap is not fully threaded for some unknown reason . As i experienced with mine , there was roughly 1 1/2 turns of thread engagement once you installed the sealing washer , nut and aligned properly . Not feeling good about that , i returned the tap and was sent one that they had run a die over allowing for full thread.
Click to expand...
Both of my taps are fully threaded. The only real difference between the two is the little plastic tube under the screen of the "on" tap..
 
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I have a 77 MK3 Roadster.
With standard configuration the reserve is good for about 30..40 km (depends on the length of the standpipe).
With two petcocks without standpipe the reserve of one half of the tank is good for about 5 km.

I tried this out:
First I opened only the petcocck on the right side until the bike stopped, then I opened the other side too, it lasted
for another 5 km until the tank was completely empty.

Note:
if the road is bumpy and there is some acceleration (also up and downhill) the petrol will swap from one half of the tank to the other, the levels of the halves will be balanced.
 
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From a previous thread a while ago:

That experiment then:
Roadster tank fitted with two reserve taps, I run the right hand side tap normally with the left hand tap being my "reserve reserve"
I ran the bike on A and B roads with plenty of turns and stops to get some splosh over from left to right whilst it was running down on the right hand side.
First falter I switched the left tap on .
As I knew I had about three litres of fuel tucked away behind me I wasn't being frugal so I might have got slightly more mileage.
Result: A tad under 9 miles (8.8).
 
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Dommie Nator said:
From a previous thread a while ago:

That experiment then:
Roadster tank fitted with two reserve taps, I run the right hand side tap normally with the left hand tap being my "reserve reserve"
I ran the bike on A and B roads with plenty of turns and stops to get some splosh over from left to right whilst it was running down on the right hand side.
First falter I switched the left tap on .
As I knew I had about three litres of fuel tucked away behind me I wasn't being frugal so I might have got slightly more mileage.
Result: A tad under 9 miles (8.8).
Click to expand...
I have to say i was expecting more mileage than that!!
 
I see one drawback with these. They are not mirror images. Reserve on the tap on the right points towards the fuel outlet while the one on the left reserve points away from the fuel outlet.

5 Miles on Reserve?
 
Dan1950 said:
1.5 liters should give a reserve of about 20 miles with conservative riding
Click to expand...
I get around 45 mpg so 15 miles to bone dry… I think 10 miles would be ok on mine but any more and you’d be seriously pushing your luck and very shortly afterwards pushing your bike :)

Dave
 
Marcelx said:
Have you tried it?
Please consider the movement of the petrol in the tank during riding. This is not a static system.
Click to expand...
In the spring I will experiment. I am mostly concerned with fuel reserves while traveling and riding would be conservative.
 
Dellis said:
I get around 45 mpg so 15 miles to bone dry… I think 10 miles would be ok on mine but any more and you’d be seriously pushing your luck and very shortly afterwards pushing your bike :)

Dave
Click to expand...
Well I'm looking at the worst case scenario. Making it to the nearest gas station.
 
Dan1950 said:
I see one drawback with these. They are not mirror images. Reserve on the tap on the right points towards the fuel outlet while the one on the left reserve points away from the fuel outlet.

5 Miles on Reserve?
Click to expand...
Can't understand that being a problem...... Surely the only difference you need to know is between main (vertical) and reserve (horizontal)
Apologies if I'm missing something..
 
EstuaryBoy said:
Can't understand that being a problem...... Surely the only difference you need to know is between main (vertical) and reserve (horizontal)
Apologies if I'm missing something..
Click to expand...
"Reserve" and "off" are both horizontal and point in opposite direction between the 2 taps.
 
EstuaryBoy said:
Dan1950 said:
"Reserve" and "off" are both horizontal and point in opposite direction between the 2 taps.
Click to expand...

Can't understand that being a problem...... Surely the only difference you need to know is between main (vertical) and reserve (horizontal)
Apologies if I'm missing something..
Click to expand...
When I test ride customer bikes with them, I'm always annoyed. The markings are usually poor, and I need reading glasses to read them. I suppose if I had them on my own bikes, I would remember which is which.

They might make sense to me on a tank with a different tunnel; but, with a Norton tank two petcocks with no standpipe lets you use either side as main and the other as reserve, and if you're really hauling a.., both to keep the flow going.

Also, a couple of blocks before the end of every ride, I turn the petcock(s) off so the bowls are nearly empty when I put the bike away - I don't want to fiddle with figuring out petcocks while riding.
 
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