fuel shut off for vintage motorcycles

[motocamp]

Was just wondering...

On a Vintage carbureted  motorcycle with gravity feed What kind of fuel shut off would i need?
Will the stock metal on/off fuel tap Suffice?   

[grumm441]

Are you running Fuel or  Gasoline?
G

[motocamp]

Gasoline ,but with N20 which will malke it a fuel class.

[grumm441]

You don't think that you will need a fuel pump with N20
Any way have a look at rule 7B2.5
If you are running fuel class you need to be able to shut it off without removing your hands from the bars
G

[motocamp]

I will have a fuel shut off switch for the N20 on the handle .

What I mean is would i need some kind of solenoid to shut off fuel from the main tank to the carb,or is the stock fuel tap acceptable for this?

[Nortonist 592]

It means you have to be able to shut off the fuel without taking you hands off the bars.  Many years ago I got caught out by that rule.  I'll assume your fuel tap is in the normal location under your tank.   My quick fix was to use an old handlebar choke lever and cable to the tap lever.  A small hole in the tap lever and it passed tech.  Wasn't rocket science but t worked.  I've seen solenoids in the line too.  But I'm not clever enough to be able to rig one up.

[grumm441]

Yep
What Nortonist 592  said
You need to be able to turn it off from the bars for fuel classes
It doesn't matter what's in the tank, it's what class you run
So, drill a hole in the handle on the tap and run a cable up to the bars.
you could use a choke control, a decomp lever or a throttle off an old lawn mower
As long as you can turn it off without your hands leaving the handle bars
So, if you have to reach down to turn it off it is not legal for fuel class
Running a solenoid can be problematic on an older bike as you may not make enough electricity to keep it turned on
Have a look at the solution this guy has used
http://www.landracing.com/forum/index.php/topic,8744.0.html
G

[motocamp]

Thanks Fellows.

I think i will go the simpler cable operated route...one less solenoid to wire into the system

[55chevr]

Pingel remote fuel shutoff valve ...

[motocamp]

Good stuff Pingel...but i did not find anything about remote fuel shut off valves in the online catalog

The handle bar tether kill switch looks good.

[55chevr]

http://www.pingelonline.com/guzzler_valve.htm

[motocamp]

Thanks 55chevr...missed that.

[grumm441]

Good stuff Pingel...but i did not find anything about remote fuel shut off valves in the online catalog

The handle bar tether kill switch looks good.

you have to run the handle bar tether kill switch anyway. 7B 2.2
G

[55chevr]

Pingel valves and kill switches work well and are decently made ... they certainly are not shy about their prices.


Joe