So how good is Christmas. With not having to be back at work till the 10th of Feb, best start working out this fuel tank.
Oh background time.
I've taken the ol' tank, lines and mechanic pump out of my reno 12, and have a ~30L Aluminum tank ready to go in. Why so small? Well my 1298cc is not going to be making dumb amounts of power, back of the envelope says ~100hp needs about 30L of fuel every hour. that will be more then enough for track days, and any sprint / regularity / even endurance event I'd ever want to run given the mandatory pit stops.
So why?
Well it was just a bunch of unknowns and waning to tidy up the fuel lines, and just not having to worry about crap lines, dirty tanks etc etc. Inspecting the original tank I noticed most of the mounting tabs had actually broken off the chassis anyway, and, I could never fill it up at SMSP as it would piss out the fuel cap (where it's vented) when ever I turned left. So, right. lets just piss it off.
Rules.
Should it ever get a log book, it's gonna end up a 3D sports sedan. In Vic there is a pretty active Under 2L Sports Sedan group that is seemingly dominated by modern mini's. They share grids with the Pulsars so there is enough of them to run every now and then, looks like something to aim for.
Motorsports Aus let you make a tank, just needs to be at least 3mm aluminium or stainless, mounted away from the cabin / secured in a box, vented with roll over protection (which the original tank didn't have), they have limits on how much fuel you are allowed to have (80L max for a 1300cc) and it needs to be secured by a cradle / and or straps.
The Sports Sedan rules have one further stipulation, any part of the fuel system must be at least 500mm away from the rear, or else you need to protect it with honeycomb aluminium, or Nomex.
What to do.
Well I reckon something like this, positioned on top of the rear having it more toward the middle, anyway actually leaves me ~560mm away from the rear, and provides a sane mounting position for elec pump and filter to go behind and below before swinging back to the cabin.
Re the cradle, I’m tempted to weld it at the back and sides to the beam. This might be enough to not have to support it from the back, I’ll have a think about that… otherwise some triangles bringing it down to the floor, big washers either side and it should be bomb proof compared to the original..
In regards to a strap, probably just add some tabs to the sides and run it over the top in front of the filler neck. I’ve left room in the cradle to insert some padding also, didn’t like the idea of the steel rubbing on the aluminium.
Ok, now just to clean it up a bit and force together with the heat of a small portable sun.
Wish me luck.
Oh background time.
I've taken the ol' tank, lines and mechanic pump out of my reno 12, and have a ~30L Aluminum tank ready to go in. Why so small? Well my 1298cc is not going to be making dumb amounts of power, back of the envelope says ~100hp needs about 30L of fuel every hour. that will be more then enough for track days, and any sprint / regularity / even endurance event I'd ever want to run given the mandatory pit stops.
So why?
Well it was just a bunch of unknowns and waning to tidy up the fuel lines, and just not having to worry about crap lines, dirty tanks etc etc. Inspecting the original tank I noticed most of the mounting tabs had actually broken off the chassis anyway, and, I could never fill it up at SMSP as it would piss out the fuel cap (where it's vented) when ever I turned left. So, right. lets just piss it off.
Rules.
Should it ever get a log book, it's gonna end up a 3D sports sedan. In Vic there is a pretty active Under 2L Sports Sedan group that is seemingly dominated by modern mini's. They share grids with the Pulsars so there is enough of them to run every now and then, looks like something to aim for.
Motorsports Aus let you make a tank, just needs to be at least 3mm aluminium or stainless, mounted away from the cabin / secured in a box, vented with roll over protection (which the original tank didn't have), they have limits on how much fuel you are allowed to have (80L max for a 1300cc) and it needs to be secured by a cradle / and or straps.
The Sports Sedan rules have one further stipulation, any part of the fuel system must be at least 500mm away from the rear, or else you need to protect it with honeycomb aluminium, or Nomex.
What to do.
Well I reckon something like this, positioned on top of the rear having it more toward the middle, anyway actually leaves me ~560mm away from the rear, and provides a sane mounting position for elec pump and filter to go behind and below before swinging back to the cabin.
Re the cradle, I’m tempted to weld it at the back and sides to the beam. This might be enough to not have to support it from the back, I’ll have a think about that… otherwise some triangles bringing it down to the floor, big washers either side and it should be bomb proof compared to the original..
In regards to a strap, probably just add some tabs to the sides and run it over the top in front of the filler neck. I’ve left room in the cradle to insert some padding also, didn’t like the idea of the steel rubbing on the aluminium.
Ok, now just to clean it up a bit and force together with the heat of a small portable sun.
Wish me luck.
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