Humpty Dumpty Fuel Cell

[Robert Linton]

As there has been interest in the components within Humpty Dumpty, the following description of the approximately 7 kg fuel cell might be of interest.

77-Liter Fuel Cell Including:

a. Carbon Fiber/Kevlar® Enclosure

b. Carbon Fiber/Kevlar® Access Plate

c. Viton® Access Plate Gasket

d. Composite Nut Rings

e. FIA-FT 3.5 Lightweight Bladder With Fuel Baffles, Trap Door And Foam

f. Carbon Fiber/Kevlar® Catch Tank

g. Dual Fuel Lift Pump System [quad system might be installed for certain racing application]

h. Composite Lift Pumps Mounts

i. FIA Three Stage Rollover Valve With Custom Modified Goodridge Machined Aluminum Banjo Fitting For Clearance

j. In-Line 150 Micron Filter

k. Porsche® Fuel Sender Interfacing With Trip Computer

l. Overflow Prevention System

m. Viton® Covered Wiring Harness

n. Titanium Fasteners

o. Carbon Fiber Fuel Cell Mounting Strap And Carbon Fiber/Titanium Clamping System For Front Damper Reservoirs

p. Fuel Filler Neck With Custom Modified Goodridge Machined Aluminum AN Fitting For Goodridge G-Line XF Hose

q. High Pressure Fuel Pump/Primary Fuel Filter Package With Aluminum AN Fittings And Carbon Fiber Mounting [for racing, secondary fuel pump might be installed]

r. Secondary Fuel Filter With Aluminum AN Fittings And Carbon Fiber Mounting

s. Goodridge G-Line XF PTFE Fuel Hoses With Goodridge Machined Aluminum AN Fittings

t. System Connecting Metal Fuel Lines To Goodridge G-Line XF Fuel Hoses Via Machined Aluminum AN Fittings

u. Parker Hannifin –6 Aluminum Quick Disconnects With Chassis Lanyards Between Fuel Lines And Engine

v. All Electrical Connections Through Hermetically Sealed Quick Disconnect Plug

w. Relay Between High Pressure Pump And Fuel Lift Pumps

x. Single Pole, Miniaturized, Thermal Circuit Breakers With Tease-Free, Trip-Free, Snap Action Mechanisms And Push/Pull On/Off Manual Actuations, Temperature Compensated From -55°C To +125°C, For High Pressure Fuel Pump And For Each Fuel Lift Pump

[warmfuzzies]

Robert,

If it hasn't been asked before....why Humpty Dumpty?

Humpty Dumpty in history was an old English Canon.......so how come the name?

If it's been said before, a link will be enough humiliation...............

thanks

Kevin.

[Christer]

one word. awesome.

[Robert Linton]

Humpty Dumpty because it was apart and put back together again.

[warmfuzzies]

Aha, I see now.

I won't bore you with the rest of the rhyme then.

thanks
Kevin

[Christer]

where does the wall come into it?

[warmfuzzies]

Well it [humpty dumpty] fell off of it...


kevin.

[Robert Linton]

Too complicated. Nothing to do with a wall.

[warmfuzzies]

Robert,

Just something that's been bothering me, Carbon fibre as we all see in F1 and GP races tends to disintegrate, or fracture into small shards, it's behaviour is dependant upon the angle of impact as such, does this not make it a poor choice for a fuel cell as compared to plastics which exhibit better deformation without splitting/collapsing....Or is it an impact resistance being greater for carbon fibre issue that swayed you in this direction?

kevin

[Robert Linton]

Kevin:

That is a problem with carbon fiber. That is why, to quote the above:

a. Carbon Fiber/Kevlar® Enclosure

b. Carbon Fiber/Kevlar® Access Plate

Though the Kevlar® adds a bit of weight, it provides the shatter protection.

Bob

[warmfuzzies]

Thanks Bob, makes sense now.

Kevin

[Arjan B.]

May be it's bin told, but what are the costs of this project.............??

[Robert Linton]

With the mold made, the engineering done, other such fuel cells could be sold for approximately $11,000 - $12,000 each -- which, by the way, is on a par with a factory cell for an ALMS/ELMS race car which cells weighs almost twice as much and uses a FT3 bladder. If the FT3.5 bladder in this cell was replaced by an FT3 unit (the requirement in ALMS, ELMS, GrandAm), the cost would be reduced by more than $1000 each. On the other hand, if you added the dry-break system used in ALMS, ELMS and GrandAm, the cost would be increased by approximately $1000. And, yes, for club racing, you can buy cells for many thousand less and, for that purpose, they might, depending upon your needs and wants, be reasonably acceptable.

[Arjan B.]

Thanks, but I ment the costs of the Humpty Dumpty project it self....................