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My Workbench
( ..actually the stationary
desk in my bedroom ).
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Workbench
2
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Oil Cooler
Motorcycle oil cooler ( with bypass
) mounted between oil tank and pump. After experimenting with various
sizes of oil pipe, decided that the oil cooler needed a bypass as it was
too restrictive on the oil flow and tended to make the pump 'cavitate' at
high revs. May replace bypass with another oil cooler so that they are
working in parallel. Fan
unit made from cheap 12V computer fans epoxied together. They have just
enough power to waft air through the cooler but seems pretty effective at
dissipating heat. Whether this will work well enough in practice I have
yet to test!
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Oil Pump
Power steering pump
from a Subaru and 12V motor from a car cooling fan. Will need to incorporate
an oil filter at some point. Holes drilled in motor casing to aid cooling
and will run for 10-15 mins before it starts to overheat. Motor powerful
enough to see 150psi when oil is cold but drops dramatically to 40psi when
oil gets hot. Pump speed/oil pressure will eventually be controlled by
altering the voltage to the motor.
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Oil Pump 2.
Shows toothed drive belt from
lawnmower driven by toothed gear on motor cast in epoxy resin using part
of another toothed belt as a mould. Motor to pump ratio is about 8:1.
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Oil Gauge
Glycerin filled gauge to help protect from hot oil. Mounting point on
brass compression T-piece ( just visible on right ) just before entry into
turbo. |
Trashed
Turbo..
.. and
expansion vessel from Volvo cooling system used for the oil tank.Yep, the
oil tank is made from plastic but it is of a hard type designed to
withstand the temperatures and pressures in a car cooling system. I've
tested it with hot cooking oil and it holds up quite well. Can hold about
1/4 of a gallon ( 1 litre ) and has a handy refill cap and vent pipe.
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Trashed
Turbo 2
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Blower
Reason for butchered turbo.
Turbo turned out to be a dud ( seals too leaky, bearings too sloppy and
turbine scroll too tight ) so decided to experiment with making a blower
using a 12V high speed ( 20000+ rpm ), high torque motor. Will attempt to
utilise this when I come to testing the combustion chamber.
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Blower 2
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Fuel System
12V cooling fan motor and fuel pump from an oil fired boiler pumping diesel.
Connection is a universal ball and socket joint from a model boat.
Pressure gauge attaches directly to body of pump via braided hose. Pump
rated at 260psi, tested to 400+psi. Will need bigger motor to achieve
higher pressures/flows. As with the oil pump the speed/fuel pressure will
eventually be controlled by altering the voltage to the motor, at the
moment it is controlled by adjusting the pressure regulator.
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Fuel
System 2
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Fuel
System 3
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Flame Tube
(To Be!)
Stainless steel can
from a vacuum flask (0.5mm thick, 86 mm diameter, 220mm in length). Closed
end will allow me to easily mount the nozzle and support the flame tube
within the combustion chamber in one go. It's sizing was based on the
original turbo, but hopefully can be utilised when I obtain a bigger
turbo.
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Nozzle and Glowplug
Nozzle is a
2gph 80 degree oil nozzle. Standard glowplug from a car diesel. The glowplug was surprisingly very effective at
igniting the diesel. I will obtain a long reach plug and attempt to mount
it at right angles through the CC which will be based on a fire
extinguisher.
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Fuel Pump
Test Setting up to make some flames...! |
Glow Plug On
Glowplug connected to 12V battery. After about 10 seconds the glowplug is
nice and hot... |
Flames
Turning on the pump at 50psi.... Ignition after a few seconds.You can just
see the L shape Allen key sticking out from the top of the pump used to
adjust the pressure. |
Flames 2
..and at 200psi...Couldn't get too close for long 'cos of the intense
heat.. |
