Building a class B race car

Moderator: BradW

Re: Building a class B race car

Postby muller on Sun Feb 06, 2011 5:03 pm

Got a lot done, but not much to show in the way of photo's

Engine is now built, just waiting for my new clutch cylinder to arrive and I can finalise the clutch setup and fit the engine and Gearbox, that will be a big step forward as I can then start the wiring.

Wishbones came back from powder coating
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I've had a few question about the sphericals, they are retained with a circlip on the bottom
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Battery fitted
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Diff fitted (Forrester 4.44 LS)
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Cladding going back on including the scuttle. Once the switchgear layout is finalised the dash will go in.
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Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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Re: Building a class B race car

Postby rooster on Mon Feb 07, 2011 8:45 pm

I have seen a few of the guys who run cortina front hubs run spacers at the bottom and top of the hub,is that purely to change the roll centre or is it to change the angle of the arm at ride height,or both.Just curious
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Re: Building a class B race car

Postby muller on Wed Feb 09, 2011 12:07 pm

All of those reasons, but mainly to lower the ride height of the car without changing the wishbone angles or moving chassis mounting points
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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Re: Building a class B race car

Postby muller on Wed Feb 09, 2011 12:08 pm

Rear panel has been fabricated by Ricardo
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Fuel tank trial fitted
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Bonnet and nosecone trial fitted
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Tonight night the clutch cylinder will be fitted and hopefully we'll get the engine into the car
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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Re: Building a class B race car

Postby andredp on Wed Feb 09, 2011 2:36 pm

Nice! Thumbs up :D
Andre'
Racing: Locost Racer - Rocam with plastic intake manifold ;)
Upgrading: Luego Locost SA - ex 4AGE 20V - soon to be x2 on KWs
New projects: More Locost Formula racers
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Re: Building a class B race car

Postby BradW on Wed Feb 09, 2011 4:08 pm

Looking fantastic,
Really like the idea on the fuel tank, not wanting to put a spanner in the works but interested how you are going to deal with the regs ?

4.4.4.
The area above the petrol tank must be completely covered by means of an aluminium cover, secured at its perimeter, to prevent fuel spillage in the event of an accident. The use of any other material shall be subject to the approval of the Committee. Should fuel tanks be positioned within the passenger compartment, they will be isolated from the driver by means of a firewall or be enclosed within a separate metal container which will prevent fuel spillage onto the driver or into the driver’s compartment.


Brad
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Re: Building a class B race car

Postby andredp on Wed Feb 09, 2011 9:54 pm

I would say probably half of class B run those tanks now.They are coveredwith a seperate metal cover (firewall) to conform to the regs.
Andre'
Racing: Locost Racer - Rocam with plastic intake manifold ;)
Upgrading: Luego Locost SA - ex 4AGE 20V - soon to be x2 on KWs
New projects: More Locost Formula racers
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Re: Building a class B race car

Postby muller on Wed Feb 09, 2011 9:54 pm

BradW wrote:Looking fantastic,
Really like the idea on the fuel tank, not wanting to put a spanner in the works but interested how you are going to deal with the regs ?

4.4.4.
The area above the petrol tank must be completely covered by means of an aluminium cover, secured at its perimeter, to prevent fuel spillage in the event of an accident. The use of any other material shall be subject to the approval of the Committee. Should fuel tanks be positioned within the passenger compartment, they will be isolated from the driver by means of a firewall or be enclosed within a separate metal container which will prevent fuel spillage onto the driver or into the driver’s compartment.


Brad

I've been running a similar setup for almost a year now

The side passenger compartment cover fits over this to complete the firewall
Image
Last edited by muller on Wed Feb 09, 2011 9:59 pm, edited 2 times in total.
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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Re: Building a class B race car

Postby muller on Wed Feb 09, 2011 9:55 pm

The fun part starts now

Engine back in
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Rear suspension in
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Did not have the right bolts (1/2") for the shocks so could not fit that just yet
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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Re: Building a class B race car

Postby muller on Thu Feb 10, 2011 9:13 pm

Machined all the spacers needed tonight and finished off the rear suspension
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Started with the front suspension
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Should have a rolling chassis by tomorrow night
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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muller
 
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Location: Benoni

Re: Building a class B race car

Postby muller on Sat Feb 12, 2011 3:01 pm

We have a rolling chassis!!! Car going for its exhaust on Monday
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Haven't set ride height or anything yet
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We're using side vents with removable panels for easy access to the engine, also made by Ricardo
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Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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muller
 
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Joined: Sat Aug 28, 2004 4:57 pm
Location: Benoni

Re: Building a class B race car

Postby muller on Wed Feb 23, 2011 1:03 pm

Got the car back from exhaust and managed to get a lot of the management wiring done, wiring still needs to be tidied up but want to get the car running before I tape everything up.
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Oil cooler fitted, not the ideal spot but don't have time to be fancy. If we have temp issues I'll move it later.
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Dashboard 90% done, just need top fit the volt gauge and the data logger/display
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Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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muller
 
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Joined: Sat Aug 28, 2004 4:57 pm
Location: Benoni

Re: Building a class B race car

Postby muller on Sun Feb 27, 2011 7:21 pm

Its been a busy weekend, half of it spent trying to make the car run on more than 2 cylinders. Tried various thing till the point where I swapped out the management unit and got it going. Put old management back in and changed a few settings and she's running! Thank for all the help Andre!

Exhaust is on
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Wiring is 99% done, just needs tidying up
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Race seat and seatbelt mountings are done, just waiting for the prop to be fixed. Prop place made it 550mm long instead of the 505mm I specified URGH!!!, if it wasn't for this the car would be driving up an down the driveway tonight.

Dashboard is all wired up, incl data logger. Just need to calibrate all the setting but need the engine running a bit better for that
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Side vents colour coded
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Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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muller
 
Posts: 1452
Joined: Sat Aug 28, 2004 4:57 pm
Location: Benoni

Re: Building a class B race car

Postby andredp on Mon Feb 28, 2011 6:53 am

Looks nice, especially like the exhaust design. No problem with the help.
Andre'
Racing: Locost Racer - Rocam with plastic intake manifold ;)
Upgrading: Luego Locost SA - ex 4AGE 20V - soon to be x2 on KWs
New projects: More Locost Formula racers
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Re: Building a class B race car

Postby muller on Sun Mar 13, 2011 5:03 pm

Phakisa feedback

At the track car kept on blowing fuses until we traced it to a dodgy starter button that was shorting out internally!

In the 2nd session Lauren came back into the pits with the car covered in oil. Once I got back into the pits I refilled the oil and tried cranking for oil pressure - nothing. Lauren also told me the car sounded very rough and I suspected it ran bearings due to oil loss... that is until someone spotted this

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and we found this lying in the engine bay

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Still need to strip the motor but the bottom end is definitely throw away. I may be able to salvage the head. Japan Auto Trading will be getting a call from me Monday...
Anton

Race car 1: Birkin IRS 4AGE 20v (TLR class B - B10)
Race car 2: Birkin IRS 4AGE 20v (TLR Class B for SO - B20)
Road car: erm.. who cares
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muller
 
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Joined: Sat Aug 28, 2004 4:57 pm
Location: Benoni

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