Simon's Clubman Site

The 2nd Coming

Having once said that my second build would not be a repeat of the first, it's funny how things change !!

For my second ICV (Individually Constructed Vehicle) I was always thinking of something mid-engined, a la a FWD power plant in the rear. Along the lines of the Sylva MoJo2 http://www.stingraymotorsport.com/sylva.htm. At one stage I did quite a bit of research and planning but got stalled on the Engineering requirements (read costs) in Australia and lack of general information for a novice.

You know what it's like - as time goes by you never have enough and want more. The same applies to the Clubbie, particularly in the power department. Whist the MX5 (Miata to the American folk) is a great engine with a superb gearbox, it is still only a 1.6L 86kW motor. Any new car had to up the ante to make it worth the effort and avoid disappointment.

Fast forward a couple of years. In discussion with others who had previously built a clubbie (ICV, Locost or Seven), plans were laid for #2.

Having sat in just about every Clubbie around, together with a mate, we determined what we think is the ideal chassis dimensions. Also having access the an Elfin, Birkin, Westfield, Kestrel and a number of Locosts, we also have plans to mod the chassis design and simplify construction.

The choice of motor was a harder decision, with limited options in Australia due to tough emission compliance rules. The final selection came down to:

  • Toyota 4AGE 20v Blacktop 1.6 (123kW)
  • Toyota 3SGE Gen3 2.0 (132kW)
  • Toyota 2ZZGE 1.8 (140kW)
  • Ford/Mazda Duratec 2.0 (122kW)
  • Honda S2000 F20C 2.0 (176kW)

My line of thinking was if I'm building a new car, I want to use a current bread engine, with all aluminium design. This effectively eliminated the 4AGE & 3SGE. Whilst the Honda is considered the ultimate, availability and cost would usually put it out of most peoples reach. Realistically I was tossing up between the 2ZZGE and Duratec 2.0. The current model MX5 comes with the 2.0 Duratec and 6 sp R/W gearbox, so there would be no gearbox / adaptor plate / clutch matching issues or expense. It also comes with VVT which the Focus version doesn't.

All this went out the window when a local Honda S2000 write off was advertised and purchased for a price I couldn't refuse. It all happened quickly, and the rest, as they say, is history. The Honda F20C 2L motor develops 250hp / 176kW / 208nM in standard form. Put this into a 650kg Clubman, and we should have a rocket ship. The only down side is the height of the F20C motor, which will be addressed in the chassis design.

So the key components will be Honda F20C 2 litre, moly 5.5kg flywheel, H/D clutch & 6sp gearbox, Nissan GTiR IRS LSD diff and rear uprights, Gemini (Isuzu) front uprights.

The chassis will be losely modeled on the Gibbs chassis, +50mm in width.

May the good times in the shed roll on again.

S2000 lump on the table to design one peice centre tubes around

More tunnel prep

 

Bottom tubes scetched out on build table

Laying out the lower tubes again

 

Complete bottom tubes

Lower tubes ready to weld

 

Side "K" assembly in jig and fitted to chassis

"K" jig with tubes ready to weld

Rear K sections welded on

top rails coming along

 

Designing Tunnel

Working out the tunnel

Tunnel constuction

Complete chassis with front suspension and steering

 

Basic chassis complete

Gibbs  50 chassis next to standard locost

 

Diff housing

box with added bracing

 

String computer to test suspension setup

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Cutting wishbones to fit jig

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Completed front wishbones

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Jig it fit front suspension brackets

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Shortened Escort quick rack next to a standard rack

Shorted Escort rack

 

Front wishbones and steering setup, less the push rod suspension

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Pedal box mounted, Honda Civic steering column stripped with S2000 steering lock grafted

Pedal box & steering setup

 

Remodelled engine bay using round tube

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The next 4 chassis' in flat pack - Ikea style

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