The Birkin

The Birkin
The finished article

Wednesday, November 29, 2006

Choosing the Manufacturer

The first thing to do is to decide which Clubman to build. There are a huge number of options out there, from Westfield to Caterham to Fraser to Birkin to Elfin…..the list goes on. Given that I have no experience what-so-ever in the mechanical department, I decided to limit my choice to the local companies, leaving Westfield and Birkin.

The first thing to do, obviously, is visit each company. First trip was to Frank at Motowest, the local Birkin distributor. Frank runs an LPG and cruise control installation business, but you wouldn’t know it given the shop floor is covered with in-progress kit cars, plus the odd rare racing bike or two. It’s a well set-up workshop with all the tools and equipment you could need to build a car, plus he’s happy with people having their projects on his floor (or all over his floor when an oil-line gives way…..)

My impressions of the Birkin were good – it’s an extremely close replica of the Lotus 7 / Caterham, with similar lines and dimensions. The fixtures and fittings to my inexpert eye all looked to be extremely good - the car just worked as a unit, and looked less like a kit car that's been cobbled togther and more like a production car quality. All the parts fitted into an overall whole.

What I also liked was that Frank stood and chatted for ages on the car, the options, the abilities, the other options, how the other cars were coming together, how his car was coming apart for improvements then going back together etc. I certainly didn’t get the feeling that I was being sold anything, or that there was any sort of pressure. Which is nice when you don’t have a clue.

The next trip was to Westfield. Westfield is a name I knew in England, and it would be interesting to see what it was like over in Aus.

The Westfield’s in WA are imported chassis from the UK, modified for local standards and the dreaded ADRs. The showroom there is also littered with in-progress Westies, plus a few Cobras (one of the other lines of the Replica Motor Car Company).

Again, quite an impressive setup, plus I got to take the demonstrator out for a spin. I hadn’t driven a clubman for a while, so it was fantastic to take one out again. I must admit to being a little surprised at how squirrelly it was in the back end – nothing scary, I just knew that there was some back-end activity available when required ;-)

This was a great deal of fun, until I discovered that the throttle would stick in the fully open position if you floored it. I found this out when I lifted off the throttle as the bus in front of me slowed to a stop – and the Westfield kept on launching itself at the back of the bus. Luckily, I managed to turn the engine off complete and use the ample brakes to not wedge myself under the rear end, and roll it backwards into a car-park, much to the amusement of a few onlookers.

Not that it coloured my opinion – these things can happen, and it’s not like it was a serious fault, but it did dampen the amount of fun I could have…..Other points I liked about the Westie was that it was wider, giving more room for driver and passenger and making it a little more practical.

Overall, however, I decided on he Birkin – it was closer to my Caterham, and in my opinion looked more like what I was after. As I have said (and will no doubt say many times), I’m no engineer, so I cannot comment on various qualities around chassis design and suspension setup. I just bought with my eyes and heart and went for it.

5 comments:

Anonymous said...

Hi JDoc,

I'm reading your blog with great interest as I'm going through the same process of deciding which chassis to purchase etc. I'm also looking at the Birkin (prefer it to the Westy) but am also considering the PRB. Did the PRB factor into your considerations at all and if so, may I ask what your thought on it's merits versus the Birkin were?

Best of luck with the build.

Cheers,

Marc.

JDoc said...

Hi Marc,

PRB was certainly a consideration, however there's a bit of history here - PRB were the original importers of Birkins, so you'll see a lot of "PRB Birkin S3" references floating around the place.

The two are actually quite different - PRB has one model now, the PRB Composite. It uses different materials, and the engineering has diverged somewhat from the Birkin. Birkin is remaining closer to the original Lotus 7 design, but is still quite modern.

The composite is also wider by 4 inches, so watch whether the proportions and lines have changed. Also, PRB doesn't have a live axle any more, as they're exclusively IRS, which adds to the cost.

The two were extremely close - like you, I prefer the design of the Birkin and PRB (and Caterham, for that matter) to the Westfield. Ultimately, the final deciding factor was that there's a Birkin distributor in Perth who knows what he's doing ;-) Just that fact alone (and this is backed by other advice I'd received) meant that Birkin went ahead of PRB, in that I can get local support and advice.

It's a tough call as always.....have you checked out www.OzClubbies.com? Lots of really useful stuff in there as well, plus more Birkin / PRB info as well.....

Anonymous said...

Hi there,

First of all, I'd like to comment on the previous respondant if I may.. and again I too am torm between PRB and Birkin (with occassional thoughts to Frasers and Leitch's) so I'd be interested in what you establish and decide Marc.

And Jdoc.

One issue I am struggling with is making comparative cost. I have semi concluded that it is iompossible to accurately guestimate the relative costs of each kit. Even comparing what is in a kit does not appear clear cut, as some options or inclusions that appear similar, may actually contain elements of various levels of completeness.

I am particularly interested in which options you may have chosen. Also, if you did not choose the wiring loom, how difficult would you anticipate this aspect to do yourself?

Thanks

Dave.

JDoc said...

Hi Dave,

To be honest, the choices I've made reflect my inadeqacy as an engineer more than anything else. I've pretty much followed the party line when it comes to the various parts. The great thing with Birkin is you can source the entire thing from the dealer - I have one point of contact who can find me all the things I need. I need an engine, he found one. I need an instrument pack, he knows where to get them from. Now, with some things you can definitely source yourself if you like, but the one you mentioned - the wiring loom - is probably the one thing I would NEVER do myself unless you know a lot about electronics. It's not (as I understand it) a simple matter of plugging some wires in, especially with today's breed of engine. Linking all of the engine management sensors, dials, lights etc into the central computer etc is not a job for the inexperienced. Given the amount of time and grief I anticipate in saving by buying the loom from the supplier is far less than the cost to me. You may be an auto electrician in which case, go for it!

Looking at a recent Ozclubbies discussion (go there if you haven't already), it seems that the baseline for a clubman kit (as opposed to a Locost) seems to be $35 - $40K for something reasonable. As you say, if you buy the cheap kit, you usually find that there's a huge amount missing. From what I've read, yes the more expensive kits end up more expensive over all, but not by as much as you think.

I'm not a good clubman builder, by all accounts, as I've spent quite a bit, but I also decided to get all the upgrades done in the first instance, rather than litter my garage with old gearboxes that didn't make the grade.....

Perhaps I should create a blog post listing all the things I chose and why.....hmmmm

Anonymous said...

jdoc

Thanks for your response. Interesting and helpful reading.

I for one would also be interested in reading your purchases as suggested, though whether that is agood use of your time (given the fact Im sure youd rather be constructing) is questionable.

Anyway, thanks again for your viewpoints, and I look forward to your next instalments

Dave.

PS. No, Im not an auto electrician.. or indeed anything else useful in the context of a kit car build.