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Learning how to build Lotus Seven replicas...together!
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 Post subject: Re: DM weights and 7s and clones.
PostPosted: Sat Jun 20, 2009 10:29 am 
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Location: Under the weather. (Seattle)
horizenjob wrote:
When did this become part of the discussion?
If you're going to use airplane engines as what you believe to be a "valid" argument against the latest automotive engine technology as "marketing", then you are by nature talking about those technologies...Its actually a far more direct comparison than was bringing airplane engines up in the first place.

horizenjob wrote:
I hear the Nascar engines are around 30k or more.
...And that cost is little more than the cost of a new standard production 4cyl 360ci 180hp lycoming, which ultimately is the very reason that a comparison between cars and airplanes is pointless. They are two totally and completely different uses, that have totally and completely different operating requirements.

horizenjob wrote:
My point is that this fancy tech on the VW motor is producing a car so expensive - you could own a simpler street car and a modest track car and they would both be better at their job then the VW. Probably by a healthy margin. I think that's where the marketing comes in. The job of that car is not to get you from place to place or even tow a race car. It's to impress other people.
It's really not that expensive. In fact it costs less than the samt trim level TDI Diesel equipped Golf...It appears by this argument that we should all be driving Chevy Aveo's, or whatever the absolute cheapest, ugliest, most poorly equipped, POS we can buy is, lest we have all fallen into the "marketing" trap. :roll:

horizenjob wrote:
OK, so you edited your post.
Yeah, I'm a ninja like that. :mrgreen:

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 Post subject: Re: DM weights and 7s and clones.
PostPosted: Sat Jun 20, 2009 11:03 am 
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Nascar ???? This is a Solo 2 D-mod topic.. :wink: :D

Have you price a Cosworth BDG or Duratec 2.0, SBD Duratec or Judd K2000 ?... All of these are potential competitive engine for the D-mod Classe, all of these are more than 30K$ Don't ask yourself why the motorcycle engines were banned :cry:

Fred


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 Post subject: Re: DM weights and 7s and clones.
PostPosted: Sat Jun 20, 2009 5:57 pm 
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Location: Under the weather. (Seattle)
Yeah, any professionally built motor for racing is crazy expensive...But then again a much more modestly built Spec Focus 2.0L Duratec can make 170+whp with stock compression ratio and pump gas. I would think that for a few grand a reasonably competent mechanic could build a decently DM competitive 185-200 whp 2.0L Duratec simply by adding forged rods, high comp pistons, adjustable cam gears and/or more agressive (race) cams, and raising the rev limiter, relative to the current Spec Focus package. Sure you'd be short a few ponies and wouldn't have some trick bits like a dry sump, but I would think it could be a competent budget build at a fraction of the cost of the top dawgz. And also take note that at even at the top national level of Solo II extra power only does so much for you once you're traction limited, as evidenced by certain well sorted DM cars that have a nasty habbit of simply adding the necessary ballast weight (but no power) and running with the top national competitors in EM at the same event.

...Of course they could just let BEC's back in too.

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 Post subject: Re: DM weights and 7s and clones.
PostPosted: Sat Jun 20, 2009 9:40 pm 
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Location: Sunny-Okanagan, Canada, eh?!
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Yeah, I'm a ninja like that. :mrgreen:


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 Post subject: Re: DM weights and 7s and clones.
PostPosted: Thu Sep 16, 2010 6:40 pm 
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Well as I've brouth the Locost back in the garage we hade some thinking time with the Smallboys :cheers:

Turbo motor is not being considered anymore for our ultimate D-mod Se7en, but Honda K20 for the simple reason that the multiplier is obsolete and there some sentiment to ban turbos, no point in even waisting thinking time... The K20 is the best bang for the Buck..

T1420 lbs required for minimal weight with driver for a 2.0L engine is easely achievable the real work involves its distribution. Getting 60% of the weight on the rear axle is not gonna happen unless the motor is setback. Especially if one plays with the wheelbase as the rules allow. We're still thinking a Se7en chassis with less than 85 inch wheelbase.

Cheers,

Fred


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