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Learning how to build Lotus Seven replicas...together!
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PostPosted: July 4, 2017, 11:36 am 
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Chapman went for low weight instead of high HP, and that was the theory behind the original Seven.
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It's much more than just the engine weights that have to be compared

All true and 'tis been ever thus. That's why Formula Fords are so fun and relatively affordable.

But can you imagine the Can-Am Series being run with 4-bangers? Some people just want a V8 :D

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PostPosted: July 4, 2017, 2:30 pm 
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seattletom wrote:
But can you imagine the Can-Am Series being run with 4-bangers? Some people just want a V8 :D


Well if they were Offenhausers...

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PostPosted: July 5, 2017, 8:08 am 
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But can you imagine the Can-Am Series being run with 4-bangers? Some people just want a V8
Formula 1 had screaming, howling Cosworth and Ferrari (and other) V8s for years, then went to screaming, howling V10's. Then most recently, they converted to hybrid drives with turbo 1.6L V6 engines. The cars are faster, more nimble, etc, etc... But the fans miss that noise. It's an integral part of the racing...

On a similar note (pun intended) how do you think turbo 4 bangers, no matter how fast they went, would be accepted in NASCAR??? Can you imagine the fans' outrage? Might as well piss on the Pope...

Yeah, sometimes it's good to have a V8.
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PostPosted: July 5, 2017, 11:33 am 
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I saw an interesting interview with Doug Fehan, Program Manager for Corvette Racing, at Le Mans last month. He said he spent time walking through the Corvette Coral, talking to fans from many countries. He made an interesting comment about their V8 engines and fans. I can't quote him, but a decent paraphrase of what he said is, "For many of our new fans, especially countries where they don't have or hear V8s day to day, they tell us the sound of our Corvette V8 engines is the first thing that attracted them to our race cars."

So, it looks like some sort of primal response to the sound of V8s exists in places outside of North America. Interesting, huh?


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Damn! That front slip angle is way too large and the Ackerman is just a muddle.

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PostPosted: July 23, 2017, 10:45 pm 
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To help quantify the sum of the differences between a 4 cylinder & slapping in a big old honking LS engine I just was reading an article about the new Hemp bodied "Renew" and they offer a 225 hp version that weighs 2,500 lbs.

Their LS crate engine version weighs in @ 2,800 lbs.

That should include the heavier duty bits required for the V8, but it still doesn't begin to tell the tales in consumables like the higher price of tires, shorter life of brakes, and let's not forget gas, although to me the gas is irrelevant since unless you are going cross country we aren't looking for the highest MPG.

Then there's all that extra heat that has to go somewhere which usually means in the cockpit and rising from the pipes across your arms and then into the cockpit too.

Just more food for thought

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PostPosted: September 21, 2017, 9:39 am 
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carguy123 wrote:
That should include the heavier duty bits required for the V8, but it still doesn't begin to tell the tales in consumables like the higher price of tires, shorter life of brakes, and let's not forget gas, although to me the gas is irrelevant since unless you are going cross country we aren't looking for the highest MPG.


To be fair, F body LS powered cars can easily get into the 30 mpg range on the highway, same with vettes. A lot of it has to do with aerodynamics. Lotus 7's just aren't aerodynamic. Hell even the Donkervoorts aren't. But they are at least slightly better at it.

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PostPosted: September 22, 2017, 3:13 pm 
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CodySimonson wrote:
To be fair, F body LS powered cars can easily get into the 30 mpg range on the highway, same with vettes. A lot of it has to do with aerodynamics. Lotus 7's just aren't aerodynamic. Hell even the Donkervoorts aren't. But they are at least slightly better at it.


Per Fuelly, typical V8 Camaros are netting 15-19 combined mpg. Ecoboost Mustangs are getting 23-25.


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PostPosted: November 8, 2017, 10:16 pm 
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Maybe this will help some of you out looking to use an Ecoboost engine.


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PostPosted: November 8, 2017, 10:30 pm 
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CodySimonson wrote:
To be fair, F body LS powered cars can easily get into the 30 mpg range on the highway, same with vettes. A lot of it has to do with aerodynamics. Lotus 7's just aren't aerodynamic. Hell even the Donkervoorts aren't. But they are at least slightly better at it.


But when you drive the car as it's designed to be driven instead of hypermiling the gas mileage drops into the single digits which requires larger tanks and more weight to carry & on the track it means bringing more gas cans, paying for said gas, and then there is the added expense of the larger tires & more brakes needed (as well as the weight) plus the shorter life of said tires & brakes. Larger radiator, more trouble cooling, etc., etc. It's a geometrical progression not an additive situation.

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