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OHV Teaser

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zeussy

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Post Thu Nov 25, 2010 1:13 am

OHV Teaser

After a few nights of work modeling and animating here is a video of the latest engine parts we have got working - An Pushrod (or Overhead Valve) head setup, this simple, robust and cheap configuration will be the mainstay of your early game compact cars, but will struggle to compete with newer more technically advanced designs later on in the game.


This is the internal view of the engine running, you'll also be able to view the completed engine from the outside, and strip away various parts as it runs.


All still at a bit of a work in progress stage, and the garage backdrop is nowhere near complete.










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fordford

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Post Thu Nov 25, 2010 1:24 am

Re: OHV Teaser

love it
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Post Thu Nov 25, 2010 3:35 am

Re: OHV Teaser

Looks really nice.

But, could we have a todo list of things needed to release engine designer?
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Post Thu Nov 25, 2010 8:40 am

Re: OHV Teaser

Kubboz wrote:Looks really nice.

But, could we have a todo list of things needed to release engine designer?



That's a pretty long and complicated list, and we aren't sure of everything we need to do yet either!

It should be done by January, but honestly, some stuff has taken a lot longer than we thought and some stuff has been quicker, so its hard to predict so it might end up taking a little longer than than
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Post Thu Nov 25, 2010 9:10 am

Re: OHV Teaser

Looks brilliant!
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Post Fri Nov 26, 2010 9:19 pm

Re: OHV Teaser

If you use "an" before a word that doesn't start with a vowel again, I'm going to steal Daffy's computer and fix your darned grammar.

Also this video looks great guys - well done :)
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Post Sun May 08, 2011 10:43 pm

Re: OHV Teaser

Sorry about the dredge peps, just have a slight concern that I'd want to air.
"but will struggle to compete with newer more technically advanced designs later on in the game."
Thing is, while a OHV design for sure have several disadventages compared to an OHC engine, it also have a couple of really good advantages, such as a lot more compact packaging, less weight( and lower centre of gravity to booth) easier maintenance and less friction. The fact that for eample GM's LS-series is still very much competitive even among several more "advanced" designs should serve as proof of that.

A fully trimmed 7.0 litre LS7 OHV V8 (Corvette Z06) weights 458 pounds, a fully trimmed 5.0 litre S85 DOHC V10 (BMW M5 and M6. 10 awards from "International Engine of the Year") weighs 529 pounds. They produce about the same amount of peak power, but the former have a far more favorable tourque band, less weight, smaller dimensions, is more efficent and less costly. So which one is really the most technically advanced? ;)
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Post Sun May 08, 2011 10:51 pm

Re: OHV Teaser

The LS engines are a bit of a special case - but you should be able to build a similar engine in game by using very high quality valve gear etc. allowing higher revs and so on.

OHV engines can certinaly be made to make a lot of power, but the only real advantage of them is simplicity, compact size and weight - they can perform very well, but they don't have a performance advantage over OHC multivalve designs, and you'd need to spend a lot more R&D on the OHV motor to get as much out of it.
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Fenris

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Post Sun May 08, 2011 11:06 pm

Re: OHV Teaser

Thanks for the answer Daffyflyer. :) It's a relief to hear that you're focusing on making this as realistic as possible, adding lots of variables, instead of just going that one type of engine design, or suspension set-up is initially better than another one in any case. It all depends on what be the purpose they are designed for.
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Post Wed Sep 21, 2011 2:53 am

Re: OHV Teaser

uhh what about being able to choose between hydraulic lifters and solid lifters (pushrods) ?
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Post Wed Sep 21, 2011 6:08 am

Re: OHV Teaser

Fenris wrote:A fully trimmed 7.0 litre LS7 OHV V8 (Corvette Z06) weights 458 pounds, a fully trimmed 5.0 litre S85 DOHC V10 (BMW M5 and M6. 10 awards from "International Engine of the Year") weighs 529 pounds. They produce about the same amount of peak power, but the former have a far more favorable tourque band, less weight, smaller dimensions, is more efficent and less costly. So which one is really the most technically advanced? ;)


yeah and a 7.0 litre BMW v10 would blow it away

LS7 also has to be hand built and has a dry sump system much more work and expense than the bmw lump.

also the 6.0 v10 fitted to the new 7 series has 80lb-ft of torque more than the ls7 and is still 1000cc smaller
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conan

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Post Wed Sep 21, 2011 5:04 pm

Re: OHV Teaser

But don't forget that it was V12 and got 2 turboes.

And stop .... Corvette got OHV .... not DOHC .... not even Turbo .... So LS7 wasn't really high tech.

I still love to take one rather than boring BMW.
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Post Wed Sep 21, 2011 5:07 pm

Re: OHV Teaser

sparkyplug28 wrote:yeah and a 7.0 litre BMW v10 would blow it away
And it would be the same size and weight as a small house.
LS7 also has to be hand built and has a dry sump system much more work and expense than the bmw lump.
You can buy an LS7 from the dealer for about $14k US. I can't even find pricing for a complete S85 crate engine on the entire internet, which most likely means if you went to the BMW dealer the parts counter guy would laugh in your face. I work parts for a Mercedes Benz dealer and MSRP for some AMG engines is over $50k US.
also the 6.0 v10 fitted to the new 7 series has 80lb-ft of torque more than the ls7 and is still 1000cc smaller
Considering it's twin turbocharged that's not impressive in the slightest.
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Ice

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Post Wed Sep 21, 2011 6:08 pm

Re: OHV Teaser

The 7 series BMW currently doesnt ship with a V10 twin turbo. It ships with a 6.0 V12 twin turbo taht produces something like 400kw :)

If your arguing over which is more high tech id honestly say the BMW S85 by a clear margin. How americans get so little power out of such a big engine is commendable really :p
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Post Wed Sep 21, 2011 7:29 pm

Re: OHV Teaser

Image

THIS is the only good reason for OHV :P
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