Sweat and sore mouse arms: Thor - the story ep2

[@Tom-ur7ew]

I would really like mini series on cad design and even CFD simulations for engines! Great content as usual!

[@gafrers]

I've been waiting for Ep.2. Wonderfully detailed, Cannot wait for Ep. 3 Would be interesting to see videos about CAD you mentioned

[@delamin8r]

That CAD series sounds really interesting, please do it!

[@heheeeeeeeeeeee]

And CAM !

[@nahuelkimmich647]

Please make Cad videos, I'm looking forward for those

[@heturbo]

The CAD Lessions would be amzing! So yes please!

[@madmike5144]

Awesome video, to see this, it was interesting to see how that engine was born, thanks for sharing...

[@TransilvaniaForester]

Yes the CAD video will be nice to see!

[@FirstLast-tx3yj]

Hell yh please do the series...

[@RobMcFlash]

Ive been waiting for this! Great Video, Thanks!

[@lauwelau27h]

Regarding the crankshaft, is it difficult to account for the secondary vibrations? Or is that not a problem for an inline 4? I know that Tony Foale has this method that applies to single cylinder engines using a balance shaft, but can you incorporate this into the counter weights?

[@ElmerRacing]

The second order imbalances can't be tuned with counterweights (they rotate at "1st order" speed). Reducing con rod and piston mass helps though. Second order imbalance compensation with balance shafts have 0 influence (or even negative influence) on the bearing loading situation. They only help with reducing the amount of vibrations transmitted to the chassis. Not a issue for a well balanced i4 engine. Especially for race applications.

[@lauwelau27h]

ElmerRacing that makes sense! Nice work, was just watching the 2019 WA at Sidney Motorsports Park, crazy lap times! That Porsche is 0.1s slower then Nico Hulkenberg in an A1 GP!:o 👏🏻👏🏻👏🏻

[@gxexrxmxaxnx]

Hey! How are you doing with the er8?

[@ElmerRacing]

Project is progressing! But since it's not a customer order, so doesn't have top priority. At the moment looks like first run later this year though :)

[@Hukkinen]

10:31 OMG, so you used not only CAD but also FEM/simulations, to design the enginen (and crancshaft). How many hundred engineers and physicist you have working in-house? ='D

[@aidansharples7751]

THEY HAVE TWO SLAVIC NUCLEAR ENGINEERS IN THE BASEMENT!

[@ElmerRacing]

Yes, it's important to make things that are actually good/better than existing stuff, and also light weight. We never make parts that are just "billet". No hundreds of engineers and physicists, just a few really good ones!

[@aidansharples7751]

@@ElmerRacing A FEW REALLY GOOD SLAVIC ENGINEERS! CONFIRMED.

[@satanaz]

@@aidansharples7751 finish people are not slavic

[@Artec12]

Amazing info as always, thanks! The CAD series would be amazing and super interesting. At some point you are talking about a friction model in FEA for simulating the load spread from the clamping forces of the studs around the cylinder. Are you refering to a friction model of the cylinder block to cylinder head surface friction?

[@ElmerRacing]

Reffering to using a friction model between the cylinder head and block. Non-friction could be used as a simplification, but not really as accurate. (error should be relatively small though. but not too much extra work to use a friction model, as long as you have some reasonable guesses and model knowledge)

[@Artec12]

@@ElmerRacing Makes total sense. This video series is so good I keep notes.

[@FirstLast-tx3yj]

@@ElmerRacing 1) if there were no rules, wouldnt a billet manesium block with iron sleeves be a lighter option? 2) on a v4 motorcycle engine can i do custom piston guided rods and shave off crank weight???

[@ElmerRacing]

@@FirstLast-tx3yj 1) probably yes. It's all a question in where on the price/mass curve you want to be though. 2) yes, if you design the crankshaft to take advantage of this.

[@FirstLast-tx3yj]

@@ElmerRacing 1) is magnesium that much more expensive? Because it is a v4 motorcycle engine and basically trying to replicate the block and transmission case using manesium 2)the case is an Oem engine so i meant custom piston/rods and machining the stock crankshaft to remove the weight.

[@TedPartrick]

I can't wait to see Thor in a car! Are you going to take the shine off of the aluminum? Can you leave it bright? I'm curious about the final surface finish.

[@ElmerRacing]

Surface won't last forever like that. But it's relatively robust for racing use. It can be left shiny :) For highly corrosive environments, anodizing would be recommended though. If you don't mind the spoiler, you can check out how it looks in the RP968! Working on putting it in our er8 also.