Strom Motorsports B48/B58 Alternator Overrun Pully

[i3igpete]

I started to go down this Rabbit Hole myself, but I couldn't remember for inelastic collisions (which a gear change/clutch pack grab is) if you're supposed to find the difference of squares i x (omega2^2-omega1^2) or Square the difference i x (omega2-omega1)^2.

You could probably just claude it though. Anything at sonnet tier or higher should trivially be able to do the math

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[omfgzilla]

I started to go down this Rabbit Hole myself, but I couldn't remember for inelastic collisions (which a gear change/clutch pack grab is) if you're supposed to find the difference of squares i x (omega2^2-omega1^2) or Square the difference i x (omega2-omega1)^2.

You could probably just claude it though. Anything at sonnet tier or higher should trivially be able to do the math

Oh christ........... that's more math than I really care to do atm with inelastic collisions lol. Was using the formula in the video but I'll just leave it at .......... "it's less punchy". Looking forward to seeing your data

 

[i3igpete]

From what I remember, the effective inertia of an traditional (non-MGU) alternator is somewhere in the ballpark of ~10% of the rest of the engine system (including crank, recip assembly, and flywheel/flexplate, excluding everything else downstream of the clutch). So I would expect the upshift time to reduce by something like 10-20% quicker, tops, assuming the same clamp load.

Obviously, the tensioner is going to be happier regardless of the actual amount, since we're not momentarily turning the slack side into the taut side. The strom video shows the tensioner slap pretty well.

 

[i3igpete]

Looking at the data with MHD logs, results are inconclusive. I don't have enough resolution to really zoom in to the slope mid-shift - it's always 2 datapoints from peak to trough.

 

[DC5UPRA]

Looking at the data with MHD logs, results are inconclusive. I don't have enough resolution to really zoom in to the slope mid-shift - it's always 2 datapoints from peak to trough.

Yea but what's the butt dyno read?

 

[RyanA90]

https://strommotorsports.com/products/b48-b58-alternator-overrun-pulley

Installed the Strom Overrun Pulley today but havent test drove it yet, will report back how it feels on the butt dyno!

Before:

After:

This made removing the alternator pulley 10x easier:

 

[Hasan]

Does it make any difference on the MTs?

 

[Strat-Supra]

I installed it on my manual, it doesn't rev hang as much, which has helped with smoother shifts. Unfortunately, haven't driven the car much since installed so it might all be in my head.

 

[Vegas17]

I'm an idiot and didn't use a 6 point 10mm on the alternator shaft first go....stripped....got a 6 point....stripped. Don't be me.

 

[RyanA90]

I'm an idiot and didn't use a 6 point 10mm on the alternator shaft first go....stripped....got a 6 point....stripped. Don't be me.

I didn't either but I didn't strip it.

 

[Hasan]

I installed it on my manual, it doesn't rev hang as much, which has helped with smoother shifts. Unfortunately, haven't driven the car much since installed so it might all be in my head.

That's good enough for me

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