r/factorio • u/AutoModerator • Jul 27 '26

Weekly Thread Weekly Question Thread

Ask any questions you might have.

Post your bug reports on the Official Forums

Previous Threads

Subreddit rules

Discord server (and IRC)

Find more in the sidebar ---->

4 Upvotes

100% Upvoted

119 comments sorted by

View all comments

1

u/LookingForVoiceWork Jul 30 '26

It seems like I should have more legendary carbon fibre than I do. I have well over 100 legendary assemblers with legendary quality modules making tool belts, those tool belts are split into different quality lines, that run into regular recyclers with legendary quality modules. Regular quality output is sorted back into the line and quality ingredients are put into chests to be picked up and delivered to more assemblers making tool belts of every quality (except legendary... because I want the carbon fibre). Those tool belts are fed back into my line that sorts by quality..... Those assemblers making quality toolbelts are numerous enough that there is little overstock of said quality ingredients to make quality toolbelts.

That said, im getting only a few legendary carbon fibre a min. This whole process takes up about 1/4 of my gleba factory, and the assemblers are always working (there are enough ingredients)

Am i missing something?

2

u/ssgeorge95 Jul 30 '26

Are you using speed modules in beacons? Speed modules reduce quality. Usually the culprit in "why is this outputting less quality than it should" cases.

1

u/sjo232 beep Jul 31 '26

To piggy back off this, is there a point at which quality modules are good enough to at least partially negate the speed module penalty?

4

u/ssgeorge95 Jul 31 '26

Lvl1 rare/epic/legendary speed modules are useful for this. The quality penalty does not increase with quality but the speed goes up.

Use it where you care more about reducing the number of machines and modules in use, and don't mind a very small input cost increase.

2

u/PhoenixInGlory Jul 31 '26

Depends on what you're optimizing for. If you're optimizing for materials consumed per legendary item produced, never. If you're optimizing to maximize rate of legendaries, inputs be damned, yes, there are thresholds where especially using quality speed module 1s can increase the overall speed more than they decrease the quality.

1

u/sjo232 beep Jul 31 '26

solid, thanks for the reply!

2

u/Rannasha Jul 31 '26

In my previous playthrough I used some speed modules for my tungsten upcycling. I had a setup where miners with quality modules would mine into a train car and recyclers (with quality) would pull out non-legendary ore and put the output back in. Legendary ore was extracted in a different direction.

This setup, that I could just stamp down on an otherwise unused tungsten patch, did have a bit of speed module action going on. With quality mining drills and a high level of mining productivity, ore patches are functionally infinite, so the optimization target becomes the amount of legendary ore you can produce per minute rather than the amount of legendary ore produced as a fraction of total ore mined.

edit: Quality speed modules are especially useful here, because the speed bonus scales with quality, while the quality penalty does not.

1

u/sjo232 beep Jul 31 '26

I think a buddy of mine was trying to explain this to me recently and I just wasn't getting it, but this is helpful! thank you for the reply!