RD Engine Advancement?

[Mike McCreery]

I understand how the R&D factories are used to advance plane model types earlier than the historical release date.

What I am unclear about is if there is a method to do this for the engines and/or what happens to engine production dates when an R&D aircraft model advances?

Does the engine date advance with the plane model date or is it different?

[RangerJoe]

I understand how the R&D factories are used to advance plane model types earlier than the historical release date.

What I am unclear about is if there is a method to do this for the engines and/or what happens to engine production dates when an R&D aircraft model advances?
Nothing special. But if there are 501+ engines in the stockpiles for that model being researched then each factory that produces at least 1 research point will produce 1 more research point but one engine for that model is used.

Does the engine date advance with the plane model date or is it different?
The engines have their own dates.

The aircraft factory won't produce an aircraft without an engine, it will not produce the airframe which waits for an engine to complete the aircraft. You can and should produce a stockpile for each engine not just for the research bonus.

[Chris21wen]

I understand how the R&D factories are used to advance plane model types earlier than the historical release date.

What I am unclear about is if there is a method to do this for the engines and/or what happens to engine production dates when an R&D aircraft model advances?

Does the engine date advance with the plane model date or is it different?

What RangerJoe said plus you research engines in exactly the same way as you do aircraft the only differences being there is no die roll involved in engine research and given enough supply engine factories alway repair one per day. You still however need a fully repaired factory (30 optimal) before the R&D points are generated.

It is easy to miss but if you advance the air fame you should also advance the engine it uses, preferable to a date well before it is needed by an air frame otherwise that aircraft will not be built unitl it is. I always set every single engine aircraft factory to 30 as soon as supply allows, lets say ont he 8 Dec. By the 8 Jan it will start producing R&D and there is no chance of the above happening.

[Mike McCreery]

I have never played the Japanese before so my inexperience may be the problem. Here is what I am looking at.

hamamatsu.png (275.1 KiB) Viewed 808 times

Ok, if we look at Hamamatsu - There are 30 engines in R&D production with 0 to repair.


If we look at the engine database there are 0 engines produced in the R&D except for 12 Rufe's.

engine.png (197.76 KiB) Viewed 807 times

Soooooo.... I am wondering if it is too early for the pools to start building or if I am again doing something functionally wrong.

[RangerJoe]

I have never played the Japanese before so my inexperience may be the problem. Here is what I am looking at.

hamamatsu.png


Ok, if we look at Hamamatsu - There are 30 engines in R&D production with 0 to repair.


If we look at the engine database there are 0 engines produced in the R&D except for 12 Rufe's.

engine.png

Soooooo.... I am wondering if it is too early for the pools to start building or if I am again doing something functionally wrong.

It is not too soon to start building pools.

But if you look at the engine factory for the Ha-45 engine at Hamamatsu, you may notice that while it is completely repaired it will not produce anything but research points for the engine. Once you get to 100 research points, then the due date is one month sooner. The factories at are fully repaired but at level 10 will average 10 research points in a 30 day month. If you ensure that there is at least 10k+ in supplies at that base, you can expand it to size 30. It should take 100 supplies* for the initial expansion request for each factory point and then 1000 points for each repair but repairs will only occur when there is at least 10k+ in supplies at the base.

*If I remember correctly.

[Mike McCreery]

Ok, so I cant see the research points but they are accumulating?

The 500 engine limit was confusing me because obviously the R&D engine factories are not actually building engines. Will increase production next turn.

[RangerJoe]

Ok, so I cant see the research points but they are accumulating?
Maybe you can in Tracker but I don't use it.

The 500 engine limit was confusing me because obviously the R&D engine factories are not actually building engines. Will increase production next turn.
The 501+ stockpile is for the research bonus for researching aircraft.

It is best to only build your research factories to size 30 until they are ready to produce. For aircraft, if you switch the factory to the next one in the research line then there is no penalty.

[PaxMondo]

Ok, so I cant see the research points but they are accumulating?
...

If you hover your cursor over the factory, you can see the RnD points.

Only FULLY repaired, size 30 minimum factories will produce 1 (ONE) RnD point each day. So, at this time you have only 1 RnD factory generating RnD point for the Ha-45, and it take 100 points to advance 1 month.

This is why we generally talk about size 30 RnD factories, and we tend to do them in groups of 3 because 3 size 30 RnD factories will generate 100 points in 33 days (just over a month) and advance the arrival date by ANOTHER month in addition to the calendar month just concluded.

So, for example, you have 12 x 30 RnD factories on Ha-45 fully repaired. At that point, every 8 days you will advance 1 month. So if the current date is 1 Jun 42 with 0 RnD pts and the arrival date is June43, then 9Jun, the arrival date will become May 43, on 17 Jun the arrival date becomes April 43, on 25 Jun it will be Mar 43. etc etc etc

Once the RnD in completed and the factories start to build, the 12*30 factories are building 12 engines each day. So, in 42 days you have your 500 engine pool and it will start to impact your Aircraft RnD ....

Hopefully, this helps ...

[Chris21wen]

Here's my state on 13 Feb 43 against the AI. Bare in mind I have some self-imposed research restrictions going on in that all stuff currently under research at the start has to be reseached before the research can be changed.

Screenshot 2025-05-30 071326.jpg (42.19 KiB) Viewed 750 times

At game start I set all R&D factories to 30 except for one Frank factory that already has 55 so it was increased to 60, supply allowed. By the middle of Jan 42 all research factories (30) were fully repaired and producing 1 R&D point per day. There are only 5 R&D factories left, the four visible and one unseen, still under research. They have all advanced by 4 months over the past year.

Initially there was only one Ha-45 (30) being researched. Due to my self imposed restrictions I later swapped an Aichi Ha-60 in Jun 42 and the Kawasaki Ha-60 in Nov 42 when they completed research. But even with these restriction I stll got the Ha-45 in Jan 43 after advancing by eight months.

Imagine how early yours will arrive if you increase all of your Ha-45 factories to 30. You have 6 and assuming they all repair by end Jan 42 they will start to generate 6 R&D points every day meaning for every one month game time the engine will advance appox 2 months and you'll get the Ha-45 in Aug 42 a whole 13 months early.

When in productions, even if you don't increase fatory output, you will be producing 120 engines per month, 500 by the end of the year and 1500+ by the Sept 43, it's original due date.

My observations from what I can see in your pic is you are researching too many Ha-45, others will disagree, strongly I expect, but I'd only do 3 or 4 but styles of play differ greatly. Once researched you can alway increase factory output and you should, enough to cover your monthly air frame output. The fewer factories you have the larger their size needs to be.

I think most will agree that your Ha-5 engine production is not needed. There's usually 100+ in the pool at game start and the only air frame using it that is worth producing is the Topsy 1 and that is quickly replaced by the Topsy 2 which uses the Ha-31. But again it playing style.

Hope this is helpful.