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Author Topic: Flying the Bf 109 B1: engine cooling question.  (Read 1668 times)

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Saltjunkie

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Flying the Bf 109 B1: engine cooling question.
« on: March 26, 2018, 11:02:33 AM »

I'm currently getting to know the Bf 109 B1. I've noticed that any throttling beyond 60 percent can cause overheating rapidly, and the use of the radiator has only marginal effects. I've also noticed that when I fly level at 150 mph/60 percent throttle, the engine temp sits around 80 degrees Celsius, but if I have the autopilot take over, in which throttle and altitude stay the same, etc., the engine temp goes down dramatically to around 40 degrees Celsius. What gives? There's no water injection, and the B1 has a fixed pitched propeller, and as I've said, with an open radiator the effects are minimal. Any advice would be greatly appreciated.

Thank you.
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western0221

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #1 on: March 26, 2018, 03:34:51 PM »

I've not looked into Bf 109 B1 flightmodel in BAT version (nor single published version) though ....

Your report sounds like its FM is not made for 4.12.2m games.
Old mod planes having 4.09 or 4.10 time FM (engine temperature) parameters usually show such too quickly overheating.
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Saltjunkie

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #2 on: March 26, 2018, 06:30:07 PM »

Thanks for your help. Would you happen to know which flight models for the Bf 109 are current?
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David Prosser

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #3 on: March 27, 2018, 06:46:17 PM »

If you're using the Engine Overheat feature; my advice is don't. It's bugged.

DavidHayabusa

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #4 on: March 28, 2018, 04:51:24 AM »

Is it bugged for all planes of just a few?
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Saltjunkie

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #5 on: March 28, 2018, 07:50:55 AM »

If you're using the Engine Overheat feature; my advice is don't. It's bugged.

When you say, "Engine Overheat feature," are you talking about one of the options in the realism setting, or a mod you activate? Thanks.
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David Prosser

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #6 on: March 28, 2018, 06:41:47 PM »

Yes, that's the one. The bug affects all planes to varying degrees. But it really hates 109s, and 190s from memory.

EHood

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #7 on: March 28, 2018, 07:46:36 PM »

If you're using the Engine Overheat feature; my advice is don't. It's bugged.

When you say, "Engine Overheat feature," are you talking about one of the options in the realism setting, or a mod you activate? Thanks.

The problem is apparently somehow connected with the "Engine Overheat" option in the Difficulty Settings. I first noticed the problem years ago, soon after installing one of the major upgrade patches for the stock Il-2 (4.09? .10? .11?). It happens with other engine types as well, including radial engines, not just Daimler-Benz inlines. Naturally, it's also occurred in my CUP and BAT installations. The only way I've been able to deal with this is to switch off the Engine Overheat option. This may detract from realistic engine operations, but no more than having the temperature gauges redline within moments of taking off, and for no obvious reason.
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A ya tsi-tsalagi.

David Prosser

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #8 on: March 29, 2018, 01:57:06 PM »

Yes, it seems to be embedded in the game. I think it'd be very hard to remove. Luckily, it can be ignored by not checking ENGINE OVERHEAT.

Saltjunkie

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #9 on: March 30, 2018, 11:12:46 AM »

Thanks for all the help. Have a great weekend.
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David Prosser

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #10 on: March 30, 2018, 07:22:47 PM »

You're welcome. I wondered what was wrong too when I struck it circa 2010.

Chrival

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Re: Flying the Bf 109 B1: engine cooling question.
« Reply #11 on: March 31, 2018, 02:24:51 PM »

The only way I've been able to deal with this is to switch off the Engine Overheat option. This may detract from realistic engine operations, but no more than having the temperature gauges redline within moments of taking off, and for no obvious reason.

I agree with you except one thing. This does not detract realism at all. On the contrary.
The way engine overheat is implemented in IL-2 is just totally unrealistic.
It's just a strange feature to increase difficulty for arcade players only.
If you like realism, disable it in option menu.
May be someday a modder will do a good, realistic and reliable mod to simulate credible engine operations and limitations.
Meanwhile, you'd better forget it.
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