The throbbing of the engines...or not!

Vacillator · 03-30-07, 03:15 AM

I searched for this and see that it's been asked before but couldn't find a defintive answer, so...

Running either electric or diesel I have no engine noise inside my Type VIIB, all the way up to ahead flank. Now I know I'm not stood next to Johann in the engine room but surely I should get something? Going external gives me some noise close to the camera.

Going external also showed me an odd thing. Was running diesels at ahead flank (and getting 18kts) to test noise. I saw that only one screw was turning, starboard was stationary! I thought 'that can't be right' so I went to 20m and then re-surfaced. This time on ahead flank I got both screws turning! Anyone know what gives? Surely one screw (ooh err missus) wouldn't give me 18kts?

Minor problems anyway but curious.

Oh I should say it's GWX 1.03 but I don't think I've ever heard engine noise in the boat.

kurtz · 03-30-07, 03:44 AM

I'm runnuing GWX1.03 and I do get engine noise, throbbing diesels on the surface and on diving a pause followed by the reasuuring whine of the electric engines.

Silly question but you have got fx turned up?

cardician · 03-30-07, 04:20 AM

The one screw turning could be because you were charging the battery. By default the helmsman charges the battery whenever you surface, hence only one screw turns. Sometimes its annoying when you want to surface and pursue a target and need both screws.

Vacillator · 03-30-07, 04:49 AM

Good points gents!

1. Silly question but you have got fx turned up?

Not a silly question at all. I haven't cranked them up all the way but I think all sounds are at the same level, will check tonight and adjust to check what I can get. Reckon you may have nailed that one so thanks for that.

2. The one screw turning could be because you were charging the battery.

Yes it could be, didn't think of that (so thanks again). However, I was still making 18kts which I would've thought unlikely with just 1 screw turning?

cardician · 03-30-07, 04:52 AM

That I wouldn't know. Other than the naval academy missions, I've only had the pleasure of manning a IIA so far. With both screws, surfaced, I'm lucky to get 11knots in good weather. I think even with the whole crew paddling we might get up to 12 :p

But yeah, if you've been submerged at all, unless you specifically tell the helsman to run standard or whatever, he'll just run one screw and use the other to charge the battery.

Vacillator · 03-30-07, 07:11 AM

Quote:

Originally Posted by cardician

But yeah, if you've been submerged at all, unless you specifically tell the helsman to run standard or whatever, he'll just run one screw and use the other to charge the battery.

Hmmm, the plot thickens. I had ordered ahead flank, so should that over-ride charging the batteries? Either way I seemed to get flank speed with only one screw turning so perhaps I shouldn't complain

.

03-30-07, 03:15 AM	#1
Vacillator Frogman Join Date: Jan 2007 Location: UK Posts: 307 Downloads: 0 Uploads: 0	The throbbing of the engines...or not! I searched for this and see that it's been asked before but couldn't find a defintive answer, so... Running either electric or diesel I have no engine noise inside my Type VIIB, all the way up to ahead flank. Now I know I'm not stood next to Johann in the engine room but surely I should get something? Going external gives me some noise close to the camera. Going external also showed me an odd thing. Was running diesels at ahead flank (and getting 18kts) to test noise. I saw that only one screw was turning, starboard was stationary! I thought 'that can't be right' so I went to 20m and then re-surfaced. This time on ahead flank I got both screws turning! Anyone know what gives? Surely one screw (ooh err missus) wouldn't give me 18kts? Minor problems anyway but curious. Oh I should say it's GWX 1.03 but I don't think I've ever heard engine noise in the boat.

03-30-07, 03:44 AM	#2
kurtz Seasoned Skipper Join Date: Oct 2006 Location: Leighton Buzzard,England Posts: 660 Downloads: 39 Uploads: 0	I'm runnuing GWX1.03 and I do get engine noise, throbbing diesels on the surface and on diving a pause followed by the reasuuring whine of the electric engines. Silly question but you have got fx turned up? __________________ War without Fire is like sausages without mustard-Henry V. http://www.myvintagelife.co.uk/

03-30-07, 04:20 AM	#3
cardician Torpedoman Join Date: Mar 2007 Posts: 115 Downloads: 0 Uploads: 0	The one screw turning could be because you were charging the battery. By default the helmsman charges the battery whenever you surface, hence only one screw turns. Sometimes its annoying when you want to surface and pursue a target and need both screws.

03-30-07, 04:49 AM	#4
Vacillator Frogman Join Date: Jan 2007 Location: UK Posts: 307 Downloads: 0 Uploads: 0	Good points gents! 1. Silly question but you have got fx turned up? Not a silly question at all. I haven't cranked them up all the way but I think all sounds are at the same level, will check tonight and adjust to check what I can get. Reckon you may have nailed that one so thanks for that. 2. The one screw turning could be because you were charging the battery. Yes it could be, didn't think of that (so thanks again). However, I was still making 18kts which I would've thought unlikely with just 1 screw turning?

03-30-07, 04:52 AM	#5
cardician Torpedoman Join Date: Mar 2007 Posts: 115 Downloads: 0 Uploads: 0	That I wouldn't know. Other than the naval academy missions, I've only had the pleasure of manning a IIA so far. With both screws, surfaced, I'm lucky to get 11knots in good weather. I think even with the whole crew paddling we might get up to 12 :p But yeah, if you've been submerged at all, unless you specifically tell the helsman to run standard or whatever, he'll just run one screw and use the other to charge the battery.