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Post by ajw on Jul 20, 2014 10:59:16 GMT
An underrated vehicle for air cooling is the 900 series Metrobus Omnidekkas - upstairs is quite cool especially at the rear or if you sit in front of the staircase on the right hand side. Because the air is not flowing through the bus properly. It needs some windows open to even it out!
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Post by Nathan on Jul 20, 2014 13:49:51 GMT
The back upstairs on those buses is the best spot in the summer Nice air con, and a cool breeze. After riding a 134 VW last Saturday, I absolutely agree. An underrated vehicle for air cooling is the 900 series Metrobus Omnidekkas - upstairs is quite cool especially at the rear or if you sit in front of the staircase on the right hand side. The Omnidekkas have air con? I didn't even know this. The Omnicities have air con too, but you can barely feel anything from it
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Post by ajw on Jul 20, 2014 14:08:45 GMT
After riding a 134 VW last Saturday, I absolutely agree. An underrated vehicle for air cooling is the 900 series Metrobus Omnidekkas - upstairs is quite cool especially at the rear or if you sit in front of the staircase on the right hand side. The Omnidekkas have air con? I didn't even know this. The Omnicities have air con too, but you can barely feel anything from it None have air con, some do have a cooling system installed called forced air ventilation. As I keep carping on about there is a BIG difference between air conditioning and forced air ventilation, even though both are cooling systems. If you look at this picture of a 900 series Onidekka which is the type vjaska was talking about you will see the tell tale air intake vents above the 2nd window. I hope the picture was taken on a cold day as no windows are open which makes it next to useless unless you are sitting right below the blower fan outlets. upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Metrobus_948_YN07_EXG.JPG/800px-Metrobus_948_YN07_EXG.JPGWhen the 27 was Omnidekka operated they too had the ventilation system, no doubt other examples in London too. By contrast on the eariler versions the intake vents are not present. www.flickr.com/photos/londonstreetscenes/3703125091/lightbox/
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Post by rmz19 on Jul 20, 2014 19:25:56 GMT
I like how the Gemini 3 B5LH and B9TL have their Air Con systems hidden from view, same for the Volvo MCV B9TL, looks much neater and saves space rather than having them visible above the staircase. The upcoming ADL E400 still has the system above the staircase, some of the pics are shown in a link posted in one of the threads under this thread topic, here is the pic.
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Deleted
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Post by Deleted on Jul 21, 2014 0:11:24 GMT
I like how the Gemini 3 B5LH and B9TL have their Air Con systems hidden from view, same for the Volvo MCV B9TL, looks much neater and saves space rather than having them visible above the staircase. The upcoming ADL E400 still has the system above the staircase, some of the pics are shown in a link posted in one of the threads under this thread topic, here is the pic. Woah, I don't usually criticise ADL but that is ugly.
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Post by ajw on Jul 21, 2014 0:49:05 GMT
I like how the Gemini 3 B5LH and B9TL have their Air Con You do of course mean air cooling system don't you? It isn't air-conditioning. To be air-conditioning it needs to condition the air. Condition in this context means to 'modify'. You can modify air by altering the temperature and or the humidity in the air. The unit you showed the picture of does neither. All it does is suck in air from outside and blow it inside. The air may well feel cool, but that is because the air is moving past your skin and as such feels cool. Lick you hand and blow on it and you will see the area you licked 'feels' cooler than where you didn't. Same effect. That is why you hear comments on this board that sitting under or next to the unit feels much 'colder' than elsewhere in the bus. As also previously mentioned the other way this cooling system works is by expelling hot and stale air from within the cabin, assuming sufficient high level windows are open to allow the hot air to be exhausted. So simple it isn't air condition it is air cooling, specifically forced air-ventilation. This double decker on the other hand does have air conditioning, but appears to have lost a row of seats to accommodate the air-conditioning pack. Note the vented access door towards the back on both sides? upload.wikimedia.org/wikipedia/commons/a/ac/CTB260.jpgi511.photobucket.com/albums/s354/mybigshow/news_100117-2.jpg
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Post by twobellstogo on Jul 21, 2014 8:08:20 GMT
I rode 13017 on the 53 and it was pleasantly cool - in stark contrast to LT129 on the 148 which was still hot and had that stupid loud motor that always gives me a headache. Not all the 53's Geminis are cool : most (but not all) I've travelled on are not
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Post by rmz19 on Jul 21, 2014 17:30:02 GMT
I like how the Gemini 3 B5LH and B9TL have their Air Con You do of course mean air cooling system don't you? It isn't air-conditioning. To be air-conditioning it needs to condition the air. Condition in this context means to 'modify'. You can modify air by altering the temperature and or the humidity in the air. The unit you showed the picture of does neither. All it does is suck in air from outside and blow it inside. The air may well feel cool, but that is because the air is moving past your skin and as such feels cool. Lick you hand and blow on it and you will see the area you licked 'feels' cooler than where you didn't. Same effect. That is why you hear comments on this board that sitting under or next to the unit feels much 'colder' than elsewhere in the bus. As also previously mentioned the other way this cooling system works is by expelling hot and stale air from within the cabin, assuming sufficient high level windows are open to allow the hot air to be exhausted. So simple it isn't air condition it is air cooling, specifically forced air-ventilation. This double decker on the other hand does have air conditioning, but appears to have lost a row of seats to accommodate the air-conditioning pack. Note the vented access door towards the back on both sides? upload.wikimedia.org/wikipedia/commons/a/ac/CTB260.jpgi511.photobucket.com/albums/s354/mybigshow/news_100117-2.jpgOh right, I thought they were Air Con systems because of how great they actually work and that they're hidden from view, thanks for the explanation!. Regarding the unit in the pics, it is infact in the new ADL E400.
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Post by rmz19 on Jul 21, 2014 18:50:31 GMT
I rode 13017 on the 53 and it was pleasantly cool - in stark contrast to LT129 on the 148 which was still hot and had that stupid loud motor that always gives me a headache. Not all the 53's Geminis are cool : most (but not all) I've travelled on are not I think it's because the system was turned off, I've encountered this twice when I got on a 53 in anticipation that I'll enjoy a cool journey, but the system was turned off, I decided to get off and wait for the next one as I had time on my hands, that was turned off as well!, so I thought I'd just bare with it....lol.
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Post by Deleted on Jul 21, 2014 19:29:40 GMT
A little off topic from LT's but was surprised just how cool the upper deck was on a older WVL I was on today. I am used to rather stuffy Tridents
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Post by jay38a on Jul 22, 2014 8:27:00 GMT
A little off topic from LT's but was surprised just how cool the upper deck was on a older WVL I was on today. I am used to rather stuffy Tridents Went on a new VW on the 7 yesterday and that was stuffy as the air conditioning now only trickles out.
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Deleted
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Post by Deleted on Jul 22, 2014 23:36:11 GMT
The Gemini 2's I use (Metroline VW and Transdev VH) always seem to have very effective air cooling units. I'm guessing the Gemini 3 and LT's use different units.
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Post by ajw on Jul 23, 2014 0:17:17 GMT
The Gemini 2's I use (Metroline VW and Transdev VH) always seem to have very effective air cooling units. I'm guessing the Gemini 3 and LT's use different units. Yes it is different as the LT's appear to have refrigerative air conditioning not forced air ventilation. By rights it should be better, but clearly something is wrong with the size of the unit and/or the overall design of the system.
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linus
Driver
If it ain't broke, fix it till it is.
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Post by linus on Jul 27, 2014 10:39:11 GMT
Pleasantly surprised yesterday by a couple of LTs on the 390, both spewing out cool air and quite tolerable.
But then I ventured onto a packed LT33 on the 24 at TCR and remembered how seriouly BAD these are. This was like a cauldron, a swirling mass of hot humid gases. And to my horror, there actually was cool air coming out of the vents, but with the top deck full it simply wasn't having any effect; the rate of heat emanating out of 30 or so bodies far exceeded any cooling effect, and boy were those bodies sweltering! And swearing, and furiously fanning.
I am therefore led to believe that the system is irretrievably broken and these buses should not be allowed on the road in temperatures exceeding about 22 degrees.
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Post by twobellstogo on Jul 27, 2014 12:25:27 GMT
I am therefore led to believe that the system is irretrievably broken and these buses should not be allowed on the road in temperatures exceeding about 22 degrees. Well, in that case, we should say the same about the 13001-13032 batch of Stagecoach Volvo/Gemini 3 hybrids, all but two of which I found unacceptably hot. Let's also close all the deep level tube lines while we're at it, because they too get uncomfortably hot. Not allowing them on the road is a serious overreaction to the issue.
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