|
Post by vjaska on Apr 28, 2014 18:10:50 GMT
The 6 speed ZF SPs at LU are primarily limited to 39mph. Some may be limited to 35mph. These buses have a manual kickdown that allows the bus to downshift, but they are still limited to around 1500rpm. The 5 speed ZF SPs (08/58 plate) are limited to 56mph but have no kickdown function at all. In both cases, pumping the throttle overrides the rev restriction. Most TAs at LU are limited to 56mph. A few of the 51 reg TAs can do 62mph, whilst Voithers 341-346 can do 60mph. TLA3 is limited to 39mph, but some other low numbered TLAs can do at least 56mph. Some of the SLEs have a fully functional kickdown, some don't. Some are limited to 45mph, others are limited to 50mph. As for Abellio, 9401 - 9427 have an acceleration rate restriction in place and are limited to 40mph. 9428 - 9466 are mixed - a decreasing number have the same accelration restriction. More of them have a blanket power restriction, so they are slow regardless of the gradient. Rogues 9403 and 9448 have escaped restriction - the former can do 56mph, whilst the latter is described as "our king" by some WL drivers. As for 9467 - 9523, they have severe impediments on acceleration. In terms of time taken to reach 30mph on the flat, now that the S reg DLAs are gone, they are possibly the slowest batch of buses in London, excepting those with mechanical faults. The majority are limited to 30mph. A few are limited to 40mph. A couple of rogues, 9482 and 9483 have a fully functional kickdown, but are still limited to 30mph. 9524+ were fully unlimited. There was no speed restriction at all, not even at 56mph. No kickdown however. Abellio's Vs are limited to 40mph, at least the 9001 - 9020 batch are. I don't think I ever got any of the newer ones anywhere near that speed. Some of Abellio's TAs can do 56mph. Several are limited to 40mph, whilst 9827 is limited to 50mph. Interesting regarding 9467-9523 - do you know how good 9500 is? I rode & filmed this one before it entered service in London and it was quick along the country lanes, could of sworn it was doing more than 30mph (for anyone reading, the roads it was on was was fine for speeds of up to 40mph).
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 28, 2014 20:04:39 GMT
John tuthill - This was along the Hampton Court Road just after the bridge. Nevertheless i have removed the original comment from the post to avoid anything being caused.
|
|
|
Post by John tuthill on Apr 28, 2014 20:22:52 GMT
John tuthill - This was along the Hampton Court Road just after the bridge. Nevertheless i have removed the original comment from the post to avoid anything being caused. You never know who's reading our comments ;)We've had people "doing 50 in a 30" on a bus(!)Always best to qualify the location. In case you drive that road regularly, the roundabout at Ember Court road, that's the first one south of Hampton Court, they're always there with a 'hairdryer'
|
|
|
Post by First Hayes on Apr 30, 2014 8:58:25 GMT
All Ex-First VN's restricted to 45mph
The SN's are speed limited to 56mph
|
|
|
Post by joefrombow on Apr 30, 2014 15:55:18 GMT
Any E400 from around 59/10 reg has no manual Kidckdown Same with E200's from late 60 reg No London B9TL has manual Kickdown Arriva's DW's from DW401 are speed limited to 42MPH Arriva's DW's in London from DW425 (No idea why) have no kickdown I was on a DLR Replacement last week, one of Sullivan's ZF b9tl's have working full kickdown shame the 25's don't .
|
|
|
Post by vjaska on Apr 30, 2014 17:32:16 GMT
Any E400 from around 59/10 reg has no manual Kidckdown Same with E200's from late 60 reg No London B9TL has manual Kickdown Arriva's DW's from DW401 are speed limited to 42MPH Arriva's DW's in London from DW425 (No idea why) have no kickdown I was on a DLR Replacement last week, one of Sullivan's ZF b9tl's have working full kickdown shame the 25's don't . The Sullivan Buses ones are also different in that they are Euro IV and have much better gear ratios.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 30, 2014 19:31:13 GMT
The 6 speed ZF SPs at LU are primarily limited to 39mph. Some may be limited to 35mph. These buses have a manual kickdown that allows the bus to downshift, but they are still limited to around 1500rpm. The 5 speed ZF SPs (08/58 plate) are limited to 56mph but have no kickdown function at all. In both cases, pumping the throttle overrides the rev restriction. Most TAs at LU are limited to 56mph. A few of the 51 reg TAs can do 62mph, whilst Voithers 341-346 can do 60mph. TLA3 is limited to 39mph, but some other low numbered TLAs can do at least 56mph. Some of the SLEs have a fully functional kickdown, some don't. Some are limited to 45mph, others are limited to 50mph. As for Abellio, 9401 - 9427 have an acceleration rate restriction in place and are limited to 40mph. 9428 - 9466 are mixed - a decreasing number have the same accelration restriction. More of them have a blanket power restriction, so they are slow regardless of the gradient. Rogues 9403 and 9448 have escaped restriction - the former can do 56mph, whilst the latter is described as "our king" by some WL drivers. As for 9467 - 9523, they have severe impediments on acceleration. In terms of time taken to reach 30mph on the flat, now that the S reg DLAs are gone, they are possibly the slowest batch of buses in London, excepting those with mechanical faults. The majority are limited to 30mph. A few are limited to 40mph. A couple of rogues, 9482 and 9483 have a fully functional kickdown, but are still limited to 30mph. 9524+ were fully unlimited. There was no speed restriction at all, not even at 56mph. No kickdown however. Abellio's Vs are limited to 40mph, at least the 9001 - 9020 batch are. I don't think I ever got any of the newer ones anywhere near that speed. Some of Abellio's TAs can do 56mph. Several are limited to 40mph, whilst 9827 is limited to 50mph. Are any of the single deckers at LU Limited? (DE,DLE,DPS,MCL,OT,SDE)
|
|
|
Post by VPL630 on Apr 30, 2014 20:48:46 GMT
Any E400 from around 59/10 reg has no manual Kidckdown Same with E200's from late 60 reg No London B9TL has manual Kickdown Arriva's DW's from DW401 are speed limited to 42MPH Arriva's DW's in London from DW425 (No idea why) have no kickdown I was on a DLR Replacement last week, one of Sullivan's ZF b9tl's have working full kickdown shame the 25's don't . They were not built to London spec
|
|
|
Post by M1104 on Apr 30, 2014 20:53:22 GMT
I was on a DLR Replacement last week, one of Sullivan's ZF b9tl's have working full kickdown shame the 25's don't . They were not built to London spec On top of that they can be activated upon request as it is simply a software modification.
|
|
|
Post by capitalomnibus on Feb 12, 2015 1:29:20 GMT
It's not legal that bus's speed capability have to be limited, but it does increase percentage of safety and economy. Buses can also be adjusted in terms of torque/horsepower, pullaway, gear changing, kickdown, etc. I assume that the majority of buses that are used mainly in Inner London are restricted. But obviously for bused that are used on dual carriageways or motor ways (e.g. Route 34) then it would be silly to restrict them. I don't think the 34 had get unrestricted buses because of the route. It was that time, Arriva never bothered with doing bus restricting then. At the time the DLA's were new for the 34 in 2003/4 Only First London and Quality Line and I think some Metroline buses had speed limiters set at various speeds i.e 28, 33, 38, 40 mph
|
|
|
Post by capitalomnibus on Feb 12, 2015 1:40:37 GMT
Any E400 from around 59/10 reg has no manual Kidckdown Same with E200's from late 60 reg No London B9TL has manual Kickdown Arriva's DW's from DW401 are speed limited to 42MPH Arriva's DW's in London from DW425 (No idea why) have no kickdown DW401 onwards is limited to 44mph, not 42. Early DB300 DW's like 201-300 has kickdown at around 80% pedal position. All DB300 DW's has a spring based kickdown switch installed that pushes from 90%-100% pedal position. However it is not functional. Later DW's i.e like 401 onwards does not have kickdown from 80% pedal position. It wold not overrev unless on a gradient, hard cornering which can fool the tilt switch used for gradient and other methods (which I would not disclose) can still allow them to reach the engines 2200rpm natural max rev limit. They can allow up to 2500rpm for a very short while, but would go back to 2200rpm. 400 series onwards would naturally then upshift between 1500-1700rpm at 90% or even if you tried at 100% pedal position. IIRC those from around DW500 has a better ECU mapping which is more responsive and would get 100% engine torque quicker with the pedal down, but still would not go past a natural rev limit of 1700rpm. (unless otherwise)
The E400's at 59 plate still do have manual kickdown switches, but are activate/deactivate at operators request. They are worst without as the engine is not mapped to accommodate without it as when it comes to hills. These early versions would then be sluggish as it would have then expect the driver to activate the kickdown switch to gain more power to climb.
|
|
|
Post by VPL630 on Feb 12, 2015 8:23:57 GMT
Any E400 from around 59/10 reg has no manual Kidckdown Same with E200's from late 60 reg No London B9TL has manual Kickdown Arriva's DW's from DW401 are speed limited to 42MPH Arriva's DW's in London from DW425 (No idea why) have no kickdown DW401 onwards is limited to 44mph, not 42. Early DB300 DW's like 201-300 has kickdown at around 80% pedal position. All DB300 DW's has a spring based kickdown switch installed that pushes from 90%-100% pedal position. However it is not functional. Later DW's i.e like 401 onwards does not have kickdown from 80% pedal position. It wold not overrev unless on a gradient, hard cornering which can fool the tilt switch used for gradient and other methods (which I would not disclose) can still allow them to reach the engines 2200rpm natural max rev limit. They can allow up to 2500rpm for a very short while, but would go back to 2200rpm. 400 series onwards would naturally then upshift between 1500-1700rpm at 90% or even if you tried at 100% pedal position. IIRC those from around DW500 has a better ECU mapping which is more responsive and would get 100% engine torque quicker with the pedal down, but still would not go past a natural rev limit of 1700rpm. (unless otherwise)
The E400's at 59 plate still do have manual kickdown switches, but are activate/deactivate at operators request. They are worst without as the engine is not mapped to accommodate without it as when it comes to hills. These early versions would then be sluggish as it would have then expect the driver to activate the kickdown switch to gain more power to climb.
Attachment DeletedWell as this sign fitted to most DW's, we are both wrong by a MPH, I'm going to lose soooooo much sleep over that...... Early DB300 have a switch under the throttle pedal which only when your foot is flat down at 100% kickdown will engage, it's set up so you will hear it click if it's been set up correctly DW401 to 425 Have manual kickdown, trust me I've spent many hours being thrown about the 76 route with my mate driving them DW425+ do not have any form of kickdown, they have no intelligent kickdown, you can't throttle pump them, you can't do anything with them to make them kickdown, from the 500's there is not even a switch under the pedal The way they are set up anyway, from DW201 - DW424, if Kickdown is engaged from a standstill, It will rev 2200 in first and 2500 in the 2nd,3rd and 4th, It will rev 2500rpm in first gear only when you kickdown from first into second, They also have a tendency to get stuck in gear when kickdown is used and you have to let off and slow down for it to slam into the next gear, a light appears on the dash but it's not very clear, well to be honest this is a Voith trait that has been around since B7TL's No Euro 5 Enviro 400 has kickdown regardless or there being a switch fitted or not apart from 2 Abellio E400's but they are limited to 30MPH ask 6HP502C , There is no trick to make these buses faster unless you are driving up a hill, the engines are mapped the same for all Euro 5 engines and if you noticed, at the moment they are currently being remapped again to make them even slower Not that is relevant to this post There is a route run by Reading buses/Newbury buses called Jet Black, there is a hill on that route that an moderately packed Enviro 400 in derate mode can't even climb
|
|
|
Post by capitalomnibus on Feb 12, 2015 11:38:53 GMT
DW401 onwards is limited to 44mph, not 42. Early DB300 DW's like 201-300 has kickdown at around 80% pedal position. All DB300 DW's has a spring based kickdown switch installed that pushes from 90%-100% pedal position. However it is not functional. Later DW's i.e like 401 onwards does not have kickdown from 80% pedal position. It wold not overrev unless on a gradient, hard cornering which can fool the tilt switch used for gradient and other methods (which I would not disclose) can still allow them to reach the engines 2200rpm natural max rev limit. They can allow up to 2500rpm for a very short while, but would go back to 2200rpm. 400 series onwards would naturally then upshift between 1500-1700rpm at 90% or even if you tried at 100% pedal position. IIRC those from around DW500 has a better ECU mapping which is more responsive and would get 100% engine torque quicker with the pedal down, but still would not go past a natural rev limit of 1700rpm. (unless otherwise)
The E400's at 59 plate still do have manual kickdown switches, but are activate/deactivate at operators request. They are worst without as the engine is not mapped to accommodate without it as when it comes to hills. These early versions would then be sluggish as it would have then expect the driver to activate the kickdown switch to gain more power to climb.
Well as this sign fitted to most DW's, we are both wrong by a MPH, I'm going to lose soooooo much sleep over that...... Early DB300 have a switch under the throttle pedal which only when your foot is flat down at 100% kickdown will engage, it's set up so you will hear it click if it's been set up correctly DW401 to 425 Have manual kickdown, trust me I've spent many hours being thrown about the 76 route with my mate driving them DW425+ do not have any form of kickdown, they have no intelligent kickdown, you can't throttle pump them, you can't do anything with them to make them kickdown, from the 500's there is not even a switch under the pedal The way they are set up anyway, from DW201 - DW424, if Kickdown is engaged from a standstill, It will rev 2200 in first and 2500 in the 2nd,3rd and 4th, It will rev 2500rpm in first gear only when you kickdown from first into second, They also have a tendency to get stuck in gear when kickdown is used and you have to let off and slow down for it to slam into the next gear, a light appears on the dash but it's not very clear, well to be honest this is a Voith trait that has been around since B7TL's No Euro 5 Enviro 400 has kickdown regardless or there being a switch fitted or not apart from 2 Abellio E400's but they are limited to 30MPH ask 6HP502C , There is no trick to make these buses faster unless you are driving up a hill, the engines are mapped the same for all Euro 5 engines and if you noticed, at the moment they are currently being remapped again to make them even slower Not that is relevant to this post There is a route run by Reading buses/Newbury buses called Jet Black, there is a hill on that route that an moderately packed Enviro 400 in derate mode can't even climb LOL, well we were both a mph out eh. The 500 series DW's do have the spring under the pedal to go from 90-100% like all the ones from DW201 onwards. Just it does not have a physical kickdown switch like the early ones that operated from 80% pedal position. That getting stuck in gear syndrome with Voith boxes had happen with early euro2 Tridents i.e. like TA1, seems a Voith gearbox characteristic. There is a way to make these newer buses still gain revs up to 2000 and above, but has nothing to do with pumping the pedal.
There is one or two E400 euro5 which has an active kickdown switch. It is VERY powerful with the ZF gearbox and would literally outpace a hybrid E400. Other E400's you can create conditions as though you were driving up a hill to make it rev higher, nothing to do with pumping gas pedal either.
|
|
|
Post by 6HP502C on Feb 12, 2015 12:33:01 GMT
I think the original spec 2nd gen E400s (up to 60 reg?) have a switch under the pedal. T110 at Norwood has a working kickdown up to 2000rpm.
|
|
|
Post by M1104 on Feb 12, 2015 12:37:38 GMT
DW401 onwards is limited to 44mph, not 42. Early DB300 DW's like 201-300 has kickdown at around 80% pedal position. All DB300 DW's has a spring based kickdown switch installed that pushes from 90%-100% pedal position. However it is not functional. Later DW's i.e like 401 onwards does not have kickdown from 80% pedal position. It wold not overrev unless on a gradient, hard cornering which can fool the tilt switch used for gradient and other methods (which I would not disclose) can still allow them to reach the engines 2200rpm natural max rev limit. They can allow up to 2500rpm for a very short while, but would go back to 2200rpm. 400 series onwards would naturally then upshift between 1500-1700rpm at 90% or even if you tried at 100% pedal position. IIRC those from around DW500 has a better ECU mapping which is more responsive and would get 100% engine torque quicker with the pedal down, but still would not go past a natural rev limit of 1700rpm. (unless otherwise)
The E400's at 59 plate still do have manual kickdown switches, but are activate/deactivate at operators request. They are worst without as the engine is not mapped to accommodate without it as when it comes to hills. These early versions would then be sluggish as it would have then expect the driver to activate the kickdown switch to gain more power to climb.
View Attachment No Euro 5 Enviro 400 has kickdown regardless or there being a switch fitted or not apart from 2 Abellio E400's but they are limited to 30MPH ask 6HP502C , There is no trick to make these buses faster unless you are driving up a hill, the engines are mapped the same for all Euro 5 engines and if you noticed, at the moment they are currently being remapped again to make them even slower Some of Stagecoach's euro5 E400s have a working kickdown, theirs being on Voith.
|
|