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Re: Fuck off Gregzee
Exactly Doc, the veins do two jobs, or I should say have 2 effects.
One is more efficiency at lower speeds ( reduced lag) and 2, it does this by moving the air from blade inlet to exhaust as fast as possible.
Same as best cylinger head design is to move the gas across from inlet to exhaust as fast and smooth as possible.
A turbine is just another engine and obeys roughly the same engineering features really
One is more efficiency at lower speeds ( reduced lag) and 2, it does this by moving the air from blade inlet to exhaust as fast as possible.
Same as best cylinger head design is to move the gas across from inlet to exhaust as fast and smooth as possible.
A turbine is just another engine and obeys roughly the same engineering features really
72... AND STILL ROCKIN..........around the world...... NOT in a chair yet
Now XBX And into HDI.....as well as other ...err.... things.
Now XBX And into HDI.....as well as other ...err.... things.
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Re: Fuck off Gregzee
So that explains why Garrett's are more flexible at lower RPM's then..
Feel like stripping the turbo out on the bus now and see if I can make that a bit more enticing! After all, it is REALLY derated!
Feel like stripping the turbo out on the bus now and see if I can make that a bit more enticing! After all, it is REALLY derated!
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
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Re: Fuck off Gregzee
What little I've read up on bus and coach turbo's suggests that there are about 4 alternative turbine designs available, which just replace the one you have.
Given that there would be quite a bit of govenor, err, adjustment to get the best from any changes, it would also suggest it would have quite an effect on fuel economy too!!
Given that there would be quite a bit of govenor, err, adjustment to get the best from any changes, it would also suggest it would have quite an effect on fuel economy too!!
72... AND STILL ROCKIN..........around the world...... NOT in a chair yet
Now XBX And into HDI.....as well as other ...err.... things.
Now XBX And into HDI.....as well as other ...err.... things.
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Re: Fuck off Gregzee
Well, Cummins offered a variety of turbo's for the 6CT, mine is common for road use spec engines...
Non wastegated unrestricted, so the only thing limiting the boost is the amount of exhaust gas you can move!!
I mean, as is it's quite impresive, it'll blow 2 bar at 1100RPM (peak torque!) but itronically it seems less effiecient at higher engine speeds, like it's only blowing 1.2 bar at 2200RPM, near thr MGS of the engine...
Nevr quite worked out why since there is no wastegate so I'd have thought it would just keep blowing harder the higher the engine speed, unless the veins are designed to work better at lower RPM as per what you said above like....
hhmm....
Non wastegated unrestricted, so the only thing limiting the boost is the amount of exhaust gas you can move!!
I mean, as is it's quite impresive, it'll blow 2 bar at 1100RPM (peak torque!) but itronically it seems less effiecient at higher engine speeds, like it's only blowing 1.2 bar at 2200RPM, near thr MGS of the engine...
Nevr quite worked out why since there is no wastegate so I'd have thought it would just keep blowing harder the higher the engine speed, unless the veins are designed to work better at lower RPM as per what you said above like....
hhmm....
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
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Re: Fuck off Gregzee
You just explained what this is all about, eminently, also proving to me that the faster you spin, the more the efficiency drops off, in your case over 25%.
If a big one loses over a third, that also says that the smaller the turbo the less the drag but still substantial so I will go ahead with my err experiment.
Well draw a plan out on the pub table on Sat pm
If a big one loses over a third, that also says that the smaller the turbo the less the drag but still substantial so I will go ahead with my err experiment.
Well draw a plan out on the pub table on Sat pm
72... AND STILL ROCKIN..........around the world...... NOT in a chair yet
Now XBX And into HDI.....as well as other ...err.... things.
Now XBX And into HDI.....as well as other ...err.... things.
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Re: Fuck off Gregzee
That could be an issue though, I mean, the landlord might not like it if you take his table away with after....
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
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Re: Fuck off Gregzee
Don't tempt me, I've nicked a 4 seater sofa at 2.00 am before now!
....There he goes, one of God's own prototypes, a high powered mutant of some kind never even considered for mass production......too weird too live.....and too rare to die
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Re: Fuck off Gregzee
I was sat discussing forging large rings, with a bunch of Blacksmiths, round a pub table, once.
(like you do) We had to hire a 10 ton crane to get it outside after
(like you do) We had to hire a 10 ton crane to get it outside after
72... AND STILL ROCKIN..........around the world...... NOT in a chair yet
Now XBX And into HDI.....as well as other ...err.... things.
Now XBX And into HDI.....as well as other ...err.... things.
- docchevron132
- Bus Warrior
- Posts: 11929
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Re: Fuck off Gregzee
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.