Discussion
Some great informed replies thank you.
Im starting to have the opinion it is unlikely to be a V12 and that he would have been mistaken, but I doubt he would have lied, didn't seem the type.
I had not considered cylinder de-activation technology making a 6/12 cylinder run rough, nor the amplification of vibrations through such a large object.
One thing definitely making me doubt it was a v12 was that apparently on the trip (Very light traffic flow) it managed to average just over 11MPG, which I thought all things considered was pretty remarkable.
I could definitely feel the Volvo I-shift was an automated manual rather than a traditional torque converter auto. There was a gap in power during shifts and reverse and first were very jerky
Im starting to have the opinion it is unlikely to be a V12 and that he would have been mistaken, but I doubt he would have lied, didn't seem the type.
I had not considered cylinder de-activation technology making a 6/12 cylinder run rough, nor the amplification of vibrations through such a large object.
One thing definitely making me doubt it was a v12 was that apparently on the trip (Very light traffic flow) it managed to average just over 11MPG, which I thought all things considered was pretty remarkable.
I could definitely feel the Volvo I-shift was an automated manual rather than a traditional torque converter auto. There was a gap in power during shifts and reverse and first were very jerky
Driver may not be lying but must certainly be miss informed, will definitely be a straight six, all Volvo tractor units are 6 cylinder, right up to the 700 bhp FH16, cant see Volvo building a V12 just for coaches (also given that interior space is a consideration with a coach).
I have driven 460, 480 and 500 bhp FH12/13's (artic tractor units) and never found them rough, even when cold, also some Volvo 44T artic tractor units are achieving 11 mpg with mixed loads (light/heavy/empty trailers), but 8-9 mpg running fully freighted all the time.
You are right about the I-shift being an automated manual (it has a clutch plate), it can also be shifted manualy too, my company likes you to shift manualy when pulling away fully loaded as they tend to over rev a bit when in auto (manualy shifting in the green band at 1500 rpm instead of the motor reving to 2K in auto) .
I have driven 460, 480 and 500 bhp FH12/13's (artic tractor units) and never found them rough, even when cold, also some Volvo 44T artic tractor units are achieving 11 mpg with mixed loads (light/heavy/empty trailers), but 8-9 mpg running fully freighted all the time.
You are right about the I-shift being an automated manual (it has a clutch plate), it can also be shifted manualy too, my company likes you to shift manualy when pulling away fully loaded as they tend to over rev a bit when in auto (manualy shifting in the green band at 1500 rpm instead of the motor reving to 2K in auto) .
Edited by Markgenesis on Sunday 4th August 22:36
hedges88 said:
Some great informed replies thank you.
Im starting to have the opinion it is unlikely to be a V12 and that he would have been mistaken, but I doubt he would have lied, didn't seem the type.
As spaceman said, are you sure the driver didn't just say it was a B12 (which is the model name of a Volvo coach) and you misheard?Im starting to have the opinion it is unlikely to be a V12 and that he would have been mistaken, but I doubt he would have lied, didn't seem the type.
Mr2Mike said:
As spaceman said, are you sure the driver didn't just say it was a B12 (which is the model name of a Volvo coach) and you misheard?
More than likely I am a bit mutton!I had to ask what a coach was limited to and he said 62MPH. Because one day coming back from work in my van up a steep incline on the A505 I was overtaken by a National Express coach that was doing at least 80MPH up the hill!.
He says they take their limiters out, then risk police action by not keeping the tacho
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