Finally its here! My video on the ZF gearbox, would of liked to of done it sooner but finding a ZF as loud as the B10M at the end is hard to come across.
Any way here is a selection of buses which all have the ZF gearbox in common, I have attempted for the video to start off with the quieter ZFs and they get progressively louder through out the video but notice the word attempt...
The ZF gearbox i find is the best of the three gearboxes (see other videos on my channel for voith and allison) including reasons such as it is the most economical, gear ratios are better than the other gearboxes so gives the bus better acceleration, retarder not as sharp as voiths so braking is easier to list a few reasons. The biggest downside to ZFs are on many the gearchanges aren't perfect and you can feel a slight jolt especially from 1st to 2nd and especially on volvo olympian it likes to go bang...
Anyway here is a list of buses in the video and what ZF qualities they possess!
KX08KZD (Scania N230UD): You can hardly hear the ZF at all in the (apart from maybe slowing down in second gear) but you can tell its ZF from how fast it goes through gears.
YN64AKV (Scania N230UD): Same as above but a louder gearbox.
YN16WVR (Scania N250UD): Similar to above but you can gear the axles making a typical ZF gurgling sound.
SN15LNK (Enviro 400 trident): No ZF sound but a clunk and gurgling axles.
SN15LNR (Enviro 400 trident): Same as SN15LNK but at faster speeds.
N715TPK (Dennis Dominator): Mainly engine and axle sounds but you can tell from how it changes gear and from how quickly it changes gear that it is ZF.
P684SVL (Volvo olympian): typical quite quiet ZF groaning when accelerating and slowing down
MIB7717/J322BSH (Leyland Olympian): A nice ZF to this but long air releases causing a lot of hissing and a loud diff when slowing down but groaning in gears 1 & 2 is noticeable.
FX05GXL (Volvo B7RLE): Again another nice ZF you can hear monaing through the gears even slightly in neutral!
M916MKM (Volvo Olympian): A very loud ZF in gear 1! ZF goes quiet after that until decelerating in gear 2.
S958URJ (Volvo Olympian): Another volvo olympian with a great ZF gearbox you can hear moaning a lot even in neutral! Sadly gearbox was a bit knackered and was the reason for its withdrawal.
YX59CAA (MAN 14.240): Should of really put this earlier in the video but hey ho, this is a good example of the further away from the engine you sit the louder the gearbox.
L622TDY (Volvo B10M): An insanely loud gearbox you can hear groaning like mad! Good example of how a ZF sounds like with kickdown and non kickdown.
Thanks for watching!
20 авг 2016
