By: MerlinPete - 9th February 2011 at 22:50
Can anyone tell me why the rocker shafts rotate? Were they used as accessory drives at the other end or something?
As David said, they are indeed for accessory drives, but the shafts themselves don`t rotate, the gears run on bronze bushes. The rocker shafts are keyed into the rear pedestal.
It`s a question that comes up very often.
Pete
By: Arabella-Cox - 9th February 2011 at 21:07
You are welcome.
Good luck with whatever you do with them.
David.
By: norman cooper - 9th February 2011 at 20:58
Merlin Cam Shaft
Hi Dairwin Many thanks for these facts,these bit have been laying here for 25 years and yesterday i found them when I was having a tidy up and having registered today on this Forum having never used any forum before I have now got a complete understanding of what they are all about.now I will have to think what I am going to do with them.
Regards Norman
By: Arabella-Cox - 9th February 2011 at 20:40
Yes.
The term ‘bank’ refers to the cylinder banks that the cam assembly services.
By: norman cooper - 9th February 2011 at 20:24
Marlin Cam Shaft
Hi So the A shaft has two gears behind the crown wheel and is on the right hand bank looking forward from the supercharger, have i got that correct,
Regards Norman
By: Arabella-Cox - 9th February 2011 at 20:12
Hi how can i tell which cam is the left or right bank ( side ) and which end are the gears, at the front ( prop end ) or the blower end?
Regards Norman
Your third photo has them in the correct order; the top one is b-bank, then a-bank. The gears are at the supercharger end.
By: norman cooper - 9th February 2011 at 20:03
Merlin cam shaft
Hi how can i tell which cam is the left or right bank ( side ) and which end are the gears, at the front ( prop end ) or the blower end?
Regards Norman
By: Arabella-Cox - 9th February 2011 at 19:58
Hi thanks for that, how would i find the year the engine was made ? were the Mk 24 engines ever fitted to the Hurricane, Spitfire or Mosquito.
Regards Norman
The Rolls Royce Heritage trust can advise on age and perhaps some history of the batch of engines this engine came from.
There is a lot of information on the web on what engines types were installed on different aircraft.
By: Arabella-Cox - 9th February 2011 at 19:51
Can anyone tell me why the rocker shafts rotate? Were they used as accessory drives at the other end or something?
There are several accessory drives on the rear ends of the rocker shafts; two for air compressors, and a hydraulic pump. Also on the B-bank, an engine speed take off in the centre of the rocker cover itself.
By: Rocketeer - 9th February 2011 at 19:46
nope only Lancs and yorks….the XX was Hurricane 2…..
By: AndyG - 9th February 2011 at 19:34
Can anyone tell me why the rocker shafts rotate? Were they used as accessory drives at the other end or something?
By: norman cooper - 9th February 2011 at 19:33
Merlin cam shafts
Hi thanks for that, how would i find the year the engine was made ? were the Mk 24 engines ever fitted to the Hurricane, Spitfire or Mosquito.
Regards Norman
By: Arabella-Cox - 9th February 2011 at 19:14
Merlin Mk24. Engine number 201291. A single stage, two speed engine. Installed in Lancasters and Yorks.
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February 9, 2011 at 7:09 pm