|
|
|
Gear box story World Meeting
| Author |
Message |
|
bertiewhite
Firing on two.
Joined: January 18th, 2009, 3:58 pm
Posts: 682
Location: Lincolnshire
|
 Re: Gear box story World Meeting ken wrote: the 'oil return scroll' is a type of thread formed on the input shaft. As the shaft spins, it moves any oil which is trying to escape out of the gearbox back towards the chamber in which the crown wheel sits.
Is that the same sort of affair that's on the front of the engine camshaft Ken?
_________________
|
| July 21st, 2010, 4:46 pm |
|
|
|
Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
|
Re: Gear box story World Meeting Thats just a simple thrower where the oil is spun off using centifugal force the gearbox winds the oil back down a'la Archimedes
_________________
Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
|
| July 21st, 2010, 9:31 pm |
|
|
|
bertiewhite
Firing on two.
Joined: January 18th, 2009, 3:58 pm
Posts: 682
Location: Lincolnshire
|
Re: Gear box story World Meeting Sean wrote: Thats just a simple thrower where the oil is spun off using centifugal force
What, this one Sean? 
_________________
|
| July 24th, 2010, 2:38 pm |
|
|
|
Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
|
Re: Gear box story World Meeting "Ill get me coat!" 
_________________
Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
|
| July 24th, 2010, 5:37 pm |
|
|
|
bertiewhite
Firing on two.
Joined: January 18th, 2009, 3:58 pm
Posts: 682
Location: Lincolnshire
|
Re: Gear box story World Meeting Sean wrote: "Ill get me coat!" Seriously, is that the type of thing that Ken was talking about?
_________________
|
| July 25th, 2010, 2:25 am |
|
|
|
Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
|
Re: Gear box story World Meeting yes it is
On the gearbox input shaft there is a double one , the shaft passes thru quite a long tube, the bit that sticks out and holds the release bearing. There is a scroll that rolls the oil down to a mid point( the 2 large central ribs) where there is a drilling and a return pipe/tube to the main box.
For years id tried to find a simple "add on" seal by trying to introduce some sort of o ring into it but it never worked.
The cam one in your picture is the only bit of the crankcase that isnt mechanically sealed and thats why, when the breather goes or the rings are past their best, you get oily deposits around the points box area before it starts to leak else where. and why you get fume staining in the points box.
Sean
ps if your worrying that there is more land than valley thats a perfectly healthy looking cam scroll
_________________
Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
|
| July 25th, 2010, 11:50 am |
|
|
|
bertiewhite
Firing on two.
Joined: January 18th, 2009, 3:58 pm
Posts: 682
Location: Lincolnshire
|
Re: Gear box story World Meeting Sean wrote: The cam one in your picture is the only bit of the crankcase that isnt mechanically sealed and thats why, when the breather goes or the rings are past their best, you get oily deposits around the points box area before it starts to leak else where. and why you get fume staining in the points box.
Sean
ps if your worrying that there is more land than valley thats a perfectly healthy looking cam scroll Cheers Sean, it's all part of the masterclass
_________________
|
| July 25th, 2010, 12:38 pm |
|
|
Who is online |
Users browsing this forum: No registered users and 68 guests |
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
|
|
