151
General Discussion Area / Re: God Bless Vamps xxxx
« on: 26 September 2015, 09:55:59 »
Very sad to hear. Sincere condolences to all family and friends. 
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152
General Discussion Area / Re: A sad find
« on: 23 August 2015, 21:50:34 »
I liked that.
Quite sure I would have liked your brother as well.
Nice video that is a good reminder to you of him. Obviously he impressed a number of folks.
.....and that's good.
Quite sure I would have liked your brother as well.
Nice video that is a good reminder to you of him. Obviously he impressed a number of folks.
.....and that's good.
153
General Discussion Area / Re: Working as a film 'extra'.
« on: 12 August 2015, 20:01:08 »
Cheers Mathew and others.
Got a call today for a shoot tomorrow but just too short notice.
Will see what Monday brings. It's a shoot for a Victorian golfing film and I'm background, as far as I currently understand things, but as always, subject to change.
One of the organiser chappies I spoke to last week at 'wardrobe' (seemed like a producer or descision making type fella) asked my background. Appeared impressed with my driving/vip/evasive/SED history as well as my experience with firearms handling. Said there were current shortages within the industry. Said to remind him next week and he would point me in a few diverse directions. Seemed genuine so will see what happens. In any event, another box ticked in the bucket list!
Luvviedom becons!!!
Got a call today for a shoot tomorrow but just too short notice.
Will see what Monday brings. It's a shoot for a Victorian golfing film and I'm background, as far as I currently understand things, but as always, subject to change.
One of the organiser chappies I spoke to last week at 'wardrobe' (seemed like a producer or descision making type fella) asked my background. Appeared impressed with my driving/vip/evasive/SED history as well as my experience with firearms handling. Said there were current shortages within the industry. Said to remind him next week and he would point me in a few diverse directions. Seemed genuine so will see what happens. In any event, another box ticked in the bucket list!
Luvviedom becons!!!
154
General Discussion Area / Re: Working as a film 'extra'.
« on: 11 August 2015, 22:56:32 »
And, naw.... Gave up on porn roles when the birds were older than me..... 
155
General Discussion Area / Working as a film 'extra'.
« on: 11 August 2015, 22:55:40 »
Sounds a bit off the wall and also teeing myself up for abuse but - anyone any experience of working as a film extra?
Got a couple of paying leads to appear in films but dunno the ins/outs/payment/etc.
Ta....
Got a couple of paying leads to appear in films but dunno the ins/outs/payment/etc.
Ta....
156
General Discussion Area / Re: Hard 2 days training over, and I passed!!!
« on: 17 July 2015, 21:00:08 »
Good stuff Mike. Onwards and upwards! 
157
General Car Chat / MOVED: An hour to save your life
« on: 02 June 2015, 21:51:39 »
This topic has been moved to General Discussion Area.
http://www.omegaowners.com/forum/index.php?topic=130785.0
http://www.omegaowners.com/forum/index.php?topic=130785.0
158
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 20:34:59 »
This is how I used to measure bore wear........
http://farm2.static.flickr.com/1012/1402400925_0841df035c.jpg?v=0.
http://farm2.static.flickr.com/1012/1402400925_0841df035c.jpg?v=0.
160
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 20:28:29 »
Generally speaking, yes, but not all engines are the same.
The ones I cut my teeth on were two stroke diesels that put as much power running backwards as forwards!
The ones I cut my teeth on were two stroke diesels that put as much power running backwards as forwards!
161
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 20:17:15 »
Side wear is due to crankshaft rotation and crankshaft throw. Combustion pressure is trying to push the piston straight down the bore. The throw of the crankshaft is tiring to turn up and down movement into rotary. It will exert a degree of sideways-pressure on the piston on the down stroke and can wear on the cylinder wall.
Wear here can, over time, result in what's known as 'piston slap' where wear is to an extreme and piston is floating about side to side, normally with gudgeon pin wear as well.
Wear here can, over time, result in what's known as 'piston slap' where wear is to an extreme and piston is floating about side to side, normally with gudgeon pin wear as well.
163
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 20:03:46 »
Honing and glaze bursting are similar but different. Glaze bursting can be done with emery and oil but you have to be carefull of contamination of carbide dust from emery into guts of engine if pistons are still in place.
Honing is generally done with a specialist honing tool with Pistons out.
Honing is generally done with a specialist honing tool with Pistons out.
164
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 20:00:26 »
Baza - pretty much, yup. Didn't want to go into wear side and ovality too early!
165
General Car Chat / Re: Cylinder block theory Q's
« on: 02 June 2015, 19:55:51 »
Start with out of parallel.
Pistons are generally very slightly a smaller diameter than the bore. Talking fractions here. The piston rings exert outward force within their grooves onto the cylinder wall. The ring ends when it's assembled, are offset from each other to provide a distorted path for combustion gasses so hopefully reducing blowby.
The outward pressure of the rings onto the bore wall will then wear the outer surface of the rings as the rub on the cylinder walls, as will the cylinder walls obviously. The wear will be non existent above the top compression ring as the compression ring never reaches it and, if the rings do their job, keep the piston central in the bore and thus also not touch the sides. Thus, no wear there.
Below where the top ring reaches will be most wear as combustion gasses try to escape. It wears the side. You have seen the result of a failed head gasket and possible groove cut in head or top of block? As the piston moves down, pressure in the most general of terms, reduces thus wear is reduced.
Measure the bore in increments from top to bottom and you will see that the extreme top and extreme bottom are basically at factory standard. It increases from bottom to top until it reaches the step created by the top ring.
Pistons are generally very slightly a smaller diameter than the bore. Talking fractions here. The piston rings exert outward force within their grooves onto the cylinder wall. The ring ends when it's assembled, are offset from each other to provide a distorted path for combustion gasses so hopefully reducing blowby.
The outward pressure of the rings onto the bore wall will then wear the outer surface of the rings as the rub on the cylinder walls, as will the cylinder walls obviously. The wear will be non existent above the top compression ring as the compression ring never reaches it and, if the rings do their job, keep the piston central in the bore and thus also not touch the sides. Thus, no wear there.
Below where the top ring reaches will be most wear as combustion gasses try to escape. It wears the side. You have seen the result of a failed head gasket and possible groove cut in head or top of block? As the piston moves down, pressure in the most general of terms, reduces thus wear is reduced.
Measure the bore in increments from top to bottom and you will see that the extreme top and extreme bottom are basically at factory standard. It increases from bottom to top until it reaches the step created by the top ring.