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Stepped No4 cylinder?
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Stepped No4 cylinder?
I've got stepped 051's but never seen a stepped 049 Td.
Anyone?
Anyone?
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Stepped No4 cylinder?
The engine in my avatar has a stepped #4 cylinder. This engine is also in the gallery.
fit90- Diamond Member
- Posts : 1336
Join date : 2011-08-11
Location : Naples, Florida
Re: Stepped No4 cylinder?
WingingIt74 wrote:What did you step in?
It was lucky
So anyone have a stab at an era?
John Goddard- Diamond Member
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Join date : 2011-11-24
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Location : Leyton North East London
Re: Stepped No4 cylinder?
But Bob that looks like it is milled for throttle ring, no?fit90 wrote:The engine in my avatar has a stepped #4 cylinder. This engine is also in the gallery.
Re: Stepped No4 cylinder?
This one does look to have been ground. I have several other stepped #4's that have not been groound though. I am at least the second owner of these cylinders.
fit90- Diamond Member
- Posts : 1336
Join date : 2011-08-11
Location : Naples, Florida
Re: Stepped No4 cylinder?
John Goddard wrote:WingingIt74 wrote:What did you step in?
It was lucky
So anyone have a stab at an era?
70's, it was an upgrade from the thin walled jobs.
Cribbs74- Moderator
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Posts : 11897
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Stepped No4 cylinder?
Ho Kay
It's pre 73 (no mesh) but doh no date on instructions.
It also has the very orangy/coppery gold anodising that I've only seen on the
Mk2 special before. I had hoped I may have scored the 1968 prize.
But at least it's Pukka, I thought I might have pppppp picked up a pup.
It's pre 73 (no mesh) but doh no date on instructions.
It also has the very orangy/coppery gold anodising that I've only seen on the
Mk2 special before. I had hoped I may have scored the 1968 prize.
But at least it's Pukka, I thought I might have pppppp picked up a pup.
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Stepped No4 cylinder?
Cox machine a groove in the cylinders for the new throttle for both .020 and .049/.051, some time in 1969, until 1975 +/-
It wasn't considered a upgrade, just a way to install the throttle barrel.
The 'Screen' cylinders came out in '76 and were very short lived, less then a year, followed by the even rarer stainless steel 'slotted' cylinders, before the now common slotted cylinders appeared in '78
It wasn't considered a upgrade, just a way to install the throttle barrel.
The 'Screen' cylinders came out in '76 and were very short lived, less then a year, followed by the even rarer stainless steel 'slotted' cylinders, before the now common slotted cylinders appeared in '78
Last edited by Mark Boesen on Wed Apr 25, 2012 5:34 pm; edited 1 time in total
Re: Stepped No4 cylinder?
Cheers Mark
I'll put a photo on later this
Morning.
J
I'll put a photo on later this
Morning.
J
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Stepped No4 cylinder?
Dan Sitter is selling a number of stainless slotted cylinders that are on product engines.
http://www.ebay.com/itm/RARE-Cox-049-Model-Airplane-Engine-with-Slotted-Screen-Cylinder-/380406493790?pt=LH_DefaultDomain_0&hash=item5891fe725e
Jason
http://www.ebay.com/itm/RARE-Cox-049-Model-Airplane-Engine-with-Slotted-Screen-Cylinder-/380406493790?pt=LH_DefaultDomain_0&hash=item5891fe725e
Jason
Jason_WI- Top Poster
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Re: Stepped No4 cylinder?
What was the thinking behind these slotted one lads?
John Goddard- Diamond Member
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Join date : 2011-11-24
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Re: Stepped No4 cylinder?
John Goddard wrote:What was the thinking behind these slotted one lads?
Good question John, looks like a suppression type thing. Actually it looks like a hose clamp.
Are we talking steps or screens? Seems like things got off track.
Cribbs74- Moderator
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Posts : 11897
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Stepped No4 cylinder?
Keep from burning your fingers and starting fires is my guess. First was the mesh, then the stainless slotted and finally was the twin slit cylinders which worked.
Jason_WI- Top Poster
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Posts : 3123
Join date : 2011-10-09
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Location : Neenah, WI
Re: Stepped No4 cylinder?
Thanks Jace
Ok so now the plot plot really thickens........
In fact I'm going to start another thread
Ok so now the plot plot really thickens........
In fact I'm going to start another thread
John Goddard- Diamond Member
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Location : Leyton North East London
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