929 "ti" cylinder issue

Venom1956 · January 17, 2018, 09:36 PM

Hey guys I tried getting the best pictures I could I'm not sure what this is on the cylinder any ideas? I know some of the ti and aluminum cylinder have aprotective coating on it so wanted some input anyone seen this before?

https://m.imgur.com/a/t6BzX

reddog81 · January 17, 2018, 10:13 PM

I've never seen anyone describe what the actual coating on the ti cylinder is, but I've heard it mentioned a number of times. Supposedly the coating helps protect against the effects of heat - whatever that means. If the coating is compromised you get a dull look - probably similar to those pictures. What kind of cleaners and pads were used on that gun?

I use CLP on my 929 and 325 PD. The 325's manual recommends the use of CLP. Ive never opened the manual for 929 so I'm not sure if it recommends anything specific.

dahermit · January 17, 2018, 10:15 PM

"...some of the ti and aluminum cylinder have aprotective coating on it..." I don't think that there is any such thing as an aluminum revolver cylinder and I don't think Titanium needs any kind of a coating. I have a Titanium object that I pilfered from the scrap bin where I once worked so that I could have a sample of Titanium for reference. It was a socket for a prosthetic limb and appears to be uncoated. It looks and feels much like aluminum only harder to scratch and heavier than Aluminum, but lighter than steel.

Venom1956 · January 18, 2018, 12:11 PM

Yeah Smith made a few alum cylinder revolvers a 22 and 38spl I believe with steel inserts? Idk I just remember people messing them up from using abrasives on it and seeing how this is my only ti revolver figure it best to be cautious. Can ti rust? I don't even know. Did that link to pictures work?

T. O'Heir · January 18, 2018, 12:37 PM

"...Ti and aluminum..." No Al in any revolver cylinder. An M929's cylinder is Ti.
However, Ti and Al get anodised.
As daft as it sounds(and probably is daft), that looks like lint. It come off with normal cleaning?
"...the effects of heat..." Ti lives for heat. The blades in jet engines are Ti.
"...Can Ti rust?..." Not like steel does. Except in sulphuric or hydrochloric acids. Ti oxidizes a protective film in the presence of water.
https://www.azom.com/article.aspx?ArticleID=1336

Venom1956 · January 22, 2018, 01:42 AM

gah I remember now Scandium. Derp thats what I was thinking of.

No it doesn't come off period. I am hesitant to use anything extremely abrasive as i was thinking about the scandium frames. Smith wants me to ship it back. I might just do that. seems excessive but I haven't used it much this year I cant really find grips I like. VZ seem a bit to thin unfortunately.

Master Blaster · January 22, 2018, 03:27 PM

I have a model 43 the air weight version of the model 34. It was made in 1972 and it has an aluminium cylinder. They also made a k frame .22lr with a 10 shot Al cylinder. Most car engines today have an aluminium alloy block, no liners in the cylinders and they hold up much better than the old Iron engine blocks

2damnold4this · January 22, 2018, 05:19 PM

Quote:

Most car engines today have an aluminium alloy block, no liners in the cylinders and they hold up much better than the old Iron engine blocks

Most, if not all,, car engines that have aluminum blocks are sleeved.

Jim Watson · January 22, 2018, 05:24 PM

Lotsa aluminum blocks, without sleeves but with Nickasil hard surface cylinder bores.

2damnold4this · January 22, 2018, 06:15 PM

link

Ricklin · January 22, 2018, 06:38 PM

Seems an odd combination of cars huh.
The similarity is the casting technology used to make the engine block for each cars engine.
Yup, unlined Aluminum bores.

Porsche developed the casting technology for the 928 V8 engine. I don't recall the name of the technology presently.

The Porsche motors basically have glass like cylinder bores that do not wear, thanks to the Silicon in the casting technology.

GM licensed the casting technology from Porsche. GM took shortcuts and we got the Vega, likely the worst engine that Detroit ever produced.

The fatal flaw were the shortcuts GM took in production, mainly focused on time.

The technology was not flawed, the execution of it was.

mete · January 22, 2018, 06:48 PM

Scandium is a rare earth metal -- very expensive ..S&W 's Scandium is just aluminum with about 1 % Scandium !!
The strange named alloys may require careful cleaning etc .Read the instructions.

January 17, 2018, 09:36 PM	#1
Venom1956 Senior Member Join Date: October 4, 2008 Location: WI Posts: 3,656	929 "ti" cylinder issue Hey guys I tried getting the best pictures I could I'm not sure what this is on the cylinder any ideas? I know some of the ti and aluminum cylinder have aprotective coating on it so wanted some input anyone seen this before? https://m.imgur.com/a/t6BzX __________________ E-Shock rounds are engineered to expend maximum energy into soft targets, turning the density mass into an expanding rotational cone of NyTrilium matrix particles, causing neurological collapse to the central nervous system.- Yeah I can do that. I guarantee you will know it if a bicyclist hits your house going 1000 mph. -Smaug

January 18, 2018, 12:11 PM	#4
Venom1956 Senior Member Join Date: October 4, 2008 Location: WI Posts: 3,656	Yeah Smith made a few alum cylinder revolvers a 22 and 38spl I believe with steel inserts? Idk I just remember people messing them up from using abrasives on it and seeing how this is my only ti revolver figure it best to be cautious. Can ti rust? I don't even know. Did that link to pictures work? __________________ E-Shock rounds are engineered to expend maximum energy into soft targets, turning the density mass into an expanding rotational cone of NyTrilium matrix particles, causing neurological collapse to the central nervous system.- Yeah I can do that. I guarantee you will know it if a bicyclist hits your house going 1000 mph. -Smaug

January 18, 2018, 12:37 PM	#5
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	"...Ti and aluminum..." No Al in any revolver cylinder. An M929's cylinder is Ti. However, Ti and Al get anodised. As daft as it sounds(and probably is daft), that looks like lint. It come off with normal cleaning? "...the effects of heat..." Ti lives for heat. The blades in jet engines are Ti. "...Can Ti rust?..." Not like steel does. Except in sulphuric or hydrochloric acids. Ti oxidizes a protective film in the presence of water. https://www.azom.com/article.aspx?ArticleID=1336 __________________ Spelling and grammar count!

January 22, 2018, 01:42 AM	#6
Venom1956 Senior Member Join Date: October 4, 2008 Location: WI Posts: 3,656	gah I remember now Scandium. Derp thats what I was thinking of. No it doesn't come off period. I am hesitant to use anything extremely abrasive as i was thinking about the scandium frames. Smith wants me to ship it back. I might just do that. seems excessive but I haven't used it much this year I cant really find grips I like. VZ seem a bit to thin unfortunately. __________________ E-Shock rounds are engineered to expend maximum energy into soft targets, turning the density mass into an expanding rotational cone of NyTrilium matrix particles, causing neurological collapse to the central nervous system.- Yeah I can do that. I guarantee you will know it if a bicyclist hits your house going 1000 mph. -Smaug

January 22, 2018, 06:38 PM	#11
Ricklin Senior Member Join Date: February 22, 2008 Location: SW Washington state Posts: 2,011	Chevy Vega / Porsche 928 Seems an odd combination of cars huh. The similarity is the casting technology used to make the engine block for each cars engine. Yup, unlined Aluminum bores. Porsche developed the casting technology for the 928 V8 engine. I don't recall the name of the technology presently. The Porsche motors basically have glass like cylinder bores that do not wear, thanks to the Silicon in the casting technology. GM licensed the casting technology from Porsche. GM took shortcuts and we got the Vega, likely the worst engine that Detroit ever produced. The fatal flaw were the shortcuts GM took in production, mainly focused on time. The technology was not flawed, the execution of it was. __________________ ricklin Freedom is not free

January 17, 2018, 10:13 PM	#2
reddog81 Senior Member Join Date: October 16, 2014 Location: Iowa Posts: 1,634	I've never seen anyone describe what the actual coating on the ti cylinder is, but I've heard it mentioned a number of times. Supposedly the coating helps protect against the effects of heat - whatever that means. If the coating is compromised you get a dull look - probably similar to those pictures. What kind of cleaners and pads were used on that gun? I use CLP on my 929 and 325 PD. The 325's manual recommends the use of CLP. Ive never opened the manual for 929 so I'm not sure if it recommends anything specific.

January 17, 2018, 10:15 PM	#3
dahermit Senior Member Join Date: October 28, 2006 Location: South Central Michigan...near Posts: 6,501	"...some of the ti and aluminum cylinder have aprotective coating on it..." I don't think that there is any such thing as an *aluminum* revolver cylinder and I don't think Titanium needs any kind of a coating. I have a Titanium object that I pilfered from the scrap bin where I once worked so that I could have a sample of Titanium for reference. It was a socket for a prosthetic limb and appears to be uncoated. It looks and feels much like aluminum only harder to scratch and heavier than Aluminum, but lighter than steel.

January 22, 2018, 03:27 PM	#7
Master Blaster Senior Member Join Date: October 11, 1999 Location: One of the original 13 Colonies Posts: 2,281	I have a model 43 the air weight version of the model 34. It was made in 1972 and it has an aluminium cylinder. They also made a k frame .22lr with a 10 shot Al cylinder. Most car engines today have an aluminium alloy block, no liners in the cylinders and they hold up much better than the old Iron engine blocks

January 22, 2018, 05:24 PM	#9
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,534	Lotsa aluminum blocks, without sleeves but with Nickasil hard surface cylinder bores.

January 22, 2018, 06:15 PM	#10
2damnold4this Senior Member Join Date: August 12, 2009 Location: Athens, Georgia Posts: 2,526	link

January 22, 2018, 06:48 PM	#12
mete Senior Member Join Date: June 14, 2004 Location: NY State Posts: 6,575	Scandium is a rare earth metal -- very expensive ..S&W 's Scandium is just aluminum with about 1 % Scandium !! The strange named alloys may require careful cleaning etc .Read the instructions. __________________ And Watson , bring your revolver !

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