Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
-
dongfang
- Specialist 4
- Posts: 448
- Joined: Sun Aug 27, 2006 8:02 am
- Location: Switzerland
Thu May 22, 2008 3:13 pm
Hi,
Has anybody else experienced heat resistance problems with KY Jelly or the like (silicone oil) as a lubricant?
I used it in my new homemade pump. Today was the SECOND time it boiled, and turned into a white sticky material (like 3/4 hardened epoxy) that caused my check valve to stick open. That always happens when I have got around 4 bar in the chamber ...
I guess I have to find something else for that pump. Never going to use KY (for the pump
) again.
Regards
Soren
-
Hotwired
- First Sergeant 3
- Posts: 2599
- Joined: Fri Oct 13, 2006 5:51 am
- Location: UK
Thu May 22, 2008 3:31 pm
Eh, use good old engine/bike oil, KY jelly is not a mechanical lubricant. Well machine lubricant at any rate.
-
psycix
- Sergeant Major 4
- Posts: 3684
- Joined: Mon Jun 25, 2007 7:12 am
- Location: The Netherlands
Thu May 22, 2008 3:59 pm
Hotwired wrote:Eh, use good old engine/bike oil, KY jelly is not a mechanical lubricant. Well machine lubricant at any rate.
Use real mechanical lubricant if you can, but do note that some types may eat your o-rings
-
jrrdw
- Moderator
- Posts: 6572
- Joined: Wed Nov 16, 2005 5:11 pm
- Location: Maryland
- Has thanked: 39 times
- Been thanked: 22 times
-
Contact:
Thu May 22, 2008 6:13 pm
White lithium greese resist water. Commonly used in boat trailer wheel bearings. This brings up a interesting question. Do pneumatic cannons built condensation drops inside the chamber/s?
-
dongfang
- Specialist 4
- Posts: 448
- Joined: Sun Aug 27, 2006 8:02 am
- Location: Switzerland
Fri May 23, 2008 6:25 am
Hi,
I don't find lithium grease here, but I guess I got to look harder...
Regards
Soren
-
Necrosis
- Specialist 2
- Posts: 239
- Joined: Tue Jul 03, 2007 10:03 am
Fri May 23, 2008 6:52 am
If only JSR was here to see this topic...
You can use normal car fat/grease too.
Allthough we may be the most intelligent creature on this planet, we are also the most inconsistent.
To find peace within our existence we often create a logic that endangers our lives.
-
trae08
- Corporal
- Posts: 520
- Joined: Sun Jul 09, 2006 2:14 pm
- Location: florida
Fri May 23, 2008 7:37 am
try dish soap... or maybe vasoline
Marvin the Martian: Where's the kaboom? There was supposed to be an earth-shattering kaboom!
Marvin the Martian: The Earth? Oh, the Earth will be gone in just a few seconds.
PCGUY wrote:Congrats, your the first donating member I have had to ban.
-
Gippeto
- First Sergeant 3
- Posts: 2504
- Joined: Sat Jan 19, 2008 10:14 am
- Location: Soon to be socialist shit hole.
- Has thanked: 2 times
- Been thanked: 17 times
Fri May 23, 2008 9:00 am
I understand why water based lubricants would "boil" (but @ only 4Bar?), but I'm very surprised that silicone oil didn't work.
DC200 50CS has a service temp of -40C to 200 C
Anyhow, I have been using whatever oil (petroleum based) was at hand without problems. Ranging from 10wt to 20w50.
"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
