On the first day of Joblessness the srinath did ...

[The Buddha]

Dropped 82 quid on a set of tie rod ends ... then spent 2 hours at mechanic, then went and got 134a at wally's, then went back and filled ... AC now is like a spring day ... instead of summer ... maybe 1 more 134 anyway its reading 35 psi. 45 is max. Used to be 25. Maybe 1 more ...
Then went to junkyard and bought chopper front end for savage ...
Then went to welder talked about flanges, bars and got home. Then coated the innards of a GS swingarm.
Tommorow - powdercoating run, and more savage BS.
Friday - flanges start (proposed).
Cool.
Srinath.

[makenzie71]

$170 for a set of tie rod ends seems steep...what are they for?

I've always filled my ac systems up to the max...especially with 134.  I hate 134 soooooo much.  I'm glad my dad had sense enough to buy about $5000 worth of 22 and 12 before the ban.  Bought it for $2 a can and was making $25~30 when he started selling.

[bettingpython]

$170 for a set of tie rod ends seems steep...what are they for?

I've always filled my ac systems up to the max...especially with 134.  I hate 134 soooooo much.  I'm glad my dad had sense enough to buy about $5000 worth of 22 and 12 before the ban.  Bought it for $2 a can and was making $25~30 when he started selling.

there is no ban on 22 yet. production of new r-22 is to be halted eventually and consumption caps will be placed on sales of R-22 then you have to use recycled. The planned final consumption cap reduction is targeted for 2030.

Just bought a fresh 30# cylinder 2 weeks ago.

http://www.arap.org/regs/montreal.html

Thank the Canucks for this one by the way.

[ajaxgs]

look for some new stuff called dura cool or red tec they call it 12a we use it in canada because you need a lic to purchase 134 wooks better than 12

[bettingpython]

look for some new stuff called dura cool or red tec they call it 12a we use it in canada because you need a lic to purchase 134 wooks better than 12

I wouldn't even consider replacing my refrigerant with that stuff.

May hydrocarbon refrigerants be used to replace CFC-12, commonly referred to as "Freon® ," in cars?
No. It is illegal to use hydrocarbon refrigerants like HC-12a® and DURACOOL 12a® as substitutes for CFC-12 in automobile or truck air conditioning under any circumstances.

Why is it legal to use hydrocarbon refrigerants as CFC-12 substitutes in industrial process refrigeration, but not elsewhere?
EPA has not yet received data that adequately address the safety issues of hydrocarbon refrigerants in applications other than industrial process refrigeration. Flammability risks depend on the type of refrigeration or air-conditioning system. Industrial process refrigeration, for instance, does not include air conditioning, which pipes refrigerated air directly into occupied areas. Industrial process refrigeration generally refers to complex customized appliances used in the chemical, pharmaceutical, petrochemical and manufacturing industries. Direct risk to human health is reduced in industrial process refrigeration; for example, access to areas near the system is typically restricted. In addition, other regulations exist to protect the safety of industrial workers.

There is nothing wrong with 134a it is minimally less effecient than R12 was most problems occur from charging and not understanding ideal vapor pressur for the atmospheric temperature when charging.

[ajaxgs]

12a has a higher flash piont than 134

[The Buddha]

$82 was tie rod ends for a 97 f-150.
OK I am 1/2 way on the 134 - max it ... OK.
Cool.
Srinath.

[bettingpython]

134a is not an alkane hydrocarbon blend, flash points are meaningless for gasses.

12a is sensitive to static discharge.

134a MSDS flamability

FLAMMABLE PROPERTIES
FLASH POINT: Gas, not applicable per DOT regulations
FLASH POINT METHOD: Not applicable
AUTOIGNITION TEMPERATURE: >750°C
UPPER FLAME LIMIT (volume% in air): None*
LOWER FLAME LIMIT (volume% in air): None*
*Based on ASHRAE Standard 34 with match ignition
FLAME PROPAGATION RATE (solids): Not applicable
OSHA FLAMMABILITY CLASS: Not applicable
EXTINGUISHING MEDIA:
Use any standard agent – choose the one most appropriate for type of surrounding fire (material itself is not flammable)
UNUSUAL FIRE AND EXPLOSION HAZARDS:
Genetron 134a is not flammable at ambient temperatures and atmospheric pressure. However, this material will become
combustible when mixed with air under pressure and exposed to strong ignition sources.

12a MSDS flamability

AUTO-IGNITION TEMPERATURE: 1600 F

FLASHPOINT: Not Available

LOWER FLAMMABLE LIMIT (LEL): 1.9%

UPPER FLAMMABLE LIMIT (UEL): 8.5%

EXTINGUISH MEDIA: If possible, stop flow of gas. Use water to cool fire - exposed tanks, surroundings and to protect personnel working on shutoff. Water spray, dry powder, or carbon dioxide can be directed at flame area to reduce fire intensity. Do not extinguish flames unless leak can be stopped.

HAZARDOUS COMBUSTION PRODUCTS: Normal combustion forms oxides of carbon.

SENSITIVITY TO STATIC DISCHARGE: Vapor may ignite if exposed to static discharge.

EXPLOSION DATA: Sensitivity to impact. Mixture is not sensitivity.

FIRE AND EXPLOSION HAZARD: Flammable vapor may form if allowed to mix with air. Accumulation of gas is an ignition hazard. Vapors are heavier than air and may travel to an ignition source.

[makenzie71]

ok not 22...whatever it was that they banned for public sale a decade or two ago.

[bettingpython]

ok not 22...whatever it was that they banned for public sale a decade or two ago.

R-12, R-134a is it's replacement. It doesn't do as well in retrofit applications because its vapor pressure is a little higher and its heat transfer is a little lower, it needs a slightly larger codensing coil volume and surface area but if the AC you have is designed for it it's just as good and does OK in a retrofit situation. It can still be bought but it's prohibitively expensive anymore. I can buy it with my License but there is no new manufactured stock available it is no longer being produced everything available now is reclaimed and recycled.