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Rok Star Update
Posted by
prof beard
,
03 December 2011
·
1,018 views
This is a follow up from my review of the Rok Star
The Rok Star was generally well received on launch, but some purchasers suffered problems with the polycarbonate tanks cracking. (Rok dealt with these promptly I should stress). It transpired that this problem isn't confined to the ark Star but affects any tank made using polycarbonate. Apparently certain juices react with the polycarbonate to alter the makeup of the material.
Wayne posted the following list sent to him by Arry:
Polycarbonate will/may crack with Any juice that has:
Sour flavors
Malic acid
Citrus acid
Cinnamon like "atomic cinnamon" types, not warm cinnamon like cinnamon coffe cake, this is okay
Wintergreen juice or flavoring
TPA ripe banana flavoring
TPA honeysuckle flavoring
TPA maraschino cherry flavoring
TPA cherry blossom flavoring
TPA root beer flavoring
Mrs. T's strawberry shortcake, snickerdoodle
KBV Hummingbird nectar
mimosa(because of the orange)
cola(because of cinnamon)?
Vapor Renu Teaberry, cherry vanilla (possibly most of their flavors)
Vapor Renu Mt. Dew baha blast and Strawberry limeade
Oil based/e liquid that conains essential oils, when mixed with pg/vg, creates esters which will crack plastics
E liquids that contain triacetin, used in vg liquids to carry flavor more effectively
Vapalicious Gooey Butter Cake
Nutmeg
Clove oil
Mt. Dew flavoring
TPA Cinnamon Danish flavoring
Sassafras
Rawrvapor Hawaii Sunrise
TPA Vanilla Custard flavoring
Tasty Vapor Cherry Cola
Perfumer's Apprentice lists triactetin as in ingredient in some of their flavors, so be sure to check that out.
Disclaimer: These are not "bad" juices. They just have the potential to cause cracking in tank systems using polycarbonate tubing.
Rok's response to this was very positive - they selected a new tank material (which they refer to as "stealth tank") and told everyone who had purchased the first Rok Stars that they would be sent new tanks free of charge.
They proved to be true to their words and I received a package containing two new caps, tanks and atomisers.
It;s important to stress that the new cap, tank and atomisers are NOT mixable with old versions - the batteries will work with both versions but that's it.
The first thing you notice about the new parts is the new combination is shorter:
The atomiser connections are unchanged - I checked that the new tanks and atomiser worked with my 901-801 adapter and they did (see "The Rokdriver" )
These shots show the difference between the old and new tanks and atomisers:
(New version at front)
(New version on the right)
(New version on the left)
The new tank certainly feels "more substantial" to me, and everything appears to work the same. I think Rok deserve praise for responding to feedback so quickly.
The Rok Star was generally well received on launch, but some purchasers suffered problems with the polycarbonate tanks cracking. (Rok dealt with these promptly I should stress). It transpired that this problem isn't confined to the ark Star but affects any tank made using polycarbonate. Apparently certain juices react with the polycarbonate to alter the makeup of the material.
Wayne posted the following list sent to him by Arry:
Polycarbonate will/may crack with Any juice that has:
Sour flavors
Malic acid
Citrus acid
Cinnamon like "atomic cinnamon" types, not warm cinnamon like cinnamon coffe cake, this is okay
Wintergreen juice or flavoring
TPA ripe banana flavoring
TPA honeysuckle flavoring
TPA maraschino cherry flavoring
TPA cherry blossom flavoring
TPA root beer flavoring
Mrs. T's strawberry shortcake, snickerdoodle
KBV Hummingbird nectar
mimosa(because of the orange)
cola(because of cinnamon)?
Vapor Renu Teaberry, cherry vanilla (possibly most of their flavors)
Vapor Renu Mt. Dew baha blast and Strawberry limeade
Oil based/e liquid that conains essential oils, when mixed with pg/vg, creates esters which will crack plastics
E liquids that contain triacetin, used in vg liquids to carry flavor more effectively
Vapalicious Gooey Butter Cake
Nutmeg
Clove oil
Mt. Dew flavoring
TPA Cinnamon Danish flavoring
Sassafras
Rawrvapor Hawaii Sunrise
TPA Vanilla Custard flavoring
Tasty Vapor Cherry Cola
Perfumer's Apprentice lists triactetin as in ingredient in some of their flavors, so be sure to check that out.
Disclaimer: These are not "bad" juices. They just have the potential to cause cracking in tank systems using polycarbonate tubing.
Rok's response to this was very positive - they selected a new tank material (which they refer to as "stealth tank") and told everyone who had purchased the first Rok Stars that they would be sent new tanks free of charge.
They proved to be true to their words and I received a package containing two new caps, tanks and atomisers.
It;s important to stress that the new cap, tank and atomisers are NOT mixable with old versions - the batteries will work with both versions but that's it.
The first thing you notice about the new parts is the new combination is shorter:
The atomiser connections are unchanged - I checked that the new tanks and atomiser worked with my 901-801 adapter and they did (see "The Rokdriver" )
These shots show the difference between the old and new tanks and atomisers:
(New version at front)
(New version on the right)
(New version on the left)
The new tank certainly feels "more substantial" to me, and everything appears to work the same. I think Rok deserve praise for responding to feedback so quickly.
