Discontinued The Persei Vaporizer for herbs and concentrates.

eckstrakt

Member
wow....i am new here and believe after searching researching and reresearching.....i believe this is THE setup i need. I am excited to order my Persei and a HercSR74x for my shatter/wax. Excited for the new release also...not sure I can wait for it though and may have to order the Herc until the launch of the new cart
 
Definitely worth picking up the herc it's been my daily driver since August and I'm still amazed by how happy it makes me so happy I bought the 71 for even more power lol
This brings up a question... What is the difference between the 71, 74, and 74x as far as what the end user can tell w/ their vaping experience?
 
ragnorokk,

lonelyhero

the lost soul
Company Rep
71 has solid screw based adjustments in the bottom adapter, press fitting on the center post, non threaded cap, and the rod runs the hottest at 1.5-1.7 ohm

74 was spring loaded bottom insulator, spring loaded center pin, a threaded top cap and a rod at about 2.4 ohm

74x is Back to the solid screw connection insulator, spring loaded center pin, shorter top chamber, and the 2.4 ohm rod

As for the experience it depends on the person as I learned and got more consistent results I found a sweet spot where I can get any sized hit I'd like and can push it past my own limits and cough up a lung if I'm not careful
 
71 has solid screw based adjustments in the bottom adapter, press fitting on the center post, non threaded cap, and the rod runs the hottest at 1.5-1.7 ohm

74 was spring loaded bottom insulator, spring loaded center pin, a threaded top cap and a rod at about 2.4 ohm

74x is Back to the solid screw connection insulator, spring loaded center pin, shorter top chamber, and the 2.4 ohm rod

As for the experience it depends on the person as I learned and got more consistent results I found a sweet spot where I can get any sized hit I'd like and can push it past my own limits and cough up a lung if I'm not careful

So, maybe I should ask for some sort of qualitative analysis, because I'm not following -- you said you wanted the extra power, but did not explain what you found to be shortcomings on the 74(x). What reason do you prefer the 71 over the 74(x) herc? Do they not get hot enough for you? Does the higher resistance rod on the 74 then produce a cooler, but perhaps wispier vape? Is there a difference for cleaning or maintaining them that prompted the decision? For instance, the threaded vs non-threaded top caps, or perhaps the different sized top chamber makes some difference?

I know a lot of it may be personal preference, but at $100 I can't really afford to buy more than one whole unit just for personal analysis, so any further explanation of why I'd want one over the other would be much appreciated (in hopes of making fewer missteps on the road to a vape that I hate less).
 
ragnorokk,

c76man

In search of the best terps and smoothest vapor
@ragnorokk I have all three Herc versions. I personally prefer the extra power of the 71. But I think that is really subjective. The 74 is more forgiving IMO. They all require slightly nuanced technique, not hugely different though. The 71 requires more button control for me, but I get to huge clouds a few seconds faster with the 71. They are all a good choice, though.
 

spoutti

Well-Known Member
Can I put a sr-71 white rod into my sr-74x?
No, but you can put an sr74(x) in the sr71.

So, maybe I should ask for some sort of qualitative analysis, because I'm not following -- you said you wanted the extra power, but did not explain what you found to be shortcomings on the 74(x). What reason do you prefer the 71 over the 74(x) herc? Do they not get hot enough for you? Does the higher resistance rod on the 74 then produce a cooler, but perhaps wispier vape? Is there a difference for cleaning or maintaining them that prompted the decision? For instance, the threaded vs non-threaded top caps, or perhaps the different sized top chamber makes some difference?

I know a lot of it may be personal preference, but at $100 I can't really afford to buy more than one whole unit just for personal analysis, so any further explanation of why I'd want one over the other would be much appreciated (in hopes of making fewer missteps on the road to a vape that I hate less).
You need a vw/vv option to run the sr71 nicely. Sometimes the post comes up when you open the bottom chamber, making it less user friendly to scrape the bottom chamber. Untill you dial down your herc, it be bothersome. I havent experiment with 2 coils, but @SamuraiSam says the sr71 design screams 2 coils (but double the buffer).

I would suggest you the sr74x. Easier learning curve, harder to burn your load etc. But you already have a portable vv battery to fire the sr71 properly, going around the need to expertly pulse yourslef a nice cloud (my v3 top missfires making it harder). If 30$ is considerable, and servicing your unit more oftently at 1st is not a problem, the sr71 might be as good. But the sr74x is the subtle better choice imho

I will let you know when I get my vv eleaf istick how well it fares with my hercules. Waiting for singapour mail!
 
Was having problems with my 50w setup, was worried I'd wasted some $$ on the stupid thing. Voltage kept dropping during use. It appears my 7.4v KISS cart is actually the offending party, as it's resistance reads all over the place in my mod and also in my voltage/ohm meter -- voltage drop was presumably to keep me from exploding my face.

Reads from 0.1 ohm to 2.1ohm, and I get "atomizer low" warning on my mod (saw the ohm drop from 0.3 to 0.2, to 0.1, then the warning). I'm assuming it has some sort of short? I'd only ever dry fired it for 0.4-0.6s bursts a few times to clear it of its brand new smell (as advised by w9tech tech support) so I hadn't had a chance to notice any monkey business until this week. I have now tried both my 3.7v carts with no issues on the battery, and their resistance reads are static every time. I wish I had a second 7.4v KISS cart to test against, but I don't. Nonetheless, the resistance being all over the place whether hot or cold (left alone for 30min and tried again in both mod and ohm meter) seems like something is wrong in there.
 
ragnorokk,

lonelyhero

the lost soul
Company Rep
With the herc I do prefer the 71 many users say the spring loaded 74x is easier to maintain but I dissagree I prefer the interference fit of the 71 center pin/rod and greatly prefer the 71 style non spring loaded bottom insulator I haven't tried 2 coils I prefer to load just enough on top of the buffer to vape for a day I also greatly recommend the nibbler xl or some other method of seeing the vapor while learning how to control the herc in any form
 
With the herc I do prefer the 71 many users say the spring loaded 74x is easier to maintain but I dissagree I prefer the interference fit of the 71 center pin/rod and greatly prefer the 71 style non spring loaded bottom insulator I haven't tried 2 coils I prefer to load just enough on top of the buffer to vape for a day I also greatly recommend the nibbler xl or some other method of seeing the vapor while learning how to control the herc in any form
Thanks, that is good to note. I like user friendly, as I'm trying to get away from the hassle of LAYG setups, but I think we're all some form of cloud chaser if we're even considering the Herc in the first place ;)

I'll have to look further into the double coil setup, that makes the 71 sound certainly more versatile, if nothing else.
 
ragnorokk,

lonelyhero

the lost soul
Company Rep
Actually the problem with putting the more powerful 71 rod in a 74/74x is the heat generated would be too much and would ruin the springs in the spring loaded bottom insulator and center pin of the 74/74x
 
lonelyhero,
I guess I should also ask what parts are swappable. If I purchase one model, since the internal parts are all available, can I build a Herc that can be fully swapped from sr 71 to sr 74x (not even taking 74 into account in this), or is there a frankenstein possibility? ie, can I use the 74's Ti coils in the sr71?
 
ragnorokk,

Joel W.

Deplorable Basement Dweller
Accessory Maker
would ruin the springs in the spring loaded bottom insulator and center pin
Perfect! so my next question of course is, can i swap out 74 spring pin to the solid 71 pin? I think I can make a spring that can take the heat or just weld my pin solid if needed. lol.
 
Joel W.,

lonelyhero

the lost soul
Company Rep
I guess I should also ask what parts are swappable. If I purchase one model, since the internal parts are all available, can I build a Herc that can be fully swapped from sr 71 to sr 74x (not even taking 74 into account in this), or is there a frankenstein possibility? ie, can I use the 74's Ti coils in the sr71?

the titanium coils work great in both hercs you can swap almost everything around the one exception is the spring loaded bottom insulator can't be broken down and swapped to the non spring loaded design ( I asked ThcScientific that myself and was told it wouldn't work )

Perfect! so my next question of course is, can i swap out 74 spring pin to the solid 71 pin? I think I can make a spring that can take the heat or just weld my pin solid if needed. lol.

If you don't like the idea of the spring loaded pins but want the 74 honestly I'd buy a 71 and a 74x upgrade kit with the newer chambers
 
lonelyhero,
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Joel W.

Deplorable Basement Dweller
Accessory Maker
honestly I'd buy a 71 and a 74x upgrade kit with the newer chambers
Thanks again. I would have done that but I did not see the 71 offered when I bought my 74x. I am going to order the 71 white rod and make it work in the 74x. I like the challenge! :science:
 
Joel W.,

eckstrakt

Member
So far, testing has shown that any combination of all this stuff, works with all the other stuff. EO carts on 8 tops on Persei bodies. V4 tops on 8 the shorty 8 tube with the Core insert. Too much fun after work today.

02vFhCsh.jpg


I really like using my 8 with the 18350 core insert :D

Oh yeah. Had to scoop this guy, what with the Nibbler collection I've been building for the last year and a half...

AKSK1PEh.jpg


My first piece of non functional glass art :)

Wow.....just wow......how does one become a tester?!?!

I just want one of those setups and you have 7!!!

Send any extras my way!!
 

SamuraiSam

Extraction Technician
Was having problems with my 50w setup, was worried I'd wasted some $$ on the stupid thing. Voltage kept dropping during use. It appears my 7.4v KISS cart is actually the offending party, as it's resistance reads all over the place in my mod and also in my voltage/ohm meter -- voltage drop was presumably to keep me from exploding my face.

Reads from 0.1 ohm to 2.1ohm
What kind of device are you trying to use the KISS cart on? It sounds like you are trying to use a resistance-referenced, variable wattage device. Those often don't work well with our grade 2 ti and ceramic heating elements, both of which really like fixed voltage. Grade 2 titanium wire has very unique properties and the resistance can be interesting...

@eckstrakt, I have been using up tech gear for over 3 yrs at this point. Started with an Omicron V2, I bought the first one my smoke shop got in. Maybe longer than 3 years? How long ago did the V2 come out? Been rocking the Persei for at least year and a half. I tracked down and bought 3 v1 persei kits just to get double tops, and have had two of those single tops upgraded as they broke, got in on the 8 as the Mechanical top pre order; I don't pass up pre orders at this point. Got my Bender and Core and a bunch of other stuff with a holiday sale last summerishhhh? May have been 4th of July? I forget.

In any case, long before I started helping with customer service. :)
 
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spoutti

Well-Known Member
Actually the problem with putting the more powerful 71 rod in a 74/74x is the heat generated would be too much and would ruin the springs in the spring loaded bottom insulator and center pin of the 74/74x
@Joel W. I think you cant put a sr71 rod in the spring loaded post because the sr71 rod doesnt have the "gold" plated part under the rod, just around the rod. The sr74 rod is "gold" plated under and around the rod. I think the gold plated part is where the connection is made. Im sure @SamuraiSam has the answer at the tip of his tongue :wave:. Somehow, I was sure you can swap the rods only one way.
 

SamuraiSam

Extraction Technician
Yeah the coating, I'm not sure what it's made of, only @THC SCIENTIFIC knows.... but it's the contact points where electricity can be transmitted to the rod. On the SR-71 it only has contact points on the side of the rod because it fits into the press-fit center post of the -71. The SR-74 and -74x have a spring loaded center pin that needs to make contact with the bottom of the rod, so the -74/x rods have additional contact material embedded there, just like @spoutti said. The 1.5-1.7 ohm rod will also result in significantly more electrons flowing (Same voltage, up to 8.4V with the lower resistance means more ampere draw, more power transmitted needs the solid press fit connection of the -71.) That's why the the newer rods will work on the older stuff, but the older rods won't work on the newer stuff.

Edit: some more details from an older post: http://fuckcombustion.com/threads/t...s-and-concentrates.4873/page-1096#post-743808

"The center post of the SR-71 is a press fit design and makes electrical contact on the side of the rod, with the contact strips on the heating rod. The press fit design causes a few components of the bottom assembly to come apart when you disassemble it, as the heating rod and center post tend to stay together when you pull it apart. The SR-74 is easier to service as it uses a spring-loaded center pin, that makes contact with the bottom of the heating rod, as opposed to the side. The rod stays with the upper chamber and the center post always stays with the bottom assembly when you separate the chambers, making the -74 easier to scoop reclaim out of if you haven't dialed in your cooldown technique.

SR-71 tends to function better when bathed in oil; neglected; etc. There is no spring loaded pin to get gummed up with oil, although when adjusted correctly the SR-74 is also extremely reliable even when dirty.

The SR-74 heating rod has a higher resistance as compared to the SR-71 (at ~1.7Ω). This means that either the usage technique or applied voltage needs to be different between the two.

In addition to new post styles, @THC SCIENTIFIC has changed up the chamber lengths with each iteration. The SR-74x's rod protrusion depth seems to be perfectly optimized for one Ti coil, and really shines in this configuration; while past models like the SR-71 and -74 worked well with more coil length (the rod protruded further into the chamber). Experienced users, and those who tend to use their Hercules personally (instead of sharing w/others who might dump oil) usually don't need to separate the chambers nearly as often as 'newbies' or people using the Herc in a group setting; and often prefer the reliability of the -71. People new to the herc and who share it might prefer the ease of maintenance, disassembly, and assembly that comes with the spring loaded parts of the newer -74 and -74x models. Either group of users will appreciate the performance with one Ti coil on the newest SR-74x chambers."
 
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THC SCIENTIFIC

To Boldly Go Where No One Has Gone Before
Manufacturer
Sr 71 rod is not fordward compatible because of its high current needs if used on the 74(x) it could damage the springs that can be found in the 74 design.

Now the sr74(x) rods can work on the 71 body because they require less current, which makes them backwords compatible.

On a side note.


Sr 71 rods are 1.7 ohms +/- 0.2 ohms
Sr 74 rods are 2.3 ohms +/- 0.2 ohms
Sr. 74x rods are 2.1 ohms +/- 0.2 ohms

Black rods are all 0.9 ohms +/- 0.2ohms
 
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