bakafish wrote:
看起来不太一样，应该...(恕刪)
最近看到新机 Nurri 的视频，似乎对标 acs，三 pid 等等，还加了出水和截流两个小拨杆
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Odyssey Espresso
Argos Weekly Update: September 7, 2021
One week after launch we hit our 200 order minimum required to begin manufacturing. Thank you to all the early adopters who made this happen!
Hardware
Design changes. As the first pre-production machine has been tested over the past few months, a few small design changes are being made to perfect the final design.
1. Wood Panel screws on the sides are being replaced with hidden magnets to clean up the look as seen in the renders.
2. Electronics board updates; including replacing the mechanical heating element relay with a solid state relay for faster response and prolonged life and hardware filters to clean up the thermocouple readings used in the PID control.
3. Lever linkage redesign. The original design required two separate length linkages that would be included and required for swapping from direct to spring lever configurations. This design has been updated to make the swap possible with a single linkage to work with both configurations.
New parts, boards, and panels are expected to arrive by the end of the week or early next week and will allow us to build up the other 4 units for reviews, continued testing, and color/wood configuration display.
With these new parts I will be able to include video on the swap from spring to direct as well as finish dialing in machine controls with the reduced error in sensor readings.
Portafilters and steam wands are the long lead item parts but also the ones that do not require design changes. This order is being placed this week to get the ball rolling on those and some other major components that are not going to change. Once linkages, circuit boards, and covers/ panels are all tested and validated, those orders will be placed likely in 3 weeks.
Software
We're continuing to make great progress with the Odyssey Espresso App. We recently got connected to the Bluetooth transducer and started plotting data as well as to the native Argos sensors. We're currently working on scale integrations with the first two being Decent and Acaia.
Tasks for next week
Test new linkage design
Begin building other 4 pre-production machines
Test new circuit boards
Continue working on Decent/Acaia scale integration with app
Investigate auto start/stop brew plotting based on pressure threshold
Thanks,
Ross Ainsworth
www.odysseyespresso.com
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We appreciate everyone’s support as orders continue to flow in. It is assumed that all items ordered with the Argos will ship in the same box as the machine.
Hardware
Issues with the new circuit board design have been identified and resolved. The board is up and running and we’ve been continuing testing and modifying control logic for the past few weeks.
Unfortunate news: A delay with Portafilters has been identified. The lead time has been pushed to April 2022 delivery due to global material shortages. We are working on finding an alternate supplier to get estimates on an additional batch of parts. Due to the nature of custom cast components, it may not be viable to get these any quicker. Another possible alternative we will be exploring is machined portafilters which will have a completely different look and may or may not be economically feasible.
I will keep everyone posted on the status of these parts but for any orders already placed I would anticipate an April ship date. All machines will be built, inspected, and packaged well before April but will not ship out without the portafilters. Off the shelf portafilters are not likely to fit this machine due to the compact nature of the design.
New wood side panels are made and ready for testing the magnetic attachment in the next few days.
Software
The Decent scale has been integrated with the app and works as expected. The Acaia scales are next.
Control logic is currently being worked on for optimal performance.
Tasks for this week
Document and complete build of second Argos prototype machine.
Thanks,
Ross Ainsworth
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還好影片底下有說明，那個C型環在正式機上可能會取代掉
沖煮頭上也會做倒角讓活塞更容易裝入
我覺得沖煮頭這樣近看還不錯看
不過看完這影片我有個疑問
影片33到35秒時可以看到，他有用力向下壓，才能把那支插銷抽出來
不過也就壓那麼一丁點而已
代表在萃取時，活塞走到接近底部，彈簧接近回彈行程終點，壓力會降到可能只有1到2 bar
如果真的是這樣，這壓力的降幅有點大，接近終點時的壓力值太低
此外，不知道它的沖煮頭內徑多大
假設和一般58mm大拉霸差不多的話
那麼要做到拉一次有相同的萃取量，則活塞的行程長度就會差不多
例如大拉霸的活塞如果走3公分，那麼Argos的彈簧也要走3公分
但Argos的彈簧長度，從影片中來看，大概只有我以前玩的FAEMA Lambro大拉霸的一半
Lambro的彈簧是經過一段較長的預壓，再加上拉霸活塞的行程，才能達到8 bar
Argos要用較短的預壓，加上相同的活塞行程，做到相同的壓力，彈簧的強度就要更強
每壓縮1公分需要的力道要更大
相對的，彈簧每回彈1公分，壓力減少量也會更大
所以Lambro的萃取壓力如果是從8 bar降到6 bar
Argos若選購8 bar彈簧，即使有相當的預壓，萃取壓力也可能是從8 bar降到4 bar
甚至如果如上一段所說，只有預壓一點點，就可能是8 bar降到1-2 bar
其實這正是市面上彈簧小拉霸彈簧力道都偏弱的原因
彈簧做弱一點，壓力的降幅才不會那麼大，加上適當的預壓，萃取壓力區間就能合理
像Elektra MCAL也有人改強力彈簧，結果味道比不上原廠彈簧（接近6 bar）
可能就是因為萃取壓力的高低差太大
不知道官方是否曾在IG或哪個論壇上公布過它的萃取壓力區間或壓力曲線?
印象中有在他IG的限時動態上有看過,但最近都只發esp或爛拉花的照片[orz]
對阿，他最近展示都是爛拉花的影片，但我還是不爭氣訂了一個...XD，我對C環的印象沒有很好，可能改成插銷式的還好一點。原來是壓力降幅的問題，難怪他才有一個6bar彈簧的選項...
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不過這張圖比較奇怪，看起來似乎是隔幾秒才讀取一次壓力值，所以曲線才會像台階一樣
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winson1234 wrote:
作者在論壇釋出的影片(恕刪)
壓力在達到高峰約9.5 bar後有一小段下降的比較快
這裡我猜是拉桿放手放快了，導致活塞加速度下降，讓8 bar彈簧產生了9.5 bar壓力
隨後當然就會立刻回到正常壓力，所以會下降得比較快
30秒那邊有跳一下，我猜可能是活塞密封墊圈的潤滑不夠，活塞下壓中發生跳動
不然就是手有去抬一下拉桿
最後大約在1 bar出頭的位置有個較快速的下滑，這個是活塞行程走到底的現象
所以它的壓力曲線應該就是8 bar一路下滑到1.1-1.2 bar了
我記得IG好像有提過沖煮頭容量是60ml
如果想避免過低的萃取壓力，例如在4 bar時移走杯子，那就只會出30ml
想要有足夠的萃取量就要用少粉量，做fellini move，把預浸做足，再讓沖煮頭把水補滿
要不然就得自己去訂做彈簧了
也有人問他為什麼30秒的地方會跳一下，他是說他有用手去壓一下[笑]
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昨晚HB有人po了一張溫度曲線圖
https://www.home-barista.com/levers/odyssey-espresso-argos-lever-prototype-t65630-600.html#p838191
曲線是使用scace模擬連續沖煮的第2到第5杯
每個shot中間有休息30秒，曲線把這30秒剪掉了
即使是第5杯，溫度降幅10度多，看起來還是滿大
和開頭降幅接近20度相比是縮小了，看來沖煮頭還是要預熱一下比較好
不知道第5個shot開始時沖煮頭溫度是幾度
或許在沖煮頭增加一個加熱模組可能會好一點XD
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