The latest Bullet R2 is here, and we have additional details, and some of the most frequent questions as well!
The Aillio Bullet R2 is the latest model, increased power rating, and with upgrades and new features like the Flowsense function. There’s a lot of questions about this model, how it differs from the Bullet R1 V2, and the proper set up for best results.
On this page we have pulled together all the specs on the machine, the questions people have about it, and some extra questions we thing you would like to ask if you were interested in the Aillio Bullet R2 at Sweet Maria’s. The price of the Bullet is USD $3999.
We also carry the 220 volt version, the Aillio Bullet R2 Pro model.
Here we have adapted our current R2 Pro page with information that also pertains to, and accurately describes the R2 110v version. We will add more specific information on the R2 soon!
What makes the R2 models different from the R1 Aillio Bullet?
The new R2 models have the same footprint as the R1 V2 model, and from what we see, use the same chassis components. Looking at them, the main thing you see is the new control panel. The new OLED screen has multiple functions, while the control buttons maintain the same layout as the R1.
Less apparent is the new Quick Clean feature… remove one screw to remove the front control panel and access the IBTS sensor for cleaning. There is greater precision to maintain roast temperature closer to the target versus the R1, and the air flow sensor (AKA FlowSense) compensates on the fly as chaffChaff is paper-like skin that comes off the coffee in the roasting process. Chaff from roasting is part of the innermost skin (the silverskin) of the coffee fruit... ...more builds up in the rear filter during roasts. That mean’s naturals and wet processWet-processing starts by removing the outer skin of the coffee cherry with a machine called a pulper, then fermenting the remaining fruit (with green bean inside) in water... ...more coffee with track closer to each other using the same roast curves.
There are more power stages to play with too, 14 on the Bullet R2 Pro and 10 on the R2, verus 9 levels on the R1. And the Pro comes with the new Pro cooling tray with the agitator arm to move the coffee while cooling. And the R1 is rated at 1550 watts whereas the R2 is 1700 watts … so more available power overall.
What is the difference between the R2 and the R2 Pro model?
The R2 is available as a 110 volt version and the R2 Pro is a 220 volt only model. The Pro model is 2300 watts versus the R2 Standard 1700 watts. The 220 volt power supply is needed to deliver the oomph for 14 levels of power versus the R2s 10 levels. The Pro model has 1.2 KG (2.65 lb) capacity versus the R2 1 Kg (2.2 lb) max. The Pro model also includes the Pro cooling tray, made for larger capacity with a rotating cooling arm.
Any other notable features in the R2 models?
There is a new alert to warn when the chaff filter in the rear needs cleaning. It’s a function of the FlowSense system. Aside from that, the increased power in the R2 Pro is noticeable, allowing more dynamic approaches to roasting in terms of accelerating roast times and building curves with more peak power as needed. Also the integrated LED viewing light on the front is white and bright. It makes viewing the coffee through the glass, or in the trier much easier!
What are the power requirements of the Bullet R2?
The Bullet R2 can be run on standard US 110 volt electric. (When we say 110, usually this is rated more toward 120 volts when you measure it at the outlet in a modern home. Actual 110v is a pretty low measurement.)
The other R2 version, the more expensive Bullet R2 Pro is a 220v-only machine.
How much coffee can I roast in the Bullet R2?
The maximum batch size is 1 Kg, or 2.2 pounds.
Note that this is the same capacity as the Bullet R1 V2. The R2 does add another heat level vs the R1 and has slightly more output power.
Also I feel it’s important to say … the Bullet R1 and R2 truly can roast 1 Kgs. Many roasters claim a batch capacity they struggle to actually attain. Not with the R2. I regularly do 2.2 Lb batches in 11 to 12 minutes roast time to City+City+ roast is an ideal roast level that occurs roughly between 425 and 435 degrees Fahrenheit in many coffee roasters with a responsive bean probe where First Crack... ...more
What’s the least I can roast in the Bullet R2?
For roasting samples etc, I use 200 grams. Others have profiles for 100 grams but I feel I get better results with 200 grams (.44 pounds).
Do you have any initial roasting advice for the new R2 model?
We have only tested the Pro model in house here at Sweet Maria’s so we will need to develop profiles around the R2.
We don’t see it as radically different from R1 V2 profiles or roasting approach. It is worth noting that we rarely use higher heat levels. On the R1 V2 most roasts are conducted between level 6 and 8, even for full 2.2 Lb batches. We haven’t found it necessary or even desirable to be maxxing out the power. While it’s great the R2 is 1700 watts and has 10 power stages vs 9 on the R1, I doubt we will be seeing much use for level 10.
Don’t get me wrong, the added power is welcome. It’s never good to have an adjustable coffee roasterA machine for roasting coffee. Or the person operating it! The basic requirements for a coffee roaster are a heating element that gets suitably hot and a mechanism... ...more and be ropasting at max power all the time just to get to 1st crackAn audible popping sound heard during roasting. In coffee, one refers to "first crack" and "second crack," which come from two different classes of chemical reactions.: An audible... ...more in a reasonable amount of time. (Yes, you probably know what roasters I am talking about). It’s like riding a motorcycle in the freeway full throttle, and going 62 mph. Doesn’t feel right. And that has never been the case for us with the Bullet going back even to the R1 V1. R2 models are that much more capable, heaving some power headroom if and when it is needed.
Bullet R2 Photo Gallery
27 Responses
Hello,
I am interested in the roaster, Could you give me information about pricing, delivery time, guaranty, etc Im located in Miami.
Thanks.
Hi – thanks for your interest. All the information is on the product page.
https://www.sweetmarias.com/aillio-bullet-r2-roaster.html
But they are currently out of stock now as we await the nest shipment
Hello there,
Just purchased the Aillio Bullet R2 pro. I’m trying to buy an extension for the roaster but can’t find it anywhere. Do you know where would I be able to find one? Your help would be highly appreciated.
Sure …. but what do you mean by extension? Extension cord for electric supply? We have an article focusing just on the 220v power, types of plugs etc. Here is the link to that.
Hello there,
I’m looking for an extension cord as the outlet is really far from the roaster so I need an extension cord for electricity supply. My outlet support 220v, but it is very far from the roaster.
Thanks
Ok understood Gus. We use this one and see no drop in voltage to the roaster. I would be concerned about any extension cord longer than this though. The is the plug type that ships with the roaster. You will likely need to convert whatever your outlet type is to this tho:
https://www.amazon.com/gp/product/B07FP7V5NR/?th=1
Thank you so much Thompson for your your. The outlet shape matches the shape of the cord, so it will fit, it is just the length. I showed the one you shared to my electrician guy (he is a certified master electrician) and he said it won’t work as it is 250V. The other problem I have now is the distance, it is about 35 feet. I’m going to need to find another solution or more the roaster closer to the outlet. Thanks again for all of your help.
Best,
Gus
You are out of stock if seems and I can’t find any pricing info on the product page. Could you share the details please. This would help me choose a new roaster.
Yes I can see your point. The R2 is $3999. There is a temporary delay in production at Aillio which has delayed our shipment, hence the reason we are out of stock.
We will add price so it can be seen even when out of stock.
Hello!
You can also see all the pricing from the category page here: https://www.sweetmarias.com/roasting/drum-roasters/aillio-bullet.html
We have a comparison graphic (including pricing) from Aillio here: https://library.sweetmarias.com/aillio-bullet-r2-and-bullet-r2-pro-introduced/
Happy roasting!
Hello Jarrett,
Do you know where to buy the three exhaust adapters that connect the roaster to the ducting tubes to get the smoke out?
Thank you in advance,
Gus
Hello!
The files to 3D print the adapters can be found here. Definitely read the page to get some other important technical specs like which print materials are suitable.
There are a variety of people selling what appear to be the same 3D prints on eBay and Etsy. We’re not familiar with anybody in particular, so I would recommend going to either site (or just using Google or your preferred search engine) and searching “Aillio Bullet Exhaust Adapter” to purchase the parts from somebody that seems trustworthy to you. There are a variety of options.
Hope that helps and happy roasting,
Jarrett
Hi,
I already have the Aillio Billet R2 Pro. Have you heard any updates from Aillio about when they will be shipping out the R2 Pro cooling fans?
I tried searching their website but couldn’t find any current updates. Thanks so much!
They had said we would see them ship in March but it appears the target is mid April. I am pressing them for the latest update, and will post it as soon as we have a firm answer on this!
is anyone else having trouble with their R2 dropping green beans through the vent behind the bean chute during roasting? Its kind of non stop for me and I can’t figure out any adjustment to fix it!
Yes this is a known issue that Aillio is working on. If you bought the machine from us you can get the latest info on this by emailing us. [email protected] or email Aillio direct if you got it from them. Things that can possible help- put something under the front legs of the machine to raise them just a little, like 1/4 inch. This has helped some people on a temporary basis. Also making sure the drum is seated correctly – pushing on the front bearing center – it should spring back a little.
For those interested the fix that worked for me is taking the drum out, which involved taking apart the front and back, adding both of the shims which came with the R2 to the back of the drum shaft before the spacer that was already there, turning both the front and back spacers on the drum shaft to face out towards the bearings, and putting that all back together. Then adjust the drum and rear pilot as if you were first unpacking it. This moves the drum out just enough to close the vent gap in the front.
Great… thanks for sharing this. We too had to add extra shims to the R2 Pro when we got the first demo version for the exact same reason.
Hi all,
Does the issue with dropping the green beans through the vent behind the bean chute during roasting pertains to the R2 only, or does it also include the R2 Pro?
Thanks!
We actually had this happening with our initial R2 pro pre production model. We thought the drum might have shifted in shipping. But it seemed to have the proper spring action when pushing against the front bearing from the outside. So we did the shim adjustment and that solved it. We haven’t heard about it much on the pro. We feel like the heavier door handle weight is partially why it’s not as big an issue with the Pro. We also speculated That simply increasing the weight on the 120 V model might be an obvious solution. The problem is we don’t have a unit that shows this issue so we can’t test ourselves. But they’ve been testing intensively in Taiwan so we must trust what they’re telling us.
@Thomspn Owen, thanks for getting back to me. I purchased mine about 4 weeks ago or so. I assume that it would not be a preproduction model the sweet maria’s had on their inventory (crossing fingers).
No, yours is a production model. I was referring to the unit we received for testing. It had the issue and was a pre production demo unit.
I now had the issue happen again on my R2, beans coming through the vent. @Thompson would you suggest I add more spacers / shims to the back of the drum shaft, or add more weight to the door, or something else?? Is there a full “fix” coming from Aillio?
Thanks,
Ilya!
A couple things to try that have worked for some others (reportedly) is to elevate the front legs about 1/8 to 1/4 inch. Yes Aillio is working on a fix. They posted to their forum the info below but this comes from an email FYI:
It’s been 3 weeks trying to get to the bottom of the problems with the doors opening on the R2s. We have had our quality engineer, mechanical engineers, and also the manufacturing engineers working together to try to find the root cause
Things we have looked at include: General tolerances and tolerance stack ups, surface finishes, heat expansion and deformation. Static and dynamic forces on the door.
It has been the strangest mechanical problem to date, and there are still things we don’t understand. However, we do believe that we have a solution.
First of all, the R2 drum is exactly the same as the R1 drum. The door and stainless steel insert on the front plate are also similar in dimensions, even though the R2 insert is held in place with additional screws.
Secondly, the door opening during roasting does not have to be related to the clunking or banging sound that is sometimes heard, these are mostly two separate events.
We have experienced the banging on the R1 in the past, but it would usually go away after the drum is run in, but this time it’s taking a lot longer.
Door Opening can be caused by multiple factors:
Drum not shimmed to the proper distance. (Distance between drum edge and front plate should be around 1mm)
Drum wall inside edge too sharp or with buurs.
Drum vane edge too sharp. (The vane that is closest to the front of the drum)
Drum vane edge too close to the front plate.
Drum not seasoned enough.
Freak cases where the beans stack up just right to push the door open.
Fix: If you have done lots of roasting and it only happened once, you can try to soften the inside drum edge, and the front vane edge. Use a fine file to first round the edge, then use fine (600+) sand paper. You want the edge to be rounded and smooth. If it happens on a more regular basis, we will need to replace the drum.
Note: The drums that have this problem are all within spec, so why it happens on some and not others is still a mystery. The location of this vane and the edge quality does play a part, so we will modify this from now on as it solves the problem. Bean size also plays a part.
Clunking or banging:
Shims on the drum shaft touching the bearing seal and not on the inner ring (inner race). Especially the back shim that is resting on the spring. These shims are stamped, and are not completely flat.
Drum not seasoned enough.
Fix: Turn the shims as shown in the reference below.
To mitigate this from happening again, we will move the front vanes 2mm backwards, and make sure the shims are turned in the right direction.
The problems with the shims could be because the tool to make them is bending them more than previously. This could be because of the material or a worn tool. We will check this as we want the shims to work in both directions. We might also just make them smaller (OD) so that they will not be able to touch the bearing seal.
Ok I think I fixed this. For me the answer was to put both of the original spacers that were on the drum shaft, where one side was sharp, on the back of the shaft, and put the one very thin extra spacer that came with the kit on the front. This creates a very small 1mm gap at the front.
Hope Aillio can sort this out a bit better with the next production run
Hi all,
I saw a post/comment on Aillio instagram page stating that they have the new cooling tray and they have already started shipping them to customer. Does anyone know in what order these cooling tray are shipped? (Who gets to get his/hers first? (Based on what)?
Thanks
Hi Gus – I think they are sending these out in the order the machines sold. We are certainly hoping they come soon.