Heads up that Grin's offices and operation will be closed this coming Thursday and Friday as all our staff are on a company planning retreat to chart out the year ahead. All emails, phone calls, and shipments will resume on Monday Oct 7th. Thanks for your patience! 

PS

And if things have been seeming quiet on the Grin front lately, that is never the actual case, things are Always Busy. On our return you will see much more content related  This and This and This and This. 

Sadly a big batch of Phaserunner boards was assembled with a substituted part earlier this year, making them vulnerable to mosfet failure when used at 72V and in some cases even 52V. Unfortunately reworking the boards to fix this mistake was extremely difficult leading to a slow drip-feed supply over the summer.

Fortunately the taps have since been turned on and we now have V6 Phaserunners in great supply again, and with that comes some other pieces of good controller news!

Super Clearance Phaserunner V6

We had a large quantity of Phaserunners already fully potted which couldn't be reworked. From all our testing these still function perfectly fine with 36V batteries, and we're offering at a nearly 75% discount either by themselves or as an option with a kit. It's a great deal for those who want a high-end controller and don't plan to use more than a 36V battery.  

Phaserunner Baserunner V6 Updated User Manuals

We've also completed a much longer revision of the V6 Phaserunner user manual that covers in good detail the use of superharness systems and direct PAS / Torque sensor hookup.  This should close the documentation gap that exists with our superharness and 3rd party display kits and help those doing more advanced integrations.

Heatsinks Too

And at last, we've just received our first batch of a custom tooled heatsink extrusion sized perfectly to the Phaserunner motor controllers for those wanting to improve the natural cooling and increase the power at thermal rollback.  These are available now in our controller accessories page. 

Thanks to everyone who joined in last week for the release of the Freegen technology video and the follow up live Q&A session with Justin, Alon, and Michael. The response and interest levels have been amazing, and we really look forward the next development phases.

For those who want to see this concept in action, make your way over to Eurobike in Frankfurt this weekend and check out Charge's Booth, E18 in Hall 8. There are two fully running demo bikes that you can ride and test for yourself how strong and natural the braking feels, along with some bench models to help illustrate what is going on.

The judges for the eurobike innovation award clearly did not understand or appreciate what they had on their hands, so come see for youself what they missed!

And we're loaded and off to Portland this weekend for our first time attending the Pacific Trike Fest celebration of all things recumbent trike. If you live in that part of Cascadia and want to field test a dual motor drive Catrike or generally talk shop with Justin at his booth, come and pay visit!

It's on Saturday from 9am to 4pm at the Portland Community College, Sylvania. 

Well thanks everyone, with over 16 video submissions we had a great representation of builds for our final best project video awards category. In the end, we felt that Martin from Normandy with his "Super 73 Upgrade" pulled all the elements together to just nudge out in front.

As a video it gives a compelling back story of Martin's experience with his first ebike taking him from high school to now studying electrical engineering in univeristy. It seamlessly flows into the challenges and solutions of fitting a motor into a bike with a different dropout standard, and demonstrates just how much new life you can bring into an old factory ebike. The entire production itself is top notch and a joy to watch. So congratulations Martin, $1000 of Grin buckeroos are now on your store account for whatever future endeavors suit your fancy!

We look forward to seeing more build content on your channel, you've clearly got a knack for this.

And 2nd Place

OK, so we were only planning a single prize but some of the others were so good that we needed to do more than a token thank you.  It was a very close 2nd place for Oliver in Australia with his dual motor Cyclopes build.  This fully custom fabricated sheet metal frame frontloading cargobike is an inspiring piece of art in itself, but one with demonstrated great utility for his rural lifestyle. 

And Many More

Finally, there are a number that didn't necessarily have the same video production chops as Martin and Ollie but that still featured great content and builds. It's a bit random but we felt that the following 3 submissions all had unique character and are also getting a $100 store credit prize

Grinvestors

So that's it for this campaign, thanks again to all who participated, and a big thanks as well to the Grinvestor who helped sponsor this. He wanted to remain anonymous, but is one of several dozen generous people who have helped finance Grin's growth and R&D by loaning funds to us in exchange for interest payments in the form of store credit.  Collectively our Grinvestor community has contributed more to enabling our success than all the traditional banking and loan finance partners combined, and they all deserve a shoutout!

The responsibility of finding our final week winners for the Grin it to Win it context fell to Justin, who had a lengthy shortlist of great builds to choose from. 

Here's a number so far:

Ever since we heard about the Spezi bike show in Germany we knew this was an event we were born to attend. Covid got in the way the last few years but finally now the stars are aligned and thanks to the help of our partner ebike-solutions, we will be there to exhibit! 

This is the show featuring all the "special" bikes that get a short shaft at the normal trade shows. That includes recumbents, tandems, cargo bikes, velomobiles, folders, trailers, quads, and all the other creative wheeled misfits that the mainstream bike culture doesn't quite know what to do with. 

We'll be there with examples of Grin's All-Axle hub motors, air shippable LiGo 10X batteries, and regen capable motor controllers. This open hardware standard provides electrification options and versatility that stand in sharp contrast to the proprietary locked Bosch and Shimano systems that currently dominate Europe. 

The show is in Southern Germany, close to Switzerland and France, and we looks forwards to meeting up with many of our European customers and partners at our booth. So come by and check it out. 

It was exactly 1 year ago that we announced the release of three new torque arm designs. The torque arm V5, V6, and V7 set a new benchmark for both performance and bike compatibity, making the most of a dumb Chinese axle standard. We've now completed the final and most complex installation video for this set, with the "Built for Regen" Torque Arm V7: 

That follows in the footsteps of the V5 and V6 installation videos from a bit earlier. 

These splined insert torque arms have now largely replaced our previous designs, and are also available from our own store but also directly from Amazon for customers in the US (V5,  V6,  and V7).

M16 Axles

By popular request, we've also made a 16mm axle insert option for the V5 and V6 arms. This gives compatibiilty with more powerful motors that use larger M16 axles. A similar option for the clamping V7 Torque Arms is also in the works.  

Eight months ago in the sweet summer heat we unleashed our customer ebike Project Gallery to the world.

In no time we had dozens of submissions pouring in, and prizes were announced every week as Grin's Staff got together to vote on their favorite ebike builds. It was good fun, but we got distracted over winter and let things slip.

Fortunately one of our many generous Grinvestors said he'd like to offer up $5000 of his accumulated store credit as funds for other people to use, providing a great opportunity to kick off a new round of gallery projects for 2024. 

We're starting this Grintastic Gallery Giveaway with a retroactive launch of monthly prize draws, and have just chosen 6 submissions at random for the months of October to March:

So congratulations to each winner above. Each of you now has $250 of store credit added to your ebikes.ca account to use ordering whatever you like. 

For the rest of the this campaign, each week we'll have a different staff member at Grin pick their peronal favorite build in the gallery and make a little video on why they like it and award $250 of credit. We'll also do a random draw of all the submissions from that week and give the draw winner $250 as well. Funds you can apply towards any future orders from Grin.  It doesn't get easier than that. 

As the campaign winds up at the end of May, we'll then select a new prize winner for the best project build video with a final $1000 prize. 

If you've been huddled away all winter building up your dream e-machine, now is the time to tell your project story in photos and videos, upload them to our gallery, and show off your creation to the world. 

Thanks to all who came to visit us at the BC bike show the previous weekend!

The attendance levels were great and our talk on our 20 year experience dealing with lithium battery safety on ebikes was also well received. For those who wanted watch but couldn't attend the show, we've just published a filmed version of this talk on youtube:

Grin's Perspective on Ebike Battery Fires, 20 Years of Experience - Live from the BC Bike Show

Non-UL Battery Blowout: 25% Discount

As explained in the video above, the recent media attention around micromobility battery fires has brought a large scrutiny to the industry, and dramatically changed the insurance landscape so nearly everyone in North America is required to have batteries with UL2271 certification. 

We of course are included in that, and in order to meet the insurances' requirement that 100% of our battery packs are UL certified we have just started a blowout sale on ALL our current battery inventory. Every single non-UL battery model is currently discounted by 25%. This is your chance to get a high quality pack with the best cells at a great price.

Are these batteries less safe?

Absolutely no less safe than a UL certified pack. Given an expected construction standard and BMS functionality, the safety of a battery is almost entirely determined by the brand of cells used in the pack. These batteries are all built using top-of-the-line Panasonic 18650 GA cells or Samsung 50G 21700 cells which have a nearly flawless track record. They have an established robust BMS circuit and sound mechanical construction, but due to peculiarities in UL's BMS requirement they can't quite be UL certified, and our insurers don't like that.

Their stubbornness is our pain and your gain! 

Are they warrantied

Yes, our standard Grin warranty still applies and the batteries are as reliable as they have always been. Our plan was to offer both UL and less expensive non-UL batteries and give customers a choice, but the insurance folks want us to exclusively carry UL certified batteries to renew our term.

When will you have UL listed packs

By later this spring we will be offering exactly the same batteries but with UL2271 certification. Because of the expensive testing fees we will start off with just a couple of the most popular models, and gradually add more varieties as cash flow allows. The UL certified packs will be functionally identical to what we offer now, but will simply cost more, both to pay for the testing fees and the more expensive UL BMS boards.