RadRunner hack Part2, Adding a Torque Sensing Bottom Bracket

Рет қаралды 12,543

2 жыл бұрын

In our Part1 video we replaced the stock controller on the Radrunner for the Frankenrunner and CA3
• Interfacing Parts on F...
Part 3 Adding Regen Braking • Rad Factory Ebike Hack...
In this video, we show how the CA3 enables an easy upgrade from a basic cadence control scheme to a torque sensor. In the case of a fatbike like this, the bottom bracket will usually be 80 or 100mm wide rather than 68mm, which requires more specialized torque sensor, but luckily we had a few 100mm Sempu sensors lying around in our shop which which fit the bill.

Пікірлер: 43

@BuildItTuneItEV 2 жыл бұрын

Really great job here guy's. I have recently had a slew of people asking about upgrading the runners. Now I have a proper video to reply to them with!

@ryanmerrill8879 2 жыл бұрын

I love the disclaimer.......coming from one of the originals modders in the community on endless sphere.

@strepto42 2 жыл бұрын

You have way too much fun at work! :) Something occurred to me watching these cycle analyst vids - maybe a future CA model could just be a more compact box with no screen and buttons, and bluetooth + an app to do all the UI/config work and make it look a bit less 1990s. That would also open the door to letting it behave like a real watt meter for the likes of Strava and so on, for those that care. Thanks and keep up the good work. I'm looking forward to my next ebike upgrade using all your bits.

@Funermen Жыл бұрын

What would be perfect is a direct connection to the eggrider display

@strepto42 Жыл бұрын

@@Funermen That does look like the exact sort of thing yes... Grin collab? :D

@bradarmstrong1656 2 жыл бұрын

This is a very educational video. It's another wonderful product from GRIN. Yay!

@topi_jarvinen 2 жыл бұрын

Just swapped my old sempu bb to erider. Super easy install and torque sensing seems much more sensitive compared to sempu.

@jayskateandsuchstuff8446 Жыл бұрын

I’m about to install an erider. Was there a preset? I’m assuming you’re using cycle analyst.

@topi_jarvinen Жыл бұрын

@@jayskateandsuchstuff8446 yep, there is a preset in cycle analyst.

@jayskateandsuchstuff8446 Жыл бұрын

@@topi_jarvinen Thanks!

@allanboyd3799 2 жыл бұрын

I’ve been watching your videos for about 6 mo. Love them I’m 66 and in fair shape, however I live in N Vancouver in a very hilly area. I wouldn’t have to travel more than 50 km round trip. There are two big hills in the trip. What kit would you suggest? I’m a man and 95 kg. Love to hear your reply. Plus I’m not mechanically minded, could you also recommend a shop for installation? And tuneups !

@GrinTechnologies 2 жыл бұрын

Hey Allan, generally for a bigger guy with hills we'd recommend the RH212, GMAC, or eZee systems. But if you are not into doing the installation yourself it's likely a better plan to buy a factory ebike than to try and find a shop to install and support a kit for you. Such places, sadly, do not really exist in a way we could endorse.

@aaronkent76 2 жыл бұрын

Thank you. Those these videos makes me want to buy your product over other companies. Do you guys have an online community of people showing there bicycle builds with your products?

@elias8981 Жыл бұрын

Endless Sphere

@KamranMSHoule 14 күн бұрын

On their website now, they have a gallery of builds using grin parts.

@illla Жыл бұрын

Can you combine PHASERUNNER controller with Bafang M620 motor pedal torque sensor so it will work in torque pedal assist mode?

@GrinTechnologies Жыл бұрын

In principle likely yes (with the V6 phaserunner devices), but in practice it would be one heck of a custom wiring and connector hack job.

@suptahoe4658 Жыл бұрын

where would i buy the parts to attach the chain ring to the torque sensor?

@GrinTechnologies Жыл бұрын

The chainring bolts are sold by bicycles stores, as are chainrings.

@justinshields7501 Жыл бұрын

If I have the bolton upgraded controller and display for my radcity 4. Can I also add this torque sensor to it?

@GrinTechnologies Жыл бұрын

Only if that particular motor controller has a torque sensor input capability and can be reprogrammed. We don't know any details about it but the vendor you who you purchased it from should be able to help.

@paradislarry 2 жыл бұрын

What is the part number of the 100MM bottom bracket you used in this video, do you have any like it for sale ?

@GrinTechnologies 2 жыл бұрын

It's a Sempu sensor. We stopped selling them a couple years ago because of QC issues but still had a few lying around. We'll be carrying a 100mm version of the ERider torque sensors later this year.

@paradislarry 2 жыл бұрын

@@GrinTechnologies I'm interested in getting a properly sized replacement bottom bracket for a 2021 RadRunner 100mm X 164mm total length, without a sensor, do you recommend one ?

@kelvinochai6263 Жыл бұрын

I live in Europe and speed limits and throttle is no joke( not allowed). I intend to build a dirt or enduro frame ebike with a sabvoton heavy duty controller. 52v battery, no throttle and speed limit to 27k/h. Since it's gonna be too heavy to pedal and no throttle, so I intend to use an erider torque sensor to a CA v3 and a sabvoton controller. Do you think I can get a smooth and safe performance even if I limit the speed? I was a little bit concerned because someone on endless sphere complained of a dangerous situation on a corner when momentarily stopped pedalling and a power surge suddenly. But he uses sempu torque though. ??? Please I will appreciate your reply. thanks

@GrinTechnologies Жыл бұрын

Yes for sure, limiting the speed in the controller doesn't change the safety or smoothness. The Sempu sensors were definitely prone to erratic signals and we have seen a few ERiders latch up too in electrically noisy environments, but that can be resolved by grounding the bike frame.

@kelvinochai6263 Жыл бұрын

@@GrinTechnologies thanks 👍

@billa3816 2 жыл бұрын

Can the CA3 operate torque and cadence assist simultaneously?

@GrinTechnologies 2 жыл бұрын

Yes, you can have a torque sensor on the bike and choose to run it in cadence move instead of torque mode just fine. On that case it will display your human watts, but the assist it provides will be based on cadence regardless of crank torque. You can have different mode presets with different control schemes to easily switch between them

@billa3816 2 жыл бұрын

@@GrinTechnologies But can it use both at the same time, so that the motor will speed up by pedaling faster or harder without changing settings?

@aayala1053 2 жыл бұрын

@@billa3816 those are two separate control methods.

@billa3816 2 жыл бұрын

@@aayala1053 I was looking at the Juiced Bikes RipCurrent S and from my understanding it has cadence and torque sensors that are active simultaneously.

@glennr9669 10 ай бұрын

Can this be added to a bbs02 somehow?

@GrinTechnologies 10 ай бұрын

No, since it's a bottom bracket torque sensor. The BBS02 is it's own bottom bracket.

@chloerobotham2650 8 күн бұрын

What controller are you using

@GrinTechnologies 5 күн бұрын

That was a frankenrunner, which was a Phaserunner replacement for a short while, the Phaserunner would be the way to go for higher power applications.

@Funermen Жыл бұрын

When will we be getting part 3?

@GrinTechnologies Жыл бұрын

April! The bike already has a locked clutch and regen, but the video still needs to be put together.

@Funermen Жыл бұрын

@@GrinTechnologies ohhhh that sounds awesome. So will those changes be in part 3 or maybe a 4? Or just a side note?

@vaxt Жыл бұрын

Still waiting on part 3.... Pllllllllzzzz!

@GrinTechnologies Жыл бұрын

It's coming verrry soon! The bike's been hauling around with a locked clutch and regen for a couple months now.

@Jarrod_D Жыл бұрын

I do not under stand the ghost peddling. I found that it was all the peddling that makes the bike inefficient and ruining my adventures. It takes no groceries to power my bicycle with a motor . You don't even need to be healthy.