love hearing real-world knowledge of CYC's stuff, and I love randomly seeing my old home in a good yt video

Now I want one. Thanks John Looks like you are having a nice spring in Kamloops.

I like these types of videos. kind of like a cab view for trains but for two wheelers. awesome. thanks.

A great attempt at providing some real performance information, thanks.

Hello from Vic BC , really enjoy your videos.

You can hear the tires rolling sound more than the motor pretty quiet. Nice job. I wouldn’t have mind if you had added the little speed display in the corner.

Oh yes back for another!

This looks like a great setup for many reasons. Quiet, fast, great range and a great value compared to prebuilt. I've got a 2010 Specialized Roubaix that I absolutely love but a 20 mi ride wears me out and I need 2 days to recover. I think a CYC Photon and 52V battery would be the bees knees, and $2K is within reach.

i got my Photon on January to replace a Tongshen TSDZ2, both are 52v, I wanted a little more power. The Photon torque sensor kicks in right away, where as the TSDZ2 would kick in 2 seconds later which I did not like. I had the TSDZ set up to 3 level of speed setting and the Photon was already set at 3 levels, so in comparison level 1 on the Photon is just about the same as level 2 on the TSDZ, so just that alone is a big difference between the two motors. I like the Tongshen but it just feel like it's lacking that get up and go power that the Photon has. I am using a 50t chainring on the Photon with 11-46 9 speed cassette and I can ride up hills just using level 1 with no problem, where as the Tongshen I was using a 42t chaining with the same cassette and using level 2 to ride the hills that I ride. So my feeling is this obviously, the Photon is faster and more powerful, 35mph when your going for it, the TSDZ maybe 30mph if you have a 52t chainring on it, which I did, because you can replace the chain guard and have 2 chainring on it, but you must move the chain manually to do so.

I ride a handcycle, which makes me very aerodynamic. I also run very low-power boost settings. I can easily get over 100 miles out of a 17.5ah 52v battery.

5:08 - Consumption is estimated by checking current voltage and amperage every specified period of time ( to make things easier let's say every 1s.) for example Sample 0: 0V*0A = 0W Sample 1: 48.00V * 10A = 480W Sample 2: 47.99V * 5A = 239.95W At Sample 1 you consumed 0.13 Wh ( why? Because In 1 hour you have 3600 seconds so 480W/3600 ) At Sample 2 you consumed 0.067 Wh Now you just have to constantly add those numbers to get total Wh consumption. If you have total consumption then you can easily calculate average consumption per km (Wh/km) Keep in mind that probing every 1s won't be very accurate so in practice this interval is much smaller. Probably lower than 100ms.

In my opinion, for someone who doesn't really want to pedal a geared or direct drive hub would be a lot cheaper and work just as well for this type of riding. Depends on the motor kit and what power and speed you want. A geared hub is great to pedal without motor power.

I’m interested in the Photon for a mini velo bike I have. I like the small size torque sensing and programmability. Question. I converted another bike to an ebike (you are SO right that conversion kits are so much more cost effective and flexible than bikes thanks the Trek Domane - hence competition) but I find it’s over powered even though it’s just 250 watts. I ride in lowest setting which gives about 50 watts power because anything higher and I’m just spinning my legs and doing no work. SO MY QUESTION: does the Photon make sense for me? Is it too much power? I would set it to give minimal power/max range as I want to actually get a workout in. I ride at about 28-29 kmph. Can you adjust the power output a lot?

When do you expect to have overall Photon review available?

Interesting if possible change my BBsHd to torque sensor theoretically its possible to do with another controller and some changes ,how strong it could be )) with Photon interested if its easy to fix , because i didn't see some replacement parts before do you know where possible get it may be ?

GMAC 10T motor with torque sensor, strong pedal assistance. Speed 30kmh avg in city some hills and traffic lights 12wh/km. Weight of luggage, bike and rider about 125kg

I've got random questions and thoughts since I got my Photon, I'll share them here in no particular order and maybe you can address them in your video: 1) Sounds like you are planning to include this, but I'll say it again, we want to know more about serviceability. CYC has been tight lipped, and they don't have any spare parts for sale. What can/cannot be repaired without sending the unit in? 2) Will it be possible to update the display firmware? I can think of many little improvements that could be addressed in a firmware update: more assistance levels (5 would be perfect), ability to swap between race/street mode on the fly, ability to choose a dark/light theme. Also, "efficiency" is not showing up on the ds103 display, only in the app. 3) There is a large discrepancy between the voltage shown on the display and within the app (56.6v on DS103, 58.2v in the app). What's causing that? Wish there was a way to calibrate that. 4) My Photon makes a strange noise at very low throttle (see KZfaq short on my channel). What's causing that? Sounds like an electrical frequency? kzfaq.info5XRmQssH6sg?feature=share I love my photon! Just some small things that could make it really great! Hope CYC catches up with back orders and can start addressing some problems and offering some better service.

Did you use 4 lead harness with brake sensors. Are the brake (or gear change) sensors even required with pedal assist torque sensing mode. ??

Couldn't you possibly superimpose your speed on the video? It would be nice to see you're speed.

Can you recommend photon for 29" XL Bike with 110kg rider and big battery? I was thinking about BBSHD due to power. City I live in is like 80% hills

how do you get your cyc photon to be so quiet? I can hear the tires over yours, but mine completely masks everything around me lmao

I am inteested in the version they do that is EN15194 compliant - i.e. has firmware that limits the continuous power output to 250w and the speed to 15.5mph, for legal use in the UK. The main problem is that they want this ordered from them direct as it is custom firmware and the thought of support issues and having to ship the motor back to HK, as I can't service it myself, fills me with dread. Plus they don't seem that great at answering emails either.

You cannot calculate the energy drawn from a battery by the voltage drop, instead you need to integrate over the current (A) x time (sec) to get that. The total energy stored in a battery can be calculated from the nominal battery voltage (V) x battery capacity (Ah) but your calculation assumes the end voltage when the battery is empty would be 0V which it will not be. The (unloaded) voltage of a battery drops from fully charged to empty state in a non-linear and battery chemistry dependent way. If you want to estimate the left capacity of a battery from the voltage alone, you need to know the battery chemistry drop off curve and measure the battery voltage unloaded. I think the measurement that the drive computer/motor controller does is based on Amps x seconds calculation which is the accurate way of doing the calculation. Hope this is helpful.

How's the performance compared to the BBS02 ? Power, speed etc..

Similar to what I get (75kg, 27.5+, gravel and offroad hills) with light assist, 5Wh/km, up to around 10Wh/km if I'm being lazy. Mostly below 30kph, and speed makes a huge difference to consumption. For me, 520Wh battery does most of what I need without extra weight. I think CYC might calculate/integrate the power actually used vs the trip distance rather than rely on voltage drop (which also varies under load).

Is that 500W ToSeven just a rebranded TDSZ2?

Hi there its Tom from Southampton. I only just found the USB lead and plugged into the harness lead that goes to display and there's power. I have a feeling it could be the on and of to display as the lead has power going to the display. I have the early display can't remember but sets to 72v. Can you still get hold of the 1st one .the new ones have Bluetooth. Sure it's the display as the last ride was wet and the throttle was cutting in and out . I must get back on discord. I really hope it's the display and on and off button.

I would say I recently bought A CYC motor that took 5 months to get here. been trying to get it to work for a month now But literally getting no help from the company. Pretty much telling me to unplug things and plug them back in which does nothing. I can see the motor running but nothing happens when you hit the throttle just makes a winding noise also showing up Speed sensor Error code. Which they seem to simply ignore Any ideas

You go too fast, man, 😅..... you have the engine rigged 😂😂😂 ❤👍

If you have a smaller battery, like 500Wh, limiting the wattage from 800W-->500W will make a huge difference due to the internal cell resistances and squadratic nature of all the losses involved (power losses come squared, wind resistance comes squared, internal cell resistance rises with power).

Where are you getting 1500wh batteries!? I just bought a 1,092wh battery for $700USD. It is 21ah(52v) so you must be talking up near 30ah! I would like to get a 1500wh battery with name brand cells. The one I just ordered has Samsung 35E cells(14s6p). I have a spot welder(Malectrics) and I have made batteries in the past but I am just not feeling it anymore. I'd rather pay the premium and have someone else make the battery.