May 28, 20187 yr Sorry Vagos, didn't look back at the 'photo's before I opened my opinion gob:rolleyes: You're right, HS11's won't fit.
May 28, 20187 yr Author So, should i change to DP calipers then? That's the easiest choise i have. Will they make any notisable difference?
May 29, 20187 yr Author I found these ones at 25€/set. Anyone ever used that brand before? Also, a small video of the bike in action is coming up. https://www.aliexpress.com/item/Japan-DIA-COMPE-city-bicycle-brake-Front-dual-pivot-caliper-brake-Bicycle-parts-C-brakes-61/32317336665.html?spm=a2g0s.13010208.99999999.261.4b0f3c003X25Hr
June 4, 20187 yr Author I made a small aesthetic improvement at the pas. The before and after pics...
June 4, 20187 yr So, should i change to DP calipers then? That's the easiest choise i have. Will they make any notisable difference? Yes dual pivots are a vast improvement over old school side pull calipers, especially if you get good pads...but older frames have a much bigger brake drop than modern bikes that dual pivots are generally designed for. There are some ‘long drop’ dual pivots available, you might need to make some careful measurements before purchasing though. Edited June 4, 20187 yr by Richardab
June 5, 20187 yr Author Yes dual pivots are a vast improvement over old school side pull calipers, especially if you get good pads...but older frames have a much bigger brake drop than modern bikes that dual pivots are generally designed for. There are some ‘long drop’ dual pivots available, you might need to make some careful measurements before purchasing though. I found a cheap pair of dia-compe long reach dual pivot calipers and a pair of matching levers ( gold color). I will upgrade...
June 6, 20187 yr Author Charging question... If I want to store my bike for a long time ( one month), how do I charge the battery for storage? The charger doesn't have any settings. Do I charge it until it reaches 37-38 volts and then stop? Do I fully charge and take it for a spin until the voltage drops to the desired level? Even now, if I know i'm not going to ride for a couple of days, I try to have the battery at 36-38volts.
June 6, 20187 yr Storage 38 - 38.5v, 0.5v either way won't do any harm. I leave mine 37.5 - 39v. All new cells I get from Nkon arrived no higher then 3.68v.
June 12, 20187 yr Author Ok, my Thermal Grease Paste arrived and in the next few days i will add the heatsink to the esc. I found out, that you can add heatsink to the motor as well, it's called hubsink. Anyone tried that? I would like to add something like that, because i'm worried about the motor heating up. We have very hot summer days here in Greece. Am i overreacting?
June 13, 20187 yr Author Don't leave you bike parked in the sun, especially if the battery case is black! I always keep it inside and when I use it, I lock it in the shade and where I can see it. When it is in movement I worry though.
June 14, 20187 yr Author I just made two small upgrades. I used a small pvc pipe wrapped in sticker to hide the excess cables and also fitted a heatsink on the esc. I had to cut the enclosure though. Now i'm waiting for the new handlebar, brakes and levers...
July 10, 20187 yr Author More updates... I upgrated my brakes to dual pivot calipers, new brake levers and i also bought a golden handle bar to match the calipers ( i thought it would look really cool), but it came in silver ( how hard was to send the correct color?) I just took it for a quick ride and i saw massive improvement in breaking power!
July 11, 20187 yr Author https://www.youtube.com/watch?v=ltF3fvqwGow Just a small video of the bike and how i build it...sorry for the quality and my accent.
July 12, 20187 yr Author Hi, my motor has these writings on it SY73626OL0517S1. Do you know what they mean? And the p1 setting is 87. Anyone knows if it is the correct one? That's how I bought it.
July 12, 20187 yr Hub motor is from Suzhou Shengyi Motor Co. http://www.syimotor.com/product.html SY = Shengyi, 73626 serial no, OL may be factory code, 0517 production date & S1 maybe the quality checker ? 87 suggests about 5:1 reduction ration and 16 magnets poles = p1 or 4.3 reduction and 20 magnet poles. P1 has a correlation with real time road speed in, so can be checked against any satnav/gps readout. Lowering the mean value adjusts speed read out lower and raising mean value raises speed reading. Edited July 12, 20187 yr by Nealh
July 12, 20187 yr Author Hub motor is from Suzhou Shengyi Motor Co. http://www.syimotor.com/product.html SY = Shengyi, 73626 serial no, OL may be factory code, 0517 production date & S1 maybe the quality checker ? 87 suggests about 5:1 reduction ration and 16 magnets poles = p1 or 4.3 reduction and 20 magnet poles. P1 has a correlation with real time road speed in, so can be checked against any satnav/gps readout. Lowering the mean value adjusts speed read out lower and raising mean value raises speed reading. Thank you. So the p1 doesn't have to do with motor performance, got it. I will check the speed with my phones gps and if it is correct I don't have to change anything?
July 12, 20187 yr Thank you. So the p1 doesn't have to do with motor performance, got it. I will check the speed with my phones gps and if it is correct I don't have to change anything? If speed matches quite well then no changes needed, you can go up or down the scale to see if it affects the pas pickup/motor timing. No harm or damage will be caused by doing so and you will also see the speed read out should be not as accurate. Hub performance may suffer if P1 value is completely out by a wide margin, my Q128c suffered pickup/timing issues with a wrong P setting whilst using PAS, throttle power was unaffected.
August 1, 20187 yr Author Question... Is there a way to trick the motor in order to get a higher top speed? Micah from ebikeschool just uploaded a new video and one of the tips for higher speed, was to change the wheel settings on your display. I run on 28" wheels, if i change it to 26" will that do anything? The speed on the display will be wrong obviously, but what about the real speed?
August 1, 20187 yr You might see a km/h or two more if you aren't bothered about correct speed/odo reading set the wheel size to 24 for more speed.
August 1, 20187 yr Author You might see a km/h or two more if you aren't bothered about correct speed/odo reading set the wheel size to 24 for more speed. So the smaller the wheel setting, the higher real speed i can get? I will check the speed accuracy now and after the "hack" to see if it will work...thanks! Edit. I just took a quick spin and tried a couple of settings ( 24inch, 22, 700c), but didn't notice any difference. My battery is at 37v right now,, i don't know if that is a big deal. Edited August 1, 20187 yr by Vagos
August 3, 20187 yr Some LCD controllers have an absolute top speed. The LCD SW900 is 50kmh, no matter the wheel size the LCD panel limits speed to 50kmh.
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