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Pendix - Kit, Fit and Ride
Ok, I survived.
I chose the Pendix 300 to go with my Harry vs Larry Bullit. This is already an issue, more on that later. The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket. The motor goes on the left. It has a torque sensor, 3 modes (Eco, Smart and Idiot). The kit replaces your existing bottom bracket and cranks, so you keep the pedals, but you need to check chain-ring compatibly, it's a standard 4 bolt. You'll need a crank remover, bottom bracket socket, and probably that little spanner for chain ring nuts. Pendix reckon an hour, it took me closer to three, but there was some ****wittery. Loosen pedals. Strip the old BB out and replace. Swap over the chain ring. Mount the rear speed sensor. Mount the drive. It only goes in one orientation and be careful to route the speed and torque sensor wiring through the unit correctly. Connect the speed and torque sensor to the motor at this point. Mount the battery holder so the main motor cable can reach it. Check the battery will fit[1]. Screw the motor adapter plate to the battery holder (2 self tappers). At this point you should be done. Attach pedals. You now need 3 hundred meters or so for calibration so get set up. Switch the battery on (press button at top of battery) and ride. In Smart mode it really adds a lot of power at the off at the expense of battery life, I quickly switched to eco mode and just used the gears as normal. The power feed in is gentle in eco, and gentle at the speed limit cut off, it makes the bullit feel a bit lighter than a normal bike but you really notice it. On the way back against the wind I switch it off, no speedo, but I reckon 12-15kph tops unassisted. Assisted, a bit of effort to get to the speed limiter. The motor can have a strange kickback sometimes if you are under assist and you stop and back pedal, but it's no big deal. Worth it? Given the stupid prices in the market, marginal, but if the 150 kit is for you, I'd say this is worth it for an easy conversion to an existing bike. Looking forward to a big shop or BBQ at the top of a hill to really see if it works, but I can afford it, so I am happy. It does what it says on the tin. [1] First point, the Pendix batteries get taller with capacity. The usual bottle mount won't work on the bullit, I tie wrapped it to the bottom member just forward of the BB. Chec a picture of the Bullitt you'll see where I mmn. AFter market holders or rivnuts will probably solve this if I am unhappy in the future. My chain-ring/guards are also all handed and first fit I flipped them necessitating removing them and refitting. |
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#2
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Pendix - Kit, Fit and Ride
On Sunday, May 10, 2020 at 4:54:55 AM UTC-7, Tosspot wrote:
Ok, I survived. I chose the Pendix 300 to go with my Harry vs Larry Bullit. This is already an issue, more on that later. The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket. The motor goes on the left. It has a torque sensor, 3 modes (Eco, Smart and Idiot). The kit replaces your existing bottom bracket and cranks, so you keep the pedals, but you need to check chain-ring compatibly, it's a standard 4 bolt. You'll need a crank remover, bottom bracket socket, and probably that little spanner for chain ring nuts. Pendix reckon an hour, it took me closer to three, but there was some ****wittery. Loosen pedals. Strip the old BB out and replace. Swap over the chain ring. Mount the rear speed sensor. Mount the drive. It only goes in one orientation and be careful to route the speed and torque sensor wiring through the unit correctly. Connect the speed and torque sensor to the motor at this point. Mount the battery holder so the main motor cable can reach it. Check the battery will fit[1]. Screw the motor adapter plate to the battery holder (2 self tappers). At this point you should be done. Attach pedals. You now need 3 hundred meters or so for calibration so get set up. Switch the battery on (press button at top of battery) and ride. In Smart mode it really adds a lot of power at the off at the expense of battery life, I quickly switched to eco mode and just used the gears as normal. The power feed in is gentle in eco, and gentle at the speed limit cut off, it makes the bullit feel a bit lighter than a normal bike but you really notice it. On the way back against the wind I switch it off, no speedo, but I reckon 12-15kph tops unassisted. Assisted, a bit of effort to get to the speed limiter. The motor can have a strange kickback sometimes if you are under assist and you stop and back pedal, but it's no big deal. Worth it? Given the stupid prices in the market, marginal, but if the 150 kit is for you, I'd say this is worth it for an easy conversion to an existing bike. Looking forward to a big shop or BBQ at the top of a hill to really see if it works, but I can afford it, so I am happy. It does what it says on the tin. [1] First point, the Pendix batteries get taller with capacity. The usual bottle mount won't work on the bullit, I tie wrapped it to the bottom member just forward of the BB. Chec a picture of the Bullitt you'll see where I mmn. AFter market holders or rivnuts will probably solve this if I am unhappy in the future. My chain-ring/guards are also all handed and first fit I flipped them necessitating removing them and refitting. Why did you put a motor on your bike? Are you getting too old to ride? Are you commuting a lot and want a motor because you want to get to work faster? Or are you trying to ride up hills faster than someone that doesn't have a motor? For my part I don't understand why people have e-bikes. One of the guys I was riding with yesterday is 88 years old. He was complaining that our old farts 25 mile ride would leave him exhausted today. But he wouldn't want to change to an e-bike and would consider it cheating. But we are sport riders and not commuters. |
#3
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Pendix - Kit, Fit and Ride
On 5/10/2020 7:54 AM, Tosspot wrote:
Pendix reckon an hour, it took me closer to three, but there was some ****wittery... A minor point: To realistically estimate time to complete a job, I used to take the best reasonable estimate and multiply by three. Eventually I decided that wasn't very scientific. So now I multiply by pi. -- - Frank Krygowski |
#4
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Pendix - Kit, Fit and Ride
On 5/10/2020 10:24 AM, Frank Krygowski wrote:
On 5/10/2020 7:54 AM, Tosspot wrote: Pendix reckon an hour, it took me closer to three, but there was some ****wittery... A minor point: To realistically estimate time to complete a job, I used to take the best reasonable estimate and multiply by three. Eventually I decided that wasn't very scientific. So now I multiply by pi. We must have had similar training. Mine went like this: While I was in college I interned with some electrical engineers. They explained that the former algorithm for time-requirement estimation was the W.A.G. method, but further study showed that W.A.G. times three was better. Me: What's W.A.G.? Them: Wild A$$ Guess. Mark J. |
#5
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Pendix - Kit, Fit and Ride
Mark J. wrote:
On 5/10/2020 10:24 AM, Frank Krygowski wrote: On 5/10/2020 7:54 AM, Tosspot wrote: Pendix reckon an hour, it took me closer to three, but there was some ****wittery... A minor point: To realistically estimate time to complete a job, I used to take the best reasonable estimate and multiply by three. Eventually I decided that wasn't very scientific. So now I multiply by pi. We must have had similar training. Mine went like this: While I was in college I interned with some electrical engineers. They explained that the former algorithm for time-requirement estimation was the W.A.G. method, but further study showed that W.A.G. times three was better. Me: What's W.A.G.? Them: Wild A$$ Guess. Mark J. An old colleague of mine used this process. Think very hard about the project, consider all things that could possibly go wrong and take your best guess. Then double it. If the resulting number doesn’t scare you, double it again. |
#6
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Pendix - Kit, Fit and Ride
On 5/10/2020 4:54 AM, Tosspot wrote:
Ok, I survived. I chose the Pendix 300 to go with my Harry vs Larry Bullit.Â* This is already an issue, more on that later.Â* The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket.Â* The motor goes on the left.Â* It has a torque sensor, 3 modes (Eco, Smart and Idiot). It's the only retrofit kit I've seen that lets you keep your front derailleur and chainrings (if they are the four-arm type). The kit I saw from Korea, that apparently never made it to market, was the only other similar one. For a rather unique bike like the one you installed it on it's fine, but now you can now buy a decent whole mid-drive e-bike for less than US$1500. If they could sell the motor kit for $900-1000 or so they'd sell a lot more of them. BTW, the link for "installation requirements" https://pendix.de/edrive/installation-requirements is not found. |
#7
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Pendix - Kit, Fit and Ride
sms wrote:
On 5/10/2020 4:54 AM, Tosspot wrote: Ok, I survived. I chose the Pendix 300 to go with my Harry vs Larry Bullit.* This is already an issue, more on that later.* The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket.* The motor goes on the left.* It has a torque sensor, 3 modes (Eco, Smart and Idiot). 85% of the buyers only need one of the modes, then? It's the only retrofit kit I've seen that lets you keep your front derailleur and chainrings (if they are the four-arm type). The kit I saw from Korea, that apparently never made it to market, was the only other similar one. BTW, the link for "installation requirements" https://pendix.de/edrive/installation-requirements is not found. One buyer was not too happy with the attitude displayed and service provided by Pendix. (AJ should probably stay away from them.) I did not figure out if the problems were exclusively caused Pendix, though. Anyone who absolutely wants to find out can deepl this and wonder for himself: http://rudi-radlos.de/pendix.html |
#8
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Pendix - Kit, Fit and Ride
Thanks for taking one for the team, Tosspot. -- AJ
On Sunday, May 10, 2020 at 12:54:55 PM UTC+1, Tosspot wrote: Ok, I survived. I chose the Pendix 300 to go with my Harry vs Larry Bullit. This is already an issue, more on that later. The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket. The motor goes on the left. It has a torque sensor, 3 modes (Eco, Smart and Idiot). The kit replaces your existing bottom bracket and cranks, so you keep the pedals, but you need to check chain-ring compatibly, it's a standard 4 bolt. You'll need a crank remover, bottom bracket socket, and probably that little spanner for chain ring nuts. Pendix reckon an hour, it took me closer to three, but there was some ****wittery. Loosen pedals. Strip the old BB out and replace. Swap over the chain ring. Mount the rear speed sensor. Mount the drive. It only goes in one orientation and be careful to route the speed and torque sensor wiring through the unit correctly. Connect the speed and torque sensor to the motor at this point. Mount the battery holder so the main motor cable can reach it. Check the battery will fit[1]. Screw the motor adapter plate to the battery holder (2 self tappers). At this point you should be done. Attach pedals. You now need 3 hundred meters or so for calibration so get set up. Switch the battery on (press button at top of battery) and ride. In Smart mode it really adds a lot of power at the off at the expense of battery life, I quickly switched to eco mode and just used the gears as normal. The power feed in is gentle in eco, and gentle at the speed limit cut off, it makes the bullit feel a bit lighter than a normal bike but you really notice it. On the way back against the wind I switch it off, no speedo, but I reckon 12-15kph tops unassisted. Assisted, a bit of effort to get to the speed limiter. The motor can have a strange kickback sometimes if you are under assist and you stop and back pedal, but it's no big deal. Worth it? Given the stupid prices in the market, marginal, but if the 150 kit is for you, I'd say this is worth it for an easy conversion to an existing bike. Looking forward to a big shop or BBQ at the top of a hill to really see if it works, but I can afford it, so I am happy. It does what it says on the tin. [1] First point, the Pendix batteries get taller with capacity. The usual bottle mount won't work on the bullit, I tie wrapped it to the bottom member just forward of the BB. Chec a picture of the Bullitt you'll see where I mmn. AFter market holders or rivnuts will probably solve this if I am unhappy in the future. My chain-ring/guards are also all handed and first fit I flipped them necessitating removing them and refitting. |
#9
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Pendix - Kit, Fit and Ride
More on the Pendix at http://thorncyclesforum.co.uk/index.....msg102106#new, with further links. -- Andre Jute
On Sunday, May 10, 2020 at 12:54:55 PM UTC+1, Tosspot wrote: Ok, I survived. I chose the Pendix 300 to go with my Harry vs Larry Bullit. This is already an issue, more on that later. The Pendix https://pendix.com/products/product/pendix-edrive300 fits a motor to a standard BSA 68 or 73mm bottom bracket. The motor goes on the left. It has a torque sensor, 3 modes (Eco, Smart and Idiot). The kit replaces your existing bottom bracket and cranks, so you keep the pedals, but you need to check chain-ring compatibly, it's a standard 4 bolt. You'll need a crank remover, bottom bracket socket, and probably that little spanner for chain ring nuts. Pendix reckon an hour, it took me closer to three, but there was some ****wittery. Loosen pedals. Strip the old BB out and replace. Swap over the chain ring. Mount the rear speed sensor. Mount the drive. It only goes in one orientation and be careful to route the speed and torque sensor wiring through the unit correctly. Connect the speed and torque sensor to the motor at this point. Mount the battery holder so the main motor cable can reach it. Check the battery will fit[1]. Screw the motor adapter plate to the battery holder (2 self tappers). At this point you should be done. Attach pedals. You now need 3 hundred meters or so for calibration so get set up. Switch the battery on (press button at top of battery) and ride. In Smart mode it really adds a lot of power at the off at the expense of battery life, I quickly switched to eco mode and just used the gears as normal. The power feed in is gentle in eco, and gentle at the speed limit cut off, it makes the bullit feel a bit lighter than a normal bike but you really notice it. On the way back against the wind I switch it off, no speedo, but I reckon 12-15kph tops unassisted. Assisted, a bit of effort to get to the speed limiter. The motor can have a strange kickback sometimes if you are under assist and you stop and back pedal, but it's no big deal. Worth it? Given the stupid prices in the market, marginal, but if the 150 kit is for you, I'd say this is worth it for an easy conversion to an existing bike. Looking forward to a big shop or BBQ at the top of a hill to really see if it works, but I can afford it, so I am happy. It does what it says on the tin. [1] First point, the Pendix batteries get taller with capacity. The usual bottle mount won't work on the bullit, I tie wrapped it to the bottom member just forward of the BB. Chec a picture of the Bullitt you'll see where I mmn. AFter market holders or rivnuts will probably solve this if I am unhappy in the future. My chain-ring/guards are also all handed and first fit I flipped them necessitating removing them and refitting. |
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