Shimano ebikes now an option for DIY

[mr.skywalker]

This should be great for more options for DIY community

Hey guys Ive typically been more active on the FB page for this forum but just thought this may be a good place to get the word out about the brackets I designed and have in stock for shimano EP8/EP6/E7000/E8000 based bikes.

Here is a link to my fb page where I conduct my business if you want to order or see what else I am working on(soon to have some other motor platforms with similar designs). Facebook

Basically these adapters give you a 68mm BSA bottom bracket so you can run standard mtb cranks, DIY motor kits or whatever you may come up with. Some people have turned their old bikes into park bikes and others have put in big power DIY motors like cyc x1 pro but in my mock ups toseven and cyc photon are best fit as a replacement and Im working with some others that may be able to establish communication with cyc motor and shimano batteries. I have no info other than they think its possible but it would save some challenge of building new batteries, but I have done that for a few others if you just need help designing it and even 3d print it.

Price for the bracket is $220shipped in US, add $10 for bash guard and I can ship international

Bracket



Yt decoy park bike from a customer


Bike I did my testing on(orbea rise)


Mock up with CYC X1 pro


Mock up with toseven dm02



Let me know if anyone has any questions.

 

[bram.biesiekierski]

THats a cool bracket. If you are making them specifically for the CYC X1 kits, then there are a few things you can do to tailor them better for that kit.

Include provisions in the bracket for the hardware needed to hang the motor. That way you dont need an unsightly strap over the frame.

You dont need to actually use BSA threads in the BB hole. Conversion kits like the X1 just slip into the BSA hole. The hole diameter just needs to be the same diameter as the thread minor diameter.

And lastly, look at adding a few grub screws to each side of the BB so you can lock down on the X1 and stop it moving around.

 

[mr.skywalker]

I did design with cyc and other diy motors in mind but it was not designed around the x1 pro particularly. If anything the x1 pro was one of the lowest on priority for a few reasons.
1. this was more so focused on getting close to same spec as original motor so cyc photon, bbs02, toseven dm02, tsdz2 were more the focus point and you can see those motors roll up nicely in original motor box.
3. If I was focusing on x1 pro or even photon only I would have kept it 83mm bottom bracket width but then there would be no other options without going to 100mm width for other motors and staying smaller(68mm) allows more adjustment for 73mm based motors(I actually have a few videos on my fb business page discussing these topics) to get clearance for different frames and chain alignment
2. The x1 pro is very long and there are many forms the shimano based frames come in so it would be very hard to design something for every frame out there. With that most doing x1 pro builds are usually more creating types and I do have 4 threaded holes so you could hand make a bracket to bolt into x1 strap locations and these holes and have a very solid attachment but again its frame dependent what that would look like.
3. I think about 50% of the ones I have sold are being used just for park bikes so they arent even using the motor aspect so having the threaded BB is mandatory and when it came to cost in bulk it added nothing to have them threaded
4. If its not clear at this point I wanted a single bracket with the most flexibility possible so I may have some mild compromises for one platform but this opens up the possibilities 3 fold and keeps costs down.

I hadnt thought of the set/grub screws for locking it down, that is a very interesting idea but again I think anyone running standard bb wouldnt want to expose their bearing to dirt and grit getting in. That said if someone wanted to do that there is plenty of material to do that.

I have talked with someone about possibly designing short brackets for the x1 pro so it could fit into the original motor compartment and offer it as kit but thats on the back burner for now, I have Bosch gen4, bafang m620, fazua ride 60 and specialized next on the list.

 

[bram.biesiekierski]

I am in the middle of an X1 swap on a M620 frame. For the adapter bracket i designed my own, and had some metal 3d printed. This is the first metal bracket.

I did design with cyc and other diy motors in mind but it was not designed around the x1 pro particularly. If anything the x1 pro was one of the lowest on priority for a few reasons.
1. this was more so focused on getting close to same spec as original motor so cyc photon, bbs02, toseven dm02, tsdz2 were more the focus point and you can see those motors roll up nicely in original motor box.
3. If I was focusing on x1 pro or even photon only I would have kept it 83mm bottom bracket width but then there would be no other options without going to 100mm width for other motors and staying smaller(68mm) allows more adjustment for 73mm based motors(I actually have a few videos on my fb business page discussing these topics) to get clearance for different frames and chain alignment
2. The x1 pro is very long and there are many forms the shimano based frames come in so it would be very hard to design something for every frame out there. With that most doing x1 pro builds are usually more creating types and I do have 4 threaded holes so you could hand make a bracket to bolt into x1 strap locations and these holes and have a very solid attachment but again its frame dependent what that would look like.
3. I think about 50% of the ones I have sold are being used just for park bikes so they arent even using the motor aspect so having the threaded BB is mandatory and when it came to cost in bulk it added nothing to have them threaded
4. If its not clear at this point I wanted a single bracket with the most flexibility possible so I may have some mild compromises for one platform but this opens up the possibilities 3 fold and keeps costs down.

I hadnt thought of the set/grub screws for locking it down, that is a very interesting idea but again I think anyone running standard bb wouldnt want to expose their bearing to dirt and grit getting in. That said if someone wanted to do that there is plenty of material to do that.

I have talked with someone about possibly designing short brackets for the x1 pro so it could fit into the original motor compartment and offer it as kit but thats on the back burner for now, I have Bosch gen4, bafang m620, fazua ride 60 and specialized next on the list.

 

[mr.skywalker]

I am in the middle of an X1 swap on a M620 frame. For the adapter bracket i designed my own, and had some metal 3d printed. This is the first metal bracket.

View attachment 179783

I think I may have seen that CAD file when doing some research. That makes much more sense how youd make that vs machined. Looks amazing and im sure its strong and light weight. I have a model for M620 in the works as well but it will be CNC for simplicity in mass production like the EP8 ones here.