I converted my 2010 Stumpjumper hardtail 29r and couldn't be happier after changing my tires to Maxxis Hookworms. Smooth and fast, not bad off-road if you don't push it too hard. BBSHD with 42t.
17 ah battery is way over kill not to mention weight, physical size and location …….i have CYC drive 6 ah cube battery allows over 30 mile range on single track trails. Just got home from a 9.5 mile ride ( 70 minutes) used 10% of the battery. Running street assist mode level 2-3 on 5 levels, no use of throttle. CYC has race mode, obviously would be faster and use more power…..to fast to tight, rough single track. Also in for the work out not just going fast.
@@bobs7597 Maybe riding on the moon but not planet earth. I won't even build a mid drive bike with less than 19 amp-hrs. I believe your numbers are 'off'.
I've done one of these bikes you can put the battery right underneath next to the motor on that bottom bar it looks really good. And still have plenty of wheel clearance.
Wow awesome. Nice udder ;) removing good ground clearance. Oh love the weight distribution of the battery more over the front wheel. Its bound to perform amazing on jumps and drops with this setup!
Hi Johnny - I'm just here to stroke the TH-cam algorithm and thank you for convincing me to spend a little more for mid drive - don't receive it until next month - I'm getting old and slow but always loved toys - I hope a trike with the Bafang Ultra gets over the Nerdout Bar :) - wish you well with the business and move
I was smiling all the way through watching this video Johnny 😀. I always wondered what my stumpjumper would look like if I converted it. And now I know 👍🏿. Personally, I would have opted for the 48v 10amp bottle styled batteries. But the 52v battery makes sense for monster range with the BBS02. As always, keep up the vids dude 👊🏿
Johnny thanks for the video I did this to my bike I had the battery on a rack I've got some bottle Bobs from you mounted it and the bike performs way better now it feels like a mountain bike performance changed a lot putting the battery on the top tube thank you again MD
If you put the battery on the bottom of the down tube would the battery have hit the wheel when the shock bottoms out? I've seen you put the battery down there before on a similar geo Santa Cruz..
Love the bike & the build. I'd personally sacrifice range & the nutcracker for an under saddle battery. Aside from my own personal fears about position I love the clamp mounting vs drilling in to a good frame. What's the matter with the larger 42t Lekkie with such a wide ratio cassette? It has a good top speed & looks like a 42:42 or 1 to 1 ratio granny which is, imo, perfect with a mid-drive.
Hey! Very new to your channel- do you have a video out where you focused on hill climbing? I want to build out a bike for commuting, but my neighborhood has very large hills. I don't have a bike yet, so I'm trying to figure out whats best to get off FB marketplace while still keeping a tight budget. Thanks for the videos!
So I have a 2001 Stuntjumper. Looking at a 1000 over a 750 because it’s hilly and very windy where I live. After watching this video, I’m thinking the battery matters a bit more than motor if I want a longer duration ride, an I thinking correctly? Thanks for all your videos.
Totally off. But.... is it possible to transfer the wheel hub from a small ebike, to a bigger wheel. I hope this makes sense. I want to eventually build my own ebike but I currently have a Magnos Ebike and got a motor less bigger bike and am hoping I can transfer the whole system to the bigger bike.
Indeed the wrong choice of motor for this frame. He should have went with a cyc motor instead as it has way more reach forward negating the udder problem.
Has anyone come up with a bracket or something to give the motor extra support? I am concerned when off roading with it. I had it work loose once and I cranked it really tight.
I have a question, my wheel sensor on my spokes hits my rear Derailer when in first but the frame mount doesn’t seem to like to fit my frame anywhere else. I have a hard rock specialized.
The mid drive motor and battery add about 35 pounds to the bike. I converted my old Ellsworth Moment downhill bike with essentially that same kit and it went from 31 lbs to 66 lbs.
I think you made the best of it, but that bike is just a bad candidate for an ebike conversion if you plan on doing any real mountain biking. The motor sits too low and will strike logs or rocks on the trail. The battery placement creates a very high center of gravity and make the bike very cumbersome on the trail. He would have been better off selling the bike and finding a bike that had a triangle that was more conducive to a lower batter placement.
Me personally, I wouldn't build that bike. Only providing my counterpoint. I don't like the battery up high aesthetically or for center of gravity. If insisting on chosing a full suspension frame, it would be time to fire up the die grinder and welder, cut/section the downtube and build a battery box into the frame.. Yes, this adds pretty dramatically to project of building an ebike. There are a few full suspension 29er frames you can mount a 20 amp-hr battery in, but more you can't than can.
I'm not sure about the placement of the motor. The Stumpjumper is a high dollar Mt bike, he should care about the loss of ground clearance. I can't count the number of times I used my front sprocket to roll over a log or something semi-solid.
You mention that if you could get the bike for under $1k, then for another $1k you would have a nice e-bike. Have you ever seen a full suspension Specialized Stump Jumper for under $1k?
I LIKE WHAT U DO BUT THATS A BAD SPOT FOR THE BATTERY - RUINS THE HANDLING OF THE BIKE VERY TOP HEAVY - IT WILL FIT UNDER THE DOWN TUBE - THE FRONT TIRE WILL CLEAR AND CAN BE PROTECTED FROM MOISTURE WITH A BATTERY BAG - MUCH BETTER SETUP -
@@JohnnyNerdOut FYI you can get them in my market around $2000 to 1500 once they hit 5-8 years old There is a really nice one for 1500 but it is a XXL. FYI there is also a 2020 Trek Powerfly FS they are asking $3000 for. So you can also find good deals on Bike Shop mid drives as well.
I converted my 2010 Stumpjumper hardtail 29r and couldn't be happier after changing my tires to Maxxis Hookworms. Smooth and fast, not bad off-road if you don't push it too hard. BBSHD with 42t.
I wouldn't want my battery there, that's a nut buster for sure.
I ran into a car with my battery right there and battery stayed still.
@@ChrisBFerguson well done! :D
17 ah battery is way over kill not to mention weight, physical size and location …….i have CYC drive 6 ah cube battery allows over 30 mile range on single track trails. Just got home from a 9.5 mile ride ( 70 minutes) used 10% of the battery. Running street assist mode level 2-3 on 5 levels, no use of throttle. CYC has race mode, obviously would be faster and use more power…..to fast to tight, rough single track. Also in for the work out not just going fast.
@@bobs7597 Maybe riding on the moon but not planet earth. I won't even build a mid drive bike with less than 19 amp-hrs. I believe your numbers are 'off'.
Looks like a nice little motor, maybe someday I'll sell my dirt bike so I can afford it?
I've done one of these bikes you can put the battery right underneath next to the motor on that bottom bar it looks really good. And still have plenty of wheel clearance.
That's what I did with my Ellsworth Moment. No clearance issues at all.
Wow awesome. Nice udder ;) removing good ground clearance. Oh love the weight distribution of the battery more over the front wheel. Its bound to perform amazing on jumps and drops with this setup!
The motto: Johnny nerdout, all drive, no jive:) Your videos are great!! Thanks
Hi Johnny - I'm just here to stroke the TH-cam algorithm and thank you for convincing me to spend a little more for mid drive - don't receive it until next month - I'm getting old and slow but always loved toys - I hope a trike with the Bafang Ultra gets over the Nerdout Bar :) - wish you well with the business and move
Interesting battery solution. I have a full squish fat bike I’ve been thinking about converting - that might be the ticket.
I was smiling all the way through watching this video Johnny 😀.
I always wondered what my stumpjumper would look like if I converted it. And now I know 👍🏿.
Personally, I would have opted for the 48v 10amp bottle styled batteries. But the 52v battery makes sense for monster range with the BBS02.
As always, keep up the vids dude 👊🏿
Johnny thanks for the video I did this to my bike I had the battery on a rack I've got some bottle Bobs from you mounted it and the bike performs way better now it feels like a mountain bike performance changed a lot putting the battery on the top tube thank you again MD
Does it feel top heavy with the battery mounted on the top tube. Would you feel comfortable jumping it?
If you put the battery on the bottom of the down tube would the battery have hit the wheel when the shock bottoms out? I've seen you put the battery down there before on a similar geo Santa Cruz..
Love the bike & the build. I'd personally sacrifice range & the nutcracker for an under saddle battery. Aside from my own personal fears about position I love the clamp mounting vs drilling in to a good frame.
What's the matter with the larger 42t Lekkie with such a wide ratio cassette? It has a good top speed & looks like a 42:42 or 1 to 1 ratio granny which is, imo, perfect with a mid-drive.
Why did you put the battery on the top tube and not the rear on a rack? Zero stand over
because it's a mountain bike and it's supposed to be ridden through obstacles and the rack is only going to interfere
@@Certyx Yea I get that but could be painful.
@@debbieschwartz3132 yeah, I guess it could be, depends on the trails and what's his freeriding, if he does freeride.
@@Certyx definitely! I had tough time finding a top tube bag small enough so I'd have clearance
will the ISCG 05 mount on the bb interfere?
What is your take on the 72 volte
Hi, is the axle length 68mm?
Ya. It may be 73mm but 68mm work up to 73mm.
@@JohnnyNerdOut❤
Lol hilarious from the get go. Thanks for sharing your skills with us! Gonna build something soon and can't wait to reach out or check more content!
I have a 2022 specialize stumpjumper alloy and it look like i have to cut the frame to install the bbs02. Did you have to cut?
If your bike has the tabs sticking out from the bottom bracket, yes.
@@JohnnyNerdOut Can you clarify what the tabs are and do you have a picture of it
@@locdo1233 I don’t have a pic of them but they would stick out like cartoon ears from the bottom bracket shell
Hey! Very new to your channel- do you have a video out where you focused on hill climbing? I want to build out a bike for commuting, but my neighborhood has very large hills. I don't have a bike yet, so I'm trying to figure out whats best to get off FB marketplace while still keeping a tight budget. Thanks for the videos!
So I have a 2001 Stuntjumper. Looking at a 1000 over a 750 because it’s hilly and very windy where I live. After watching this video, I’m thinking the battery matters a bit more than motor if I want a longer duration ride, an I thinking correctly? Thanks for all your videos.
Totally off. But.... is it possible to transfer the wheel hub from a small ebike, to a bigger wheel. I hope this makes sense. I want to eventually build my own ebike but I currently have a Magnos Ebike and got a motor less bigger bike and am hoping I can transfer the whole system to the bigger bike.
Why was the motor hung down and not forward? Its current position inhibits the bike's ability to navigate freely over obstacles.
Rough guess is: there is a clearance issue with the frame when the suspension is compressed if you mount the motor higher.
Indeed the wrong choice of motor for this frame. He should have went with a cyc motor instead as it has way more reach forward negating the udder problem.
Has anyone come up with a bracket or something to give the motor extra support? I am concerned when off roading with it. I had it work loose once and I cranked it really tight.
What do you think the range is on that battery?
decent
I have a question, my wheel sensor on my spokes hits my rear Derailer when in first but the frame mount doesn’t seem to like to fit my frame anywhere else. I have a hard rock specialized.
I had the same issue. Mount it on the non drive side chain stay.
@@hughjassle5876 lol, I think I thought of that but I don’t recall. I’ll look again, thank you
Don't forget to let me know when you're ready to start Consulting and selling parts
What does this weigh? TY , LOVE what you do
The mid drive motor and battery add about 35 pounds to the bike. I converted my old Ellsworth Moment downhill bike with essentially that same kit and it went from 31 lbs to 66 lbs.
Thank God other people pronounce chipotle that way
Professional enthusiasts 😂
I love chi-pot-all
why put the throttle on the left hand side.and not the right like a motor cycle.
You keep the rear shifter, which typically fits on the right side. Since the front shifter is no longer needed there's room on the left side for it.
I think you made the best of it, but that bike is just a bad candidate for an ebike conversion if you plan on doing any real mountain biking. The motor sits too low and will strike logs or rocks on the trail. The battery placement creates a very high center of gravity and make the bike very cumbersome on the trail. He would have been better off selling the bike and finding a bike that had a triangle that was more conducive to a lower batter placement.
I’d like to talk to you about a custom build. Please reach out to me
Me personally, I wouldn't build that bike. Only providing my counterpoint. I don't like the battery up high aesthetically or for center of gravity. If insisting on chosing a full suspension frame, it would be time to fire up the die grinder and welder, cut/section the downtube and build a battery box into the frame.. Yes, this adds pretty dramatically to project of building an ebike. There are a few full suspension 29er frames you can mount a 20 amp-hr battery in, but more you can't than can.
Battery is good where it is. I had the exact same battery mount when I crashed and it is sturdy. Hose clamps work well.
I'm not sure about the placement of the motor. The Stumpjumper is a high dollar Mt bike, he should care about the loss of ground clearance. I can't count the number of times I used my front sprocket to roll over a log or something semi-solid.
This build is stupid on a new level. Luna Z1 or X2
You mention that if you could get the bike for under $1k, then for another $1k you would have a nice e-bike. Have you ever seen a full suspension Specialized Stump Jumper for under $1k?
Perhaps used?
Definitely not new. Yes used.
@@JohnnyNerdOut was it hot?
crack frame and striped of parts
I guess it depends on year, etc. I just found a mint 05 for $350.
Now you’re a fluffer for flaccid dropper posts?! How much do you charge?
I LIKE WHAT U DO BUT THATS A BAD SPOT FOR THE BATTERY - RUINS THE HANDLING OF THE BIKE VERY TOP HEAVY - IT WILL FIT UNDER THE DOWN TUBE - THE FRONT TIRE WILL CLEAR AND CAN BE PROTECTED FROM MOISTURE WITH A BATTERY BAG - MUCH BETTER SETUP -
Im in Saskatchewan haha
Haha! Grower not shower…
Specialized Stumpjumper under $1000 used, Johnny your smooching some bad crack. More likely it is stolen
It all depends on year, condition, specs and seller motivation my man 😃
@@JohnnyNerdOut "seller motivation" (AKA hoping the cops or owner do not show up first)🤣🤣🤣
@@JohnnyNerdOut FYI you can get them in my market around $2000 to 1500 once they hit 5-8 years old There is a really nice one for 1500 but it is a XXL. FYI there is also a 2020 Trek Powerfly FS they are asking $3000 for. So you can also find good deals on Bike Shop mid drives as well.
I guess it depends on year, condition and what you're willing to settle for, how big of snob you are, etc. Just bought a mint 05 for $350. 🤷
Well Johnny see if you can find one of those for me, Frank hey I hope your voyage and moving went A-OK brother get back to me email Frank's Place 55