Insane E-bike build idea

BiggKidd

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The E-bike bug has bitten me hard. Now I'm still playing with my first ever E-bike but that has opened me up to the idea of building my own design from scratch. I will grant you I don't have much bike or E-bike experience with only 500 odd miles on my 2024 E26 Pro. Before that my last time on a bike was in my very early teens 40 years ago. Lots of MC's since then though including the two mentioned below.

Now I find myself wanting to custom build a bike or three. lmao You guys and gals have been so great about helping me with all my stupid questions along the way and I thank you! So I thought I'd post here with my thoughts and ideas and see what other good ideas you all might have.

Now I find myself a somewhat disabled single dad in my mid 50's with grown kids and a couple grandkids and I'm wanting to have some fun again. I have plans for some touring here in a few years once I pay off my homestead. But in the meantime I think I'd like to build a stupid fast totally custom E-bike. Capable both on and off road.

The idea I have currently rattling around my mostly empty head is to build something similar to an oversize OCC Schwinn Stingray. Now this will have to be a budget build over some time as funds are sorely limited. Luckily I do have some experience with building crazy fast stuff and custom building many different things over the years. Most notably a street driven 1979 Z28 that I ran a best ever 8.73 quarter mile in back in the early 90's. This was a back yard / shade tree build much like the bike build would be.

Starting from the rear I'm thinking a 24-26 x 4-5 rear tire. Full suspension is a must IMO! A 5-15kw hub motor or mid drive with a second chain. I want to have at least 7 pedal gears. For a front tire either a 26 if I use a 24 rear tire or maybe a 29 if I use a 26 rear tire. Something along those lines anyway. Not sure at this time but I'm thinking possibly a front hub motor too, maybe geared to keep the size and weight down. While this will look more like a pavement princess it MUST be off road capable! So the front end will probably not have as much rake to it as the OCC does and it will need more ground clearance.

The frame will need to be stretched pretty good as I want the battery down low as possible just above the bottom bracket and the seat height just above the rear tire height and just in front of the tire.

For power I'm thinking LifePO4 cells with a MINIMUM of 50AH and 100AH+ would be better. 48 volts minimum and much more likely 72-96V although the 16 cells of a 48V system would fit better in my minds eye.

Think of a bicycle cross of an 89 Kawasaki 454LTD and a KX250. More along the look of the LTD with the performance of the KX and possibly AWD.

Right now this is nothing more than random thoughts in a bored old mans mind on a rainy day...

I would love to hear y'all's thoughts!
 
The E-bike bug has bitten me hard. Now I'm still playing with my first ever E-bike but that has opened me up to the idea of building my own design from scratch. I will grant you I don't have much bike or E-bike experience with only 500 odd miles on my 2024 E26 Pro. Before that my last time on a bike was in my very early teens 40 years ago. Lots of MC's since then though including the two mentioned below.

Now I find myself wanting to custom build a bike or three. lmao You guys and gals have been so great about helping me with all my stupid questions along the way and I thank you! So I thought I'd post here with my thoughts and ideas and see what other good ideas you all might have.

Now I find myself a somewhat disabled single dad in my mid 50's with grown kids and a couple grandkids and I'm wanting to have some fun again. I have plans for some touring here in a few years once I pay off my homestead. But in the meantime I think I'd like to build a stupid fast totally custom E-bike. Capable both on and off road.

The idea I have currently rattling around my mostly empty head is to build something similar to an oversize OCC Schwinn Stingray. Now this will have to be a budget build over some time as funds are sorely limited. Luckily I do have some experience with building crazy fast stuff and custom building many different things over the years. Most notably a street driven 1979 Z28 that I ran a best ever 8.73 quarter mile in back in the early 90's. This was a back yard / shade tree build much like the bike build would be.

Starting from the rear I'm thinking a 24-26 x 4-5 rear tire. Full suspension is a must IMO! A 5-15kw hub motor or mid drive with a second chain. I want to have at least 7 pedal gears. For a front tire either a 26 if I use a 24 rear tire or maybe a 29 if I use a 26 rear tire. Something along those lines anyway. Not sure at this time but I'm thinking possibly a front hub motor too, maybe geared to keep the size and weight down. While this will look more like a pavement princess it MUST be off road capable! So the front end will probably not have as much rake to it as the OCC does and it will need more ground clearance.

The frame will need to be stretched pretty good as I want the battery down low as possible just above the bottom bracket and the seat height just above the rear tire height and just in front of the tire.

For power I'm thinking LifePO4 cells with a MINIMUM of 50AH and 100AH+ would be better. 48 volts minimum and much more likely 72-96V although the 16 cells of a 48V system would fit better in my minds eye.

Think of a bicycle cross of an 89 Kawasaki 454LTD and a KX250. More along the look of the LTD with the performance of the KX and possibly AWD.

Right now this is nothing more than random thoughts in a bored old mans mind on a rainy day...

I would love to hear y'all's thoughts!
Look into the micargi stretch type bikes. Might be a good base for a custom build.

I have be wanting to build 1 myself, but due to limited funds, this won't happen for a while.
 
Look into the micargi stretch type bikes. Might be a good base for a custom build.

I have be wanting to build 1 myself, but due to limited funds, this won't happen for a while.
I looked those up and that would be a great idea for most people who found themselves wanting to do something similar.
For me first I'll have to just stew on the idea for awhile and see where the old noggin takes me. While I do that I'll finish getting the bike I have the way I want it and enjoy riding.

Meanwhile I'll be looking at motors, controllers, batteries and such.

I'm thinking to make it come out looking the way I'll want it to look and perform how I want it to. I'll need to design and build the frame around the battery or motor and battery combo. LifePO4 cells can't have the pack as "shaped" as the smaller L-ion cells. Which will make things a little bit harder.

My only real fear is I know next to nothing about electronics! I was one of those people who just knew how IC engines and mechanical things worked intuitively from the age of 5 or 6... When it comes to electronics and computers I am so lost I don't even know how or where to learn. If it weren't for all the ready made parts and kits I wouldn't even consider a project like this!

My one saving grace may be having lived off grid the last 17 years DC power and inverters are not strangers to me. How inverters, controllers and such work may as well be magic for all I know.
 
Check out https://www.pedalchopper.com/ , he custom builds adult size Stingrays for motorizing.

That is impressive on the Z28 build. What became of the car?
The regular 1.19s and occasional 1.11s 60ft time got to the point my body couldn't take it anymore and I sold it in 03. It always pulled 1.19s 60ft on motor and 1.11s with NOS. The 1.19s was brutal the 1.11 was indescribable! You could say I had it workin! I won competition engineering's award in 2000 for the best launching car at the Super Chevy show. The truly amazing part was it was not tubbed and was only running 29x10.50-15 Hoosier DOT slicks. I bought the car in 89 or 90 as a wreaked chassis for $25. By 93 after a back yard frame off, well sub frame off resto mod and several different 400-413 SBC combos I hit on the right one and built a new copy every year after that until I sold the car. I raced three tracks every week, Richmond, Colonial Beach and Dinwiddie. The car could run mid 9's on motor and high 8's on NOS but I mostly ran mid 10's so as not to break things as often! It's amazing how many more passes a motor can take at 7,000RPM versus 11,000RPM ! ! ! ! ! I usually only dialed a faster time if my opponent pulled to the line with a faster dial in. Then I'd scratch my dial and dial .001 under their dial in. It was one hell of a mind game and 100% legal in my class!
 
This isn't bad looking and more or less the look I'm going for.

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