Stinky with 80-100 and Nuvinci. NEXT BIKE Teaser pic inside!

Thanks! Glad you like the uniqueness. A few things about the build... I'm extremely pleased with the Nuvinci setup this thing is a dream come true. I come from working on ICE CVT sit down street scooters. The PC tunable shift maps really beat the piss out of variator weights and compression springs. Hopefully the hub hold up well because it really makes for a good riding experience.

I'm not thrilled with the 12t delta 88kv wind. I may be rewinding it again this week. I want something like 7turn delta with 2X 18 gauge in parallel. unfortunately my e bike budget is spent. I still have 14gauge so I'll probably do a 7 turn 14 gauge motor to begin with. The 80-100 just doesn't seem itself at 2100 rpm :-/

I'm still playing with timing. Burtie's board is working good though :-D

Here are a couple more pics. I got carried away putting it together and didn't take a lot of pics. There is a lot more to come. The handle bar mounted cell medics, side fairings, headlight, tail light, turn signals are toward the top of the list. Lastly, feel free to laugh at my cardboard air duct! I'll be making a better version eventually.

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20120226180433498.jpg
 
Wow very impressive,I hadto watch the video twice when I realised the camera was on a Goped ,respect must go to your mad friend :!: :lol:
 
bahhh cant ride it till the end of the week. The rear axle nut came loose and I lost the nut and the torque washer. Nuvinci is sending me a new set but I'm out of commission till then. Lesson learned, next time use more than purple loctite.
 
Assuming it is the opposite side to the servo, you could
make a clamping, bolt on torque plate, and forget about the nut ??

http://endless-sphere.com/forums/download/file.php?id=70971


Nice to hear the optic sensors are running well on your bike :)

I enjoyed the video, Great work!
 
Very nice indeed!
I just realized you got no pedals or footpegs on there.
You're just placing your feet on the front top end of the two long side cases eh?

E-racer said:
Thanks!
There is a lot more to come. The handle bar mounted cell medics, side fairings, headlight, tail light, turn signals are toward the top of the list. Lastly, feel free to laugh at my cardboard air duct! I'll be making a better version eventually.

20120226180519240.jpg

20120226180433498.jpg
Click to expand...
 
Wheazel said:
I would seriously consider an astro or similar high efficiency motor for such a nice installation. Great work.
Click to expand...

I wish. They are just to pricy. Thanks though! I'll be cleaning it up more. In fact I finalized all the high power wires and made the balance harness (connects to cell medics) tonight. Everything is cleaning up nicely. The last harness I have to make is the lighting harness.

Sacman said:
Very nice indeed!
I just realized you got no pedals or foot pegs on there.
You're just placing your feet on the front top end of the two long side cases eh?
Click to expand...
Just for now. There will be plugs in the open tubes on the side that pick up a set of BMX flat pedals for the foot rests.

bzhwindtalker said:
The sound is awesome! WHO could say that electrics sounds lame after that?
Click to expand...
Thanks! I like the way electric sounds better than ICE n e way. Smooth and quiet. That is saying a lot because my Porsche sings to me :mrgreen: This bike will actually be changing its tune a bit due to the faster wind I'm going to do.

Burtie said:
Assuming it is the opposite side to the servo, you could
make a clamping, bolt on torque plate, and forget about the nut ??

http://endless-sphere.com/forums/download/file.php?id=70971


Nice to hear the optic sensors are running well on your bike :)

I enjoyed the video, Great work!
Click to expand...

Yea I considered cranking something out to get it back on the road. Its rainy this week any way so decided to just work on finishing the rest of the wiring. I should have the new torque washer by Friday. All next week I've got spring break so I'll have a ton of time to get this thing progressed further. Thanks for the board and the compliments!
 
Ridden about 50 miles so far. Solid reliability up to this point.
Progress:
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Wow, so nice man!

Your wire job is IMPRESSIVE! :shock:

Not to mention the rest of it! 8)

How did you get the lipo's to fit. Didn't you show they were too wide?

And how is your 88kv motor only spinning at 2100rpm? 23.8V?!?

Super,
Jay :)
 
GITech said:
Wow, so nice man!

Your wire job is IMPRESSIVE! :shock:

Not to mention the rest of it! 8)

How did you get the lipo's to fit. Didn't you show they were too wide?

And how is your 88kv motor only spinning at 2100rpm? 23.8V?!?

Super,
Jay :)
Click to expand...


Gracias. I ended up using the belt sander to sand down both sides on each hardcase pack. I am running 12s (48 volt). The CVT holds the motor at one speed. After testing the 88kv (4200 rpm) motor w/ the CVT I found that 2100 rpm seemed to be where the bike is the fastest.

These results align perfectly with the Goped scooter I built using an 80-100. The Goped with a 6 turn delta (8400 rpm) pulls the hardest 3500-6000 rpm. It sounds absolutely awesome at that speed. The 88kv motor w/ CVT never even gets to see that speed :-/ I think the bike will scream with a faster motor.

I do believe that the 88kv motor makes similar power. My bike is much faster than the fixed gear Goped due to CVT gearing. This means the 88kv motor is making adequate power.

There is always going to be a difference in driving a free revving motor with a powerband like BMW motors, well tuned Honda motors, sportbbike motors and so on. Just because a motor makes the same power doesn't mean you get the sound and feel that improves the driving experience. For example low revving torquey V8's get the job done, and most of the time they even sound good doing it. I just don't get the happiness of the pull all the way to hell and back rpm in a e90 M3 or e60 M5 or M6 or GT3.

The 88kv literately sounds like a 5kw drill tightening a screw. While my Goped sounds like warp drive exhaust tuned by the sound engineers at McLaren in collaboration with DreamWorks.
 
This is brilliant work E-Racer. I think you could reduce the visual bulk of the swing arms with a well chosen paint scheme. I'm thinking just paint the original swing arm shape onto the new one, but there's probably an even better way. We need an artist to give some advice on that one.

Well done :)

Simon.
 
sico said:
This is brilliant work E-Racer. I think you could reduce the visual bulk of the swing arms with a well chosen paint scheme. I'm thinking just paint the original swing arm shape onto the new one, but there's probably an even better way. We need an artist to give some advice on that one.

Well done :)

Simon.
Click to expand...

Thanks! I couldn't agree more. I think black alone would help them be a good bit more subtle. My accent color will be probably be an electric green. A thickish green stripe may look really good. I'll also be making the side panels this week so that should really transform the sides. This is my spring break week so I've got a ton of time on my hands :-D
 
Green Machine said:
E-racer, nice work! Why did you decide to "skip" the belt drive? Is it something you might add later?
Click to expand...

Cost reduction to expedite the project. I may add it later but the chain is pretty reliable. Thanks!
 
New Video! this is a 4 mile run I like to make on the bike. There is a good amount of sustained 35-40mph.
[youtube]Q41r6KApGZo[/youtube]
 
Yea, I did a lot of design work before I built it. The point of all that work was to make the build go quickly and smooth. Unfortunately, my motorbike budget is spent so I have no way to collect data until those funds increase a bit. Rough estimation from riding this thing almost 100 miles says that it gets about 10 miles averaging 30 mph with 15ah 12s. Top speed so far has been 45mph on my gps. I think it will be a bit better once I get the faster wind done.
 
Just got the newly wound motor in. I did a 6turn delta 3p 18 gauge wind. The thing is downright dangerously fast now. EV Grin tonight for sure! Currently does 53 on gps. I calibrated my crappy cycle computer thing and it seems to read quite accurate now. I know its got 60mph in it. I've got 110miles on it so far.
 
Forgive me if I missed these details in the thread somewhere, but:

How much does it weigh? and, what's the powerloss through the CVT? and, where are the vids? :p
 
dozentrio said:
Forgive me if I missed these details in the thread somewhere, but:

How much does it weigh? and, what's the powerloss through the CVT? and, where are the vids? :p
Click to expand...

You missed the vids......

E-racer said:
Quick video make sure to watch the end.
http://www.youtube.com/watch?v=hz_9R3DZ4vQ
Click to expand...

E-racer said:
New Video! this is a 4 mile run I like to make on the bike. There is a good amount of sustained 35-40mph.
http://www.youtube.com/watch?v=Q41r6KApGZo
Click to expand...
 
It weights 77lbs. We actually put it on the scales tonight. I believe the CVT is about 70% efficient at the bottom and top of the range and they approach 90+% as you approach 1:1. I am a huge fan of the NV I hope I don't ever break it. I have two vehicles with 80-100's and Kelly 48201 controllers. There is no doubt the CVT drastically increases the performance. One great feature; I changed my motor form 12turn to 6turn essentially doubling the motor speed and I corrected for it in CVT software in about 30 seconds. I will post a new video with the 6 turn motor soon! The bike turned 180miles old today. I've let about 30 people ride it. I'd say its holding up well.
 
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