12p3phPMDC
1 kW
- Joined
- Mar 16, 2009
- Messages
- 462
That's a classy looking moped....! It even matches the bug!
Motobecane 40T moped conversion
- Thread starter northernmike
- Start date
northernmike
10 kW
Thanks guys. She's flattered! :wink:
MitchJi
10 MW
Hi Mike,
If you are planning on upgrading to lithium it might be worth figuring out or measuring the efficiency. It might cost less get a given range by upgrading to toothed belts due to money saved on batteries.
northernmike said:
If you are planning on upgrading to lithium it might be worth figuring out or measuring the efficiency. It might cost less get a given range by upgrading to toothed belts due to money saved on batteries.
northernmike
10 kW
Power Twist belt:
I googled the link V-belts a bit and found a green 5 ft at Harbor freight for $25, and a 5 ft red power twist at Graingers for $36.
Since the 4-5% inefficiency of v-belts is attributed at least partially to the force required to bend them, I wonder if the link belts avoid some of that.
I suppose a potential drawback of link v-belts would be that they are not reversible.
Since the 4-5% inefficiency of v-belts is attributed at least partially to the force required to bend them, I wonder if the link belts avoid some of that.
I suppose a potential drawback of link v-belts would be that they are not reversible.
northernmike
10 kW
OK!
Ran it last week with a 5" drive pulley and it was a SLINGSHOT.
80kph no problem.
7AH SLA done in 2mins.
So.
Regeared today with a 4" drive pulley and it's much more civil. Ran it for 20 minutes around the neighbourhood before it started to sag.
What a pleasure to drive.
Pictures soon!
(we need a special smiley, usable on occaisions like this: an EV GRIN icon. danm!)
Ran it last week with a 5" drive pulley and it was a SLINGSHOT.
80kph no problem.
7AH SLA done in 2mins.
So.
Regeared today with a 4" drive pulley and it's much more civil. Ran it for 20 minutes around the neighbourhood before it started to sag.
What a pleasure to drive.
Pictures soon!
(we need a special smiley, usable on occaisions like this: an EV GRIN icon. danm!)
Malcolm
10 kW
I'd love to see a video with sound of your bike in action. I'm curious to hear what sort of noise it makes.
northernmike
10 kW
Malcolm - think chain driven plus a little belt whine. At low speed there is a faint click of the bicycle freewheel on the pedal side.
Moped sprockets are not super-high-tolerance, to be blunt, though the Doppler aluminum pulley improved things I suspect your bike would sound a little better.
415 chain is a nice size for this, though, good dimensions for the power. I have an Iris chain on at the moment but am considering upgrading.
One unintended benefit of using the PowerTwist belt is that the drive pulley is able to spin ever so slightly (even with good tension on the belt) as the inertia of starting from a dead stop is overcome.
Though it doesn't "leap" off the line and smoke the tire as I would have liked, this small cushion could be helpful to the well-being of my powertrain, I think.
The eTek's brushes seem to make a little squealing noise, but nothing that worries me.
Moped sprockets are not super-high-tolerance, to be blunt, though the Doppler aluminum pulley improved things I suspect your bike would sound a little better.
415 chain is a nice size for this, though, good dimensions for the power. I have an Iris chain on at the moment but am considering upgrading.
One unintended benefit of using the PowerTwist belt is that the drive pulley is able to spin ever so slightly (even with good tension on the belt) as the inertia of starting from a dead stop is overcome.
Though it doesn't "leap" off the line and smoke the tire as I would have liked, this small cushion could be helpful to the well-being of my powertrain, I think.
The eTek's brushes seem to make a little squealing noise, but nothing that worries me.
Malcolm
10 kW
Thanks Mike
The reason I asked is I'm interested in how we can make EVs sound attractive. It may seem like a trivial point, but I think some people are put off by the mechanical whine that they make. I know our neighbour's dog hates the noise my bike makes. I was pleased when I watched the videos of the race bikes in the TTXGP. The higher frequency of the chain drive almost sounded like a turbine on some of them. I intend one day to replace the chain drive on my bike with a toothed belt drive, not particularly for efficiency or reliability, but just to see(hear) what it sounds like.
Very neat conversion by the way. I like the retro look
The reason I asked is I'm interested in how we can make EVs sound attractive. It may seem like a trivial point, but I think some people are put off by the mechanical whine that they make. I know our neighbour's dog hates the noise my bike makes. I was pleased when I watched the videos of the race bikes in the TTXGP. The higher frequency of the chain drive almost sounded like a turbine on some of them. I intend one day to replace the chain drive on my bike with a toothed belt drive, not particularly for efficiency or reliability, but just to see(hear) what it sounds like.
Very neat conversion by the way. I like the retro look
northernmike
10 kW
Argh!
It's not "retro"!
It's actually old! This is a 1973 model. "Retro" is a New Beetle, New Mini, Chevy HHR, PT Cruiser, the new Vespas.
I understand why people keep saying "retro"... but I hate it.
It doesn't "look like it's old", I know. Shiny paint, reupholstered seat, new grips, etc.
You can't really say it's been redesigned, though. It's still authentically old!
Anyway.
Regarding making electric vehicles "sound attractive" - silence is the most attractive sound, if you ask me.
All the mechanical noise that used to be drowned out by gas engines is suddenly front and center :wink: ...
And now everyone is listening for that real finesse - a machine that sounds "well oiled".
Belt drives will be the way to go.
It's not "retro"!
It's actually old! This is a 1973 model. "Retro" is a New Beetle, New Mini, Chevy HHR, PT Cruiser, the new Vespas.
I understand why people keep saying "retro"... but I hate it.
It doesn't "look like it's old", I know. Shiny paint, reupholstered seat, new grips, etc.
You can't really say it's been redesigned, though. It's still authentically old!
Anyway.
Regarding making electric vehicles "sound attractive" - silence is the most attractive sound, if you ask me.
All the mechanical noise that used to be drowned out by gas engines is suddenly front and center :wink: ...
And now everyone is listening for that real finesse - a machine that sounds "well oiled".
Belt drives will be the way to go.
Malcolm
10 kW
My sincere apologies. As someone who makes a living using words, I should choose them more carefully. I get lazy in my own time, though.northernmike said:
What I meant, was that your conversion complements the bike, it doesn't look out of place. Is that better? :lol:
northernmike
10 kW
Progress:
Drunkskunk
100 GW
Dude....
That motor is bigger and heavier than the original ICE!
Sweet.
So how long does it take to compleatly burn through the rear tire?
That motor is bigger and heavier than the original ICE!
Sweet.
So how long does it take to compleatly burn through the rear tire?
recumpence
1 GW
Holy Cow. That's just insane.
Totally nutty!
I love it!
Matt
Totally nutty!
I love it!
Matt
northernmike
10 kW
Interest is building in the moped world - I may have orders for a couple mount kits.
Anyone interested in one, or in CNCing a small batch for me?
A waterjet could do it too. It's just 3/8" plate.
Matt?
Also I would love to get these anodized...
Anyone interested in one, or in CNCing a small batch for me?
A waterjet could do it too. It's just 3/8" plate.
Matt?
Also I would love to get these anodized...
Drunkskunk
100 GW
I want one.
I'm scemeing Evil plans
Mars motor on a moped, The power to weight ratio would scare mortals
(insert evil laugh here)
But before I build one, I need one of these moped frames:
All I need is the frame its self. I have the rest of the moped.
I'm scemeing Evil plans
Mars motor on a moped, The power to weight ratio would scare mortals
(insert evil laugh here)
But before I build one, I need one of these moped frames:
All I need is the frame its self. I have the rest of the moped.
northernmike
10 kW
What is that, a Peugeot?
Do you know of the Moped Army? Bet you can pick one up trolling around there. Nice bike! I had two Pug 103s.
I'm setting up to make a dozen Electrobecane mounts - CNC cut and anodized. These will mount an eTek or Mars to the 40 and 50 series Motobecane models. (The 50 is the same as the 40 in most respects but it has rear suspension. My bike is a 40.)
I have orders for three of these mounts already, at a target price of $150.
You may see a few of these fine folks over here soon!
Do you know of the Moped Army? Bet you can pick one up trolling around there. Nice bike! I had two Pug 103s.
I'm setting up to make a dozen Electrobecane mounts - CNC cut and anodized. These will mount an eTek or Mars to the 40 and 50 series Motobecane models. (The 50 is the same as the 40 in most respects but it has rear suspension. My bike is a 40.)
I have orders for three of these mounts already, at a target price of $150.
You may see a few of these fine folks over here soon!
northernmike
10 kW
SLAs seem to be breaking in. Charging faster and outputting more. Or maybe that's just me getting excited. Could be the bike wearing in too. Considering a Headway 48V 10Ah pack from EV Components (Frodus) anyway. Need range!
Loosened the chain a half-turn on the adjustment bolts and lost half the noise. It was too tight.
Then tried my first wheelie.
OH MY GOD I love this bike.
Loosened the chain a half-turn on the adjustment bolts and lost half the noise. It was too tight.
Then tried my first wheelie.
OH MY GOD I love this bike.
spinningmagnets
100 TW
Your E-Moped has a very classy look ! You do first-class work. Does the electric motor run through a 2-speed moped transmission?
A
Anonymous
Guest
Wow I like those bikes. Here's one just waiting for electric motor ...
http://cgi.ebay.com/ebaymotors/moped-MOTOBECANE-PROJECT-OR-PARTS_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7c39Q3a1Q7c72Q3a1205Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem4a98d85379QQitemZ320391893881QQptZOtherQ5fVehicleQ5fParts
http://cgi.ebay.com/ebaymotors/moped-MOTOBECANE-PROJECT-OR-PARTS_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7c39Q3a1Q7c72Q3a1205Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem4a98d85379QQitemZ320391893881QQptZOtherQ5fVehicleQ5fParts
northernmike
10 kW
No transmission on this bike - it is direct drive.
Drunkskunk
100 GW
northernmike said:
Yeah, I'm a member over on The Army, too. That thing is 95% a Pug 103, it even has the same long swing arm, just a diffrent tank and frame. My 2 seat 103 U3 even uses the same seat as that thing. I'm thinking all that open space pluss a hollowed out tank, and under the seat is open, would hold a lot of A123s, Headways, or even Lipo
