Help with moped conversion Please!

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Ikenna.o
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Joined: 12/21/2011
Points: 7

Im looking to convert a Batavus hs50
http://www.mopedarmy.com/img/gallery/Batavus_Restored_014.jpg

I want 45 - 50 mph top speed
Range of 25 - 35 miles

I was looking at the EMC-R kit for around 1100$ but that would only leave me about 400 for batteries and I would like Lithium ion

I was also thinking about a Delta wye x5 hub motor since the moped with the engine will only weigh around 70 lbs

What other kits are offered and can meet my specifications
What are the 101 options for lithium and what will I get out of it for each kit

Has anyone seen or done a dirt jumper bicycle motorcycle conversion?

Thanks any help is welcomed

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LeftieBiker
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Joined: 07/09/2011
Points: 654
Re: Help with moped conversion Please!

Very nice old bike! Even though it has a real frame and suspension and brakes, I'd aim for a top speed no greater than 40-45MPH. That is the smallest drum brake I have ever seen on the front... You might also consider using a frame-mounted motor instead of a hub, with the existing chain drive. Hub motors have much less torque than geared motors. That would leave less room for batteries, but for this type of conversion you'd want lithium batteries anyway, and they are small and lighter than SLA. You might look for batteries from someone breaking up a pack, like the guy posting here now about that.

LeftieBiker
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Joined: 07/09/2011
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Re: Help with moped conversion Please!

Damn, still no "edit" button. Never mind about the guy breaking up a pack and posting here - you don't want NiMH batteries.

Ikenna.o
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Joined: 12/21/2011
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Re: Help with moped conversion Please!

Thanks
So is their a specific kit/setup i could use that will give me a top speed of 45 mph for this bike?

LeftieBiker
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Points: 654
Re: Help with moped conversion Please!

I don't know enough about the kits out there to answer. I was addressing general issues, like whether the moped can safely handle 50MPH speeds. It would be better than a bicycle doing 50, certainly, but I wouldn't want to have to slow it down from 50+ going downhill with those tiny drum brakes.

scouttster
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Joined: 12/19/2011
Points: 14
Re: Help with moped conversion Please!

To get those sorts of speeds on a converted moped your probably going to need upwards of a 3000 Watt motor. Be it brushed earth magnet motor. I was going to suggest maybe looing into see what Ezip / Currie sells and just use the whole motor / wiring harness / controller from a donor scooter ( sometimes its less expensive ) But, I think the highest wattage on the motors they sell is 1000 watts??? They could have something higher now, though.. Google search it..

antiscab
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Joined: 07/07/2007
Points: 1598
Re: Help with moped conversion Please!

scouttster wrote:

I was going to suggest maybe looing into see what Ezip / Currie sells and just use the whole motor / wiring harness / controller from a donor scoote

The scooters they make are little more than push bikes with an electric motor

45mph used to require ~4.5kw on my old Emax

How fast do you really want to go?

You can get a motorcycle class hub motor from enertrac that will take 10kw continuous
you will need batteries and controller to match for that kinda power though

Matt

__________________

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst replacement TC Charger
conversion
Spent so far: $5800 + $7000 + $1720 + $960 + $320 + $720 + $140 + $600
Cost to do it again: $2500 + $5600 + $1720 + $960 + $320 + $720 + $140 + $600
Cost for a Petrol bike:$6000 + + $1440 + $6000 + $800 + $1400 + $3200 servicing
Total spent: $17260
Total to do again: $12560
Total to have used a petrol bike: $18840
Total distance travelled so far: 79'120km

Ikenna.o
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Joined: 12/21/2011
Points: 7
Re: Help with moped conversion Please!

Yea but that wouldnt leave enough for LIPO4 batteries

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