Hey Team,
As expected we have got as far with our build as we can without asking for advice.
Long story short, we got the build to a point on Saturday where we were able to test drive the scooter:
Set up:
GoPed BigFoot Scooter
800W 36V DC Motor (China)
36V speed controller (4 position)/(China)
X2 5S 18650 battery packs (Series)
11T front sprocket
74T rear sprocket
It may just be me, but I felt after the test ride that we were 'missing a trick' and the motor should have more to give. Low to Mid torque and topped out around 8-10mph. I've been looking at several videos online of similar builds. In particular retail scoots (urban scoot 800) and kids 800W quads, mini mx bikes etc... These things look ALLOT faster. Couple of questions to save my sanity;
1. Looking into the gearing i think we are geared way to high, running a 74T on the rear, if you look up spares for the chaos 800W scooter for instance it runs a 55T rear sprocket. I've not had much experience with these chinese DC 800W motors, but are they set up for high torque/low rpm so running a 55T rear sprocket we won't see a major loss in acceleration but the top speed may increase?
2. Power source range across the builds, most retail scoots use X3 12V SLA batteries, what set up is most common on the DIY DC motor scooters?
If nothing changes ill still be happy, as always the quest for more speed continues. If anyone is interested we have X2 goped bigfoot scooters that don't get used with their original petrol motors as the UK prohibits the use pretty much anywhere, we've gone for a 'bolt on' approach to cover them to electric, we've got the brakes and motor mounts sorted. Its a case of tidying everything up now and sorting the chain tension and sorting the gear ratios out...
Thanks in advance!
Tom
As expected we have got as far with our build as we can without asking for advice.
Long story short, we got the build to a point on Saturday where we were able to test drive the scooter:
Set up:
GoPed BigFoot Scooter
800W 36V DC Motor (China)
36V speed controller (4 position)/(China)
X2 5S 18650 battery packs (Series)
11T front sprocket
74T rear sprocket
It may just be me, but I felt after the test ride that we were 'missing a trick' and the motor should have more to give. Low to Mid torque and topped out around 8-10mph. I've been looking at several videos online of similar builds. In particular retail scoots (urban scoot 800) and kids 800W quads, mini mx bikes etc... These things look ALLOT faster. Couple of questions to save my sanity;
1. Looking into the gearing i think we are geared way to high, running a 74T on the rear, if you look up spares for the chaos 800W scooter for instance it runs a 55T rear sprocket. I've not had much experience with these chinese DC 800W motors, but are they set up for high torque/low rpm so running a 55T rear sprocket we won't see a major loss in acceleration but the top speed may increase?
2. Power source range across the builds, most retail scoots use X3 12V SLA batteries, what set up is most common on the DIY DC motor scooters?
If nothing changes ill still be happy, as always the quest for more speed continues. If anyone is interested we have X2 goped bigfoot scooters that don't get used with their original petrol motors as the UK prohibits the use pretty much anywhere, we've gone for a 'bolt on' approach to cover them to electric, we've got the brakes and motor mounts sorted. Its a case of tidying everything up now and sorting the chain tension and sorting the gear ratios out...
Thanks in advance!
Tom