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[KevXR]

Looking at the conversion kits on eBay, the price difference between a 250w - 24v and 1000w - 48v is only $60. What are the reasons for buying a lower powered electric hub?
Weight of the motor?
Battery requirements?

Let's say the current battery budge is for 36v battery pack. Will I be sorry buying a 48v system and running it under powered? Can a 1000w system be run on lower power and stretched out like a 500w motor?

I am looking at building two low cost systems that are the opposite.
1. Commuter - can go 15 to 18mph for 20 miles round trip. Some moderate hills. What is the minimum that doesn't make peddaling seem better.

2. Trail bike - can boost up 2 miles of steep hills, then tuned off and not used. Think booster rocket. Lighter is better.

Thank you. Kevin

[ian.mich]

Looking at the conversion kits on eBay, the price difference between a 250w - 24v and 1000w - 48v is only $60. What are the reasons for buying a lower powered electric hub?
Weight of the motor?
Battery requirements?

Let's say the current battery budge is for 36v battery pack. Will I be sorry buying a 48v system and running it under powered? Can a 1000w system be run on lower power and stretched out like a 500w motor?

I am looking at building two low cost systems that are the opposite.
1. Commuter - can go 15 to 18mph for 20 miles round trip. Some moderate hills. What is the minimum that doesn't make peddaling seem better.

2. Trail bike - can boost up 2 miles of steep hills, then tuned off and not used. Think booster rocket. Lighter is better.

Thank you. Kevin

1. 9 hardcase 4s lipos for 44v 15ah, that should be $210 plus parallel board, parallel bullet harness and charger, 100v 45a controller (i can ship that to you for $100 with warranty), mini hub motor http://www.ebay.ca/itm/36v-350w-26-Rear ... 3378ed9969

2. geared motor and a few lipos, and the 100v 45a controller

[wesnewell]

Looking at the conversion kits on eBay, the price difference between a 250w - 24v and 1000w - 48v is only $60. What are the reasons for buying a lower powered electric hub?

IMO, either ignorance, or to stay in compliance with ignorant laws.

Weight of the motor?
Battery requirements?

A motor can be run at any voltage as long as the controller will handle it. Increased battery for more voltage will also produce a longer range if operated at same speed.

Let's say the current battery budge is for 36v battery pack. Will I be sorry buying a 48v system and running it under powered? Can a 1000w system be run on lower power and stretched out like a 500w motor?

A 48V controller won't work with a 36V battery, because the default LVC of a 48V battery is ~42V. OTOH, a 36V controller will normally work with a 48V battery, but would allow you to over discharge the battery as its LVC will be set to 30.5V.

I am looking at building two low cost systems that are the opposite.
1. Commuter - can go 15 to 18mph for 20 miles round trip. Some moderate hills. What is the minimum that doesn't make peddaling seem better.
2. Trail bike - can boost up 2 miles of steep hills, then tuned off and not used. Think booster rocket. Lighter is better.

1. Any kit with ~500wh of battery.
2. Geared hub With 3lb rc lipo pack.