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Hi Waspy, Thanks for your interest. Unfortunately, they can't be derestricted as there isn't much of a point to include such feature on a 250W motor. But as Dave said, if you get the LCD display, you can put it on assist level number 5 and reach up to 18mph with a bit of tailwind (depending on...

Hi Nick, You might want to take a look at our kits, seems like a good fit for what you are looking for. We make our own small handmade hub motors, and the whole kit is very light as well. Would add a mere 4-5kg of net weight to your bike once fully converted. We've got 700c available and prices...

Our kits start from £399 including battery if you're doubtful about importing. Might be worth having a look Electric bicycle - Efficient - Durable - Stylish power bikes from cyclotricity

Hi David, Yes, I've been looking through your new Grace bikes, and I have to say, they look superb! I'd love to try one, especially the Grace MX :) By the way, since Wisper has traditionally opted for bigger batteries, what was the thought behind settling for a 36V/8Ah and a 48V/6.3Ah on your...

To build an e-bike with a rear hub motor, you won't have a choice but to use a normal derailleur. Obviously, having Shimano Nexus inner gears with a rear hub motor, for example, is impossible. A CVT hub motor would allow that possibility if you wanted something more advanced than a derailleur...

hehe good find Dave. Since you've posted this link, do I take it that your view is that CVT hub motors have never been built previously? Is anyone aware of an obvious technical obstacle as to why not? Or is it just a matter of no one has bothered with starting the development of it (including...

Thanks guys, I'm surprised they've existed for that long, wasn't aware the CVT mechanism was used in bikes at all. I guess it's because the cost hasn't taken them into the mainstream yet as flecc and mike said. However, what I was really wondering on my post at the top (apologies, I should've...

Has anyone come across this new planetary transmission hub? It seems like a neat concept! Any idea if it has been implemented on an e-bike currently on the market? NuVinci® N360 NuVinci® Experience | Fallbrook Technologies Inc. Rami

Yep, d8veh and flecc are right, it's hard to get the sealant right, we've had issues with it ourselves in the past. That's why we appoint 3rd party subcontractors to make sure the opening is jam packed with silicon among other tests (learnt the hard way!). But the sealant is quite tight now...

Dear Blew it, Thank you very much for putting a detailed review of our bike here, that was kind of you :) Yes, the way we've designed these bikes is to have them match the size of any regular mountain bike. That was the whole idea when we set out to develop an electric bike a couple of...

Batteries are all 9Ah now! Dear forum members, Thank you very much for your comments and feedback on here. I would like to announce that all our bikes have been upgraded from 7Ah to 9Ah at no price increase to yourselves. In fact, this upgrade was a direct result of your feedback in this...

Hi Frank, Thanks for the kind comment! By the way, I was very impressed with your conversions, and have already referred a few customers to you that were looking for high powered 48V kits. Hope you're doing well otherwise :) Regards, Rami

Hi RedPill, We're glad you're enjoying the bike and tackling those hills :) The Revolver model is certainly a lot of bike for the money. If you need any kind of support from our side, we'll be right there for you. By the way, we also make great value conversion kits for your next...

Dear Frank, Thanks for posting our link, much appreciated. We're a relatively new manufacturer who spent over two years developing these products and only launched them in January this year. Since then, they've gained amazing popularity due to the product's design and value for money. If...