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  1. H

    Running the XTR Di2 system on 6 V

    Hello Amberwolf (interesting name): I'm in the process of ordering a new trike. I don't have the equipment at the moment. I've asked Shimano but I don't expect an intelligent answer. I expect they don't like the lower orders modifying their equipment. The battery for the XTR Di2 is small, like...
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    Running the XTR Di2 system on 6 V

    Hello : The XTR Di2 front and rear derailleurs are powered by a 7,4 volt battery. The Heinzmann battery has a 6v tap for front and rear lights. My question is whether the Di2 system will run properly on 6 v.
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    Looking for Go Swissdrive agent in the US

    Hello : I'm looking for a bicycle store or anyone else who imports Go Swissdrive kits to the US. These are the hub drives made in Switzerland. Regards : Hubert Wagner
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    Powerful Hub Motor with Front Derailleur Only

    Hello Amberwolf and Chalo : I'm persuaded by Chalo's argument. It's pointless choosing an expensive gearbox instead of a rear derailleur when the trike will require a chain tensioner. I'm looking now at the Heinzmann Direct Drive which means I can have a torque sensor. The voltage is 36 rather...
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    Powerful Hub Motor with Front Derailleur Only

    Hello Chalo : Thank you for your ideas. I had three chainrings and a wide range derailleur on my HPV FS20. The latter was close to the ground and of course it picked up a lot of dirt. And I wanted to avoid maintenance and adjustments. You make as convincing argument in your last two...
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    Powerful Hub Motor with Front Derailleur Only

    Hello List : My earlier remarks aside, I've come to the conclusion a geared rear hub motor and the Pinion 12 sp gearbox might be the best option. A geared motor with a single sprocket seems to be the most appropriate. My aims are still to use the motor to assist my own efforts and to allow me...
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    SRAM IGH vs Derailleur

    Hello Ferret : Thanks for your response. But why not use IGH for mountain bikes as well? I would have thought the very last item one would wish to have on a bike that goes through the bush is a rear derailleur. (I don't do that myself). Just pushing my road bike 60 m through long grass to the...
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    SRAM IGH vs Derailleur

    Hello : I understand SRAM has stopped making IGH and has launched 1X drive trains, a new product which appears to be merely another rear derailleur. A second chain ring may be an option. Going in this direction seems bizarre to me. I've wanted to get rid of my derailleur for years. Am I...
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    Powerful Hub Motor with Front Derailleur Only

    Hello List : Amberwold said, "Since the TDCM motor is a DD, it should also be capable of much higher than rated peaks of power". I'd not realized the TDCM was DD. In what way is the TDCM with gears different from a geared hub drive? Will the TECM have the same resistance to moving when power is...
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    Powerful Hub Motor with Front Derailleur Only

    Hello Tig : I looked at your project. Most impressive. I'll follow up your suggestions re Germany. However, I'm coming to the conclusion the TDCM IGH with a torque sensor in the bottom bracket might suit me. (I don't like the idea of the DD drag when not powered). I note Grin offers...
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    Powerful Hub Motor with Front Derailleur Only

    Hello List : There’s quite a lot to think about in your answers. Thank you all for your input. Here is the data Markz requested. My height and weight : 172 cm (68 in), 80 kg (176 lb). Most of the time I’d be pulling a two wheel trailer with two weeks of groceries. Two further questions : 1...
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    Powerful Hub Motor with Front Derailleur Only

    Hello : I'm not interested in throttle only riding. I'd like to be able to pedal with assist, but well over the silly 25kph limit of many hub motors. (I need the exercise). So, if I'm making 20 kph on the flat, I wish to choose assist to boost that to whatever, with no cutoff. I assume that's...
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    Powerful Hub Motor with Front Derailleur Only

    Hello : I'm encouraged to hear a front derailleur with three chain rings can be used with a 3kw hub drive. May I presume the same the principle applies with a slighly less powerful hub, say 1,5 kW? Could there be a problem with the chain line if one had three chain rings? If this set up works...
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    Powerful Hub Motor with Front Derailleur Only

    Hello : I rode a human powered HPV FS 20 for a few years until it was creamed by a truck. Now I'm looking at the Azub T-Tris 20 which I plan to electrical assist. For the moment I'm ignoring the bottom bracket drives as these seem to require a departure from normal bicycling. (i.e. back pedaling...
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    Bafang BBS02 with torque sensor

    Hello List : Eric's remarks in his review of the Bionx hub at Electricbike describes the riding experience I'm looking for. https://www.electricbike.com/bionx/ "The BionX has the torque sensor integrated into the motor axle. The BionX patented torque sensor is known to be one of the best in...
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    Bafang 750W BBS02 w/ Nuvinci N360 & Gates Belt for Commuter?

    Hello List : I was interested in using the Bafang 750 with the Nuvinci 360 until I talked to the Nuvinci rep in Europe. Apparently the hub is designed for 60 Nm of torque. The Bafang puts out 120 Nm. Even the 350 watt motor is rated at 80 Nm. I expect using the hub in this way would void the...
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