I'm looking for a bike hub that has left handed threading on the left side of the hub for a left hand freewheel and threading on the right side for a right hand freewheel.
I currently have a bike converted to electric. However the side mounted motor (it's chain driven) uses the right side freewheel so I can't put the pedal chain on so I can pedal the bike since if I left on the multispeed freewheel and just added the motor to the mix, it would spin my pedals. (that and when I do pedal unpowered, I would be spinning the motor which would make it harder to pedal then it needs to be). So right now it's all electric and no pedal power available.
The adapter that came with the kit that would have allowed two single speed freewheels on the same side was crap and didn't fit the freewheels very well and the second freewheel would just unscrew off the adapter when I tried to apply power. This is either because the threading on the adapter isn't matching well with the freewheels or that there is too much threading on the hub and doesn't allow enough free threading on the first freewheel for the adapter to hold on to and it just pops off when the motor spins. So I tossed that to the bin.
I need to get a new rim hub that has threading on both the right and left sides of the hub. The threading on the left side needs to be in reverse to that of the right side since the motor will be moved to the left side and will drive a 18tooth freewheel (if I can find one. If not I'll settle with the 16tooth ACS south paw freewheel I have managed to find). This setup would then allow me to reinstall the 6 speed freewheel and derailure so that I can pedal the bike when I want to. (especially in times when I have to charge the SLA batteries which can take up to 6-8 hours depending on the depth of discharge).
The thing is, I haven't found anyplace that sells them. I found one site but it's asking $59 for it and that's too high for my budget. I would like to find one in the $25-40 price range if at all possible. It would be even better if I can find one prebuilt to a rim. (I would be willing to pay $100-$120 for one if it already had a rim built around it)
I know some models of Currie eBikes have rims with the "bi-drive" hubs already built on a rim. but they are 26inch wheels. My road bike uses 700c size rims/tires.
Last resort would be to buy a Currie rim and remove the spokes and rim and install the hub to my 700c rim with it's spokes. But that would mean paying more + additional work. In all likely hood I would have to take the hub to a bike shop to have the rim built around it as I have no experience building bike rims and such. So having to disassemble a Currie rim and send the hub off to a bike shop to get a 700c size rim built around it may end up being my best option at this point.
Unless you guys can say for certain it would not be overly difficult to build a rim from scratch? The most trouble I would see my self having is making the rim "true" so that it doesn't wobble. The best I've done in that regard is adjust the tension on a few spokes on my current rim to remove the wobble it developed after a spoke broke off awhile back when my bike chain derailed behind the freewheel. Fortunately it seems the other spokes aren't damaged and the wheel is holding up. (even after 2-3 weeks post ebike conversion with the 30+ pounds of SLA batteries and motor that the rim has to hold up) So now that the wobble is fixed it should last longer. Not that it would matter since I plan to have the whole rim replaced for the new hub I'm looking for.
So any help would be appreciated. To summarize, what I'm looking for is this:
1. A bi-drive hub with or without 700c size rim built around it that will accept 700x38c size tires.
2. 18tooth Left-Hand freewheel. If one does not exist or can't be found, I will get a 16tooth that I found on Amazon.
Also, will the Currie side mounted motor bracket work on non Currie bikes? (aka my road bike). The current motor bracket is not a perfect fit as I have to tilt the whole wheel a bit to the right to keep the freewheel aligned with the motor gear to prevent chain coming off. I've already have a couple chains snap off from bad alignment.
The bracket may work with my motor as the screw spacing appears to be the same. It's mainly how it will mount on the bike frame that I'm concerned about. The bracket is only 9 dollars + shipping so if I buy one and it turns out to not fit, it would not be that much of a loss really.