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What mtb 26 in. conversion kit should I buy TODAY?
- Thread starter s_c
- Start date
I do like the Bafang hub motors myself, I have a mountain bike still which has a 48V rear hub which I ride once in a while for long rides, think it was the first hub motor I brought, but have tended to stick at the moment with my lightweight TSDZ2 powered mountain bike. Police here in the UK are checking bikes more especially in major towns like London etc and confiscating them due to the snatch and grab robberies on high power e-bikes which have been clocked at up to 45mph thro' London, they use ride stolen 125cc scooters. We are now at the point that is if your e-bike is not a known brand it be will deemed more or less illegal.
Thanks guys. I ended up dumping dollars to get a quality 52V battery with name brand cells. Then I saw it didn't come with a charger and wanted to see if I could get a GaN charger to keep it compact... and can only find them for 48v batteries. I would probably switch to 48v battery just to go that route but the sources with the cells I want are almost the same price so sticking with 52 for that sweet power, plus I already spent way too much time looking
@99t4 AliEx ... I believe I'll get what I ordered but their search and listings make it painful for sure!
@amberwolf yup and yup. So painful these days. Amazon was the early offender, it's been impossible to search for inexpensive stuff on their for a while. They seem to want to get $20-30 per item minimum and make it pretty hard to get stuff for less. I often find it's cheaper to buy things in store. They realized people are there for the convenience now and taking advantage. But now that is becoming adopted by many online marketplaces. Makes me appreciate Target...
@dgc I'm also seeing things that are not deliverable to my address. Didn't seem to be anything to do with the contents but did throw me off for sure. I hope that reamer shows up. RE: roberies and illegal e-bikes - Yikes! Some people trying to ruin the fun for everyone...
@E-HP Nice, EBikeBuilder seems to be a pioneer for G0900 mods (on video at least). I pretty much checked out all his videos there and excited to see he adapted it to VESC/Flipsky already. That said... he had to take it apart (painfully) to put in a temperature sensor and I won't have time to tackle anything like that for a while
@99t4 AliEx ... I believe I'll get what I ordered but their search and listings make it painful for sure!
@amberwolf yup and yup. So painful these days. Amazon was the early offender, it's been impossible to search for inexpensive stuff on their for a while. They seem to want to get $20-30 per item minimum and make it pretty hard to get stuff for less. I often find it's cheaper to buy things in store. They realized people are there for the convenience now and taking advantage. But now that is becoming adopted by many online marketplaces. Makes me appreciate Target...
@dgc I'm also seeing things that are not deliverable to my address. Didn't seem to be anything to do with the contents but did throw me off for sure. I hope that reamer shows up. RE: roberies and illegal e-bikes - Yikes! Some people trying to ruin the fun for everyone...
@E-HP Nice, EBikeBuilder seems to be a pioneer for G0900 mods (on video at least). I pretty much checked out all his videos there and excited to see he adapted it to VESC/Flipsky already. That said... he had to take it apart (painfully) to put in a temperature sensor and I won't have time to tackle anything like that for a while
yes thanks, the reamer turned up today, it looks good, will in the next few days remove the crank set and open the BB up to take the TSDZ2 mid-drive, was surprised by the size difference between the thread IDs and the plain central bore.
The problem for us normal e-bike riders here in the UK is: "an ‘e-bike gang’ of four who violently stole jewellery worth £43,000 from an individual on a London street were jailed. All four of the convicted gang members rode electric bikes to and from the scene of the crime" and also " Police in the City of London have seized more illegal e-bikes than any other force - with one capable of 70mph."
The problem for us normal e-bike riders here in the UK is: "an ‘e-bike gang’ of four who violently stole jewellery worth £43,000 from an individual on a London street were jailed. All four of the convicted gang members rode electric bikes to and from the scene of the crime" and also " Police in the City of London have seized more illegal e-bikes than any other force - with one capable of 70mph."
Chalo
📜 Mega legend
I haven't tried a GaN charger so far, but I'll note that none of them seem to have fan cooling. That would remove the single most common failure mode of inexpensive chargers.
@dgc Ahh! Gotta love the media
@99t4 @Chalo I'm seeing 6 x 3 x 1.2 in. for 48v ebike battery chargers for $50-$100, plus they look mostly sealed and we've had to use them outside in light rain at campsites so I like the fanless design. TBH I'm surprised they're not more expensive. I go for GaN DC converters for laptop power supplies and mobile chargers when I can afford it and have had good luck. I'd love to see a GaN BLDC FOC controller too. Definitely some dev kits out there but haven't seen anything ready-to-go for eBikes
Regarding whether the charger is matched to the battery... I mean... it's a 48v ebike battery charger. The reputable company I'm buying the battery from only sells one option for charger and it's the same chinese thing all over Amazon and china direct sites so I have no reason to trust this any less
That said, still haven't found a 48v battery I like with quality cells/reasonable price so may be stuck with the big charger
@99t4 @Chalo I'm seeing 6 x 3 x 1.2 in. for 48v ebike battery chargers for $50-$100, plus they look mostly sealed and we've had to use them outside in light rain at campsites so I like the fanless design. TBH I'm surprised they're not more expensive. I go for GaN DC converters for laptop power supplies and mobile chargers when I can afford it and have had good luck. I'd love to see a GaN BLDC FOC controller too. Definitely some dev kits out there but haven't seen anything ready-to-go for eBikes
Regarding whether the charger is matched to the battery... I mean... it's a 48v ebike battery charger. The reputable company I'm buying the battery from only sells one option for charger and it's the same chinese thing all over Amazon and china direct sites so I have no reason to trust this any less
That said, still haven't found a 48v battery I like with quality cells/reasonable price so may be stuck with the big charger
Yep, I have a larger charger for my 48v 12ah battery which is fan cooled, it doe's not get hot only warm, but I think the fan is there so the makers can use a lesser quality components, as with all my chargers and batteries combos will not leave them over night charging. My wife has a electric wheel chair, the 24v battery charger for that is nearly the size of a house brick, but it doe's charge the two 24v Li-ion batteries at the same time, but would not tell it's charging the batteries except for the indicator is showing red as it remains effectively cold.
Ended up having a successful deployment
This build was for a trip planned many months ago and just got tied up and didn’t really get to building till the last minute. I hadn’t noticed originally with this kit listing but the rim in the hubmotor wheel assembly was not for rim brakes. I seesawed on using a cheapo disc brake caliper adapter or disassembling the wheel and lacing to a rim suitable for rim brakes. I wanted to use the original wheel rim as it’s a cool lightweight thing (not sure if that’s suitable for a hubmotor…) but also hadn’t laced a rim before and was having trouble getting accurate spoke length measurement. I ended up laying the disassembled rim on top of the wheel assembly and measuring that the old rim nipple shelf was 10mm longer radius than the assembly, and took one spoke out of the wheel assembly to measure that. I measured 180.5mm for the current spoke so set off (2 days before trip) to look for 191mm stainless spokes in the event I decided to brave the rim swap. Closest I could get with free 2 day shipping, and if I was going to do this thing I wanted to do stainless so, limited to stainless here, was 189mm. I ordered them and they came in the day before the trip. I was also getting a new bb and chain and all that same day. So around midnight everything else is installed and the bike is generally operating ok and I decide to go ahead with the rim swap because at this point my alternative is relying on front brake only plus braking on the non-rim-brake-rim (which does have a flat but it’s painted and smelly and there’s a rib, not ideal). Let me tell you tuning a rim is a little more fun when you’ve had some sleep. But 189mm ended up being perfect, the spokes just about bottomed out in the nipple and she straightened up nice and tight.
About halfway through the weekend I started hearing a creak and lo and behold I found a loose spoke. It appeared one nipple stripped. I was able to get a scrap one from a bike rental place and put it on. I didn’t tighten it as much as the other spokes because I figured the spoke thread could be compromised but wanted to get some tension on it. Will investigate in the next few days before doing more riding
So here she is. G0900 on Mongoose ATB, stock kit electronics, 52v p42a battery, needs the wiring cleaned up and many other things. One of the goals was to get battery and controller in backpack but requires extension of the 11 pin motor connected and none of those were available for local shipping. Downside of doing that is there will be a minimum of two connected to plug and unplug, one for motor and one for frame mounted controls (throttle, display). So, thinking of ways I can make that one plug
Thanks for the input from this forum on my journey
View attachment IMG_3860.jpeg
This build was for a trip planned many months ago and just got tied up and didn’t really get to building till the last minute. I hadn’t noticed originally with this kit listing but the rim in the hubmotor wheel assembly was not for rim brakes. I seesawed on using a cheapo disc brake caliper adapter or disassembling the wheel and lacing to a rim suitable for rim brakes. I wanted to use the original wheel rim as it’s a cool lightweight thing (not sure if that’s suitable for a hubmotor…) but also hadn’t laced a rim before and was having trouble getting accurate spoke length measurement. I ended up laying the disassembled rim on top of the wheel assembly and measuring that the old rim nipple shelf was 10mm longer radius than the assembly, and took one spoke out of the wheel assembly to measure that. I measured 180.5mm for the current spoke so set off (2 days before trip) to look for 191mm stainless spokes in the event I decided to brave the rim swap. Closest I could get with free 2 day shipping, and if I was going to do this thing I wanted to do stainless so, limited to stainless here, was 189mm. I ordered them and they came in the day before the trip. I was also getting a new bb and chain and all that same day. So around midnight everything else is installed and the bike is generally operating ok and I decide to go ahead with the rim swap because at this point my alternative is relying on front brake only plus braking on the non-rim-brake-rim (which does have a flat but it’s painted and smelly and there’s a rib, not ideal). Let me tell you tuning a rim is a little more fun when you’ve had some sleep. But 189mm ended up being perfect, the spokes just about bottomed out in the nipple and she straightened up nice and tight.
About halfway through the weekend I started hearing a creak and lo and behold I found a loose spoke. It appeared one nipple stripped. I was able to get a scrap one from a bike rental place and put it on. I didn’t tighten it as much as the other spokes because I figured the spoke thread could be compromised but wanted to get some tension on it. Will investigate in the next few days before doing more riding
So here she is. G0900 on Mongoose ATB, stock kit electronics, 52v p42a battery, needs the wiring cleaned up and many other things. One of the goals was to get battery and controller in backpack but requires extension of the 11 pin motor connected and none of those were available for local shipping. Downside of doing that is there will be a minimum of two connected to plug and unplug, one for motor and one for frame mounted controls (throttle, display). So, thinking of ways I can make that one plug
Thanks for the input from this forum on my journey
View attachment IMG_3860.jpeg
Sorry for hijacking that thread, but ... link to those gorgeous controller clamps ?
docw009
🏍️ Giga poster
Wow, you're a bigger and better man than I, Gunga Din, with half of an ebike kit on your back.
Ride on and have great trip!
Ride on and have great trip!
I should get some audio on my rig so I can cruise to some Croce. Rapid Roy in the houseSimilar threads
