I'm 4'9 and 80lb female adult. I have been searching full suspension e mountain bike. But I have hard time finding one. The Trek Powerfly FS 4 is supposed to fit, but when I tried it, the standover was too high for me although the ride was comfortable. I also tried Liv intrigue E+2. Again, the ride was good, but standover is bit high. i.e I had to stand on my toes and I had hard time getting out, which would be even harder doing so on the trail. I wonder if it's possible to convert a kid full suspension mountain bike to e bike? I'm a beginner and want to try single track easy trails as well as ride on gravel bike trails. I don't have a kid bike yet. Just want to gather some ideas and wonder if it's possible. Thanks!
P.S. I currently have https://www.rei.com/product/162207/co-op-cycles-drt-10-bike. The standover barely fits. I prefer to be a little lower. The ride is comfortable, but it's not full suspension. I thought about converting this bike, but I prefer full suspension.
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idk about that kit, sold out looks like. More are coming out but lack refinement. doubt that kit compares to a bafang motors power. as far as battery size, youd have to know the triangle space and then check the dimensions on some shark batteries like those in johhnys shop make sure it fits within that triangle. also wattage is usually the motor size, 500-750w would be plenty for you. the tongsheng while looks like a decent kit has some downsides. check some reviews on youtube. im happy w bafang. battery capacity is calculated simply by multiplying Ah x volts so my batt for example 52v x 20Ah = 1040 Watt/Hours which is a lot of capacity, 30-50 miles worth depending on how you ride.
Thank you for your reply. What do you think of swytch bike conversion kit: https://www.swytchbike.com/?
Also, what's the minimum battery space needed in the triangle area? I'm thinking 250W battery might be sufficient to me. I'm only around 80lb.
Yeah judging by the looks, probably wont have luck fitting a battery in any of those spaces... Youd have to measure the triangle space and make sure a shark battery can fit inside those dimensions... which is why hard tails are often ideal... Ill let u know in my area its very mountainy, rocky, steep. my hardtail performs like a champ in these conditions, and Im not bothered by the bumps in the rear - the seat and susp seatpost help w that - i use a cane creek thudbuster ST (elastomer) but I may be looking at trying to Suntour SP12 (spring suspension) seatpost for a lighter rider who needs more shock absorption on big bumps and rocks. as far as torque sensing, the Tongsheng motors here https://www.johnnynerdout.com/motors-1 are new and do that, tho I dont have any experience w them. Im sure theres plenty of videos reviewing and going over their performance.
To conclude, love my e-hardtail, best choice I could have made. In the future as bikes and motor/battery kits improve, my goal is to convert a full suspension lightweight bike and to keep it as light as possible, under 50 lbs, ideally 40. With a deeper fork this would be more suited for Extreme MTBiking and agility, litheness on rough trails, not so bulky. With motor and battery its a bit hard to do. Many of the premade ebikes with those integrated components give them their sleek and compact appeal... But I dont like being stuck with proprietary design and parts which you cannot swap... So, custom ebikes it is. And theyre only getting better from here.
Thank you for your response. I would like to use the bike on unpaved trails, including single track gentle mountain bike trails, nothing crazy. The reason I want to have e-bike is going uphill. I don't want high speed. Class I speed limit is faster than I need. Looks like 26" would be ideal for me. My current REI bike has 375mm reach and 25.5" standover height. I feel pretty comfortable riding (prefer standover a little lower). I want full suspension as I have back pain sometimes. I hope rear suspension would help me lesson the impact in case of hitting bumps. 500w is sufficient for me. But I need torque sensing, no need throttle. I came cross this site: https://thebikedads.com/26-full-suspension-bikes/. Any of these bikes would be suitable to convert to e-bike? Looks like vertical real suspension leaves more space in triangle area, but I wonder if there is enough space?
Hi welcome. I can try to give you some advice. Yes its definitely possible. Lets figure your use case first... mostly flat terrain, trails and commuting you said? Do you need to climb any hills or mtns? Is it mostly dry hard ground or do you need to go through sand or snow (in which case you may want a fatter tire - if not, a narrow tire is good for agility in mtns and forested hills). Also apart from finding the right size bike frame that fits your body type, be aware of a few things - full suspension is great but, youll often find a hard time finding a good place to mount a battery, because the rear susp takes up the triangle space. This makes hardtails often a better choice for ebike conversion. You can put in a suspension seatpost with a hybrid saddle for a cushy ride. Fatter tires add more cushion. Or try to find that full susp bike ideally w triangle space for a battery. Depending on your use case ill assume mostly flat and trails - you dont need a lot of power, 500w or 750w motor will do fine. For me in a heavily mountain area I need steep climbing power so went with a 1000w BBSHD motor. And yea you dont want your stand over height too high. Mine Im able to swing my leg over the cross tube just fine (its a few inches below my crotch) then scoot up onto the seat. You want your seat height to be just so that your seated with leg fully extended, heel on the pedal. Ideally youll want 9-11 gears in the rear cassette, 7-8 at a minimum to make use of the motors power on higher gears. What else...again first Id start with finding that perfect MTB that fits your body, and is suitable for conversion as well. Ride it for a bit stock to make sure its what you want. Then plan the conversion. Also good to be aware of local regulations, often at least in the USA, over 750w is for off roading, 750w is the limit for trails and stuff, though whos enforcing ebike rules? Idk. Just something to be aware of. If you dont need a ton of speed or hill climbing power then a 500w-750w is plenty. The conversion process is pretty straightforward. You can also see my completed build here, for me a tall skinny guy. https://www.johnnynerdout.com/forum/general-ebike-forum/victory-best-performance-e-mtn-bike-best-decision-ever Had so much fun on it so far. If you need any help feel free to ask me or johhny here, though hes pretty busy. Hope this helps. Good luck!
I saw a bunch of 24" bikes here: https://thebikedads.com/24-full-suspension-bikes/. Is it possible to convert one of them to an e-bike?