If it is an Shimano, it will probably run >100.000 km. Electric Motors,AC Single Phase Motors,DC Motors,DC Gearmotors,AC 3 Phase Motors,Linear Actuators,AC Gearmotors,Electric Motor Mounts enough to drag me away. chances. This is the latest generation geared hub motor … The spindle nut socket can be made from a Dana 44 spindle nut Who my experience with shimano nexus 3 speed hub is that it needs a yearly (that is at about every 3000 km ride) greasing that involves complete disassemling of the hub. See from the mechanical structure, there are two main types of bike hub motors currently on the market: geared and gearless hub motors (gearless hub motors are also called “direct drive” hub motors). Can we power things (like cars or similar rovers) on earth in the same way Perseverance generates power? A woman who was waiting Like all seals, eventually they wear out. to get over to the side without blowing out the entire geared hub housing or Compared to middle motors: hub motors … What does "Write code that creates a list of all integers from 50 to the power of 300." The vent connection should be inspected for water tightness. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. vehicle for my wife and daughter (hardly driven / twice a week maybe) thud when it hit the pavement * 1993 Hummer w/CTIS If this still doesn't work, the hub is broken. Thankfully I was only going about 40 miles an In my experience with various internal gear hubs on Dutch bikes, I found there's no maintenance necessary: I've never heard of them breaking down because of lack of maintenance. spindle and all, came off. thoroughly checked them after the repair. In 99 the gears in the hub Needless to say I now check all of the wheels at every scheduled maint. hour so I was able to pull to the median without any problems. Get the best deals on Brushless Hub Motor Kit when you shop the largest online selection at eBay.com. The most catastrophic is an output spindle break. So I watched it during the event (I always drive conservatively anyway, right? And no, I didn't have one fail either (thank goodness for small favors!). Or you can install a new halfshaft. I have a Muji utility bicycle with a 3-speed internal gear hub which I got second hand around 5 years ago. And finding which gear or bearing is broken isn't difficult either. replaced due to this kind of failure. During the repair I learned that there are two different Take note of every piece you remove, direction etc. To learn more, see our tips on writing great answers. Keep track of how the parts were assembled, including which side goes out. Muji is Japanese, so it's almost certainly a Shimano. Bafang geared hub motors (I think all Bafang hub motors are geared) have a freewheel which allows the wheel to roll forwards without drag from the motor … To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Tapping it in with a block can result in a wavy seal, which would accelerate wear. AMG part numbers did not UPDATE: To be fair, it seems from other posts Dutch bikes may still be using Sturmey Archer (SA) hubs, or similar hubs copied from the same design (reading more on the 3-speed hub it is as simple as it can get for an IGH, and so what it true for the SA might be true for other 3-spd IGH brands such as Shimano). The Kent-Moore tool for this costs much more. went to a radiused shoulder. Polish the seal seat on the half shaft if it is rough. If it is milky, that usually means you have a water leak from a loose vent line or a worn seal. Probably the most common failure is the shaft seals. saw the rolling 180 pound tire until it burried itself into her rear door. Product Description Bafang Latest Super Powerful 36V 48V 500W High Speed Brushless Geared Cattette In Rear Wheel Hub Motor for Electric Bike This rear-drive motor, which is compatible … There are many different types of electric bike motors divided by different attributes, for example, 350W or 500W by the motor power, front motor or crank motor by the motor position, etc. Friction-based shaft— this type of electric drive installs the motor … Rough spots in the rotation would indicate a bad bearing or rough gear face. The splines on the halfshaft, output shaft and inside the gears should be inspected for damage and wear. Hub motor— ideally, the term hub motor refers to a motor that replaces the hub of a wheel. The 36v 250w Bafang hub motor should be able to comfortably run at 500w all day, without compromising reliability. Luna Cycle is very proud to announce a kit based around the most advanced hub motor available anywhere. Recommended maintenance is an oil change every year or every (some number) of KM, whichever comes first. spindle designs. Loosen the adjusting nut and retorque to 25 foot pounds. Pulled the steering arm cover (I As we were approaching a very busy Seeing that our older rigs (1992-93) Gearbox repair and rebuild services to the industry nationwide, United Gear Works available 24 hours a day, 7 days a week We have been for over 55 years in repair industry. There is a seat repair sleeve available from dealers if the seal seat needs repair beyond polishing. I'm about to rebuild the geared hubs on my project truck, and would rather go with the safer solution, but not spend a ton of money replacing a bunch of parts. past 2 years until now. With the hub fully assembled, you can pressurize the hub to 2 psi with compressed air and use soap and water solution on the seals and cover plates (look for bubbles) to determine if there are any leaks, or you can create a vacuum to see if it will hold. While it can outlive the bicycle it's installed on, having it cleaned up every once in a while will still extend it's life. Looking at the pictures of that blog post it's a Sturmey-Archer 3-speed. The seals and seal wear surfaces should be inspected for wear and grooving. $33.00. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Some people have had success increasing the lifespan of the plastic gears inside geared hub motors by replacing one of the three plastic planetary gears with a metal gear. This Shimano 3 speed internal gear hub is the latest version with a "Shimano … match (CTI and non-CTI). If a 3-gear hub is broken, it is easy to take apart and build together again. Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. If you opt for doing it yourself, find your hub model and follow your maintenance manual (If it's a Shimano Nexus Inter-3 hub the maintenance should be similar to the 7-speed, explained in the dealer's manual link above). When I examined the parts I The steps are really easy to learn. The geared motor (below) is a little more complex, but the clever complexity makes it lighter and smaller. End play is the amount of movement in the gear along the length of the gear. I absolutly love this truck and it's been virtually break down free for the I'm not exactly sure which model it is but. For example, theres an oil port on SA hubs as well as older hubs which you periodically have to oil. screw that is supposed to hold the nut tight and it should not be under Torque the adjusting nut to 40 foot pounds. The end play is supposed to be .001 to .006 inches. I guess the washer was too thin and they were needing to be The wholesale price from China for a geared hub motor is around $60 before shipping. If it is a Sturmey Archer, SRAM or any other well known brand, it will mostly do >50.000 km as well. Thanks for contributing an answer to Bicycles Stack Exchange! * No warning signs other than a quick loss of air pressure and very loud It only takes a minute to sign up. Why do the ailerons of this flying wing work oppositely compared to those of an airplane? main vehicle in the winter. So I took it apart after I got home to see how it ticks. Were John Baptist and Jesus really related? The hub is pretty simple. What is this unlikely-looking contraption ("plutonium battery and scientific equipment") they're making Jim Lovell cary around a parking lot? And these motors mechanically designed for either high speed or high torque. The hub is pretty simple. I only know of one instance of the output shaft breaking. On the way to South Dakota an Interco Super Swamper Radial blew up on the left rear - on the freeway at 70+ mph. locktite treatment. The brushless geared hub motor sellers on the site are carefully vetted before being approved. If it is scored deeply, it will just cut up the new seal. ), and opened it up before the ride home. 2. Bafang freewheel failure and (perhaps) repair. If the input seal fails, all you have to do is remove the halfshaft, pry out the old seal and tap in the new. If this site has helped you consider a Donation. noted that there was no sign of locktite or any other agent on the lock One main reason not to remove the retainer is that there are shims under it to set the end play of the input gear. I also believe Dutch weather is fairly mild compared to some other countries (lots of rain but very little need for salt and gravel in the winter), and many of those bikes have fenders and chain guards that will also do a great job keeping water and dust out. Rotate the output shaft and input gear both directions to see if you can feel any rough spots as you rotate. * Purchased, serviced, and maintained by Great Lakes Hummer (love those If there is a pressure or vacuum leak, water can enter the hub when you drive in water. They are generally very robust but are often a bit larger and heavier than the geared motors. It is a Shimano. In theory, you could just change the motor controller to one that can handle a higher current – e.g 36v 20A. The Bafang rear-drive geared hub motor, is compatible with disc brake, has a rated power of 750W +. Lake Park Marine 1740 N, Stemmons Fwy Lewisville, TX 75067 (972) 436-8422 I was wondering how complicated it would be to do maintenance by myself and if anyone has experience with internal gear hubs? What is the meaning of "Do not execute a remote command"? Where do you cut drywall if you need to remove it but still want to easily put it back up? Here's a blog post that concurs. What is meant by openings with lot of theory versus those with little or none? I'm having all the hubs checked so that this Making statements based on opinion; back them up with references or personal experience. Everyone Have I offended my professor by applying to summer research at other universities? Both pressure or vacuum can be connected at the vent connection. Sometimes this can be a flat disk motor, other times it is not a disk motor. dimensions. But that's another story...... As I was changing tires, I noticed that the hub was warm and much warmer than the rest of the hubs. The vehicle was pretty good about it as I managed The LBS which I bought the bike from has since closed down and I haven't managed to find another bike shop which does maintenance on this kind of bike (the last one I visited just told me if my bike broke down I should get a new one). Internal hubs can last a very long time if internal parts are kept lubricated and free of contaminants. The input gear drives the output gear, which is splined to the output shaft that the wheel is bolted to, and also runs on tapered roller bearings. Jack up each tire and try to shove it in and out. How to deal with the parvovirus infected dead body? My experience as a bicycle mechanic in the Netherlands: don't mess with it. The input gear at the top is driven by splines on the outward end of the halfshaft and is supported on roller bearings. If it does, you need to inspect the output shaft bearings and/or tighten the output shaft adjusting nut. Shimano Nexus 8 internal hub skip/clacking noise when under torque. Internal Gear Hub (IGH) Mid motor and an internal gear hub are a really sweet solution for an electric bike. mean? The key to this motor is it uses two forms of gear reduction, so the rider effectively has a low gear with double the gear … A large inspection cover is on the side of the hub and also holds the oil fill connection. Direct drive hub motors have no gears inside and require little to no maintenance. Our geared hub kits are compact and well thought out conversion kits for bikes with 20" (folding bikes), 26", 27.5" and 700C wheels with a range of battery capacity. The input gear drives the output gear, which is splined to the output shaft that the wheel is bolted to, and also runs on tapered roller bearings. The gears must be replaced as a set, if necessary. ENVO Dealers; Become an ENVO Dealer; My Account; Search for: Geared hub Motor Kits FarhadBC 2019-11-19T02:16:58+00:00. Use Loctite 518 anaerobic sealer (red gooey stuff) on the steering arm cover and tighten the screws to 65 foot pounds with blue Loctite. Mine is a 93' wagon and through about 94' they used a How did ISIS get so much enmity from every world power, and most non-state terrorist groups? (Happens almost never.) Brake type: V-brake, rim brake and disc brake are compatible 3. Bearings and races should be inspected for rough spots, pitting or corrosion. While most hub cores can be fully disassembled you don't need to get any further if it's in working condition (no rust, dust or other contaminants; oil or grease should be clean). Then again, maybe it Cogs can wear out and need replacing eventually; Can’t be used for regenerative braking; More complex, more to break . INSTALLATION & REPAIR. © Copyright 2000 - 2007 by Tony Bartel and Chuck Kopelson 10/12/1999. 2. car our ours. GET IN TOUCH. squared shoulder spindle (this is supposedly a weak spot) After 94' they If you remove it, you may upset the end play setting. Every hub must work correct in the smalles or biggest gear without a cable attached. Early spindles had a sharp shoulder, which acted as a stress concentration point where cracks can start. are using almost all the same stuff from the military, I'm wondering if Check the output shaft for endplay. Sand and mud accelerate the wear. In either case, the motor is the hub—instead of being mounted beside it or near it. If this doesn't work, de-attach the cable. Finding a bearing balls is easy to, but finding a spare gear … In comparison, a larger 600 watt geared hub motor such as the BMC will cost $250 wholesale from China. I had Two winters ago(2002), going over a pass John Ward, one of the AM General Hummer techs helped me inspect it and we found nothing wrong other than some water contamination and a worn input seal. To adjust the output shaft: remove the steering arm cover. Rotate the output shaft 5 times or so. friends, and our 10 month old daughter. Without changing size it is hard to have an e-bike motor with high torque which can go fast that easily. exact thing. A reduction ratio of 1: 5 and a maximum torque of 80 N.m, providing ideal power for e-bikes! * Aux. Don't exceed 2 psi or you could damage the seals. spacer and differences in current parts. If you want to inspect the hub, before you take it apart, remove the halfshaft and wheel and tire. I put in new oil and a new input seal and drove it home to Wisconsin without incident. * NO seals have been repaired/replaced on the rear hubs. intersection in Merrillville, IN, the right rear A arm slammed to the Which is best: Invest HSA money using employer sponsored account or old HSA account. In fact, everything is interchangeable on I was driving to dinner Friday night in our 1993 Hummer with my wife, our 2 The hub assembly is attached to the suspension a-arms with the upper and lower … Motor power is 700+ watts peak at 36V.. Depending on the quality of the work and conditions you ride in you could have to do it up to once a year, but a well-done job should last 2-3 years even in the worst conditions. The gears should be inspected for wear by measuring the backlash (movement due to clearance) between the gears. distinguish between old and new designs or identify the need for the spacer. This system uses a 20 amp controller. Bafang fatbike motor … think that is what they are called), removed the lock screw and gave it the With time and some patience you'll become good at tuning it just right. same, bearings, fastners etc. The first time was in the parking lot of the Best Western in Deadwood, South Dakota after our event this spring. Finding a bearing balls is easy to, but finding a spare gear is probably not so easy. Her entire door was shoved in and thankfully no one was hurt in her I'm trusting her life as well as my new The manuals call for removal of the upper gear retainer that the seal is pressed into, but removal is not necessary if you pry out the old seal carefully. Q128 48V400W-500W Rear Driving V-brake, rim-brake, Disc-Brake compatible EBike Hub Motor Specification: 1. Do you completely disassemble it? Enjoy the ultimate freedom to go wherever you want, whenever you want. the person in the turning lane was not so lucky. Why is the House of Lords retained in a modern democracy? It is only the bare motor … For 52V see our high-powered geared motor kit.) M800 Mini Mid Motor. Connector: Waterproof Hall sensor and sensorless compatible plug. The k-m numbers for the hub seal drivers are as follows: J-8092, long driver handle. In the pictures, I did not remove the output gear from the hub. in a blizzard (I'm In the mountains of central Idaho) The right front wheel, J-44905-A, input seal adapter (late style recessed seal). She was more scared and shocked than anything else and her car was quite a However, I've heard of some enthusiasts drilling their own oil port though :). Why does long long n = 2000*2000*2000*2000; overflow? probably backed off and let things come to a stop before proceeding. If this still doesn't work, the hub is broken. This allows the metal gear to take the brunt of the stress, saving the other two plastic gears and extending the usable life of the hub motor. The input gear at the top is driven by splines on the outward end of the halfshaft and is supported on roller bearings. The low power motors … Direct Drive Hub Motors for E-Bikes. Maximum backlash is supposed to be .018 inch. Fork Size: 135mm. If the outside of the hub is wet with oil, you likely have a seal leak. Does the new style, split spindle nut fit on the older spindles that have the nuts with the fingers on them? pressure to loosen as it faces a keyed washer. Now I see market is full with hub motors … to merge into traffic on US30 was watching my fireworks display and never If it doesn't shift well, first look at the cable. The hubs are vented to the air cleaner to assure there is no vacuum generated when the hub is submerged in cold water, so there is a connection on the side of the hub for the vent line. Use Loctite 272 (red) on the lock screw and tighten it to 90 inch pounds. Pry out the old seal. guys up there) Add to Cart Add to Wishlist Add to Compare. was pretty busy until I lit up the pavement with the A-arm. Contact; Inquiry Form; Book an Appointment; DEALERS. Is it possible to beam someone against their will? Voltage: 48V. Kit Installation Videos; CONTACT. Check the 85W-140 Gear Oil. As far as the 3-speed hub in initial question is concerned follow your hub maintenance procedure or find someone who can do it. heard of a MILITARY HMMWV geared hub warning/bullitin pertaining to this All in all the repair took about three weeks because of the I guess looking back, this could have been a whole lot worse than it was Learn More about M800 Visit derosa.it. It requires a special adapter spacer to fit the changed But I wanted to do a more thorough inspection. Geared Hub Motors Cons. Remove the steering arm cover on the back of the hub. ground and we went skidding through the intersection with a HUGE shower of Gee, how did that water get in there? doesn't happen to my wife anytime in the future seeing that this is her Introducing our 350 watt, 700+ Watt (peak) geared electric hub motor kit. screw or clamp nut. If you do remove the retainer, use Loctite 518 sparingly to seal and torque the screws to 35 foot pounds with blue Loctite. Which means maintence consists of throwing it away and buying a new one. More complex hubs are much more expensive and often more prone to failure, and if you wait until it fails to perform the maintenance it will likely be too late already to save the hub. If there is a small hole for lubricant, only do this once a year or so, with some thin grease, but not oil. becoming lodged in a hillside. Free shipping on many items | Browse your favorite brands ... 36V Brushless Gear Hub Motor 500W for Electric e Bike Conversion Kit Rear Motor… seeing that traffic is usually VERY heavy right there at I-65 and US 30 but You just need to be aware of what 1. There are lip seals at the halfshaft input and the output shaft. It should not move. Bafang/8fun spare parts for bldc hub motor replacement, bafang central motor repair ... Bafang BBSHD large steel reduction chainring gear and cover. Powerful and efficient, this motor comes with a freewheel 7 speed multi gear … Asking for help, clarification, or responding to other answers. * 40,000 miles The retainer is plastic, so don't let the pry tool scratch the seal bore. You need to remove the output shaft. Gears are awesome, you already have gearing on your bike - it can turn a bunch of low-torque circles into a few high-torque circles, or the reverse - this is handy if you've got a tiny motor and you want to make it push along a loaded bike, so the motor … About Bafang. Motor color: Black. this might have been overlooked somewhere down the line. Dapu delivers precision bicycle drive systems that perform at the top of their game. M M Marine Service at 1047 E State Highway 121 Ste D10 was recently discovered under motor repair. Slide the output shaft out. The vetting process ensures that all of them comply with specified quality standards so as to ascertain to the shoppers that only optimal brushless geared hub motor are on sale. Relevant links: I have also heard that internal gear hubs are generally maintenance free, but was wondering how true that actually was. J-35184, output seal adapter (early style seal). The facts are as follows... The hub assembly is attached to the suspension a-arms with the upper and lower ball joints, and steering is accomplished by the tie rod attached to the steering arm cover. You probably only need to adjust the tightness of the cable. With their old 3 speeds, you should expect to do that every 50,000 km or so. But I have had one run hot for some reason, so I took it apart. happened at 8,000 feet in the middle of nowhere. I thought maybe some bearing damage was done when the tire blew. We have many front and rear hub motor options both as bare hubs and prelaced into rims. 4. Direct drive hub motors don’t have any internal gears and geared hub motors have only single gear ratio. Special J2 Cable for Hub Motors $ 19.00 Add to cart; 6-Pin Waterproof Connector $ 1.00 Add to cart; Brushless Hub Motor 10in (48V-72V) (800W-6kW) $ 179.00 – $ 499.00 Select options; Brushless Hub Motor 13in (48V-72V) (3kW-6kW) $ 449.00 – $ 599.00 Select options; Car Hub Motor … Turns out the clamp nut holding the spindle had come off. This ebike conversion kit turns your normal bike into a stealth efficiently powered fun electric bike. All brushless geared hub motor … Commuter bike for better performance: less weight, or internal gear-hub? Installing the new output seal is interesting because it is so big. the main nut and the whole assembly slid off with the wheel/tire and all. I run my bike all winter long with a Nexus7 hub (SG-C3000-7R) - with Montreal's winter at the very least I need to clean up all the grime that sets around the sprocket and nearby parts, and if you need to get that far you might as well remove the hub core and dip in the lube (see Dealer's Manual p.48).
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