EGO 56V PowerHead - A Look Inside
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- Опубліковано 7 вер 2024
- In this video we look inside of the Ego Power Head. We had a request to do a video of the rotational speed of the shaft of the 2 speed levels and also take a quick look inside. Take a quick look at the 7mm 7 spline shaft. Hope you find the video helpful. Thanks for watching!
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I used an optical tachometer to measure the output speed of a STA1500 with brush cutter blade and STA1600 powered by a PH1400. Both were 5000/6000 rpm low/high. Gearbox is about 1.66:1. That's a shaft speed of ~8300/10000 rpm! The motor gearbox is ~2.2:1. That motor is screaming at 18000-22000 rpm!
Interesting BLDC design. Shows you how much you can get out of small motors.
Thanks again for the video. If the end is a 7mm allen it's pretty easy to machine and adapter for it and not have to machine a splined adapter for the head itself, this way you don't have to disassemble it, just add your own attachments like any other EGO attachment.
Awesome!!! Thank you very much! Keep up the great work!
I will also agree with you that ego is very well built
THank you for this, my new Power head just stopped working- I was trying to gut something and just kaput. We got for christmas 2022- it is now April 2023. Guess I will have to give a call to the support line- urgh- Makes me want a gas powered device, At least I can figure that out with out an electrical engineering degree-
Same issue here - wonder if you ever figured out what the problem was?
Maybe put a propeller on an extension and have a trolling motor..? But that’s probably the craziest idea so far ..
Someone did mention they were doing that! 🤣
EGO makes a 2000W head for their pro string trimmer. Can this 2KW motor be placed (or do they make one for) the Multi-head system (normally a 1400W/1.4 KW motor)?
I really like your channel’s emphasis on repair, especially. the batteries. Have you noticed any increased failure rate of the 7.5 or 10 AH batteries 🔋?
Thanks for your comment. I wish I could say. I honestly have had no experience with the pro string trimmer, the 7.5ah or the 10ah packs. I try to share what I have learned, but I don't even own these yet. I have many 2.5 and 5ah packs. I do want to get some of the 7.5 and 10ah eventually.
@@ThriftyToolShed
Thanks for your honesty to speak strictly from your personal experience and to not speculate about things which are outside of your actual experience. UA-cam is full of people who mis-represent themselves (“armchair experts”), offering advice for things the have never done. Your integrity is much appreciated 👍😎
Great info, thanks! Speaking of being hard to keep everyone happy, can you test the minimum RPM in each speed range? I'd really like to know how slow it can go so we get the full range of operation. I'm picturing this powering an e-bike!
It does not have a very good speed control. It seems they designed the speed control specifically for the edger, pole saws etc. and the low end starts up pretty high. It doesn't vary alot. May not be great for take off! 😁
I went through 2 of these power head in a very short period of time with a brush cutting blade. Both completely stopped working after being overloaded. One the fuse was burned, I replaced it and then everything started smoking so I would need to replace the whole electronic harness, board, heat sink etc. The second one the fuse didn't burn but not life at all, assuming it's the same thing and all the electronic need to be replaced. Obviously, it's one of those products where it isn't made to be serviced all the electronic and everything is soldered together and the part with shipping is the cost of a new one. Built to go to the garbage, what a shame, at that price point I thought I was paying for quality but obviously only price high, no quality made in China junk. Also currently have a battery lasting half the time of the other ones, getting replaced under warranty. If I could I would give Echo a try instead.
Good to know. I have just been lucky it seems. I push mine extremely hard with the brush cutter sometimes. I thought I would do a video on how well it cut with the cutter and I would use it very little. It cut impressively well and I use it a lot now. If mine died today I would not be upset since I know I pushed mine way harder than designed for. The electronics are potted and will be difficult to repair for sure. I do feel like the PH1400 power head itself is really cheap for how much power it has at around $140. I have seen them go for as low as $129. I also bought one for $79 when Home Depot was clearing them out before Lowe's started carrying them. So I got lucky with that. I do have a video on the ECHO 58V string trimmer also. I simply enjoyed taking it apart and seeing how it was made and I did repair it. You can see some differences in them for sure and you can see how the shaft wore out on it. I myself like the EGO 10X better, but that was the older 58V which was made for ECHO by TTI. The New ECHO equipment is now 56V and does look made much better made no doubt! Thanks for sharing, it's good to know that these are not holding up to brush cutting well and I had no idea with only mine to judge by. The older ECHO may be worse, but the newer 56V maybe not? I do love the grab and go of the brushless cutter when I need it and it is still powerful. I do cut more vines etc. than larger brush most of the time. Hopefully it will still hold up cause I'm gonna use it till it quits, lol.
Hey TTS. Good job covering EGO products. I've learned a lot from your videos. Do you know where I can get wiring diagrams or electronic schematics for the EGO products? I have a failed Power Head PH1400 (positive and negative input shorted) and could really use the information for troubleshooting. Thanks!
I do not know of any diagrams/ schematics available other than what we share ourselves as we learn what we can. That really is the main driver of sharing what we can about repairs. I have a Facebook group called "On the Bench" where we can share pictures or even videos if needed and more people are able to respond and possibly help in the group. I have not had that exact issue myself, but I would lean towards shorted mosfets if the controller if shorted like that. I do have a similar mosfet replacement video on the EGO chainsaw and at least one EGO blower repair that showed mosfets being replaced, but will be different on this controller of course. Best of luck to ya and Thanks for your kind comment!
@@ThriftyToolShed thank you for the tip. I confirmed that it isn't a mechanical switch failure (too bad). I suspect you're correct that the chainsaws and blower's use very similar circuits. I am waiting for the warranty replacement so I can use it as a baseline for measurements. I noted that Cutler's sells the replacement electronic control assembly for about $113. Too bad there isn't better protection designed into the circuit. As a side effect of the bad Power Head, we fried several 2.5ah and a couple of 5ah batteries before we realized the head was the problem.
I promise to share my results.
Keep up the good work!
@schultzrus1
Hate to hear about the packs, I do share in a couple videos about the trace fuse on the connector board of the packs. It will sometimes pop in situations like this and can be bridged with a link like a 40A fuse link etc. to save the pack sometimes.
Best of luck to ya!
@@ThriftyToolShed good idea. Most were EGO brand but a couple were generic batteries too. Have you had any experience with the aftermarket batteries? BTW - when I started studying the Power Head problem I measured 0-ohms across the pos & neg blades of the head unit. Optimistically I will have a bounty of batteries if I ever repair them all! 🙂
The couple aftermarket packs I have worked on also have a trace going to the positive side on the connector board. Looks like they all likely add that for the weakest link!
I love my power head I use it all the time just yesterday I was using a bush cutter attachment I hit the side walk it stopped and I smelled a electric burning smell I cant figure it out what happen
My power head is still working, BUT it will only work the first time I insert the battery. Once I release the squeeze trigger, it will not restart until I remove and reinsert the battery. Any tips to try and fix this problem? Thanks for the videos!
I have seen a similar issue that it will just pulse or lightly squeal for just a second and not start up. It seems to be a bad controller since it acts as if picking up a higher load than allowed by the controller and shuts down.
My 56V Ego Powerhead trigger has possibly malfunctioned. Pulling on the trigger the string trimmer head jumps but doesn't continue to run and then on a subsequent pull, head gets up to speed and then winds down. Should there be a sweet spot or should the trigger operate through the whole pull. I vote whole pull so could you possibly shed some light on my PH1400 trigger issue? I'm not pulling my hair out but the trimming is not getting done either. Thank so much in advance. I like your channel!
Thanks for your comment. I agree it should work through the whole pull. I sometimes have that happen when I have the brush cutter on there with the heavy inertia load spinning up, but should not do that on a common load or tool. Sounds as if the high current sense of the controller is shutting down. So either a pack Voltage dropping or high current sensed? I would check pack and double check that it all turns free. Also does it do the same thing with just the power head running and no attachments? Just thoughts here. The pack can also cause a 10 sec run and shutdown when the D-terminal is not detected between the tool and pack, but that doesn't sound like this! If your lucky it's just some grass etc. Wrapped around the trimmer head loading it up. Best of luck to ya!
Is there anyway to grease grease the motor and gearbox? mine is grinding and shuts down. It's 5 years old.
I have not had to do mine yet. It is possible it has to be disassembled to re-lube? Best to look it over well anyway and clean it up if grinding...
@@ThriftyToolShed OK, I just opened it up. At 3:45 you see a #2 Philips head screw. I removed it and could see a gear in there. I pumped that full of grease. It works again. Don't know for how long, but I was just able to trim about 90 feet of edging. It would be nice if EGO made this accessible from the outside.
HIS comment BROUGHT ME HERE! 😊
Love your videos. The blade on my Ego edger stops spinning upon contact with the ground and the motor makes a high pitched whine. If I detach the edger, the power head sounds fine. Any ideas? Thanks in advance!
It sounds as if a coupler between the motor and the edger is worn/slipping. I have not had this issue with an EGO power head yet, but I am actually making a video right now on an ECHO 58V power head with this issue. I would try to make sure it's not simply the coupling at the splines where the attachment lower boom end meets the upper boom on the power head. You can even try a different attachment if available to make sure. It sounds as if you already know the sound or high pitched whine is coming from the power head area though...
So most likely it's that. I guess it's possible also that the high pitched whine is coming from the motor and controller in a locked rotor high current fault? I am assuming the sound you hear is more of a rotating sound like mine, but it is possible it's an electrical noise and mechanically not rotating! The ECHO I am working on right now has a sintered coupler between the motor and the upper boom shaft. The upper boom shaft square end has rounded and I am shortening the shaft to get it back going. The EGO is most likely a 7 spline shaft instead of square shaft.
I wish you the best of luck and thanks for your kind comment!
Mine blew the fuse after clipping my neighbor's chain-link fence with the pole saw. They don't sell the fuse separately but I've found out it takes a 40amp and tried an automotive 40amp fuse but it blew immediately after pulling the trigger. Ordered a 58v dc slow-blow 40amp fuse from DigiKey but not sure if the slow-blow will cause damage to the battery if there's more wrong with here than just a fuse. What are your thoughts?
It seems like it could possibly be a mosfet shorted if it blows the 40A immediately. Typically the slow blow will still protect against a short circuit and blow quickly. I wonder if at least one of the mosfets are shorted similar to the ones shown in the EGO chainsaw repair video I have and the EGO blower repair. Not the blower controller retrofit, but the controller repair video. I do know the controller is bigger in the power head. I have not worked on mine yet.
@@ThriftyToolShed can that be tested with an ohmmeter? I'll look for your repair video.
@@naamangeist7843
Yes, I used the DMM to find the short circuit on the controller phases.
ua-cam.com/video/FxO7CpV4b9g/v-deo.html
@@ThriftyToolShed yep found this video shortly after my comment. Great info here. Thanks!
You mentioned in the video that there is a bearing at the end of the spline shaft. Is this a ball bearing or a sleeve bearing?
It is a ball bearing.
Running a limb saw (AKA pole saw)… chain slipped off and lost power…
The power head no longer supplies power (swapped components to a edger… same issue)
Battery is fully charged and battery works on other EGO products… how can I troubleshoot?
EGO is replacing this power head under warranty but I hate to trash it… if there is a simple / easy fix?
Thank you!
I have not yet had to work on an EGO power head. These may have a fuse similar to some of the blowers that I have worked on. Those were built in to the controller itself. I know from looking inside the PH that the speed controller is different. Still similar troubleshooting I would think and possible to have Mosfet issues as shown in the blowers as well. I am not sure if the potting on these is hard like the mower though?
My PowerHead seems to be stuck in the 2nd speed, but seems like the speed 1 RPM. When I put it into Speed 1, nothing happens. Is this an easy fix?
I have not seen that exact issue to say for sure. I have seen mine not want to spin up on either speed before and it actually was the battery was low. The pack has a green light so above 15% on the older 2nd Gen packs and it did not turn red or flash. The pack was reading about 48V or so and once I charged it full or inserted a fresh pack the Power head would run again? That is the only issue I have had so far.
@@ThriftyToolShed I’ve tried several batteries, both 10 and 12ah with no dice. I’d be fine if it were stuck in high gear, but the low gear is killin me.
@@TylerJSpaulding
Dang! Hopefully it's just a selector switch contact or bad connection at the connector or board and not in the controller itself!
@@ThriftyToolShed I’ll have to tear it apart and see, but for speed 2 to be speed 1 and speed 1 not work? I think it’s more than just a bad connector. Unless a gremlin got in there and switched things on me.
@@TylerJSpaulding
At least you already know a lot about it!
I was hoping you would take apart the trigger portion. After using it for about an hour, my hand is a bit tired... old fart here, but yeah.. wondering about loosening up the trigger.
It should be very similar to the blowers that I have repair videos of, it has a spring and could most likely be weakened a bit! Best of luck to ya!
@@ThriftyToolShed Awesome. Thanks
Hi- I’m sorry to bother you- I’m having trouble getting the coupler (what you call the adapter) back on to the main tube housing. Does the coupler push over the rubber boot, or does the rubber boot push up against the middle part of the coupler where it constricts? I called customer service and they were no help.
Sorry it's been a while since I shared the look inside video of this power head. Are you asking about the connection for the attachments or the motor assembly itself?
Hi! Thank you so so much for responding. Yes, the coupler that goes on the far end of the tube/housing that is then used to connect to attachments. I took it off and now that I’m trying to put it back on I’m not sure how far to push it. In the center of the coupler is a slight narrowing and that’s what the rubber boot from the drive shaft pushes up against. But should it slide *over* the rubber boot? It would make sense that it does and form a tight seal, but I can’t push it any further. Anyway, no pressure, and please don’t worry. Thank you so much for any help! ☺️
OK I figured it out quite by accident… The near end of the coupler assembly (the end closest to the motor - not the end with the green knob) tightens via a hex nut that is threaded through a small black washer located between the tightening flanges (tabs) of the coupler. That black washer fits into a notch on the tube housing - and the only way that it will fit, thereby permitting tightening of the hex nut, is to apply a significant pressure on the coupler against the tube housing. (Downward worked best for me with the machine vertical). Doing so seats the coupler firmly against the driveshaft, and permits the black washer to fit into the notch, and permits the hex nut to slide through and the entire assembly to be tightened. Wow. It’s genius but totally infuriating!
Ok, that is why I was confused about which end you were describing. That makes sense. Glad you figured it out!
I'm experiencing vibration on my power head.. it's not with a specific attachment, is does it without anything aswell... It's been on and off. Have you had any experience with this by any chance?
I have not to say for sure, seems like it could be the coupling itself or a bearing causing it if I had to guess.
@@ThriftyToolShed yes I was thinking it could be the same... I'm happy to take it apart but I think I may void the warranty
..
@@joshuabush2569
If it's under warranty I would contact them!
Mine runs for about 5 sec the shuts down wait a few sec then it will do the same any thoughts?
Sounds kind of like the pack is not detected on the D-terminal, but that will usually run about 10 secs or so. It could also be a bad pack if the red light comes on showing an issue?
Mine just stopped working
😫
There's not a clutch is it. I found one that free wheels. If the transmission is broken im not interested.
No clutch. I have seen the small gearbox on the edger slip due to gears not meshing. I have not seen the power head slip. I have a new video out with a Echo 58V power head that has a bad shaft and it slips where it couples to the motor pinion. I have seen no issue with an EGO power head yet!