Popular Post Asphalt Posted October 22, 2020 Popular Post Share Posted October 22, 2020 So I'm trying to figure out how Gotway has implemented the suspension on the EX. Based off of photos posted on this forum, I think they've integrated it directly into the pedal hangers! While not as visible as the suspension on the Kingsong S18, it's a pretty innovated design which makes good use of space provided by the hollow motor. As far as I can tell, it's a simple air compression spring, but I do not have the wheel, so I don't know if there's more going on inside (like an internal coil spring). I've put together this animate GIF with what I guess is the implementation. If anyone with a Gotway EX can provide additional details, I'd be happy to update the animation. 8 Quote Link to comment Share on other sites More sharing options...
Popular Post Hsiang Posted October 22, 2020 Popular Post Share Posted October 22, 2020 (edited) I should have it in another two three or days from EVX, and plan to open it up to poke around also, what is it that you like to know? By the way I have been bugging @houseofjob to do an open case review of how this wheel works since I am sure he can provide a much better write up of it, but he hasn’t been willing to so far. I am hoping that some peer pressure from the forum would change his mind.. =D The thing that weird me out is the extreme high pressure the shock is pressure at; 1200 PSI seems extreme. Edited October 22, 2020 by Hsiang 8 Quote Link to comment Share on other sites More sharing options...
Asphalt Posted October 22, 2020 Author Share Posted October 22, 2020 3 minutes ago, Hsiang said: I should have it in another two three or days from EVX, and plan to open it up to poke around also, what is it that you like to know? The thing that weird me out is the extreme high pressure the shock is pressure at; 1200 PSI seems extreme. Thanks, looking forward to your review! It'd be great to know if there are any dampening systems, apart from the rubber pads glued to the top and bottom of the central block - I'm hoping there's something interesting happening inside the pedal hanger column. There's also a large vertical column in the middle of the central block. My guess is that this is just being used as a support structure, but I'm curious if there's any spring/dampening happening there too. Yeah, 1200 PSI seems like a lot - by an order of magnitude. The solid block of pedal hanger metal should be strong enough to hold it, but I wonder how they're sealing it? Do Rubber O-rings work at that pressure? Quote Link to comment Share on other sites More sharing options...
Asphalt Posted October 22, 2020 Author Share Posted October 22, 2020 @Hsiang Would you mind measuring the diameter of the air shock tube in the pedal hanger? <very rough calculations> If it's 0.5-inch, the surface area of the piston head would be roughly .375 square inches. At 1200 PSI, that should support 450 lbs. Adding both sides that would be 900 lbs support. </very rough calculations> This leads me to suspect that there may be some internal spring that is preloaded by the air pressure? Quote Link to comment Share on other sites More sharing options...
Rehab1 Posted October 22, 2020 Share Posted October 22, 2020 The EX is fascinating but I worry about the low hanging suspension tubes and the machined block that ties the assembly together. 1 Quote Link to comment Share on other sites More sharing options...
EMA Posted October 22, 2020 Share Posted October 22, 2020 52 minutes ago, Rehab1 said: The EX is fascinating but I worry about the low hanging suspension tubes and the machined block that ties the assembly together. i never hit this part of any wheel i had...did you ever hit here ? i know it's not the exactly the same but pretty accurate Quote Link to comment Share on other sites More sharing options...
EMA Posted October 22, 2020 Share Posted October 22, 2020 1 hour ago, Asphalt said: it's a pretty innovated design to me is really good, integrated, protected, simple the first review remarks how easy is to setup and how well it works straight out of the box 1 Quote Link to comment Share on other sites More sharing options...
Rehab1 Posted October 22, 2020 Share Posted October 22, 2020 (edited) 10 minutes ago, EMA said: i never hit this part of any wheel i had...did you ever hit here ? i know it's not the exactly the same but pretty accurate Yes branches and rocks on rough trails. I’m sure it will be fine but the low hanging structure just looks ominous to me. Edited October 22, 2020 by Rehab1 Quote Link to comment Share on other sites More sharing options...
EMA Posted October 22, 2020 Share Posted October 22, 2020 6 minutes ago, Rehab1 said: Yes branches and rocks on rough trails Quote Link to comment Share on other sites More sharing options...
shellac Posted October 22, 2020 Share Posted October 22, 2020 1 hour ago, EMA said: to me is really good, integrated, protected, simple the first review remarks how easy is to setup and how well it works straight out of the box i definitely think it’s smart to keep it simple. one thing that seems annoying about the V11 is having to take the saddle off to fill those top chambers. Quote Link to comment Share on other sites More sharing options...
Popular Post houseofjob Posted October 22, 2020 Popular Post Share Posted October 22, 2020 3 hours ago, Hsiang said: By the way I have been bugging @houseofjob to do an open case review of how this wheel works since I am sure he can provide a much better write up of it, but he hasn’t been willing to so far. I am hoping that some peer pressure from the forum would change his mind.. =D 5 Quote Link to comment Share on other sites More sharing options...
Popular Post EMA Posted October 22, 2020 Popular Post Share Posted October 22, 2020 https://ecodrift.ru/2020/10/22/begode-ex-razbiraem/ 4 Quote Link to comment Share on other sites More sharing options...
FreeRide Posted October 22, 2020 Share Posted October 22, 2020 15 minutes ago, EMA said: https://ecodrift.ru/2020/10/22/begode-ex-razbiraem/ Not very impressive. 2 Quote Link to comment Share on other sites More sharing options...
Rehab1 Posted October 22, 2020 Share Posted October 22, 2020 34 minutes ago, FreeRide said: Not very impressive. The shock assembly looks sturdy and well engineered but being an experimental design I’ll be interested to see how it performs long term. 1 Quote Link to comment Share on other sites More sharing options...
gon2fast Posted October 22, 2020 Share Posted October 22, 2020 NYC Riders - please expose the pre-prod unit to water and test the weather sealing... at the end of the reviews though, lol. Quote Link to comment Share on other sites More sharing options...
gon2fast Posted October 22, 2020 Share Posted October 22, 2020 (edited) 7 minutes ago, Rehab1 said: The shock assembly looks sturdy and well engineered but being an experimental design I’ll be interested to see how it performs long term. interesting, same bolt pattern as the V11 pedal hangers, but flipped. If the brace in the EX can be flipped then one could install V11 pedals on a EX. Edit - Nope - false statement on my part, similar design, but the spacing is tighter on the GW/Begode. Edited October 22, 2020 by gon2fast 1 Quote Link to comment Share on other sites More sharing options...
Rehab1 Posted October 22, 2020 Share Posted October 22, 2020 1 minute ago, gon2fast said: interesting, same bolt pattern as the V11 pedal hangers, but flipped. So reverse ‘flipped’ engineering? Quote Link to comment Share on other sites More sharing options...
gon2fast Posted October 22, 2020 Share Posted October 22, 2020 sounds like a lawsuit.... who said that??? 1 Quote Link to comment Share on other sites More sharing options...
Hsiang Posted October 23, 2020 Share Posted October 23, 2020 2 hours ago, gon2fast said: interesting, same bolt pattern as the V11 pedal hangers, but flipped. If the brace in the EX can be flipped then one could install V11 pedals on a EX. Edit - Nope - false statement on my part, similar design, but the spacing is tighter on the GW/Begode. So am I correct to think that there’s an additional central air piston that act as a rebound damper? Quote Link to comment Share on other sites More sharing options...
Kurtosis Posted October 23, 2020 Share Posted October 23, 2020 I though the EX was fully suspended - batteries, rider, control board, etc, and that only motor+wheel were not suspended. Is this incorrect? Quote Link to comment Share on other sites More sharing options...
Lukasz Posted October 23, 2020 Share Posted October 23, 2020 13 minutes ago, Kurtosis said: I though the EX was fully suspended - batteries, rider, control board, etc, and that only motor+wheel were not suspended. Is this incorrect? Correct. however the un-suspended part weights 20 kg - but this is 3.6 kW motor - huge bearings, a lot of thick metal stuff in suspension - so the rest - batteries, board, chassis - weights around 19 kg - this wheel is almost 39kg! Quote Link to comment Share on other sites More sharing options...
EMA Posted October 23, 2020 Share Posted October 23, 2020 1 hour ago, Hsiang said: So am I correct to think that there’s an additional central air piston that act as a rebound damper? I think It damp the suspension at the end making it "more progressive" . interesting design btw Quote Link to comment Share on other sites More sharing options...
gon2fast Posted October 23, 2020 Share Posted October 23, 2020 (edited) I hope this design will eliminate the constant servicing that I am having to do with my current suspension wheel. Edited October 23, 2020 by gon2fast Quote Link to comment Share on other sites More sharing options...
Rawnei Posted October 23, 2020 Share Posted October 23, 2020 5 hours ago, gon2fast said: I hope this design will eliminate the constant servicing that I am having to do with my current suspension wheel. What servicing is that? Quote Link to comment Share on other sites More sharing options...
EMA Posted October 23, 2020 Share Posted October 23, 2020 i think all suspension wheel will need some maintenance compared to the "almost none" needed by standard wheels. To me the gw design seems more robust and protected compared to the other, but it's my guess, until we don't put some km on that thing we don't really know 2 Quote Link to comment Share on other sites More sharing options...
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