Popular Post houseofjob Posted February 25, 2017 Popular Post Share Posted February 25, 2017 Re-posting a SpeedFeetUK customer incident of Gotway ACM V2 / Monster pedal breakage: https://www.speedyfeet.co.uk/blogs/things-concerning-safety/gotway-acm-footplates-safety-check Gotway ACM Footplates Safety Check by Ian Sampson February 25, 2017 Failure of Gotway ACM Footplate A customer has reported the failure of one of their footplates. The style of footplate is the latest version of the ACM footplate. The model it was fitted to was the Monster 22" purchased late 2016. As always, Speedy Feet will announce any issues reported by customers to keep us all as safe as possible! SHARE this post to all those that it may apply to those it may effect (Button Below) We would recommend ALL riders check their footplates for signs of stress. (Simple scuffing and usual knocks are not part of this potential issue). Conditions of incident: Rider has done around 200 miles on the unit. Simply dropped off a standard size curb, has never done any stunts on the Monster (pretty difficult due to size of the monster!). Only ever used on road in the short distance it had traveled. Rider weight approx 100kg. THINGS TO LOOK FOR WOULD BE: 1. Stress Fractures (These would be actual cracks or signs of stretching of the metal, usually around points of stress, i.e. the hinge area). 2. Actual breakage / or splitting. Pictures of the broken footplate 9 Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted February 25, 2017 Share Posted February 25, 2017 Is this the only known incidence of that happening with GW pedals? Quote Link to comment Share on other sites More sharing options...
Pingouin Posted February 25, 2017 Share Posted February 25, 2017 How is this possible, the footplates are metal but they look plasticy on these pictures.. Scary if this happens at high speed, I'll check them before each ride from now on, thanks ! Quote Link to comment Share on other sites More sharing options...
houseofjob Posted February 25, 2017 Author Share Posted February 25, 2017 First I've heard. Quote Link to comment Share on other sites More sharing options...
US69 Posted February 25, 2017 Share Posted February 25, 2017 (edited) 2 hours ago, meepmeepmayer said: Is this the only known incidence of that happening with GW pedals? Yip! first ... KS16 pedal from early versions also had some breakage...but thats now fixed BTW: Was it Gotway or GO-A-WAY? :-) one of the last qualityproblems that was still missing....don't we have all faults that are possible now? :-) Edited February 25, 2017 by KingSong69 Quote Link to comment Share on other sites More sharing options...
houseofjob Posted February 25, 2017 Author Share Posted February 25, 2017 More disturbing is, given this was a Monster purchase from SpeedyFeetUK, these pedals were barely 2 months max of use. Quote Link to comment Share on other sites More sharing options...
Popular Post Marty Backe Posted February 25, 2017 Popular Post Share Posted February 25, 2017 1 hour ago, KingSong69 said: <snip> one of the last quality problems that was still missing....don't we have all faults that are possible now? :-) Well, we still haven't had a catastrophic wheel (spokes, etc) failure. So there's that to look forward to 1 3 Quote Link to comment Share on other sites More sharing options...
One Posted February 25, 2017 Share Posted February 25, 2017 Looks like they are made of magnesium - same material used in skateboard axes. Had some of them broken and it looked similar. No fun, even at lower speed... 2 Quote Link to comment Share on other sites More sharing options...
Mono Posted February 25, 2017 Share Posted February 25, 2017 1 hour ago, One said: Looks like they are made of magnesium - same material used in skateboard axes. Had some of them broken and it looked similar. No fun, even at lower speed... probably an aluminium-magnesium alloy, no? 1 Quote Link to comment Share on other sites More sharing options...
Radislav Posted February 25, 2017 Share Posted February 25, 2017 Poor pedal. Afaik it has 120 kg max static load? 100 kg rider jumping off a curb exceeded this load significantly. Nevertheless their metal quality looks very disturbing. 1 Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 25, 2017 Share Posted February 25, 2017 2 hours ago, Radislav said: 120 kg max static load? 100 kg rider jumping off a curb exceeded this load significantly. I wonder if the rider landed with soft knees or landed with locked knees? I bet there would be very little chance of pedals breaking if you use the legs to absorb the shock. 1 Quote Link to comment Share on other sites More sharing options...
Mono Posted February 26, 2017 Share Posted February 26, 2017 42 minutes ago, steve454 said: I wonder if the rider landed with soft knees or landed with locked knees? I bet there would be very little chance of pedals breaking if you use the legs to absorb the shock. which shouldn't be understood as passing the responsibility though 3 Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 26, 2017 Share Posted February 26, 2017 1 minute ago, Mono said: which shouldn't be understood as passing the responsibility though Yes, I agree, the pedals should be much stronger and be able to take shock loads much higher than the rated load, just like wire rope used in cranes. The load test should be many times higher than the rated strength to ensure safety. 1 Quote Link to comment Share on other sites More sharing options...
houseofjob Posted February 26, 2017 Author Share Posted February 26, 2017 You mean Gotway's claimed procedure of testers riding with other testers on piggyback isn't good enough ? (read: sarcasm) 1 Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 26, 2017 Share Posted February 26, 2017 3 minutes ago, houseofjob said: You mean Gotway's claimed procedure of testers riding with other testers on piggyback isn't good enough ? (read: sarcasm) It is if they fall about four feet from one level down to another Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 26, 2017 Share Posted February 26, 2017 Okay, now I get it. A 140 pound man and a 100 pound woman can safely ride a Gotway piggy back style, if they don't drop off a curb. 1 Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 26, 2017 Share Posted February 26, 2017 4 hours ago, Mono said: probably an aluminium-magnesium alloy, no? From Wikipedia, alloys are strong. Maybe they didn't use enough aluminum for strength. Sounds like a magnesium- aluminum alloy which is what you meant to say, unless I am wrong. Quote Link to comment Share on other sites More sharing options...
Radislav Posted February 26, 2017 Share Posted February 26, 2017 7 hours ago, steve454 said: From Wikipedia, alloys are strong. Maybe they didn't use enough aluminum for strength. Sounds like a magnesium- aluminum alloy which is what you meant to say, unless I am wrong. Unless it has too much air bubbles inside No official complaints to them, I suspect. No official free pedals exchange program will be issued. All the manuals are full of warnings not to do any acrobatics and jumps. Nevertheless, Kingsong improved their pedals. Silently GW will do the same, imo. 1 Quote Link to comment Share on other sites More sharing options...
Jonathan Tolhurst Posted February 26, 2017 Share Posted February 26, 2017 That material looks very like the material used inside the Ninebot-One handle which is also very prone to breaking. 1 Quote Link to comment Share on other sites More sharing options...
Smoother Posted February 26, 2017 Share Posted February 26, 2017 (edited) Pedals and pedal arms (attach to axle) take quite a beating hauling (some of our) lard asses around, never mind jumping off kerbs, walls, being thrown down the road, etc. I'm going to Give Gottproblems the benefit of the doubt and assume this is either a one off, or this pedal sustained a hard impact that the rider might not have been aware of. after all, when they're bouncing down the street, and we're tumbling through the air, we aren't really in a position to monitor each individual impact the machine has to endure. And with the Monster' higher weight, any tumbling impact sustained by a pedal, has all that extra weight behind it. I Would agree that a few visual inspections aren't out of order; in fact I'm going to inspect my SingSong pedals now. Pedals are pedals. when more of these show up, I'll reconsider my opinion. Gottproblems may have a few.....eh...problems, but this is not one of them, yet, unless there are other pedal breaks out there we haven't heard about. Edited February 26, 2017 by Smoother 1 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted February 26, 2017 Share Posted February 26, 2017 I wonder whether a redesign of the pedal might be in order. If the hinge attachment were made of steel and the pedal bolted onto it I wonder if that would eliminate these sorts of failures completely. In addition that would benefit riders who want to swap out pedal sizes easily. It's basically a hinge that has to resist a small arm lever with significant force applied to it. Is it just for weight savings that aluminum alloy and magnesium alloy pedals are being used? Regular bicycle cranks and pedals don't normally break off even with rugged use (eg. mountain biking). Why not use a similar alloy? I think it might be a chrome moly steel which some tools are made of. It's super strong and doesn't tend to break as long as it's a proper thickness. 1 Quote Link to comment Share on other sites More sharing options...
houseofjob Posted February 27, 2017 Author Share Posted February 27, 2017 I vote for Titanium pedals! Or Adamantium! unlesss that's not a real metal alloy, which it isn't~ 1 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted February 27, 2017 Share Posted February 27, 2017 Vibranium for the win! http://scifi.stackexchange.com/questions/16328/why-cant-adamantium-cut-through-vibranium 1 Quote Link to comment Share on other sites More sharing options...
steve454 Posted February 27, 2017 Share Posted February 27, 2017 How about Unobtanium? 1 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted February 27, 2017 Share Posted February 27, 2017 No no Steve - the efforts to battle Avatarian species on Pandora would come at too great of a cost (ethically and financially) to mine Unobtanium for EUC pedal usage. 3 Quote Link to comment Share on other sites More sharing options...
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