techyiam Posted July 10, 2022 Share Posted July 10, 2022 (edited) 45 minutes ago, Chriull said: Hardware cut off by firmware only happens, as written somewhere at around 200-220A Is this 200A pulse going to the phase wires coming from the capacitors in the controller, or from the battery? Edited July 10, 2022 by techyiam Quote Link to comment Share on other sites More sharing options...
techyiam Posted July 10, 2022 Share Posted July 10, 2022 1 hour ago, EMA said: i'm still riding it "old style" without pad, How is hard braking without pads on the Master? Quote Link to comment Share on other sites More sharing options...
Bizra6ot Posted July 10, 2022 Share Posted July 10, 2022 (edited) @Chriull This is the one of video posted on the previous page, yes max speed at this voltage (the max riding speed known with full batteries is about 90 kmh so about 70 kmh empty according to previous Begode hs wheels which corresponds here) estimated pwm reaches 90% on the log The owner felt the typical pedals dip and tried to recover but as he says himself he was too abrupt on this one and didn't succeed this time, he's used to these things and to ride at the limits of his wheels Edited July 10, 2022 by Bizra6ot typo Quote Link to comment Share on other sites More sharing options...
Chriull Posted July 10, 2022 Share Posted July 10, 2022 24 minutes ago, techyiam said: Is this 200A pulse going to the phase wires coming from the capacitors in the controller, or from the battery? I cannot see the label in ecodrift's teardown - Should be 3 pieces of 160V 680uF like in the exn? With their charge they should be able to provide some short 200A peaks - 105V*3*680uF = 0.2 C = 0.2 ... some 200A for 1ms (with half the voltage in average). So for short 10-20kHz PWM pulses this should be more than enough for the capacitors to supply the current. For the battery current (recharging the capacitor) crest factor one would need some measuring - for me estimations with internal resistances, stray inductances and capacitances are way out of my experience... Which raises the follow up question how much the capacitors get overburdened by exceeding massivly the ripple current... ;( 1 1 Quote Link to comment Share on other sites More sharing options...
EMA Posted July 10, 2022 Share Posted July 10, 2022 1 hour ago, techyiam said: How is hard braking without pads on the Master? you can't brake hard without pad but you can grab the light if you really need the braking algorithm is really good considering the inexistent leverage 1 Quote Link to comment Share on other sites More sharing options...
techyiam Posted July 10, 2022 Share Posted July 10, 2022 7 hours ago, EMA said: you can't brake hard without pad but you can grab the light if you really need the braking algorithm is really good considering the inexistent leverage Very true. Braking hard with and without pads are worlds apart. However, it is good to hear that braking is still decent without pads. Thanks. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post FlyboyEUC Posted July 11, 2022 Popular Post Share Posted July 11, 2022 Master Range test at 30mph avg riding speed. 5 1 Quote Link to comment Share on other sites More sharing options...
EMA Posted July 12, 2022 Share Posted July 12, 2022 sharing info: fitted a coil shock yesterday with a 750lbs spring, too soft for my 72kg, i use half of the travel when i step on. i'll try the 1000lbs 3 Quote Link to comment Share on other sites More sharing options...
techyiam Posted July 12, 2022 Share Posted July 12, 2022 3 minutes ago, EMA said: sharing info: fitted a coil shock yesterday with a 750lbs spring, too soft for my 72kg, i use half of the travel when i step on. i'll try the 1000lbs Is that after proper setting of the spring preload? With the damping set low, and you push up and down on it, did you feel that the spring rate is too low? Quote Link to comment Share on other sites More sharing options...
EMA Posted July 12, 2022 Share Posted July 12, 2022 1 minute ago, techyiam said: Is that after proper setting of the spring preload? With the damping set low, and you push up and down on it, did you feel that the spring rate is too low? let's say with the lower tightening the suspension could not even fully extend itself, i mean without the rider. so i tight the spring more and it works better but it's still too soft. --> t's not easy to tight the spring once the shock is mounted, and it's not easy to fit the shock if you tight the spring before mounting it 1 Quote Link to comment Share on other sites More sharing options...
techyiam Posted July 12, 2022 Share Posted July 12, 2022 (edited) 1 hour ago, EMA said: let's say with the lower tightening the suspension could not even fully extend itself, i mean without the rider. so i tight the spring more and it works better but it's still too soft. --> t's not easy to tight the spring once the shock is mounted, and it's not easy to fit the shock if you tight the spring before mounting it I see. Thank you. Very true, if the shock wasn't properly designed for longer, lower spring rate springs. I guess there isn't a lot of space in there to start with. Edited July 12, 2022 by techyiam Quote Link to comment Share on other sites More sharing options...
daniel1234 Posted July 12, 2022 Share Posted July 12, 2022 3 hours ago, EMA said: let's say with the lower tightening the suspension could not even fully extend itself, i mean without the rider. so i tight the spring more and it works better but it's still too soft. --> t's not easy to tight the spring once the shock is mounted, and it's not easy to fit the shock if you tight the spring before mounting it I preloaded mine 750 lib exa shock to approximately middle of screw - when it was out of master. I am 70 kg and I like it more than 550 lb DMN rpc-2s on mine s18. Quote Link to comment Share on other sites More sharing options...
EMA Posted July 12, 2022 Share Posted July 12, 2022 1 hour ago, daniel1234 said: I preloaded mine 750 lib exa shock to approximately middle of screw - when it was out of master. I am 70 kg and I like it more than 550 lb DMN rpc-2s on mine s18. tnx for the info, yes the suspension works really nice 1 Quote Link to comment Share on other sites More sharing options...
Freeforester Posted July 14, 2022 Share Posted July 14, 2022 2 Quote Link to comment Share on other sites More sharing options...
FrenchUsa Posted July 16, 2022 Share Posted July 16, 2022 (edited) Edited July 17, 2022 by FrenchUsa Quote Link to comment Share on other sites More sharing options...
Timwheel Posted July 16, 2022 Share Posted July 16, 2022 On 7/4/2022 at 3:15 AM, Wgm said: Switched to V2 control board and it's totally different. Way more easy power. Better medium mode by far. Soft mode now mostly works except at slow speeds. But holy crap I feel for people who tried V1 and don't get a taste of the real master. Its night and day. Its like they were using RS firmware or something and now it's all master. So much power! Also switch was so easy How did you get it ? Thanks Quote Link to comment Share on other sites More sharing options...
Wgm Posted July 16, 2022 Share Posted July 16, 2022 4 hours ago, Timwheel said: How did you get it ? Thanks My seller on Ali Express shipped it to me. You can buy it on there. My wheel flashed when turned off so they shipped me a replacement. Quote Link to comment Share on other sites More sharing options...
techyiam Posted July 16, 2022 Share Posted July 16, 2022 51 minutes ago, Wgm said: My seller on Ali Express shipped it to me. You can buy it on there. My wheel flashed when turned off so they shipped me a replacement. If you don't mind, which seller did you go with on Ali Express? Thanks. Quote Link to comment Share on other sites More sharing options...
Wgm Posted July 17, 2022 Share Posted July 17, 2022 43 minutes ago, techyiam said: If you don't mind, which seller did you go with on Ali Express? Thanks. Wheel Riders Store was fantastic customer service. The master went down in price after I bought and they gave me a partial refund. 1 1 1 Quote Link to comment Share on other sites More sharing options...
fbhb Posted July 17, 2022 Share Posted July 17, 2022 (edited) 5 hours ago, Wgm said: Wheel Riders Store was fantastic customer service I too can vouch for Wheel Riders Store for excellent after sales service, after they arranged a replacement control board and charger for my Sherman on 2 separate occasions, due to 2 faulty genuine Veteran chargers blowing the charge circuit on the 2 boards! I Fully recommend Wheel Rides Store to those that are afraid of purchasing a wheel from Ali Express sellers, especially if like me, you Do Not always have the wheel you are interested in available locally (ONLY have Roll.NZ as our sole EUC distributor)(and do Not treat it as purely a cost saving exercise)! Edited July 17, 2022 by fbhb 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Whalesmash Posted July 17, 2022 Popular Post Share Posted July 17, 2022 (edited) For my fellow gen 1 master owners that did not receive a foam "bottom out" block that begode has recently started to include with their newer masters, this is for you. Beware that there is a screw that protrudes from the bottom of the motherboard tray (see pictured red circle) that can make contact with the top of the suspension slider under a hard bottom out condition. The O-rings that go on the suspension rods only compress by maybe 2-3mm before the slider smacks into the screw head. I don't have much other than speculation to back up any damages from this sort of impact, but common sense would say that all that force concentrated into a single screw head seems like a dumb idea. It doesn't help that the area is right where the power distribution board is. I'll let you all theorize on what repeatedly smacking that screw could potentially do to that board or any of the other electronics I decided to test begode's "foam block" solution by putting two 10mm thick rectangles of EVA foam (blue circle) on top of the slider before deliberately underfilling my shock and curb hopping a few times. It's actually quite effective in preventing that nasty clonk that you would otherwise get in a bottom-out situation. With my shock properly filled, I surprisingly didn't notice that there was any difference in having the foam there. I would have thought that the compression of the foam would have been a bit jarring considering EVA foam is pretty dense. That being said, I am running an aftermarket fox shock with a volume reducer so the compression is very progressive by the time it reaches the foam so I am hardly loosing any travel to begin with. I suspect the transition would be more jarring for those who have no compression dampening (IE stock suspension). Under maximum compression, 20mm of EVA foam can probably compress down to about 5-6mm so this shouldn't really cut into effective travel very much, but in this application, the foam probably compresses a maximum of 10mm, so there may be a little bit of loss in effective suspension travel. I doubt most would notice a few mm. To the very least, this doesn't seem to impact the functionality of the suspension, and at best, it's a means to better protect your electronics from mechanical shock. Edit: For those wondering, yes, the aftermarket shock basically solves the bottom out issues, but I was still able to get a small clonk when I did a 2 foot drop off of a loading dock. I probably don't need the foam for 99% of riding, but piece of mind goes a long way. Edited July 17, 2022 by Whalesmash 6 2 Quote Link to comment Share on other sites More sharing options...
Popular Post FlyboyEUC Posted July 17, 2022 Popular Post Share Posted July 17, 2022 19 minutes ago, Whalesmash said: foam block I did the same thing! 2 1 2 Quote Link to comment Share on other sites More sharing options...
EMA Posted July 17, 2022 Share Posted July 17, 2022 i've done the same too 1 Quote Link to comment Share on other sites More sharing options...
Konst Posted July 17, 2022 Share Posted July 17, 2022 9 hours ago, Whalesmash said: What tire is this? Looks great as all around to me. Quote Link to comment Share on other sites More sharing options...
Rawnei Posted July 17, 2022 Share Posted July 17, 2022 44 minutes ago, Konst said: What tire is this? Looks great as all around to me. Looks like a Shinko 244 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.