Harold Farrenkopf Posted June 16, 2019 Share Posted June 16, 2019 This fault was a human error/carelessness in the assembling of the wheel. The use of that style case for the mosfet can be debated but as long as it’s current rating and heat dissipation methods are adequate then it shouldn’t be an issue. The fan should be flowing air over the finned part of the heat sink though but maybe there is some heat generated on the board that they needed to dissipate more than just the board without airflow. As an owner of a V10F, I sure wish these wheel designers would take a course on heat dissipation theory and practice. Aluminum is not that heavy to use more of it including some unique extrusions and machining designs to get the heat outside of the wheel while maintaining water protection. 2 1 Quote Link to comment Share on other sites More sharing options...
US69 Posted June 16, 2019 Share Posted June 16, 2019 9 hours ago, esaj said: The paralleled (12 mosfet) setups have been criticized by power electronics designers before, saying that a single larger package and/or better rated mosfet should be used instead. Likely it's all about the $$$, cheaper to add a couple of smaller and/or poorer rated mosfets than one larger and/or with better specs. Thanks for bringing this up again...something i -normally- also mention each time! Doubling a weak electronic component is just totally nonsense. especiall if The right/better/larger ones are available.... No need at all to have 12 MOS on board.....6 would do it easily, too...which btw GW prooved themself...on the MCM 5 board. 1 1 Quote Link to comment Share on other sites More sharing options...
Popular Post maltocs Posted June 16, 2019 Popular Post Share Posted June 16, 2019 2 hours ago, Harold Farrenkopf said: As an owner of a V10F, I sure wish these wheel designers would take a course on heat dissipation theory and practice. I keep thinking about my decision to buy a V10F last year as my first real wheel. It was because of it's reliability record. At the time, i was willing to trade off performance for a wheel that had a much smaller percentage of failure. I didn't want to be tethered to my app monitoring potential cut-out and failure. And true to form, I can tell you my V10F will not fail. I've taken it up a hill in palm springs when it was 115F outside in the shade (and I was NOT in the shade) and you guys know how many times it kicks me off with her voice telling me "OVERLOAD, PLEASE GET OFF." I'm glad I NEVER have to worry about it failing, but I'm always babying it playing a game to NOT get it to overload when on hills. When I got the MCM5 which IS capable of failure due to it being a GOTWAY, I hardly EVER ride the Inmotion anymore unless I know I"m just cruising on flats. I love the performance and its ability to bring me up hills. Now if i was a speed demon, I'd be worried about cut-outs at high speeds, but I only need the power for hill climbing and I'm never usually going faster than 15mph going up those hills. Oh yeah, I almost forgot my thought. In the end, I'm willing to give up the reliability and safety of an Inmotion or KS for the performance of a Gotway. Ask me again after my first MOSFET blow out. 6 1 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted June 16, 2019 Author Share Posted June 16, 2019 (edited) 37 minutes ago, maltocs said: I keep thinking about my decision to buy a V10F last year as my first real wheel. It was because of it's reliability record. At the time, i was willing to trade off performance for a wheel that had a much smaller percentage of failure. I didn't want to be tethered to my app monitoring potential cut-out and failure. And true to form, I can tell you my V10F will not fail. I've taken it up a hill in palm springs when it was 115F outside in the shade (and I was NOT in the shade) and you guys know how many times it kicks me off with her voice telling me "OVERLOAD, PLEASE GET OFF." I'm glad I NEVER have to worry about it failing, but I'm always babying it playing a game to NOT get it to overload when on hills. When I got the MCM5 which IS capable of failure due to it being a GOTWAY, I hardly EVER ride the Inmotion anymore unless I know I"m just cruising on flats. I love the performance and its ability to bring me up hills. Now if i was a speed demon, I'd be worried about cut-outs at high speeds, but I only need the power for hill climbing and I'm never usually going faster than 15mph going up those hills. Oh yeah, I almost forgot my thought. In the end, I'm willing to give up the reliability and safety of an Inmotion or KS for the performance of a Gotway. Ask me again after my first MOSFET blow out. Nice commentary. I know I probably sound crazy still recommending the Nikola, but I can't help myself. Someone (a Russian I think - they usually have good wheel intel) said they just heard that Gotway is putting the MSX board in the Nikola. If true, then the Nikola might be the wheel for you because I can tell you that it has superb torque for pulling you up a hill. Edited June 16, 2019 by Marty Backe 2 1 Quote Link to comment Share on other sites More sharing options...
Dzlchef Posted June 16, 2019 Share Posted June 16, 2019 I really enjoy my KS16S so definitely wasn't a Gotway person but the Nikola is just simply amazing to ride. I love it more each time that I ride it. Carving this morning was effortless and I'm sure that I had the biggest grin on my face. 2 Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 16, 2019 Share Posted June 16, 2019 6 minutes ago, Marty Backe said: Someone (a Russian I think - they usually have good wheel intel) said they just heard that Gotway is putting the MSX board in the Nikola. Please be true! They should have done that from the beginning. Maybe the 100V Nikola Plus board is just the MSX board. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post maltocs Posted June 16, 2019 Popular Post Share Posted June 16, 2019 11 minutes ago, Marty Backe said: Nice commentary. I know I probably sound crazy still recommending the Nikola, but I can't help myself. Someone (a Russian I think - they usually have good wheel intel) said they just heard that Gotway is putting the MSX board in the Nikola. If true, then the Nikola might be the wheel for you because I can tell you that it has superb torque for pulling you up a hill. I guess I'll let you know by the end of the month if this is true. I'm taking a gamble here in the interest of wanting this wheel ASAP. First wheel not from ewheels. 8 2 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted June 16, 2019 Author Share Posted June 16, 2019 8 minutes ago, maltocs said: I guess I'll let you know by the end of the month if this is true. I'm taking a gamble here in the interest of wanting this wheel ASAP. First wheel not from ewheels. Bastard Congrat's I really think you're going to love everything about the Nikola ride. And I feel much better now knowing that my failure was due to workmanship. What was the delivered price? 2 Quote Link to comment Share on other sites More sharing options...
maltocs Posted June 16, 2019 Share Posted June 16, 2019 (edited) 11 minutes ago, Marty Backe said: Congrat's I really think you're going to love everything about the Nikola ride. And I feel much better now knowing that my failure was due to workmanship. What was the delivered price? I bought it when it was $2400 with a $20 coupon so $2380. Its my first aliexpress purchase. Now i realize how much prices fluctuate.It shows $2336 right now on the link, but when i click on it, it is $2368 but sales starts in 10 hours. https://www.aliexpress.com/item/33031022213.html?spm=2114.search0604.3.1.44d8324ecJsAbD&ws_ab_test=searchweb0_0%2Csearchweb201602_6_10065_10130_10068_10547_319_10546_317_10548_10545_10696_10084_453_454_10083_10618_10307_537_536_10059_10884_10887_321_322_10103%2Csearchweb201603_52%2CppcSwitch_0&algo_expid=b4b3794f-feeb-4aa5-8394-5c6adacad07a-0&algo_pvid=b4b3794f-feeb-4aa5-8394-5c6adacad07a&transAbTest=ae803_5 Edited June 16, 2019 by maltocs 1 Quote Link to comment Share on other sites More sharing options...
Rywokast Posted June 16, 2019 Share Posted June 16, 2019 8 minutes ago, maltocs said: I bought it when it was $2400 with a $20 coupon so $2380. Its my first aliexpress purchase. Now i realize how much prices fluctuate.It shows $2336 right now on the link, but when i click on it, it is $2368 but sales starts in 10 hours. https://www.aliexpress.com/item/33031022213.html?spm=2114.search0604.3.1.44d8324ecJsAbD&ws_ab_test=searchweb0_0%2Csearchweb201602_6_10065_10130_10068_10547_319_10546_317_10548_10545_10696_10084_453_454_10083_10618_10307_537_536_10059_10884_10887_321_322_10103%2Csearchweb201603_52%2CppcSwitch_0&algo_expid=b4b3794f-feeb-4aa5-8394-5c6adacad07a-0&algo_pvid=b4b3794f-feeb-4aa5-8394-5c6adacad07a&transAbTest=ae803_5 should have bought it with the app.. its cheaper and you can still use the coupons as well Quote Link to comment Share on other sites More sharing options...
maltocs Posted June 16, 2019 Share Posted June 16, 2019 4 minutes ago, Rywokast said: should have bought it with the app.. its cheaper and you can still use the coupons as well really? damn. well, now i know :(. Rookie mistake. Quote Link to comment Share on other sites More sharing options...
Rywokast Posted June 16, 2019 Share Posted June 16, 2019 3 minutes ago, maltocs said: really? damn. well, now i know :(. Rookie mistake. yup think you save like 30 bucks 1 Quote Link to comment Share on other sites More sharing options...
Dzlchef Posted June 16, 2019 Share Posted June 16, 2019 1 hour ago, maltocs said: I guess I'll let you know by the end of the month if this is true. I'm taking a gamble here in the interest of wanting this wheel ASAP. First wheel not from ewheels. Nice!!! Think you'll definitely enjoy the wheel. I'm a little jealous of the all black but not enough to have waited. 1 Quote Link to comment Share on other sites More sharing options...
Bob Eisenman Posted June 16, 2019 Share Posted June 16, 2019 1 hour ago, Marty Backe said: MSX board in the Nikola Wow...bad tumble...hope the insta360 (and rider) are ok. The MSX mosfet on the Nikola board was referenced earlier in this topic. 1 1 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted June 16, 2019 Author Share Posted June 16, 2019 3 minutes ago, Bob Eisenman said: Wow...bad tumble...hope the insta360 (and rider) are ok. The MSX mosfet on the Nikola board was referenced earlier in this topic. Frankly, this guy doesn't know what he's talking about. Other people have made the same observation of this guy. IMO. 2 Quote Link to comment Share on other sites More sharing options...
Bob Eisenman Posted June 16, 2019 Share Posted June 16, 2019 (edited) @Marty Backehow about a doit yourself external compressed gas (CO2? or N2 would be inert) source (requires heat to expand into the gas phase) leaked into the main board space ? or A thermoelectric Peltier cooling contraption of some sort attached to the heat sink plus MSX mosfets🤔 Edited June 17, 2019 by Bob Eisenman 1 1 Quote Link to comment Share on other sites More sharing options...
Lukas83 Posted June 16, 2019 Share Posted June 16, 2019 when I remember right in the msx is to247 not 227,correct? 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Harold Farrenkopf Posted June 16, 2019 Popular Post Share Posted June 16, 2019 1 minute ago, Bob Eisenman said: @Marty Backehow about a doit yourself external compressed gas (CO2?) source (requires heat to expand into the gas phase) leaked into the main board space ? or A piezo electric cooling contraption of some sort attached to the heat sink plus MSX mosfets🤔 Just use a heat pipe connected to the heat sink and connect it to larger heat sinks outside that area. 2 2 Quote Link to comment Share on other sites More sharing options...
Harold Farrenkopf Posted June 16, 2019 Share Posted June 16, 2019 @Marty Backe, this Nikola looks like a V10f in shape but fatter and much more battery capacity and a headlight that is aimed better. How would you compare them riding wise if the V10F didn’t overheat on the hill or have poorly designed pedals that break? Quote Link to comment Share on other sites More sharing options...
Bob Eisenman Posted June 16, 2019 Share Posted June 16, 2019 (edited) 1 hour ago, Harold Farrenkopf said: Just use a heat pipe connected to the heat sink and connect it to larger heat sinks outside that area. What caused makers of computer CPUs to introduce water cooled cpu rigs for an electronic environment? https://www.bestbuy.com/site/corsair-hydro-series-120mm-liquid-cooling-system-black/5845215.p?skuId=5845215&ref=212&loc=1&extStoreId=533&ref=212&loc=1&gclsrc=aw.ds&ds_rl=1260666&ds_rl=1266837&gclid=CjwKCAjw0ZfoBRB4EiwASUMdYfMXLOadRtiMbDsDfuM04qDxRsf-vLg5Zf17wDvQUQbP2Z2mJFXN1hoCPHYQAvD_BwE Edited June 16, 2019 by Bob Eisenman Quote Link to comment Share on other sites More sharing options...
maltocs Posted June 16, 2019 Share Posted June 16, 2019 48 minutes ago, Harold Farrenkopf said: @Marty Backe, this Nikola looks like a V10f in shape but fatter and much more battery capacity and a headlight that is aimed better. How would you compare them riding wise if the V10F didn’t overheat on the hill or have poorly designed pedals that break? @Marty Backe doesn't own a V10F. He just used tester unit for his evaluation. It's the one wheel he doesn't own! But he's more than welcome to borrow mine as it gets about an hour of use every month just to make sure it still works. 1 Quote Link to comment Share on other sites More sharing options...
Bob Eisenman Posted June 16, 2019 Share Posted June 16, 2019 @Marty BackeI was asked to teach high school physics for a few years when I was a private school instructor. I had all the Newtonian physics fresh in mind. One day when the space shuttle launched I had a TV in the classroom just to witness the event. The shuttle blew up with Christa McAuliffe on board. It was awkward standing in front of a class of students who were equally shocked. https://en.m.wikipedia.org/wiki/Christa_McAuliffe A few years later , after the O ring issue was fixed, I took a trip to the Kennedy Space Center as a tourist. 1 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted June 16, 2019 Author Share Posted June 16, 2019 1 hour ago, Harold Farrenkopf said: @Marty Backe, this Nikola looks like a V10f in shape but fatter and much more battery capacity and a headlight that is aimed better. How would you compare them riding wise if the V10F didn’t overheat on the hill or have poorly designed pedals that break? The V10F rides like a smaller wheel (which it is), so it feels a bit less stable then the Nikola. Also, the V10F has a higher center-of-gravity which is less than ideal. This is not to say that the V10F isn't a great ride, but I prefer the Nikola to essentially every wheel I own. 1 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted June 16, 2019 Author Share Posted June 16, 2019 9 minutes ago, maltocs said: @Marty Backe doesn't own a V10F. He just used tester unit for his evaluation. It's the one wheel he doesn't own! But he's more than welcome to borrow mine as it gets about an hour of use every month just to make sure it still works. Thanks for the offer @maltocs , but I have much less riding time than some folks so I have to be picky where I spend my time. I was just riding my Tesla today which is probably closest to the V10F experience, except it's fast and doesn't overheat 1 Quote Link to comment Share on other sites More sharing options...
maltocs Posted June 16, 2019 Share Posted June 16, 2019 (edited) 3 hours ago, Marty Backe said: Bastard Thanks for being an early adopter buying and testing the wheels so i can buy the BETTER one (MCM5 800W and now Nikola PLUS) 14 minutes ago, Marty Backe said: Thanks for the offer @maltocs , but I have much less riding time than some folks so I have to be picky where I spend my time. I was just riding my Tesla today which is probably closest to the V10F experience, except it's fast and doesn't overheat I was just being nice because I thought you were feeling inadequate with a gazillion MINUS one wheel. Edited June 16, 2019 by maltocs 1 1 Quote Link to comment Share on other sites More sharing options...
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