Motors on motors for bolt on torque - Building a 13B Rotary BMW i8: EP9

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Комментарии • 104

  • @Lspencergottlieb
    @Lspencergottlieb 5 дней назад +18

    what Belt Driven Starter Generator is that? I have been researching this heavily lately and cannot find out who has solved the CANBUS control issue for these BDSGs and which one to purchase to get this added to my vehicle.

    • @CouchBuilt
      @CouchBuilt  5 дней назад +17

      This is the stock part of the BMW i8 (part number 12317649390). It's going to be controlled through the OEM inverter without any tuning (for now) in my i8. I don't think there are many folks out there reverse engineering CAN control of these. At least in the BMW case, the inverter is on FlexRay which is a non-starter in my opinion with the information and tools available today. If I was doing this on another car, Id probably use the same BMW starter/gen, and run it off a $200 Toyota Prius inverter with a control from OpenInverter. openinverter.org/wiki/Category:Toyota The benefit of using an open source solution like this is that you can put a much more powerful inverter on the motor, then output a bunch more power by riding the temperature limits rather than the conservative, drive 200k miles, OEM tune-up. If someone wanted to go down that road, Id consider contracting the design work.

    • @riccardo1796
      @riccardo1796 5 дней назад +2

      i have a bosch 20kw one on the accessories belt and have found no other solution save for a standalone programmable inverter.

    • @coreyw427
      @coreyw427 3 дня назад

      @@riccardo1796What is the part number of this? Interested in having a look

    • @coreyw427
      @coreyw427 3 дня назад

      @@CouchBuiltDoes the stock inverter not require feedback from the engine controller to operate properly?

    • @CouchBuilt
      @CouchBuilt  3 дня назад

      It does. See earlier control episode

  • @RobDahm
    @RobDahm 4 дня назад +76

    I love this! My brother would beg me to do this to the awd 4 rotor and make the front wheels electric

    • @CouchBuilt
      @CouchBuilt  4 дня назад +18

      Do it! Happy to help make it happen wherever I can 👌🏻

    • @956870733
      @956870733 4 дня назад +1

      If it's lighter than the existing AWD and get a lower CG, and keep the heavy stuff closer to the center of the car, and improve the steering column and rack, I would also say yes.

    • @mikellewis2346
      @mikellewis2346 3 дня назад +1

      Thank the God's for given you the brain's not do such things to the awd 4rotor rx7. 😅😅😅

  • @markusftw5138
    @markusftw5138 5 дней назад +32

    The amount of engineering in this is absolutely nuts.

  • @svgPhoenix
    @svgPhoenix 4 дня назад +21

    Rob Dahm is in the comments and yet only 3k views in 10 hours? Criminal. Keep up the good work dude, this project is insane. You deserve 100x the views

    • @CouchBuilt
      @CouchBuilt  4 дня назад +8

      Thanks! Not here to become a RUclipsr. Just the only platform worth documenting a build these days.

    • @dan1906
      @dan1906 3 дня назад +1

      @@CouchBuilt For someone not trying to be a RUclipsr, you're doing an awfully good job of playing one.

  • @somenygaard
    @somenygaard 3 дня назад +3

    It’s incredible to see how much the world-and especially the automotive enthusiast community-has transformed. I grew up in an era when affordable performance parts were limited to just a few cars and engines, and having the right tools was crucial. Today, those tools have become accessible not only to major manufacturers but also to small businesses and even hobbyists. Now, anyone with the passion and the right equipment can fabricate custom, one-of-a-kind parts, making it truly amazing to watch this evolution unfold.

    • @CouchBuilt
      @CouchBuilt  2 дня назад +1

      Yea funny yo think not that long ago that not wasn’t in a Summit Racing catalog, it was unobtainable for most.

  • @7pathsofpain625
    @7pathsofpain625 4 дня назад +14

    That is such a beautiful sight! The I8 is not an ugly car and you have made this car into a proper supercar! It should have came this way! 😀

  • @m3ll0f3ll0
    @m3ll0f3ll0 3 дня назад

    this deserves much more attention, inspiring stuff

  • @douglasrobertson7765
    @douglasrobertson7765 5 дней назад +11

    NASA cant get to Space ....
    but this guy ..... Holy Moly Sir just BRILLIANT

  • @stodoprojects1654
    @stodoprojects1654 4 дня назад +3

    One thing that could bring you more views, is to add the i8 in the thumbnail, because most people won't realise until reading the whole title what the video is about. And i8 is a very recognizable car so naturily more people will click

  • @max_frga
    @max_frga 5 дней назад +1

    so awesome! definitely one of my favorite builds on youtube right now!

  • @iliketorockrock
    @iliketorockrock 4 дня назад +1

    extremely high quality build. Well done!

  • @jsomething2
    @jsomething2 5 дней назад +6

    such an interesting build.

  • @j.r.986
    @j.r.986 4 дня назад +2

    From a fellow i8 owner, your build is an exciting and super interesting watch! Your engineering and fab skills are awesome, and it’s a real treat watching this come together.
    Also, if you ever manufacture and sell your quick release + display engine covers, you’ve got one guaranteed sale here 😉

  • @mizake01
    @mizake01 3 дня назад

    The future of car habbies has arrived. Wow.

  • @mrspeaky6885
    @mrspeaky6885 5 дней назад +2

    Best Build on RUclips,
    Your Film making skills are improving and i hope you are having fun doing it!

  • @6ftFish
    @6ftFish 4 дня назад

    Looking forward to the custom CAN display, would be great if you could go into detail for people who would like to follow along :) Loving the content!

  • @wutazz8839
    @wutazz8839 4 дня назад +3

    RUclips algorithm give this man some views

  • @mandrakejake
    @mandrakejake 4 дня назад +1

    Just found this build and excited to see how it goes. Mechanically the engine mount you made will likely deform the holes in the frame rail over time. Based on how neat your welding is I'm surprised you didn't replicate the original system tbh.

    • @CouchBuilt
      @CouchBuilt  4 дня назад +1

      This subframe isn’t going in the car, I’m only using it for mockup. Worst case the plate gets welded on the real subframe.

  • @Eduardo_Espinoza
    @Eduardo_Espinoza 2 дня назад

    This is the dream :)
    Thank you for buying e30 parts, I love this exact build, later I would try the GR Yaris engine :)
    Only dislike I have with the video is the music is masks what you're saying when I'm trying to pick up everything that you're putting down, other than that I'm still subscribing! :)

  • @TheBirells
    @TheBirells 4 дня назад

    Keep on grinding! You rock! 🤘🏻

  • @BrewedMotorsports
    @BrewedMotorsports 4 дня назад

    Very much looking forward to
    Seeing this build in action. Usage of 3d printed metal parts has been great! 👍 ❤

  • @gafrers
    @gafrers 4 дня назад

    Fantastic work. Loving this project

  • @PortfolioAutomotive
    @PortfolioAutomotive 5 дней назад +1

    Excellent 🍻 I don’t understand how this isn’t viral yet 😎

  • @xxtrengt8871
    @xxtrengt8871 4 дня назад

    Great job, i really like this build, seing you using send cut send gives me so many ideas for my projects

  • @Cybernetic_Systems
    @Cybernetic_Systems 4 дня назад

    I’m am loving your build, incredible work and I’m in awe of the results!
    PS, I loved the hard rock track in this video, made me want to rock out! 🤘

  • @0003ret
    @0003ret 4 дня назад

    What a cool unique build that I have stumbled on, subbed straight away. Cant wait for more vids to follow this build!

  • @hairconditioner976
    @hairconditioner976 4 дня назад

    crazy build, amazing videos... deserves a lot more views

  • @jasonanderson2876
    @jasonanderson2876 4 дня назад

    Instantly see him rocking the Teckademics👊🏼😎

    • @CouchBuilt
      @CouchBuilt  4 дня назад

      Hello fellow old car enthusiast

  • @CouchBuilt
    @CouchBuilt  5 дней назад +3

    Ackshually, the motor is technically an ac synchronous, not ac induction. Failed to catch that misclassification during editing.

    • @riccardo1796
      @riccardo1796 4 дня назад

      As in a bldc or an actual synchronous reluctance one?
      Because if the latter, good luck with getting it to work with off the shelf controllers

    • @CouchBuilt
      @CouchBuilt  4 дня назад

      Synchronous pm deal. The FOC open inverter firmware controls them without issue. A bit more of a tuning curve up front but the process is decently documented, particularly the Leaf motor.

    • @riccardo1796
      @riccardo1796 4 дня назад

      @@CouchBuilt nice
      Yeah, FOC for PMSMs is very mature at this point

  • @thijseurlings1988
    @thijseurlings1988 4 дня назад

    You are just a hero! What great content you are creating! Only the hard music could be a bit less

  • @joel8230
    @joel8230 4 дня назад

    This is an awesome project!!! Can’t wait for the next episode :D

  • @ReinaldoGonzalezreix2x
    @ReinaldoGonzalezreix2x 5 дней назад

    Nice and constant work on one of the must exiting build out there. Congrats!

    • @CouchBuilt
      @CouchBuilt  5 дней назад

      Thanks! Gotta keep moving ahead with how many things are left to do.

  • @nathanaeljonesmyfsd
    @nathanaeljonesmyfsd 4 дня назад

    Love it. Bad Obsession Motorsport with computers.

  • @pulex73
    @pulex73 5 дней назад

    If you ever want to come to Europe and test the car at the Nordschleife I will support you as much I can :)
    Nice intro and I really like the music + speed of talking!

  • @KurtAndresKA
    @KurtAndresKA 5 дней назад

    Jeeez that welds, you nailed it

  • @alexmyers4934
    @alexmyers4934 5 дней назад +1

    Looking good mate, not long to go

    • @CouchBuilt
      @CouchBuilt  5 дней назад

      It might appear that way, but loads to go.

  • @AllSpeed
    @AllSpeed 3 дня назад

    been so long since ive heard this song!

  • @philipandress1839
    @philipandress1839 5 дней назад

    Such an inspiration! I'm building a mid engine k100 powered Ford Festiva that I hope to make hybrid some day, but I'm not nearly at your quality level yet!

  • @tommymaddox6785
    @tommymaddox6785 4 дня назад

    Just my $0.02, consider changing trans mount design to keep a bracket attached to the trans case, those aluminum threaded holes love to strip if you have a lot of install/reinstall going on as you get everything finalized and situated.

    • @CouchBuilt
      @CouchBuilt  4 дня назад +1

      The mount doesn’t need to come on/off for much. It could probably stay where it is through final assy. I usually install studs in aluminum stuff that needs regular service.

  • @KARR
    @KARR 4 дня назад

    over the top very cool build

  • @sophiatheodores7985
    @sophiatheodores7985 5 дней назад

    damn dude you're on another level

  • @cocoanton
    @cocoanton 5 дней назад

    Wow... just wow!

  • @dan1906
    @dan1906 3 дня назад

    I'm only here because your Einstar review was recommended after some looking earlier. Now, I am staying for this remarkable, and quite frankly unique build.
    Any more info you care to share on that exhaust featured in that Einstar video? More sound clips, perhaps.

  • @jdmimportlogistics
    @jdmimportlogistics 4 дня назад

    ??? So sick!!! Just hit Fuji for Mazda Fan Day hit me up if you want to go in the future

  • @AaronONeal1
    @AaronONeal1 Час назад

    Because sometimes I have problems following the entire flowchart, am I correct in thinking you are using the starter generator to add power into the crank rather than the an electric motor at the wheels? I presume this is all just to adapt the SG to the 13B in order to use it with the factory components? Thanks

  • @yucannthahvitt251
    @yucannthahvitt251 4 дня назад +1

    Love your vids and admire your skills man, but the music was far too loud in this mix. My personal preference is no music when people are talking but I get others are different, but it's objectively too loud.

    • @CouchBuilt
      @CouchBuilt  4 дня назад +1

      Thanks for the feedback. Audio is the hardest part about all this stuff.

  • @KH-wp3lj
    @KH-wp3lj 4 дня назад

    this is fucking wicked

  • @drgibs347
    @drgibs347 3 дня назад

    Motors on Engines** motors do not burn fuel, Engines do.

    • @CouchBuilt
      @CouchBuilt  3 дня назад

      The English language diagrees.
      www.merriam-webster.com/dictionary/motor

  • @malanne1
    @malanne1 4 дня назад

    Were you planning to build more or a kit for I8's? I would love to buy one just to do this. My dream is a mid engine and rotary, this seems to be the ultimate build! Good luck!

    • @CouchBuilt
      @CouchBuilt  3 дня назад

      If this all works, we’ll see.

  • @AlphaEngineer2022
    @AlphaEngineer2022 2 дня назад

    that's awesome! is there anywhere I could download the 13b model files? id love to shrink it down and have one sitting on my desktop! :)

  • @E36Variance
    @E36Variance 4 дня назад

    I'm rather concerned by the lack of clearance between the downpipe and the transmission case; what are your plans for insulation?
    In-industry, we traditionally do a multi-layer metal heatshield with air gaps on both sides, but obviously you don't have enough room for that. Maybe it's just an optical illusion from the combination of shadows and the footage being slightly-out-of-focus, but it looks like you hardly even have clearance to wrap the pipe.
    When designing the pipe, did you consider locally ovalizing the cross-section between the v-band and the O2 sensor to gain more clearance? I imagine it would be a lot easier to achieve that with a 3D-printed part vs. if you had to try to fabricate it out of round tubing.

    • @CouchBuilt
      @CouchBuilt  4 дня назад

      It’ll have an inconel heat shield. It’s also not rotated to its correct position.

  • @layneagain310
    @layneagain310 4 дня назад

    Where are you sourcing those large rubber motor mounts from?
    This build is nutty

    • @CouchBuilt
      @CouchBuilt  3 дня назад

      Pn 11811132321 at FCPEuro. $8.29

  • @user0055
    @user0055 4 дня назад

    Whoa Teckademics! It looks new-ish too. Please explain what is going on

    • @CouchBuilt
      @CouchBuilt  4 дня назад +1

      Dustin did a recent run. Grabbed one before they sold out pretty much instantly. It was posted on IG.

    • @user0055
      @user0055 4 дня назад

      @@CouchBuilt wow, I had no idea they were still around

  • @topherlikescandy
    @topherlikescandy 5 дней назад

    gr8te stuff

  • @liamf3647
    @liamf3647 День назад

    Do you have any extra support for the front of the eccentric shaft? 13Bs don't like high shear loads on the front pulley and will eat up the front bearing very fast. There are a couple solutions out there though from people that have supercharged them

    • @CouchBuilt
      @CouchBuilt  День назад

      E&J ball bearings front and rear

  • @mingscustoms
    @mingscustoms 5 дней назад +1

    Would you be willing to provide your 13b 3d model? I would like to print one myself for mockups

    • @CouchBuilt
      @CouchBuilt  5 дней назад

      Mitch Abbott on IG sells the models. Each main part fits onto a creality CR10, although a bed slinger printer is a terrible choice for such a big mass. instagram.com/mitchabbott_?igsh=Nmd3Zmg3eng2Z3N5

  • @mwendell
    @mwendell 5 дней назад

    So how did you source a complete i8 rear subframe to work on this?

    • @CouchBuilt
      @CouchBuilt  5 дней назад +1

      eBay, for less than $500 shipped!

  • @TravisFabel
    @TravisFabel 5 дней назад +1

    Polyurathane bushings dont suck on a street car... Overly stiff poly bushings stuck.. and most aftermarket ones are overly stiff. Some from being too high of a durometer, others are a fine durometer but made solid in a situation where there should be holes to give.
    In otherwords, as a material, its superior... but due to the poor engineering of the aftermarket, it has a bad rap. OE generally doesnt use it because of cost & tradition...

    • @CouchBuilt
      @CouchBuilt  5 дней назад +2

      Yea most aftermarket offerings are too stiff. If you choose a softer durometer, there’s likely marginal improvements over fresh OEM rubber. Arguably perhaps get some better longevity. My comment is mostly around RWD style mounts. FWD stuff with open cavities in the rubber definitely benefit from poly inserts.

  • @kz6fittycent
    @kz6fittycent 5 дней назад

    How’d you get away with playing STP!?

    • @CouchBuilt
      @CouchBuilt  5 дней назад +1

      One time use music licenses are a thing! The subscription I started using includes one per month. Additional are only ~$8 per use. LICKD music is what I used.

    • @kz6fittycent
      @kz6fittycent 5 дней назад

      @@CouchBuilt well that’s pretty cool! I had no idea that was a thing.

    • @CouchBuilt
      @CouchBuilt  5 дней назад

      Neither did I until @CrucibleCoachworks dropped a few breadcrumbs on the topic.

  • @mikexkennedy
    @mikexkennedy 5 дней назад

    NGL the safety sandals when using the engine stand and jack had me fearful of your toes.

    • @CouchBuilt
      @CouchBuilt  5 дней назад +3

      I adhere to strict OSHA standards.

  • @nswgb69
    @nswgb69 5 дней назад +1

    First

  • @1pkfirst
    @1pkfirst 4 дня назад

    work top, music🤮

  • @subdynoman
    @subdynoman 3 дня назад

    I tried a hybrid bolted to a 13B in a 64 VW check me out 13Brotarybug...wish my life wasnt such a mess 😢