Page 2126 of 2623 FirstFirst ... 1126162620262076211621242125212621272128213621762226 ... LastLast
Results 31,876 to 31,890 of 39335

Thread: ESE's works engine tuner

  1. #31876
    Join Date
    20th January 2010 - 14:41
    Bike
    husaberg
    Location
    The Wild Wild West
    Posts
    11,817
    Quote Originally Posted by lohring View Post
    Website under construction, no phone, no reply to email; I think they are not in business. I've checked out several other small two stroke throttle body injection systems as well. So far, no luck. I suspect they don't offer enough advantage over carbs and are higher cost.

    The small IC engines are also in danger of being replaced with battery electric systems. That's pretty much happened in the under 15 cc model engine area and is creeping into even larger sizes as battery costs and weights go down. We'll see what happens with larger, low weight, high power applications.

    Lohring Miller
    Battery weight stays the same regardless of charge where as fuel weight diminishes as fuel load decreases thus increasing range and performance.
    Electric for planes doesn't make sense a lot of sense. unless you are talking servicing costs.

    He had a lot of publicity. Shame.
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  2. #31877
    Join Date
    13th February 2016 - 09:21
    Bike
    None
    Location
    Holland
    Posts
    44
    Quote Originally Posted by TZ350 View Post
    Attachment 341902

    My first efforts with an Op Amp were a bust. It took me a while to find out that an OP Amp has limitations. It is unable to completely swing to the extremes of the supply voltage. So a 0 to 5 Volt power supply is not good enough for a 0 to 5 Volt analog output. To get a zero Volt signal out you need a negative supply rail to the OP Amp.
    Sounds like LM741. Try something like LM224. Single supply, nearly full swing. Full does not exist.

    Trimpots for understanding amplification.
    Study RC filters for frequency response.
    And then: noise, what spoils it all.

    Analog, when you thought you knew it all. Not.

  3. #31878
    Join Date
    18th May 2007 - 20:23
    Bike
    RG50 and 76 Suzuki GP125 Buckets
    Location
    Auckland
    Posts
    10,473
    Click image for larger version. 

Name:	20190519_093935.jpg 
Views:	91 
Size:	841.5 KB 
ID:	341908Click image for larger version. 

Name:	Peter Lehay IoM 68.jpg 
Views:	97 
Size:	206.1 KB 
ID:	341909 160 mph in full flight down the hill and drum brakes, check out those battered and un muffled expansion chambers.

    Team ESE was Bucket racing at Hampton Downs last Sunday where I meet up with Peter who was racing his FXR150. He rode air cooled Yamaha's at the IoM in the late 60's.

    Maybe at only 160 mph down the hill the bikes were not quite as fast as the latest 200 mph super bikes of today but the pilots were just as brave. Real brave men who rode the flexi fliers back in the day and pushed them to their limits just like todays road warriors do. Back in the day they were getting them airborne over Ballaugh Bridge too. https://youtu.be/rpVABjI9-3w


  4. #31879
    Join Date
    18th May 2007 - 20:23
    Bike
    RG50 and 76 Suzuki GP125 Buckets
    Location
    Auckland
    Posts
    10,473
    Quote Originally Posted by Carel H View Post
    Sounds like LM741. Try something like LM224. Single supply, nearly full swing. Full does not exist.

    Trimpots for understanding amplification.
    Study RC filters for frequency response.
    And then: noise, what spoils it all.

    Analog, when you thought you knew it all. Not.
    Yes LM741, thanks for the heads up about LM224's and the suggested study. Being a newbee to this electronics stuff the suggestions are very helpful.

  5. #31880
    Join Date
    1st May 2016 - 13:54
    Bike
    Vintage 2T
    Location
    Brisbane
    Posts
    430
    Quote Originally Posted by TZ350 View Post
    This is Buckets, you take a simple idea like EFI, leap in boots and all, find out how complicated it is to implement then learn a shit load along the way trying to make it work....... .... Love It.
    We Love that you Love it TZ. Your intelligent & persistent dedication and selfless sharing of your project is inspirational.

    cheers, Daryl.

  6. #31881
    Join Date
    20th January 2010 - 14:41
    Bike
    husaberg
    Location
    The Wild Wild West
    Posts
    11,817
    Can someone post the stud spacings on a RGV 250

    I have a feeling its 90mm front and rear and 85mm between
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  7. #31882
    Join Date
    28th August 2015 - 00:01
    Bike
    1975 Hodaka Wombat
    Location
    Eugene, Oregon, USA
    Posts
    302
    Quote Originally Posted by husaberg View Post
    Battery weight stays the same regardless of charge where as fuel weight diminishes as fuel load decreases thus increasing range and performance.
    Electric for planes doesn't make sense a lot of sense. unless you are talking servicing costs.

    He had a lot of publicity. Shame.
    I'm talking about model boats and airplanes. My conversions don't weigh much more than the IC versions, but have considerably more power. I agree about full size planes that need to have significant flight time. However, electric trainers have enough endurance for that job and cost a lot less to operate.

    Lohring Miller

  8. #31883
    Join Date
    7th October 2015 - 07:49
    Bike
    honda ns 400
    Location
    Lithuania
    Posts
    469
    Quote Originally Posted by husaberg View Post
    Can someone post the stud spacings on a RGV 250

    I have a feeling its 90mm front and rear and 85mm between
    Hi,

    Yes, 90mm at front and at rear, but 82mm between.

  9. #31884
    Join Date
    2nd March 2013 - 15:04
    Bike
    CBX125F NS50F NS90F NS-1
    Location
    Lower Hutt
    Posts
    432
    Quote Originally Posted by tz350 View Post
    team ese was bucket racing at hampton downs last sunday where i meet up with peter who was racing his fxr150. He rode air cooled yamaha's at the iom in the late 60's.
    mgp 1969, tt 1970.

  10. #31885
    Join Date
    28th November 2013 - 21:58
    Bike
    Dawes Jaguar
    Location
    UK
    Posts
    435
    Don't know if it will work in NZ, but there's nearly ten hours of video from last week's NW200. No 2 strokes, though, sadly...

    https://www.bbc.co.uk/sport/live/nor...eland/48187693

  11. #31886
    Join Date
    18th May 2007 - 20:23
    Bike
    RG50 and 76 Suzuki GP125 Buckets
    Location
    Auckland
    Posts
    10,473
    Click image for larger version. 

Name:	OP Amp Voltage Follower.jpg 
Views:	34 
Size:	19.0 KB 
ID:	341915

    Got my LM741 Voltage follower Op Amp working. For now I am using two 9V batteries for the + and - Voltages. If it works sorting out the unstable readings from the TPS then I will setup something more permanent with a DC-DC Positive - Negative Voltage converter. One's for Arduino and RaspberryPie's are cheap as chips.

    Click image for larger version. 

Name:	Reverse-Voltage-Module-MC34063.jpg 
Views:	27 
Size:	76.5 KB 
ID:	341916 I have a couple of these tiny reverse voltage modules on order. Just the thing for my job.

    Click image for larger version. 

Name:	HTB1EVWJXcrrK1Rjy1zeq6xalFXaw.jpg 
Views:	34 
Size:	197.4 KB 
ID:	341917 If you need a bit of positive/negative power there is lots of different versions of converters available from AliExpress.

  12. #31887
    Join Date
    18th May 2007 - 20:23
    Bike
    RG50 and 76 Suzuki GP125 Buckets
    Location
    Auckland
    Posts
    10,473
    Click image for larger version. 

Name:	introduction-to-arduino-nano-4-1.jpg 
Views:	46 
Size:	132.5 KB 
ID:	341918 Arduino Nano mini computer.

    People have asked me why I have been positing this electrical/electronics stuff. Well these little computers and their associated devices like realays and PWM servo control and stepper motors means we can do some things much more easily that were not so possible before like:-

    Click image for larger version. 

Name:	Flettner 1.jpg 
Views:	88 
Size:	140.0 KB 
ID:	341919 Flettners idea of changing the rotatory valve timing on the fly.

    Click image for larger version. 

Name:	moving tail.png 
Views:	77 
Size:	22.4 KB 
ID:	341920 Frits's idea of opening the stinger when in over rev to reduce detonation caused by running out of Ex blow down time area.

    Click image for larger version. 

Name:	Butterfly.JPG 
Views:	91 
Size:	405.9 KB 
ID:	341921 My idea of splitting the inlet into two channels and at low rpm closing one side off for better low end torque and carburation.

    https://youtu.be/FeB9O6rtLXQ .... https://youtu.be/ar8YST2TYjQ

    Click image for larger version. 

Name:	Plenum Carb and Air Filter.jpg 
Views:	104 
Size:	283.4 KB 
ID:	341922 The famous plenum idea could be developed to stay in resonance thereby greatly increasing power.

    https://youtu.be/YxiEo8cgopg .... https://youtu.be/p4ef-WUO1Qs

    Click image for larger version. 

Name:	Pressure Bleader 1.jpg 
Views:	123 
Size:	225.1 KB 
ID:	341923 The expansion chamber pressure bleed was very effective at improving low end torque and carburation too.

    These little computer chips and associated bits are so affordable they open up a lot of tuning possibilities and can be run from 12Volts or a small battery.

    On the dyno the split inlet tract and chamber bleed both improved low end torgue and carburation. The plenum chamber was ride able and we took it around the track a few times but the biggest most exciting thing about it was there was a definite torque bulge when the plenum came into resonance. On the dyno the torque bulge was dramatic and if we could keep it in sync with the motor I think we could have something very effective.

    If I get the EFI thing beat then I am coming back to these ideas that have shown real promise and going to incorporate them and have a little Arduino Nano control them all.

  13. #31888
    Join Date
    18th May 2007 - 20:23
    Bike
    RG50 and 76 Suzuki GP125 Buckets
    Location
    Auckland
    Posts
    10,473


    Classic ........



    Crosby ........


  14. #31889
    Join Date
    13th February 2016 - 09:21
    Bike
    None
    Location
    Holland
    Posts
    44
    Quote Originally Posted by TZ350 View Post
    People have asked me why I have been positing this electrical/electronics stuff. .
    They took their time! Everybody hates electronics.

    Another idea: servo controlled needle. Left rocker controls the needle.
    The drawing shows the open and closed positions, so use a little fantasy.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	carb.jpg 
Views:	94 
Size:	31.9 KB 
ID:	341935  

  15. #31890
    Join Date
    20th April 2011 - 08:45
    Bike
    none
    Location
    Raalte, Netherlands
    Posts
    3,340
    Quote Originally Posted by Carel H View Post
    Another idea: servo controlled needle.
    Been there, seen that, built by my mate Martijn Stehouwer (wwwe.emot.nl). Still, I'd prefer to go the whole way: a decent two-stroke injection system.
    Click image for larger version. 

Name:	e13.JPG 
Views:	132 
Size:	44.9 KB 
ID:	341936

Thread Information

Users Browsing this Thread

There are currently 100 users browsing this thread. (0 members and 100 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •