1. Announcement:
    The RULES- Read em and weep.
    Billy Golightly (Always finding new and exciting ways to not give a hoot in hell)
    03-02-2007
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    196,309
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Threads 1 to 50 of 735

Forum: Mad Scientists Lair

This forum is for all hardcore, extremely technical information relating to production and new age trikes. Hybrids, jig construction, high level engine performance, geometry, fabrication, and engineering. Be prepared to get a blast of information that no mortal man can stand. If you can't leave anything stock, or are hungry for highly technical information applicable to trikes this is the forum for you. Igor, fetch me that protractor and metal scribe. "Yes, master!"

  1. Sticky Thread Read This! Forum Purpose.

    Started by Billy Golightly, 03-16-2007 11:41 PM
    • Replies: 2
    • Views: 22,500
    J_Stafford
    05-30-2010, 06:00 PM Go to last post

  1. KX250 Frame for an 86/87 Tecate Build?

    Started by wreckenthusiast, 01-28-2026 11:39 PM
    • Replies: 0
    • Views: 869
    wreckenthusiast
    01-28-2026, 11:39 PM Go to last post

  2. New Pipe for the 250R!

    Started by Red Rider, 05-02-2020 12:51 AM
    2 Pages •
    1 2
    28 Attachment(s)
    • Replies: 29
    • Views: 43,951
    vegas250rr
    12-07-2025, 10:30 PM Go to last post

  3. 200x engine build.

    Started by Shawn Powell, 10-31-2025 09:29 PM
    • Replies: 1
    • Views: 6,027
    Shawn Powell
    11-03-2025, 12:07 AM Go to last post

  4. First Gen Tecate with 87 KX250 Motor Project

    Started by wreckenthusiast, 10-04-2025 11:50 PM
    • Replies: 0
    • Views: 35
    wreckenthusiast
    10-04-2025, 11:50 PM Go to last post

  5. KTX Pro Plastics DONT DO IT!

    Started by Shawn Powell, 09-10-2025 03:06 PM
    • Replies: 0
    • Views: 2,270
    Shawn Powell
    09-10-2025, 03:06 PM Go to last post

  6. 85 250sx final drive machined to work on 1986 bike

    Started by rustyhondas, 04-13-2025 02:35 PM
    • Replies: 0
    • Views: 4,818
    rustyhondas
    04-13-2025, 02:35 PM Go to last post

  7. Exhaust pics atc250r 1st 2nd Gen pipes pics

    Started by Click, 06-28-2024 01:08 PM
    • Replies: 0
    • Views: 26,728
    Click
    06-28-2024, 01:08 PM Go to last post

  8. Cool Independent rear suspension road legal Honda 200m

    Started by SteveTheC, 01-20-2024 01:20 PM
    • Replies: 1
    • Views: 15,647
    ATC King
    01-28-2024, 12:08 AM Go to last post

  9. '84 200x carb slide options...

    Started by rsheehan79, 09-25-2023 06:15 AM
    • Replies: 1
    • Views: 15,550
    atc300r
    09-26-2023, 08:00 PM Go to last post

  10. Valve adjustment issues

    Started by agedatc, 03-31-2021 10:39 PM
    • Replies: 5
    • Views: 20,476
    ATC200X4716
    05-29-2023, 10:00 PM Go to last post

  11. Correct clutch pattern

    Started by Tortuga, 09-22-2022 04:34 PM
    • Replies: 4
    • Views: 17,828
    Tortuga
    09-23-2022, 03:37 PM Go to last post

  12. its that time again, ATC70 BUILD COMING.

    Started by KASEY, 11-24-2021 11:31 PM
    2 Pages •
    1 2
    30 Attachment(s)
    • Replies: 18
    • Views: 34,167
    BOB MARLIN
    04-05-2022, 12:13 PM Go to last post

  13. Turbo ATC200X... Go-Kart

    Started by ARJ0019, 02-09-2021 02:39 AM
    • Replies: 6
    • Views: 21,498
    ps2fixer
    02-12-2022, 04:10 PM Go to last post

  14. ATC Steering Stem Swaps?

    Started by Mr. NeverPlea, 10-30-2021 09:55 PM
    • Replies: 5
    • Views: 19,449
    Dirtcrasher
    02-12-2022, 03:53 PM Go to last post

  15. Hondaline ATC250es Cargo Net

    Started by sp00nfedem1, 01-11-2022 11:33 AM
    • Replies: 0
    • Views: 15,372
    sp00nfedem1
    01-11-2022, 11:33 AM Go to last post

  16. LiIon batteries for our ATC's

    Started by Gabriel, 12-01-2018 12:31 PM
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 20
    • Views: 92,637
    ATC King
    11-09-2021, 10:41 PM Go to last post

  17. brake caliper swaps for 83-85 200x's

    Started by jason85atc250r, 03-17-2007 10:52 PM
    7 Pages •
    1 2 3 4 5 ... 7
    12 Attachment(s)
    • Replies: 94
    • Views: 370,009
    Leevvii
    06-20-2021, 03:23 AM Go to last post

  18. Check Out My Atc500r I Have Some Questions Sweet 500r Please Look

    Started by benm492, 05-07-2009 01:27 AM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 39
    • Views: 56,726
    benm492
    06-03-2021, 10:36 PM Go to last post

  19. Predator Swap

    Started by 200Maniac, 03-13-2021 09:15 AM
    • Replies: 2
    • Views: 18,820
    TrikeKid
    03-24-2021, 11:29 PM Go to last post

  20. Mini-R project

    Started by atc500x, 05-10-2020 11:31 PM
    2 Pages •
    1 2
    17 Attachment(s)
    • Replies: 29
    • Views: 246,946
    atc500x
    02-11-2021, 08:46 AM Go to last post

  21. Poll Poll: New Tri-z clutch covers

    Started by TRITecate350, 02-20-2008 08:03 PM
    3 Pages •
    1 2 3
    • Replies: 32
    • Views: 65,673
    YTZ drew
    01-16-2021, 11:27 PM Go to last post

  22. sand casting/aluminum-projects

    Started by Shep1970, 08-06-2017 09:36 PM
    6 Pages •
    1 2 3 4 5 ... 6
    112 Attachment(s)
    • Replies: 76
    • Views: 274,755
    Shep1970
    09-28-2020, 06:35 PM Go to last post

  23. Best frame for the job

    Started by JK47, 09-07-2020 11:15 AM
    • Replies: 0
    • Views: 15,553
    JK47
    09-07-2020, 11:15 AM Go to last post

  24. 87 200x Clutch Question

    Started by jasong_10, 07-25-2020 10:35 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 35,024
    fieldy
    07-27-2020, 10:33 PM Go to last post

  25. 1983 250r airbox hose

    Started by ATC90JAY, 07-22-2020 09:06 PM
    • Replies: 0
    • Views: 16,210
    ATC90JAY
    07-22-2020, 09:06 PM Go to last post

  26. Locked up 85 atc 70 tranny.

    Started by Russman1986, 05-03-2020 03:39 PM
    • Replies: 2
    • Views: 19,037
    ATC King
    07-15-2020, 08:32 PM Go to last post

  27. What is it ? Help

    Started by jaybird4554, 06-15-2020 07:37 PM
    • Replies: 1
    • Views: 18,887
    oldskool83
    06-15-2020, 07:51 PM Go to last post

  28. Extreme Pipe Repair???

    Started by TheSuperJank, 05-01-2020 12:55 AM
    • Replies: 0
    • Views: 15,587
    TheSuperJank
    05-01-2020, 12:55 AM Go to last post

  29. Best cold starting but no starting when hot and eats plugs

    Started by RickieLee, 04-14-2020 04:14 PM
    • Replies: 2
    • Views: 17,444
    RickieLee
    04-14-2020, 07:39 PM Go to last post

  30. ATC 250R - Wider Footpegs

    Started by Red Rider, 11-03-2010 08:59 PM
    2 Pages •
    1 2
    10 Attachment(s)
    • Replies: 26
    • Views: 60,289
    Red Rider
    04-14-2020, 12:35 AM Go to last post

  31. need help for choose my carb for 84200m with wiseco 10.25 /1

    Started by superjeff97500, 03-25-2020 01:46 PM
    • Replies: 0
    • Views: 17,196
    superjeff97500
    03-25-2020, 01:46 PM Go to last post

  32. 200s Build

    Started by 3wheeler_kid, 03-23-2020 10:24 PM
    • Replies: 2
    • Views: 18,829
    3wheeler_kid
    03-24-2020, 04:42 PM Go to last post

  33. Fat Cat 250sx

    Started by atc500x, 11-29-2009 10:47 PM
    3 Pages •
    1 2 3
    23 Attachment(s)
    • Replies: 40
    • Views: 75,449
    atc500x
    02-02-2020, 09:10 AM Go to last post

  34. How to power valve your Tri-Z

    Started by Derrick Adams, 01-31-2005 09:24 PM
    4 Pages •
    1 2 3 4
    18 Attachment(s)
    • Replies: 50
    • Views: 100,405
    El Camexican
    12-30-2019, 07:15 PM Go to last post

  35. TRX250R Airbox Install on ATC250R

    Started by Red Rider, 02-13-2011 01:51 AM
    2 Pages •
    1 2
    22 Attachment(s)
    • Replies: 16
    • Views: 44,634
    Red Rider
    11-26-2019, 11:27 PM Go to last post

  36. Chain Alignment

    Started by Gabriel, 10-23-2019 10:55 AM
    • Replies: 4
    • Views: 19,714
    NeverLift
    10-23-2019, 03:04 PM Go to last post

  37. External Oil cooler atc185s case?

    Started by Laredo, 10-23-2019 08:59 AM
    • Replies: 2
    • Views: 18,376
    Laredo
    10-23-2019, 10:14 AM Go to last post

  38. New start to the 500 project

    Started by jeffatc250r, 01-11-2007 05:01 PM
    3 Pages •
    1 2 3
    9 Attachment(s)
    • Replies: 31
    • Views: 386,147
    atc300r
    10-22-2019, 01:08 PM Go to last post

  39. 1986 TRX/ATC Expansion Chamber Question

    Started by bauercolton2000, 08-22-2019 02:46 PM
    • Replies: 1
    • Views: 16,993
    Tri-Z 250
    08-23-2019, 10:34 AM Go to last post

  40. Tri-Z 600 conversion - Part 2

    Started by tri dee, 01-03-2008 01:32 PM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 15
    • Views: 49,005
    ATC-Eric
    08-03-2019, 08:38 PM Go to last post

  41. Mini Bike trike

    Started by Gabriel, 07-10-2019 05:07 PM
    • Replies: 0
    • Views: 17,222
    Gabriel
    07-10-2019, 05:07 PM Go to last post

  42. mudproof air intake gen 1 aircooled suggestions?

    Started by OldNo437, 07-02-2019 10:27 AM
    • Replies: 0
    • Views: 16,950
    OldNo437
    07-02-2019, 10:27 AM Go to last post

  43. Project Loose Fillings AKA The Goblin

    Started by Gabriel, 10-01-2018 01:27 PM
    7 Pages •
    1 2 3 4 5 ... 7
    17 Attachment(s)
    • Replies: 93
    • Views: 220,136
    yaegerb
    06-13-2019, 08:09 PM Go to last post

  44. EFI on an ATC??

    Started by Gabriel, 04-30-2019 02:07 PM
    2 Attachment(s)
    • Replies: 11
    • Views: 28,701
    RubberSalt
    05-01-2019, 01:30 PM Go to last post

  45. Single wheel pull conversion.

    Started by Gabriel, 01-22-2019 03:10 PM
    1 Attachment(s)
    • Replies: 10
    • Views: 25,520
    RubberSalt
    05-01-2019, 03:02 AM Go to last post

  46. Honda engine parts interchangeability

    Started by Gabriel, 03-25-2019 02:38 PM
    • Replies: 1
    • Views: 16,958
    RubberSalt
    04-30-2019, 11:34 AM Go to last post

  47. ATC 70 + Powerwheels = electric ATC 70

    Started by ADOR, 11-11-2010 05:39 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 56,429
    Quinc
    04-04-2019, 11:54 AM Go to last post

  48. Suzuki dr350/ atc350x conversion

    Started by nick walke, 01-03-2010 12:45 PM
    3 Pages •
    1 2 3
    58 Attachment(s)
    • Replies: 38
    • Views: 83,872
    HorseMcHorseman
    04-02-2019, 12:02 AM Go to last post

  49. 200cc engine build......

    Started by Gabriel, 02-06-2019 04:13 PM
    • Replies: 5
    • Views: 21,667
    oldskool83
    03-25-2019, 12:41 PM Go to last post

  50. Positive Crankcase Ventilation

    Started by Gabriel, 01-30-2019 11:38 AM
    • Replies: 1
    • Views: 22,471
    big specht
    01-30-2019, 08:56 PM Go to last post
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