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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    194,104
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Threads 1 to 50 of 734

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: 22,315
    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: 681
    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: 41,983
    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: 5,922
    Shawn Powell
    11-03-2025, 12:07 AM Go to last post

  4. KTX Pro Plastics DONT DO IT!

    Started by Shawn Powell, 09-10-2025 03:06 PM
    • Replies: 0
    • Views: 2,196
    Shawn Powell
    09-10-2025, 03:06 PM Go to last post

  5. 85 250sx final drive machined to work on 1986 bike

    Started by rustyhondas, 04-13-2025 02:35 PM
    • Replies: 0
    • Views: 4,750
    rustyhondas
    04-13-2025, 02:35 PM Go to last post

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

    Started by Click, 06-28-2024 01:08 PM
    • Replies: 0
    • Views: 26,514
    Click
    06-28-2024, 01:08 PM Go to last post

  7. Cool Independent rear suspension road legal Honda 200m

    Started by SteveTheC, 01-20-2024 01:20 PM
    • Replies: 1
    • Views: 15,509
    ATC King
    01-28-2024, 12:08 AM Go to last post

  8. '84 200x carb slide options...

    Started by rsheehan79, 09-25-2023 06:15 AM
    • Replies: 1
    • Views: 15,390
    atc300r
    09-26-2023, 08:00 PM Go to last post

  9. Valve adjustment issues

    Started by agedatc, 03-31-2021 10:39 PM
    • Replies: 5
    • Views: 20,295
    ATC200X4716
    05-29-2023, 10:00 PM Go to last post

  10. Correct clutch pattern

    Started by Tortuga, 09-22-2022 04:34 PM
    • Replies: 4
    • Views: 17,686
    Tortuga
    09-23-2022, 03:37 PM Go to last post

  11. 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: 34,054
    BOB MARLIN
    04-05-2022, 12:13 PM Go to last post

  12. Turbo ATC200X... Go-Kart

    Started by ARJ0019, 02-09-2021 02:39 AM
    • Replies: 6
    • Views: 21,271
    ps2fixer
    02-12-2022, 04:10 PM Go to last post

  13. ATC Steering Stem Swaps?

    Started by Mr. NeverPlea, 10-30-2021 09:55 PM
    • Replies: 5
    • Views: 19,269
    Dirtcrasher
    02-12-2022, 03:53 PM Go to last post

  14. Hondaline ATC250es Cargo Net

    Started by sp00nfedem1, 01-11-2022 11:33 AM
    • Replies: 0
    • Views: 15,214
    sp00nfedem1
    01-11-2022, 11:33 AM Go to last post

  15. 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: 92,325
    ATC King
    11-09-2021, 10:41 PM Go to last post

  16. 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: 244,122
    Leevvii
    06-20-2021, 03:23 AM Go to last post

  17. 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: 46,950
    benm492
    06-03-2021, 10:36 PM Go to last post

  18. Predator Swap

    Started by 200Maniac, 03-13-2021 09:15 AM
    • Replies: 2
    • Views: 18,651
    TrikeKid
    03-24-2021, 11:29 PM Go to last post

  19. Mini-R project

    Started by atc500x, 05-10-2020 11:31 PM
    2 Pages •
    1 2
    17 Attachment(s)
    • Replies: 29
    • Views: 121,205
    atc500x
    02-11-2021, 08:46 AM Go to last post

  20. Poll Poll: New Tri-z clutch covers

    Started by TRITecate350, 02-20-2008 08:03 PM
    3 Pages •
    1 2 3
    • Replies: 32
    • Views: 65,110
    YTZ drew
    01-16-2021, 11:27 PM Go to last post

  21. 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: 178,767
    Shep1970
    09-28-2020, 06:35 PM Go to last post

  22. Best frame for the job

    Started by JK47, 09-07-2020 11:15 AM
    • Replies: 0
    • Views: 15,438
    JK47
    09-07-2020, 11:15 AM Go to last post

  23. 87 200x Clutch Question

    Started by jasong_10, 07-25-2020 10:35 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 33,624
    fieldy
    07-27-2020, 10:33 PM Go to last post

  24. 1983 250r airbox hose

    Started by ATC90JAY, 07-22-2020 09:06 PM
    • Replies: 0
    • Views: 16,066
    ATC90JAY
    07-22-2020, 09:06 PM Go to last post

  25. Locked up 85 atc 70 tranny.

    Started by Russman1986, 05-03-2020 03:39 PM
    • Replies: 2
    • Views: 18,773
    ATC King
    07-15-2020, 08:32 PM Go to last post

  26. What is it ? Help

    Started by jaybird4554, 06-15-2020 07:37 PM
    • Replies: 1
    • Views: 18,670
    oldskool83
    06-15-2020, 07:51 PM Go to last post

  27. Extreme Pipe Repair???

    Started by TheSuperJank, 05-01-2020 12:55 AM
    • Replies: 0
    • Views: 15,450
    TheSuperJank
    05-01-2020, 12:55 AM Go to last post

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

    Started by RickieLee, 04-14-2020 04:14 PM
    • Replies: 2
    • Views: 17,411
    RickieLee
    04-14-2020, 07:39 PM Go to last post

  29. ATC 250R - Wider Footpegs

    Started by Red Rider, 11-03-2010 08:59 PM
    2 Pages •
    1 2
    10 Attachment(s)
    • Replies: 26
    • Views: 59,839
    Red Rider
    04-14-2020, 12:35 AM Go to last post

  30. 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: 17,043
    superjeff97500
    03-25-2020, 01:46 PM Go to last post

  31. 200s Build

    Started by 3wheeler_kid, 03-23-2020 10:24 PM
    • Replies: 2
    • Views: 18,670
    3wheeler_kid
    03-24-2020, 04:42 PM Go to last post

  32. Fat Cat 250sx

    Started by atc500x, 11-29-2009 10:47 PM
    3 Pages •
    1 2 3
    23 Attachment(s)
    • Replies: 40
    • Views: 74,776
    atc500x
    02-02-2020, 09:10 AM Go to last post

  33. 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: 99,450
    El Camexican
    12-30-2019, 07:15 PM Go to last post

  34. 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: 44,179
    Red Rider
    11-26-2019, 11:27 PM Go to last post

  35. Chain Alignment

    Started by Gabriel, 10-23-2019 10:55 AM
    • Replies: 4
    • Views: 19,573
    NeverLift
    10-23-2019, 03:04 PM Go to last post

  36. External Oil cooler atc185s case?

    Started by Laredo, 10-23-2019 08:59 AM
    • Replies: 2
    • Views: 18,210
    Laredo
    10-23-2019, 10:14 AM Go to last post

  37. 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: 181,200
    atc300r
    10-22-2019, 01:08 PM Go to last post

  38. 1986 TRX/ATC Expansion Chamber Question

    Started by bauercolton2000, 08-22-2019 02:46 PM
    • Replies: 1
    • Views: 16,843
    Tri-Z 250
    08-23-2019, 10:34 AM Go to last post

  39. 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: 48,776
    ATC-Eric
    08-03-2019, 08:38 PM Go to last post

  40. Mini Bike trike

    Started by Gabriel, 07-10-2019 05:07 PM
    • Replies: 0
    • Views: 17,075
    Gabriel
    07-10-2019, 05:07 PM Go to last post

  41. mudproof air intake gen 1 aircooled suggestions?

    Started by OldNo437, 07-02-2019 10:27 AM
    • Replies: 0
    • Views: 16,821
    OldNo437
    07-02-2019, 10:27 AM Go to last post

  42. 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: 154,534
    yaegerb
    06-13-2019, 08:09 PM Go to last post

  43. EFI on an ATC??

    Started by Gabriel, 04-30-2019 02:07 PM
    2 Attachment(s)
    • Replies: 11
    • Views: 28,550
    RubberSalt
    05-01-2019, 01:30 PM Go to last post

  44. Single wheel pull conversion.

    Started by Gabriel, 01-22-2019 03:10 PM
    1 Attachment(s)
    • Replies: 10
    • Views: 25,378
    RubberSalt
    05-01-2019, 03:02 AM Go to last post

  45. Honda engine parts interchangeability

    Started by Gabriel, 03-25-2019 02:38 PM
    • Replies: 1
    • Views: 16,938
    RubberSalt
    04-30-2019, 11:34 AM Go to last post

  46. ATC 70 + Powerwheels = electric ATC 70

    Started by ADOR, 11-11-2010 05:39 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 55,818
    Quinc
    04-04-2019, 11:54 AM Go to last post

  47. 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: 83,089
    HorseMcHorseman
    04-02-2019, 12:02 AM Go to last post

  48. 200cc engine build......

    Started by Gabriel, 02-06-2019 04:13 PM
    • Replies: 5
    • Views: 21,471
    oldskool83
    03-25-2019, 12:41 PM Go to last post

  49. Positive Crankcase Ventilation

    Started by Gabriel, 01-30-2019 11:38 AM
    • Replies: 1
    • Views: 21,888
    big specht
    01-30-2019, 08:56 PM Go to last post

  50. 1986/87 Honda 200x headlight “shells”

    Started by Shep1970, 05-01-2018 08:36 PM
    3 Pages •
    1 2 3
    25 Attachment(s)
    • Replies: 31
    • Views: 106,984
    Shep1970
    01-23-2019, 02:48 PM Go to last post
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