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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    207,176
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Threads 1 to 50 of 736

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: 24,323
    J_Stafford
    05-30-2010, 06:00 PM Go to last post

  1. its that time again, ATC70 BUILD COMING.

    Started by KASEY, 11-24-2021 11:31 PM
    2 Pages •
    1 2
    36 Attachment(s)
    • Replies: 19
    • Views: 38,416
    KASEY
    06-08-2026, 01:06 AM Go to last post

  2. 200x stroker crank 1st gen

    Started by Shawn Powell, 06-03-2026 07:12 PM
    • Replies: 2
    • Views: 475
    Shawn Powell
    06-04-2026, 11:06 PM Go to last post

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

    Started by wreckenthusiast, 01-28-2026 11:39 PM
    • Replies: 0
    • Views: 3,333
    wreckenthusiast
    01-28-2026, 11:39 PM Go to last post

  4. 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: 67,550
    vegas250rr
    12-07-2025, 10:30 PM Go to last post

  5. 200x engine build.

    Started by Shawn Powell, 10-31-2025 09:29 PM
    • Replies: 1
    • Views: 7,538
    Shawn Powell
    11-03-2025, 12:07 AM Go to last post

  6. First Gen Tecate with 87 KX250 Motor Project

    Started by wreckenthusiast, 10-04-2025 11:50 PM
    • Replies: 0
    • Views: 1,161
    wreckenthusiast
    10-04-2025, 11:50 PM Go to last post

  7. KTX Pro Plastics DONT DO IT!

    Started by Shawn Powell, 09-10-2025 03:06 PM
    • Replies: 0
    • Views: 3,546
    Shawn Powell
    09-10-2025, 03:06 PM Go to last post

  8. 85 250sx final drive machined to work on 1986 bike

    Started by rustyhondas, 04-13-2025 02:35 PM
    • Replies: 0
    • Views: 6,035
    rustyhondas
    04-13-2025, 02:35 PM Go to last post

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

    Started by Click, 06-28-2024 01:08 PM
    • Replies: 0
    • Views: 28,424
    Click
    06-28-2024, 01:08 PM Go to last post

  10. Cool Independent rear suspension road legal Honda 200m

    Started by SteveTheC, 01-20-2024 01:20 PM
    • Replies: 1
    • Views: 17,297
    ATC King
    01-28-2024, 12:08 AM Go to last post

  11. '84 200x carb slide options...

    Started by rsheehan79, 09-25-2023 06:15 AM
    • Replies: 1
    • Views: 17,103
    atc300r
    09-26-2023, 08:00 PM Go to last post

  12. Valve adjustment issues

    Started by agedatc, 03-31-2021 10:39 PM
    • Replies: 5
    • Views: 22,390
    ATC200X4716
    05-29-2023, 10:00 PM Go to last post

  13. Correct clutch pattern

    Started by Tortuga, 09-22-2022 04:34 PM
    • Replies: 4
    • Views: 19,397
    Tortuga
    09-23-2022, 03:37 PM Go to last post

  14. Turbo ATC200X... Go-Kart

    Started by ARJ0019, 02-09-2021 02:39 AM
    • Replies: 6
    • Views: 23,474
    ps2fixer
    02-12-2022, 04:10 PM Go to last post

  15. ATC Steering Stem Swaps?

    Started by Mr. NeverPlea, 10-30-2021 09:55 PM
    • Replies: 5
    • Views: 21,115
    Dirtcrasher
    02-12-2022, 03:53 PM Go to last post

  16. Hondaline ATC250es Cargo Net

    Started by sp00nfedem1, 01-11-2022 11:33 AM
    • Replies: 0
    • Views: 16,869
    sp00nfedem1
    01-11-2022, 11:33 AM Go to last post

  17. 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: 95,460
    ATC King
    11-09-2021, 10:41 PM Go to last post

  18. 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: 1,094,315
    Leevvii
    06-20-2021, 03:23 AM Go to last post

  19. 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: 87,768
    benm492
    06-03-2021, 10:36 PM Go to last post

  20. Predator Swap

    Started by 200Maniac, 03-13-2021 09:15 AM
    • Replies: 2
    • Views: 20,534
    TrikeKid
    03-24-2021, 11:29 PM Go to last post

  21. Mini-R project

    Started by atc500x, 05-10-2020 11:31 PM
    2 Pages •
    1 2
    17 Attachment(s)
    • Replies: 29
    • Views: 524,283
    atc500x
    02-11-2021, 08:46 AM Go to last post

  22. Poll Poll: New Tri-z clutch covers

    Started by TRITecate350, 02-20-2008 08:03 PM
    3 Pages •
    1 2 3
    • Replies: 32
    • Views: 72,295
    YTZ drew
    01-16-2021, 11:27 PM Go to last post

  23. 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: 792,393
    Shep1970
    09-28-2020, 06:35 PM Go to last post

  24. Best frame for the job

    Started by JK47, 09-07-2020 11:15 AM
    • Replies: 0
    • Views: 17,001
    JK47
    09-07-2020, 11:15 AM Go to last post

  25. 87 200x Clutch Question

    Started by jasong_10, 07-25-2020 10:35 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 50,967
    fieldy
    07-27-2020, 10:33 PM Go to last post

  26. 1983 250r airbox hose

    Started by ATC90JAY, 07-22-2020 09:06 PM
    • Replies: 0
    • Views: 17,726
    ATC90JAY
    07-22-2020, 09:06 PM Go to last post

  27. Locked up 85 atc 70 tranny.

    Started by Russman1986, 05-03-2020 03:39 PM
    • Replies: 2
    • Views: 21,011
    ATC King
    07-15-2020, 08:32 PM Go to last post

  28. What is it ? Help

    Started by jaybird4554, 06-15-2020 07:37 PM
    • Replies: 1
    • Views: 20,677
    oldskool83
    06-15-2020, 07:51 PM Go to last post

  29. Extreme Pipe Repair???

    Started by TheSuperJank, 05-01-2020 12:55 AM
    • Replies: 0
    • Views: 16,969
    TheSuperJank
    05-01-2020, 12:55 AM Go to last post

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

    Started by RickieLee, 04-14-2020 04:14 PM
    • Replies: 2
    • Views: 18,558
    RickieLee
    04-14-2020, 07:39 PM Go to last post

  31. ATC 250R - Wider Footpegs

    Started by Red Rider, 11-03-2010 08:59 PM
    2 Pages •
    1 2
    10 Attachment(s)
    • Replies: 26
    • Views: 67,949
    Red Rider
    04-14-2020, 12:35 AM Go to last post

  32. 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: 18,659
    superjeff97500
    03-25-2020, 01:46 PM Go to last post

  33. 200s Build

    Started by 3wheeler_kid, 03-23-2020 10:24 PM
    • Replies: 2
    • Views: 20,409
    3wheeler_kid
    03-24-2020, 04:42 PM Go to last post

  34. Fat Cat 250sx

    Started by atc500x, 11-29-2009 10:47 PM
    3 Pages •
    1 2 3
    23 Attachment(s)
    • Replies: 40
    • Views: 80,166
    atc500x
    02-02-2020, 09:10 AM Go to last post

  35. 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: 107,605
    El Camexican
    12-30-2019, 07:15 PM Go to last post

  36. 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: 48,758
    Red Rider
    11-26-2019, 11:27 PM Go to last post

  37. Chain Alignment

    Started by Gabriel, 10-23-2019 10:55 AM
    • Replies: 4
    • Views: 21,237
    NeverLift
    10-23-2019, 03:04 PM Go to last post

  38. External Oil cooler atc185s case?

    Started by Laredo, 10-23-2019 08:59 AM
    • Replies: 2
    • Views: 19,898
    Laredo
    10-23-2019, 10:14 AM Go to last post

  39. 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: 798,425
    atc300r
    10-22-2019, 01:08 PM Go to last post

  40. 1986 TRX/ATC Expansion Chamber Question

    Started by bauercolton2000, 08-22-2019 02:46 PM
    • Replies: 1
    • Views: 18,378
    Tri-Z 250
    08-23-2019, 10:34 AM Go to last post

  41. 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: 51,684
    ATC-Eric
    08-03-2019, 08:38 PM Go to last post

  42. Mini Bike trike

    Started by Gabriel, 07-10-2019 05:07 PM
    • Replies: 0
    • Views: 18,688
    Gabriel
    07-10-2019, 05:07 PM Go to last post

  43. mudproof air intake gen 1 aircooled suggestions?

    Started by OldNo437, 07-02-2019 10:27 AM
    • Replies: 0
    • Views: 18,405
    OldNo437
    07-02-2019, 10:27 AM Go to last post

  44. 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: 586,341
    yaegerb
    06-13-2019, 08:09 PM Go to last post

  45. EFI on an ATC??

    Started by Gabriel, 04-30-2019 02:07 PM
    2 Attachment(s)
    • Replies: 11
    • Views: 31,066
    RubberSalt
    05-01-2019, 01:30 PM Go to last post

  46. Single wheel pull conversion.

    Started by Gabriel, 01-22-2019 03:10 PM
    1 Attachment(s)
    • Replies: 10
    • Views: 27,406
    RubberSalt
    05-01-2019, 03:02 AM Go to last post

  47. Honda engine parts interchangeability

    Started by Gabriel, 03-25-2019 02:38 PM
    • Replies: 1
    • Views: 18,076
    RubberSalt
    04-30-2019, 11:34 AM Go to last post

  48. ATC 70 + Powerwheels = electric ATC 70

    Started by ADOR, 11-11-2010 05:39 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 62,313
    Quinc
    04-04-2019, 11:54 AM Go to last post

  49. 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: 88,480
    HorseMcHorseman
    04-02-2019, 12:02 AM Go to last post

  50. 200cc engine build......

    Started by Gabriel, 02-06-2019 04:13 PM
    • Replies: 5
    • Views: 23,363
    oldskool83
    03-25-2019, 12:41 PM Go to last post
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