Bad to the Beater - CM400T "BAD AXE" - [LONG TERM]

View Poll Results: Which style would you prefer to see?

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  • Style 1

    1 25.00%
  • Style 2

    1 25.00%
  • Style 3

    2 50.00%
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  • 3 Post By longdistancerider
  • 1 Post By ScramblerCurtis

Thread: Bad to the Beater - CM400T "BAD AXE" - [LONG TERM]

  1. #1
    Junior Member SiddO's's Avatar
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    Bad to the Beater - CM400T "BAD AXE" - [LONG TERM]

    Hello ladies and gents, I'm SiddO's (My Introduction thread is here) and I'm going to be throwing the next couple of months (or years, haha) of my life into this little CM400T I bought off craigs and fell in love with

    To Start With (right from my intro thread):




    Planned Drafts:

    Style 1: Sports Semi-Cruiser


    Style 2: Sports


    Style 3: Full Cruiser


    Rough PS sketches of each style! Vote for the style you'd most enjoy, or leave any tips/suggestions/questions/etc about them down below. They will get updated as time goes on.


    The current changes in the sketches (the one's you're looking at) are:

    Long pipe and scavenge connector delete (Must do)
    Black Paint
    Low bars + lower / new telemetry
    Street tyres (whitewalls not shown) and fresh paint on the wheels (not shown)
    Side cover (missing on my bike currently, black)
    Sand down and polish motor and other items (not shown)
    Bigger front fender with light
    Leather bobberstyle seat + passenger seat
    Re-do Rear Fender
    Run pods with that velocity stack trick someone mentioned on this forum (not shown, just a maybe)
    Swap out carbs with something more tune-friendly / power friendly? (not shown, just a maybe)


    Things I've got to do to the bike (TLC items):

    Green = Done
    Yellow = Mostly Done / Problem solved
    Red = Not done


    New choke cable
    New Throttle cable or throttle assembly
    Clean Carbs
    Change Oil
    Lube chain
    New Tyres(?)
    New RPM Gauge (this one makes funny noises)
    A very thorough washdown
    Saddlebags
    Left side electrics cover
    Phone mount &Charger
    New fuel line & filter (this one is grimy)
    Get myself some leathers (not technically part of the bike)
    fix Neutral light/clutch/transmission gremlins(???)

    As of now I'm kinda swamped with Life-Stuff and don't have anywhere to properly get cracking and work (All I need is a table, chair, and some shade!!), but I hope to get started soon. Wish me luck guys
    Last edited by SiddO's; 03-12-2017 at 08:24 PM.

    '81 CM400T
    -TBC-

  2. #2
    Super Moderator longdistancerider's Avatar
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    Version 2 doesn't work for me. Sport type rear fender works with the bars, long exhaust and the Indian type front fender are exactly opposite of "sport"
    Unsure about the other 2

    I can't recommend loosing the power chamber, air box or swapping carbs unless you wish to spend more time wrenching than riding. The original configuration from Honda does work quite well with good reliability.
    ancientdad, J-T and dtsmjr8dan like this.
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 survivor restoration

    SALE IS ACTIVE TILL 200 SHIRTS SOLD T-shirt sales supporting 66Sprint's Land Speed Record Build http://www.hondatwins.net/forums/22-...d-attempt.html

    http://www.hondatwins.net/forums/22-...d-attempt.html and http://www.hondatwins.net/forums/1-p...r-attempt.html
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  3. #3
    Senior Member ScramblerCurtis's Avatar
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    Sweet ride there. I like version 1 with a few sport bags on the back. Fringe isn't my style but make it yours. Looking forward to the build.
    SiddO's likes this.
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - No project name yet (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

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  5. #4
    Junior Member SiddO's's Avatar
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    Quote Originally Posted by longdistancerider View Post
    Version 2 doesn't work for me. Sport type rear fender works with the bars, long exhaust and the Indian type front fender are exactly opposite of "sport"
    Unsure about the other 2

    I can't recommend loosing the power chamber, air box or swapping carbs unless you wish to spend more time wrenching than riding. The original configuration from Honda does work quite well with good reliability.
    Thanks for the feedback! I really wanted the long exhaust but I didn't want to go either way with too cruisery or too sporty. I personally hate short exhausts but maybe that's just me :P

    The thing with this bike is that i'm not going to ride it often, It's mainly something I want to learn to wrench on, especially when it comes to carbs and tuning / fixing them etc. At least I think haha. Anyways I know that the Honda configuration is rock solid, but this is all very long term. A lot can change plan-wise till then, but I definitely want to do something performance wise. Thanks for the advice and stay tuned, I'm gonna get cracking soon as the weather calms down haha

    '81 CM400T
    -TBC-

  6. #5
    Super Moderator longdistancerider's Avatar
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    First step for performance is getting the earlier VB21 carbs. 32mm vs. 30mm you have now
    Next is the ignition timing, I can almost guarantee it's not advancing properly.
    Of course this is only worthwhile if the engine is good on compression, 185 psi +/-14 psi is spec so 170 psi is the minimum you want
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 survivor restoration

    SALE IS ACTIVE TILL 200 SHIRTS SOLD T-shirt sales supporting 66Sprint's Land Speed Record Build http://www.hondatwins.net/forums/22-...d-attempt.html

    http://www.hondatwins.net/forums/22-...d-attempt.html and http://www.hondatwins.net/forums/1-p...r-attempt.html
    Road Trip http://www.hondatwins.net/forums/11-...here-i-go.html or "where's Jim now?"
    Member Map http://www.hondatwins.net/forums/dcMembermap.php

  7. #6
    Junior Member SiddO's's Avatar
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    Quote Originally Posted by longdistancerider View Post
    First step for performance is getting the earlier VB21 carbs. 32mm vs. 30mm you have now
    Next is the ignition timing, I can almost guarantee it's not advancing properly.
    Of course this is only worthwhile if the engine is good on compression, 185 psi +/-14 psi is spec so 170 psi is the minimum you want
    Right on! Thanks for the numbers. I really should've properly checked compression before I bought the thing, but I let one of my "friends" borrow my gauge and forgot to order another off of amazon. , although I did use the thumb trick so it should be alright.
    Last edited by SiddO's; 03-14-2017 at 06:18 PM. Reason: Scatterbrained writing .-.

    '81 CM400T
    -TBC-

  8. #7
    Super Moderator longdistancerider's Avatar
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    Quote Originally Posted by SiddO's View Post
    Right on! Thanks for the numbers. I really should've checked compression before I bought the thing, but I let one of my "friends" borrow my gauge and forgot to order another off of amazon. , although I did use the thumb trick so it should be alright.
    .
    My thumb is calibrated for 100 psi and higher, not sure about yours,
    Be sure the choke is off and the throttle is wide open when testing, crank until the gauge stops rising.
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 survivor restoration

    SALE IS ACTIVE TILL 200 SHIRTS SOLD T-shirt sales supporting 66Sprint's Land Speed Record Build http://www.hondatwins.net/forums/22-...d-attempt.html

    http://www.hondatwins.net/forums/22-...d-attempt.html and http://www.hondatwins.net/forums/1-p...r-attempt.html
    Road Trip http://www.hondatwins.net/forums/11-...here-i-go.html or "where's Jim now?"
    Member Map http://www.hondatwins.net/forums/dcMembermap.php

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