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Thread: Add Left master cylinder to Auto-X

  1. #1
    RUNMEDOWN is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Add Left master cylinder to Auto-X

    Cant seem to find the info I am looking for, I am building an Auto-x and am thinking that I would rather not deal with the right-foot brake mod (I don't use the foot brake on my other Trikes) and just put a master cylinder on the left hand in place of the (No longer needed) Clutch lever and get a custom braided brake line to run to the back caliper. Any reason not to do this?
    85 ATC110 - The Greatest ATC of all time - (My First - new in 85)
    83 FL250 - Odyssey w/420cc - SOLD
    82 185s -10.25:1 piston, Full 200x upper, Goki Electric start - SOLD
    84 200x - Auto-X - Weisco Hi-comp, Cam'd, Bassani'd, Westcoast swinger, -SOLD
    82 200E Big Red -SOLD
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  2. #2
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    I really dont see a down side on your auto-x... Thats exactly what I did a couple yrs ago but on my ATC 185S (converted to rear disc brake). Anyway, I used a left-hand master cyl. simply because it was gonna be tricky (for me) to make the stock 185S foot brakepedal work with a rear master cyl.-
    I would definatly use a lefthand master cyl. vs. a righthand master cyl. You dont want throttle & brake using the same hand obviously. That being said-
    Whats YOUR reason for doing this though????What right-footbrake mod are you talking about???? A 200X is already set up for disc brake-im confused...?
    Previously Owned:
    1985 ATC 250R (261cc)- 38MM PWK QV/AS, VFORCE3, RPM TIMING ADV., FULL DG EXH, CLARKE WHITE TANK, DOUGLAS RED LABELS, PRM NERF BARS, + ALUM. PARTS
    1983 ATC 185S (186cc)- HI COMP., BASSANI HEADER, REAR DISC BRAKE CONV., '86 200X HUBS, ALUM. RIMS, DIRT DEVILS
    1982 ATC 185S (224cc)- PK WELD-ON KIT, PK CLAMPS, PK EXHAUST, SL90 SHOCKS, OIL COOLER, PCCC RIMS
    1981 ATC 185S
    1984 ATC 250R
    1981 ATC 250R
    1983 ATC 110
    1969 HONDA MINI TRAIL 50


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  3. #3
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    PM me if you want to buy a new mastercylinder. I sell them left and right side.

  4. #4
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    After thinking about it-I assume the stock brake pedal needs to be removed to fit 185/200 motor-correct???
    Previously Owned:
    1985 ATC 250R (261cc)- 38MM PWK QV/AS, VFORCE3, RPM TIMING ADV., FULL DG EXH, CLARKE WHITE TANK, DOUGLAS RED LABELS, PRM NERF BARS, + ALUM. PARTS
    1983 ATC 185S (186cc)- HI COMP., BASSANI HEADER, REAR DISC BRAKE CONV., '86 200X HUBS, ALUM. RIMS, DIRT DEVILS
    1982 ATC 185S (224cc)- PK WELD-ON KIT, PK CLAMPS, PK EXHAUST, SL90 SHOCKS, OIL COOLER, PCCC RIMS
    1981 ATC 185S
    1984 ATC 250R
    1981 ATC 250R
    1983 ATC 110
    1969 HONDA MINI TRAIL 50


    TRIKELESS

  5. #5
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    Quote Originally Posted by 3wheelrider View Post
    After thinking about it-I assume the stock brake pedal needs to be removed to fit 185/200 motor-correct???
    The stock 200X brake pedal uses the clutch cover as its mounting point. Once you go to an auto-clutch engine, the cover no longer has that provision and a custom pedal setup has to be fabbed, or change to a handbrake. I have read that 350X pedals fit onto the 200X footpeg boss with basically no fab work needed to keep the rear brake foot-activated. If you search, there's a thread on here somewhere.
    1985 Tri-Z 250
    1985 ATC250R

  6. #6
    Join Date
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    I used a 86 200x foot brake and used a piece of black sheet metal to move the rear master cylinder left a couple inches to meet up. I do need to also weld a small ber to adjust the foot action further out.

  7. #7
    RUNMEDOWN is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Quote Originally Posted by 3wheelrider View Post
    After thinking about it-I assume the stock brake pedal needs to be removed to fit 185/200 motor-correct???
    Correct, I just grew up on an atc110 and never used the foot brake, always the left hand. I am going to try out the left master cylinder for the rear and keep the right master cylinder for the front to see how it plays out. I was also considering running just the right master cylinder with a "T" to run both front and rear but did not want to have all controls on one hand like you had stated.
    85 ATC110 - The Greatest ATC of all time - (My First - new in 85)
    83 FL250 - Odyssey w/420cc - SOLD
    82 185s -10.25:1 piston, Full 200x upper, Goki Electric start - SOLD
    84 200x - Auto-X - Weisco Hi-comp, Cam'd, Bassani'd, Westcoast swinger, -SOLD
    82 200E Big Red -SOLD
    85 ATC250ES Big Red - Snow Plow !

  8. #8
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    I have 2 hand brakes on my super x and they work great. Controlling wheelies is a little tricky at first. Getting back on a bike with conventional brakes you have to remind yourself of the foot pedal.
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  9. #9
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    You could run a double stack banjo bolt and have a left handed brake & rear brake pedal at the same time.
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  10. #10
    Join Date
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    Quote Originally Posted by onformula1 View Post
    You could run a double stack banjo bolt and have a left handed brake & rear brake pedal at the same time.
    I did think about doing that and I had all of the quad front brake parts but sleezbay was running deals on the set of masters...
    "Roll on 3"

    RIP Ol' Deuce

    "Long Live the ATC"
    Building: ATCr125x
    Riding: ATC200sx
    "I am not a mechanic, mechanics get paid for this. I do it because I enjoy it."

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