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Thread: My ATC 70 Build w/ Piranha 150 motor

  1. 04-14-2014, 08:59 AM #16
    250rmanfmf's Avatar
    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    cool, Thanks guys. rg97 that is a seadoo 951 DI motor.
    85 ATC 250r -Under Construction
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  2. 08-29-2014, 05:29 PM #17
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    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    More progress!

    Well its been a while since my last post but I have been working on this little guy again. Still working on figuring out the wiring harness but I should be done today with that. Also Was wondering if anyone has pics of cut rear fenders as I am not a huge fan of the wrap around (part that's between the front of back tire and your foot) fender look and was think of cutting them but would like to see pics. Also what are you guys using for petcocks as the atc 70 tank has two spouts and the new vm26 carb doesn't have the built in petcock like the stock carb.

    Thanks

    Click image for larger version.  Name: 101_2313.JPG  Views: 46  Size: 1.46 MB  ID: 199888Click image for larger version.  Name: 101_2315.JPG  Views: 62  Size: 1.88 MB  ID: 199889Click image for larger version.  Name: 101_2316.JPG  Views: 48  Size: 1.38 MB  ID: 199890Click image for larger version.  Name: 101_2317.JPG  Views: 51  Size: 1.52 MB  ID: 199891
    85 ATC 250r -Under Construction
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  3. 08-29-2014, 08:22 PM #18
    1upfront's Avatar
    1upfront
    1upfront is offline Got The Holeshot Arm chair racerJust too addicted
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    Quote Originally Posted by 250rmanfmf View Post
    Well its been a while since my last post but I have been working on this little guy again. Still working on figuring out the wiring harness but I should be done today with that. Also Was wondering if anyone has pics of cut rear fenders as I am not a huge fan of the wrap around (part that's between the front of back tire and your foot) fender look and was think of cutting them but would like to see pics. Also what are you guys using for petcocks as the atc 70 tank has two spouts and the new vm26 carb doesn't have the built in petcock like the stock carb.

    Thanks

    Click image for larger version.  Name: 101_2313.JPG  Views: 46  Size: 1.46 MB  ID: 199888Click image for larger version.  Name: 101_2315.JPG  Views: 62  Size: 1.88 MB  ID: 199889Click image for larger version.  Name: 101_2316.JPG  Views: 48  Size: 1.38 MB  ID: 199890Click image for larger version.  Name: 101_2317.JPG  Views: 51  Size: 1.52 MB  ID: 199891
    I just put a 1 inch piece of hose with a metal plug on the "on" spigot of the gas tank and used the reserve spigot going straight to my mikuni vm roundslide. I use a small set of match plastic pinch off pliers as a shut off. Also I was able to dent in the inside of the tank enough that I didn't have to use any washers under it. The carb tucked underneath nicely.Click image for larger version.  Name: IMG_20140809_185018.jpg  Views: 56  Size: 1.51 MB  ID: 199895
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  4. 08-29-2014, 08:46 PM #19
    John jr
    John jr is offline First Time Rider Arm chair racerNew to the board
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    Cut rear fender

    Click image for larger version.  Name: R-55, FINISHED 012.JPG  Views: 51  Size: 534.1 KB  ID: 199901Here's how I cut my last rear fender.Click image for larger version.  Name: R-55, FINISHED 007.JPG  Views: 54  Size: 555.2 KB  ID: 199896
    Attached Thumbnails Attached Thumbnails R-55, Finished 029.JPG  
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  5. 08-30-2014, 10:43 AM #20
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    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    cool

    Cool, Thanks guys for the info and pics. I just ended up plugging the second line also. Well, she is done! I am very happy with how it turned out. I just need to make some jetting changes and I may adjust my brackets to bring the front part of seat back down. Other than that I am done

    Here is what the final product looks like, its not a show bike but I like how it turned out.

    Click image for larger version.  Name: 101_2318.JPG  Views: 58  Size: 2.63 MB  ID: 199920Click image for larger version.  Name: 101_2319.JPG  Views: 42  Size: 2.91 MB  ID: 199921Click image for larger version.  Name: 101_2320.JPG  Views: 51  Size: 2.72 MB  ID: 199922Click image for larger version.  Name: 101_2321.JPG  Views: 38  Size: 2.64 MB  ID: 199923Click image for larger version.  Name: 101_2322.JPG  Views: 41  Size: 2.46 MB  ID: 199924
    85 ATC 250r -Under Construction
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  6. 08-30-2014, 11:00 AM #21
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    1upfront
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    Looks good man i love 70's I have 250rs too but the bike70 gets all the attention. Not gonna run a front fender on that badboy? It might help with cooling if you do it like I did mine, it acts like a scoop for air.Click image for larger version.  Name: IMG_20140809_185048.jpg  Views: 34  Size: 1.66 MB  ID: 199925
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  7. 08-30-2014, 11:28 AM #22
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    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    Nope, no front fender as I like the look of no front fender so far.
    85 ATC 250r -Under Construction
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  8. 09-03-2014, 01:17 AM #23
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    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    Well took it out for a few runs and holy crap this thing is quick! Unless you are on flat ground 2nd is the gear to be in. On rough surfaces the bike seems too short and starts bouncing from lack of suspension and gets a little hairy. Other than that its a blast to ride. I will be looking at adding suspension at some point but for now will enjoy what I have.
    85 ATC 250r -Under Construction
    86 TRX250r
    05 KFX400
    02 400EX
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  9. 09-03-2014, 01:20 PM #24
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    R.J.M.
    R.J.M. is offline At The Back Of The Pack Arm chair racerFirst time rider
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    That thing looks amazing! Great job
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  10. 09-03-2014, 06:10 PM #25
    tecaterob
    tecaterob is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Lets see the video..
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  11. 09-03-2014, 10:44 PM #26
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    CRAZY70MAN
    CRAZY70MAN is offline Power User Teaching quads a lesson
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    Nice job....as a veteran of racing big bore 70s for years on dirt and ice....hang on is my advice!! Lol..have fun and respect it.....lol....it will bite!
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  12. 09-04-2014, 02:06 PM #27
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    Dirtcrasher
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    Looks great!! Plenty of sweet parts on there.

    Gotta start building mine before winter sets in : (
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  13. 09-06-2014, 10:52 AM #28
    250rmanfmf's Avatar
    250rmanfmf
    250rmanfmf is offline Got The Holeshot Arm chair racerJust too addicted
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    Thanks Guys! I will get a video up when I can. I will be in the market for a suspended frame.
    85 ATC 250r -Under Construction
    86 TRX250r
    05 KFX400
    02 400EX
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  14. 01-08-2018, 03:35 PM #29
    Quinc
    Quinc is offline First Time Rider Arm chair racerNew to the board
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    Any more modifications or video? Also where did you get your front brake setup?
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  15. 01-18-2018, 08:32 AM #30
    magilla12
    magilla12 is offline First Time Rider Arm chair racerNew to the board
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    Very nice, I’ll be doing a 140 soon, still gathering parts, and I would also like to know where you got the front brake setup.


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