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Thread: 4130 Chromoly Frame ATC250R

  1. #46
    Join Date
    Jan 2014
    Location
    North Bend, OR
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    42
    Thank you, I had called and left a message, but just wanted to make sure it was the right one. Any of those conversations concerning putting a 450 motor in one? Looks like he's in Oregon. I live down in Coos Bay and if I can be of any assistance I'd be glad to.
    Last edited by socs28; 04-08-2015 at 06:29 PM.
    ATC 70
    ATC 110
    Yamaha 225DX
    ATC 185s
    86 ATC 310r

  2. #47
    Join Date
    Feb 2015
    Location
    United States
    --
    62
    A frame for a cr500 and another for a 450fs would be a dream come true.

  3. #48
    Join Date
    Jul 2010
    Location
    O.C., Oregon
    --
    921
    Quote Originally Posted by socs28 View Post
    Thank you, I had called and left a message, but just wanted to make sure it was the right one. Any of those conversations concerning putting a 450 motor in one? Looks like he's in Oregon. I live down in Coos Bay and if I can be of any assistance I'd be glad to.
    Unfortunately not, although he said he can make it so a modern 450 swinger will bolt right in with the proper linkage mounts (Which is the route I'm thinking of going) so I'm sure a 450 motor is not out of the question by any means.
    1985 250r-LED Performance 4mm Stroker motor
    1978 ATC70 w/ Piranha 140cc
    1972 - K1 - CT70 w/lifan 125cc
    2017 YZ 250x- Braap

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  4. #49
    Join Date
    Jan 2014
    Location
    North Bend, OR
    --
    42
    that's what I'm thinking, by the looks of it, it has a good bit more room than stock, that's one of the reasons I want to talk. My next thing is going to be a 450 in a 250r chassis, I'd like to go this route, and I'd really rather not buy a brand new frame and then start cutting on it... I plan on going with the crf450x motor so I get the smaller head/cam cover, smaller carb, electric start, and same 1st gear as trx, then we'll look at what do do about the smaller valves.
    ATC 70
    ATC 110
    Yamaha 225DX
    ATC 185s
    86 ATC 310r

  5. #50
    Join Date
    Jan 2013
    Location
    Rochester, NY
    --
    87
    Has anyone been able to get one yet? What is the best motocross combination in your opinion? (I am guessing 450r swing arm). Thank you.
    Tom

    1983 ATC 110
    1985 ATC 250SX
    1985 ATC 250ES
    2 - 1985 ATC 250r's
    1986 ATC 250r

    Please leave feedback if you deal with me in any way. Thank you.
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  6. #51
    Join Date
    Jul 2010
    Location
    O.C., Oregon
    --
    921
    I wish! I still can't get ahold of him..
    1985 250r-LED Performance 4mm Stroker motor
    1978 ATC70 w/ Piranha 140cc
    1972 - K1 - CT70 w/lifan 125cc
    2017 YZ 250x- Braap

    Youtube channel = http://www.youtube.com/user/ter5678/videos

  7. #52
    Join Date
    Mar 2007
    Location
    Texas
    --
    5,045
    we were thinking of asking about the 350x and see if he can do one for it, but with this kind of customer service, I think we will just continue as we are.
    ________________
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  8. #53
    Join Date
    Feb 2011
    Location
    Surprise, AZ
    --
    2,428
    I don't know this guy nor have I tried to contact him, but my theory is he built it and its very nice, quoted a price then added up the steel, consumables and time and said this is not possible.

    I was thinking around $1200-$1500 until I read Mr. Clean's post of $700 bucks!, I have seen stock frames go for $500 bucks.
    Email- onformula1@hotmail.com Rebuilt, Revalved, custom springs, lowering, forks & shocks, Custom Suspension, all brands, 2-3-4 wheeler's- PM or Email with questions.

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  9. #54
    Join Date
    May 2006
    Location
    The Open Road
    --
    4,727
    I would be patient. I'll bet he got BLASTED with emails and PMs saying anything from "I'll take it" to "what kind of motor can I put in there" to "would you make one for an ATC185"....if he spent all week answering emails, he ain't got time to weld a frame.

    I also agree with Milner. I personally think he is underpriced on those frames however the low price is exactly why I want one. Its worth 1500$ as long as those welds have correct penetration, however I'm not looking to build on a $1500 frame...$700 though is doable for me.

  10. #55
    Join Date
    Oct 2014
    Location
    NEBRASKA,USA
    --
    104
    Update? Has anyone test the new frame?

  11. #56
    JesseA420's Avatar
    JesseA420 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Mar 2008
    Location
    Nebraska
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    147
    bump. anyone talked to dave about these lately?

  12. #57
    Join Date
    Oct 2006
    Location
    Surprise AZ. In the garage working on trikes.
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    2,502
    Quote Originally Posted by JesseA420 View Post
    bump. anyone talked to dave about these lately?
    He said on a social media site that he is not taking on any work after April 1st so he can go to races and rides. He was going to go to the Invasion but had to punt due to work load.

    His build looks pretty good to me
    Attached Thumbnails Attached Thumbnails 11148383_10203819751595720_162150039515511474_o.jpg   11202831_10203819751355714_3753923750572989941_o.jpg  

  13. #58
    Join Date
    Aug 2014
    Location
    South Louisiana
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    1,915
    Quote Originally Posted by Mr. Clean View Post
    He said on a social media site that he is not taking on any work after April 1st so he can go to races and rides. He was going to go to the Invasion but had to punt due to work load.

    His build looks pretty good to me
    Swinger looks really nice, wonder if he fabbed it as well???
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  14. #59
    Join Date
    Apr 2011
    Location
    Mexico
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    9,014
    Quote Originally Posted by loganm View Post
    Is he heat-treating the chromoly?
    Why would he? It's a frame, not an axle, or a bushing. If anything you would stress relive it after welding. Feel to explain the process to us, or better yet post up a link where someone has heat treated a frame of any kind. I'd love to learn about this.
    It sucks to get old

  15. #60
    loganm is offline Competing with a gnat in reading comprehension. Current winner: Gnat. Arm chair racerAt the back of the pack
    Join Date
    Jun 2015
    Location
    Kansas
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    364
    Quote Originally Posted by El Camexican View Post
    Why would he? It's a frame, not an axle, or a bushing. If anything you would stress relive it after welding. Feel to explain the process to us, or better yet post up a link where someone has heat treated a frame of any kind. I'd love to learn about this.
    Q. Do I need to heat treat (stress relieve) 4130 after welding?
    A. Thin wall tubing normally does not require stress relief. For parts thicker than .120", stress-relieving is recommended and 1,100ºF is the optimum temperature for tubing applications. An Oxy/Acetylene torch with neutral flame can be used. It should be oscillated to avoid hot spots.

    From lincolns website. Ig it's not required on thinner stuff. It is done on the welds on thicker stuff to prevent it from cracking. On ultra4 cars and the like the majority is made out of mild steel DOM tubing since chromoly doesn't offer much of an advantage for the extra work and money it requires.

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