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Thread: Suzuki dr350/ atc350x conversion

  1. #1
    Join Date
    Feb 2008
    Location
    hampshire
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    30

    Suzuki dr350/ atc350x conversion

    I am currently undertaking my third project a suzuki dr350/ atc 250r/ 350x hybrid. I have previoulsy restored a 84 air fooler and road registered it and 2 years ago built a zzr250 supermoto trike for road/ green lane use, and now its time for something else. I ave learnt the hard way how to make a good three wheelr and the key is to keep it simple. You need at least 30-35 horsepower, around 100 kilos weight and adequate suspension to ensure good handling . My donor bike is a 95 dr 350 s suzuki and i have fabricated a rear swinger by using a 400ex swinger and axle set up , and am fabricating 350 x tripples to hold the drs 43mm forks with a 350x front hub. I follow this site religiously and have leanrt from some of the big names the 450 crf is one of the best conversions but having green laned for years the dr350 with a 400 kit knocks out 40 -45 horses and is absolutely bulet proof . I will enclose photos if any one is interested- and am always in need of decent atc parts Nick

  2. #2
    Join Date
    Dec 2008
    Location
    Monroe MI
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    5,787

  3. #3
    Join Date
    Jul 2009
    Location
    South Florida
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    6,726

    Pictures

    Yeah lets see some
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

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  4. #4
    audioworks04's Avatar
    audioworks04 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2008
    Location
    Kansas City, KS
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    332
    Any pictures of the project yet? Sounds different and interesting. Would like to see how those front forks worked out.

    2005 CRF450R Alum Frame build done, switching to inverts.
    86 trx250r fmf fatty fmf q k&n v force reeds gold valve rear shock with eibach spring.
    86 atc250r stock sand only
    88 NX250 mint rainy day
    85 kawi js550 stand up basicly stock
    87 kawi js550 scary fast for a stand up

  5. #5
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30
    Yes mate i do have some pics taken on the digital camera - i will post the build so far asap

  6. #6
    Join Date
    Feb 2008
    Location
    hampshire
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    pics as promised dr350x

    quick mock up to see how dr350 swinger might line up with trx axle
    Attached Thumbnails Attached Thumbnails dr350x 002.jpg   dr350x 001.jpg  

  7. #7
    Join Date
    Feb 2008
    Location
    hampshire
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    30

    dr350x front end

    fortunately for me the standard 350x axle fits perfectly into dr forks 43mm and easy to work with - only issue is small gap at one end which can be easily remedied with a spacer- Also the dr axle clamps needs shaving to grip axle end-
    Attached Thumbnails Attached Thumbnails E BAY 5 007.jpg   E BAY 5 004.jpg   E BAY 5 006.jpg   E BAY 5 005.jpg   E BAY 5 012.jpg   E BAY 5 008.jpg  

    E BAY 5 011.jpg   E BAY 5 010.jpg  

  8. #8
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30

    more pics tri z front wheel crf 250 caliper

    350 x hub and rotor turned out to be bent, never mind got a complete triz wheel tyre and hub for 25 on e bay and bolted straight up - used a 2004 crf 250 front caliper to bolt to dr350 forks and it also lined straight up although custom disc may be needed as the pads only touch by half an inch- unless you guys no of a bigger discs that will fit tri z hub?
    Attached Thumbnails Attached Thumbnails e bay55 013.jpg   e bay55 012.jpg   e bay55 011.jpg  

  9. #9
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30

    dr350x contin

    finally got hold of a dr350 on e bay - it was a stolen recovered supermoto, which when i stripped it came with full adjustment ohlins rear shock,keintech engineering air box and kouba links and oversized titanium front pipe- havent stripped the engine but would expect to find a wiseco or similar under there
    - heres a few pics- have sent off for a log, then will register the bike later in the summer- if all goes well

    came across my first real problem - have been trying to find out why a 400ex swinger wont support a trx 450r axle and it because the rear clamp in 5mm to long- but that needs to be machined anyway to even stand the slightest chance of lining up the sprockets with a 450r carrier fitted - check out the photos and offer any ideas please.ie could the front sprocket be moved out slightly to help , could i run a spacer on the rear to move the sprocket in a bit , any feed back would be helpful
    Attached Thumbnails Attached Thumbnails nick latest 003.jpg   nick latest 004.jpg   nick latest 007.jpg   nick latest 008.jpg  

  10. #10
    audioworks04's Avatar
    audioworks04 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2008
    Location
    Kansas City, KS
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    332
    On my crf conversion I had to flip the front sprocket inorder to get my alignment to work out. I dont know how the dr motor is set up but it wouldnt supprise me if the front sprocket also has an offset that would allow you to simply flip it over and see how close that gets you.

    2005 CRF450R Alum Frame build done, switching to inverts.
    86 trx250r fmf fatty fmf q k&n v force reeds gold valve rear shock with eibach spring.
    86 atc250r stock sand only
    88 NX250 mint rainy day
    85 kawi js550 stand up basicly stock
    87 kawi js550 scary fast for a stand up

  11. #11
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30
    thank you- finally some feed back - i tried that today but looks likes still about 10mm out but macine down swinger 5mm and re-check - 250r yorks are at the machinists and should arrive monday - pics soon

  12. #12
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30

    dr350x

    Got the 250r tripples back from the machinist and he accidently cut into the first few threads of the bolts holes - pissed me off but had to move with it as this tripples over here are very rare. Decided to turn the clamp bolts down by 2mm on the lathe and the forks slotted right it- I decided to fit the front wheel and with a few spacers and a dr350 front disc mated to the triz hub - everyhting should bolt right up . PIcked up 2x trx 9inch rear wheels - so now all need to get down is front and rear fenders and lots of powder coating - Will keep you posted.
    Attached Thumbnails Attached Thumbnails more dr350x 2 003.jpg   more dr350x 2 006.jpg   more dr350x 2 008.jpg   more dr350x 2 007.jpg   more dr350x 2 004.jpg   more dr350x 2 009.jpg  


  13. #13
    Join Date
    Feb 2008
    Location
    hampshire
    --
    30

    dr350 x conversion cont

    a few more pics looking like a bike now- just waiting for tank to be painted, front brake to be sorted
    and front fender to arrive -
    Attached Thumbnails Attached Thumbnails mobile nw 022.jpg   mobile nw 023.jpg   mobile nw 021.jpg   mobile nw 004.jpg   mobile nw 005.jpg   mobile nw 024.jpg  

    mobile nw 007.jpg   mobile nw 008.jpg   mobile nw 020.jpg   mobile nw 006.jpg   mobile nw 019.jpg   mobile nw 025.jpg  


  14. #14
    Join Date
    Jan 2007
    Location
    NC
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    907
    Looks ok but do you want that much rake on the front? If not, if you swap your forks around it should bring the front tire closer to the frame - help the rake. Also if I remember right the 250r triples have rake built in them - you might be able to try 200x or 350x triples to bring the rake back even more. Did you get the sprockets lined up? How?

  15. #15
    Join Date
    Oct 2009
    Location
    monteagle, New Brunswick, Canada
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    40
    looks pretty good you need to get that rake fixed tho

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