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Thread: 1985 ATC 250R seat, tank transition gap

  1. #1
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    1985 ATC 250R seat, tank transition gap

    Wazzup guys, I am very particular about the way things are on my bikes. Every trike I've seen out there has this hideous gap between the seat and tank, almost like someone pulled up on the front of the seat. Yes, it is hooked in on the front posts, and yes all the bushings are there, as well as all the rubber pads. This must be a syndrome that all ATCs, at least all Hondas have. Anybody know what needs to be done to make it go away?
    previous rides: 87 KX250, 86 KTM500, 84 XR500, 97 XR400, 96 RM250,96KX250,
    97CR250, 98YZ400F, 2000YZ426F, 2003YZ450F Secondary: 02 TTR125, 03 Blaster, 02 XR50 Watercraft:SeaDoo XP787 Snowmobiles:87 indy Trail, (2) 88' indy 400s, (2) 89' indy 500s, (1) indy 500 EFI. (1) 93' 650 RXL, 02' RMK 800 and a 85' 250R

  2. #2
    clong's Avatar
    clong is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I am also curious as my 200X seat shoots to the sky. Anyone have any ideas.
    1986 Honda 350X - stock w/ supertrapp, K&N, DG wheels
    1985 Honda 250R - OEM fresh trailer queen, but I'll ride it
    1985 Honda 250R - "rider" but still pretty original

    2005 Yamaha YZ250 - stock
    2007 PW50 - stock

    2005 Chevy Silverado crew cab - red, 5.3L

  3. #3
    Join Date
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    Boy, I think I can help with the cause, but not the cure. I noticed that on my 200x the seat gap was pretty good until I installed a new seat cover. The cover actually pulled on the base so much that it lifted it up. I was then thinking about it and figured that seat pan is 20 years old and probably just not strong enough to hold shape anymore.
    I planned on fabbing a metal brace along the bottom of the seat base to hold it down in position but ended up selling it first. That would be my suggestion, though. Also, if your rubber seat mounts get worn down in the back, that may cause it to lift the front when you clamp it on.
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  4. #4
    clong's Avatar
    clong is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Good points. I think its the seat pan slowly changing shape from people sitting in it for 20 years. The only option is a bracket.
    1986 Honda 350X - stock w/ supertrapp, K&N, DG wheels
    1985 Honda 250R - OEM fresh trailer queen, but I'll ride it
    1985 Honda 250R - "rider" but still pretty original

    2005 Yamaha YZ250 - stock
    2007 PW50 - stock

    2005 Chevy Silverado crew cab - red, 5.3L

  5. #5
    Join Date
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    That's not it. 200x's did that when they were brand new after only a couple of months of riding. I was never sure what caused it.

  6. #6
    VABCH350X is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I read a post on here a long time ago about someone having success in re-aligning his seat pan by removing the seat cover and foam, then carefully heating and reshaping the plastic seat pan. How permanent a fix this would be I do not know, but it sounds like it may be worth a try if you've nothing to lose.
    86 Honda ATC350X
    86 Honda TRX70
    02 Honda TRX400EX
    03 Kawasaki KFX80
    82 Honda CB900F

  7. #7
    clong's Avatar
    clong is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I don't think I could stomick taking off a OEM seat cover, plus I think the seat cover would disintegrate.
    1986 Honda 350X - stock w/ supertrapp, K&N, DG wheels
    1985 Honda 250R - OEM fresh trailer queen, but I'll ride it
    1985 Honda 250R - "rider" but still pretty original

    2005 Yamaha YZ250 - stock
    2007 PW50 - stock

    2005 Chevy Silverado crew cab - red, 5.3L

  8. #8
    Join Date
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    Quote Originally Posted by Dammit!
    That's not it. 200x's did that when they were brand new after only a couple of months of riding. I was never sure what caused it.
    Sure it is. No matter if it happened in a day or 10 years the seat pan has to move in order for the seat to come up.
    '02 Honda 416ex - A seasoned blend of 11 herbs and spices
    '04 Honda Recon - The yard machine and snow plow
    '88 Honda CR250R - Another chapter in my torrid all terrain affair

  9. #9
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    well mine has always looked good. i think it is because of the new fenders im not sure i dont remember what it looked like before the diff fenders. here is a pic from a while back it is being restored right now.
    Attached Thumbnails Attached Thumbnails vartiak.jpg  
    1974 atc 90 project underway cuzzztom

    1985 atc 110 for sale

    84 200s all original got off the first and only owner
    new carb
    maybe putting my 200x cam in it but not sure

    old trike
    1985 200x
    12.1 piston
    oil cooler kit
    white bors cam
    super trapp exhaust
    uni clamp on air filter
    350x front end

  10. #10
    clong's Avatar
    clong is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Someone should make a tension bracket and sell them on ebay and they would make a killing
    1986 Honda 350X - stock w/ supertrapp, K&N, DG wheels
    1985 Honda 250R - OEM fresh trailer queen, but I'll ride it
    1985 Honda 250R - "rider" but still pretty original

    2005 Yamaha YZ250 - stock
    2007 PW50 - stock

    2005 Chevy Silverado crew cab - red, 5.3L

  11. #11
    Join Date
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    Yeah i have a fairly large tank gap myself...Never really thought about fixing it..
    Attached Thumbnails Attached Thumbnails DSCF0061.JPG   DSCF0062.JPG  
    1986 ATC 250R
    Ported w/ Cool head
    LED pipe and silencer.
    Vforce3
    Keihin PWK 38mm
    Works Ultra Cross Shock
    LSR +2 Axle
    American Star Racing +4 Swinger
    LED Intake
    Hi-Flite desert seat
    OEM clutch 89 upgrade
    2021 YFZ450Rse Rossier R5 Titanium Header AIS Delete FCI Vortex ECU


  12. #12
    Lots_Of_Nothing's Avatar
    Lots_Of_Nothing is offline So bombed at TF I needed both hands to hold my beer Teaching quads a lesson
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    on 250r's (not sure about anything else) the seat latch gets bent real easily and it makes the whole seat/fender assembly move up in the front, this is also what causes that "slop" (wobble) in the seat/fender assembly, take the latch off and lay the flat side on a surface you know is flat and check to see if bent, often the sides will bend up and the middle is the only part that doesnt bent (on the latch)... i'm talking about the part of that latch that is bolted to the seat.

    also, even though you have all the grommets, are you sure there not worn away at all? i know most of em i see have some wear and tear on them, i highly doubt its the seat pan, i'd check for bent brackets. (mine had a bent bracket, i got a new one and there was no gap at all)
    Give me no lip and I tell you no lie.

    -TF 05' , And cant wait till 06!


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