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Thread: *** 1978 ATC 90 "3D" Dickson Design & Development Mono Frame ***

  1. #1
    Join Date
    May 2013
    Location
    Brownsville, Tn.
    --
    1,120

    *** 1978 ATC 90 "3D" Dickson Design & Development Mono Frame ***

    Hey guys wanted to share me and my brothers third installment of Old School period correct ATC 90-110 trikes. As you may know when I came to 3WW it was to have a resource for finding and locating bikes and parts for the ATC90-110. Our goal was to build two race bikes and two dune bikes exactly as they were back in the day. The 90-110's had so many hipo aftermarket parts available due to the fact that for the first 10 years it was the only option when it came to trikes. It was a special time for us growing up in the hayday.

    This is Judson's "Race Bike" build. We always wanted a fully suspended 90-110 race bike. They were short lived due to the fact that about the time they began to catch on in popularity over the hard tail framed bikes Honda released the ATC250R in 1981. When that happened it pretty much killed everything 90-110.
    With that being said we still have always wanted one. They are very rare, especially the 3D version. It was specifically produced for racing. Some of the other versions from different manufactures were more for recreational use.

    Dickson Design & Developement (3D) was located in Nation City California and headed up by the one and only Bob Dickson!
    This is from an article in the Summer 1980 issue of 3Wheeling Magazine.

    Click image for larger version. 

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    The article states that the mono-shock design wasnt the first attempt to install rear suspension on a three wheeler, it was the first to be put into production.

    As in previous build treads I will first start with pics of the finished product then break it down into Chasis and Engine.
    This bike is also inspired by our last ATC110 race bike "The Blue Goose".

    Here is "The Blue Goose II"

    Click image for larger version. 

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    I think it came out Awesome! I have yet to ride it but Judson says it Hauls .
    Last edited by Joseph Farrow; 10-16-2016 at 05:16 PM.
    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

  2. #2
    Join Date
    May 2013
    Location
    Brownsville, Tn.
    --
    1,120
    Here are some of the specifics on the Chasis.

    Let's start at the front of the Bike.

    Click image for larger version. 

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    It sports Vintage Grab-On grips with Renthal Bars and MX Cross Bar Pad. Front brakes are a super cool NOS Hurst Airheart disc brake set up. Twist trottle is a Vintage Magura qtr turn with a NOS BAPP Mikuni Cable.

    Click image for larger version. 

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    Front triples are aftermarket with 31mm tubes. Front tire is a NOS Ohtsu 20x7x8 Odyssey Front Tire.

    Click image for larger version. 

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    Gas tank is from a 1979 XL 250. Rear fenders are Aftermarket and are unsure of mfg.
    Rear tires are NOS Carlisle Turf Savers 18x9.5x8 with aftermarket axle extenders and 32T Rear Sprocket.

    Click image for larger version. 

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    Aftermarket Cleated Foot Pegs as well as a HD Rear Axle Carrier.

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    Forgot to mention....I did the Paint on this Bike!

    Stay tuned for the Engine Specs next!
    Last edited by Joseph Farrow; 10-16-2016 at 05:32 PM.
    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

  3. #3
    Join Date
    May 2013
    Location
    Brownsville, Tn.
    --
    1,120
    Okay Engine Specs!

    1978 ATC 90 Motor built to 180cc.
    Head ported and polished with lightened and polished valves.
    Lightened and Polished Rocker Arms.
    Vintage 90 Pauter Cylinder with 6mm spacer for Long Rod Stroker Crank.
    Modified 61.75mm Honda CB 750 Piston
    110-61mm Helm & Son Stroker Crank
    Oil Bypass System
    Lightened Flywheel

    Click image for larger version. 

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    Quick Change Sprocket Assembly
    Manual Clutch
    Vented Helm & Son Dip Stick
    PK Intake with 26mm Mikuni Carb and K&N Filter
    NOS BAPP Large Pull Start Handle
    Custom Bassani Pipe (Modified to fit Mono Frame)

    Click image for larger version. 

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    Again wanted to share. I think this is a really neat bike. It is just about as Bad a ATC90 you could build for the track back in the Day!
    Would also like to Thank several members here on this board for their help in making this bike happen. Without you guys it wouldn't have been possible.

    Stay tuned for my final installment of our 90-110's.....The Team BAPP Replica Bike Build coming soon.
    Last edited by Joseph Farrow; 10-17-2016 at 09:54 AM.
    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

  4. #4
    Join Date
    Mar 2013
    Location
    Central PA
    --
    2,370
    Your builds are always an inspiration to get my semi suspended pauter finished. But finding anything 90/110 racing related on the east coast is hard.

    I wish we could see more bikes like this on the track at TF every year. By far my favorite builds.

  5. #5
    Join Date
    Sep 2009
    Location
    Suring Wisconsin
    --
    949
    Very nice, love the 90 builds.
    Rebuilding and riding trikes everyday and lovin every minute.


    http://www.3wheelerworld.com/showthr...light=pipeline

  6. #6
    Join Date
    Jul 2009
    Location
    South Florida
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    5,905
    Wow Joseph , you and Judson did a great job !
    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

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  7. #7
    ctk is offline Just Too Addicted Arm chair racerJust too addicted
    Join Date
    Nov 2007
    Location
    ohio
    --
    540
    Great pics, How would this trike compare to a 1983-19&5 Honda 200x, in relation to engine power and suspension and turning. On a mx and flat track
    Chris

  8. #8
    Join Date
    Mar 2013
    Location
    Central PA
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    2,370
    Might be a stupid question but I'm no expert on engines. Anyways, do you NEED to do the oil bypass for the cb pistons because the cylinders are basically bored to their maximum ability and re-sleeved? I don't recall ever seeing that and I've talked to veilmonkey in the past about buying a NOS CB piston kit (before the fire and everything else happened) for my build. Or does this just help with cooling and eliminate the need to tap in for a radiated oil cooler? Because I know these engines get HOT with that much work done.

  9. #9
    Join Date
    Jun 2013
    Location
    Oceanside, CA.
    --
    511
    Another great Farrow brothers creation, love the blue color. Lots of vintage parts. I don't believe ever seeing anyone race one that nice back in the day.

    "HJ" Click image for larger version. 

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    ’84 YT60
    ’85 350x (423cc) with ’81 XL500 head conversion
    ’83 XR500 (628cc) converted 3 Wheel hybrid
    ’73 CB750 K3 converted 3 Wheel hybrid
    ’86 TRX250R chassis XR650L engine hybrid
    ’89 TRX250R (stock )
    ’90 LT500 Quadzilla
    ’85 FL350 Odysses ( water cooled head )
    Lost (sold) but not forgotten ’80 ATC 110 (205cc on alcohol ) ’83 200x ( 222cc ) ’83 200x ( 185s eng ) ’85 350x ( stock )
    added to the collection recently, (2) '70 US90 Aquarius Blue and '74 ATC90 Daytona Orange

  10. #10
    Join Date
    Feb 2011
    Location
    San Marcos Ca.
    --
    612
    Great job as always !!!!!!!!!!!! Judson has sent me pic's as it has been built. I need to get mine done now.That way we can tear it up in dunes together !
    * 1970 US90 Red
    * 1978 ATC 90/180 Helm&Son, Bandito /3D springer. ( Spaghetti Winder )
    * 1978 ATC 90/128 Bandito / Ace Williams Springer.
    * 1980 ATC 110/ ? Helm&Son, Dickson Full Suspended
    * 1981 ATC 110 MTC Full Supended
    * 1985 ATC 200s
    *1986 ATC 250R/310 2"+ Westcoast Swinger

    http://www.ebay.com/usr/jwheeler760

  11. #11
    Join Date
    Mar 2010
    Location
    Slidell, LA
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    4,539
    Good heavens, that is sick

    It's about time for another build thread to go into top tier. I think this one deserves it. Lemme see about getting it moved.
    Feedback for yaegerb: Click Here

    Need something blasted or polished or both? Send me a PM

  12. #12
    Join Date
    Jan 2009
    Location
    ohio
    --
    1,468
    Looking good as usual you guys do a good job. The cb piston peeked my interest what all is involved in using those pistons?
    If its on the internet its got to be true they can't put any lie's on the internet

  13. #13
    Join Date
    Jan 2010
    Location
    Sulphur Springs,Texas
    --
    906
    Amazing work! That is a head turner. It's crazy to think those little guys were used to race.
    • 1985 Honda 250SX
    • 1985 Honda 350X
    • 1985 Honda 350X
    • 1986 Honda 250R



    “I Love The 350x. It’s So Bad”

    My Feedback Link!

  14. #14
    Join Date
    May 2013
    Location
    Brownsville, Tn.
    --
    1,120
    Quote Originally Posted by ctk View Post
    Great pics, How would this trike compare to a 1983-19&5 Honda 200x, in relation to engine power and suspension and turning. On a mx and flat track
    Chris to answer your question the 180's ran very well. In my opinion they were pretty equal to a built 200x when it came to power to weight ratio. These bikes are alot smaller and lighter than the 200x. My brother and I actually raced against 200x's and 250r's on our 180's and did very well. I think a lot of it had to do with riding ability but compared to a stock 90-110 you would be very supprised at how fast and how much torq these thing put out.
    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

  15. #15
    Join Date
    May 2013
    Location
    Brownsville, Tn.
    --
    1,120
    Quote Originally Posted by Ghostv2 View Post
    Might be a stupid question but I'm no expert on engines. Anyways, do you NEED to do the oil bypass for the cb pistons because the cylinders are basically bored to their maximum ability and re-sleeved? I don't recall ever seeing that and I've talked to veilmonkey in the past about buying a NOS CB piston kit (before the fire and everything else happened) for my build. Or does this just help with cooling and eliminate the need to tap in for a radiated oil cooler? Because I know these engines get HOT with that much work done.
    The latter is correct. It helps with cooling as well you can see you are getting oil to the head. These engines do run very hot and the oil comes from the oil pump and runs up the cylinder stud to the top of the engine. You could still use a finned oil cooler with this set up if you like for extra cooling.
    Check out where the oil gallery runs in this "Cheater Cylinder"....the old sleeve is bored completely out and a new larger one is pressed in. The out side of the sleeve is actually part of the oil gallery. lol

    Click image for larger version. 

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    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

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