• Yokomo YZ-834B Wonder Dog Fighter

  • Yokomo YZ-834B Wonder Dog Fighter

     

    YZ-834B SE Limited Edition

    Yokomo made this nice chain drive 4WD buggy at 1983 when Hirobo made 44B which was belt driven. YZ-834B was the 1st IFMAR winner at 1985. and we know who was the driver.

    the 1st version came with flexable Kydex chassis and rear mono shock. also with front mono shock as you can see.

     

    later chassis has a small bumper and batter chassis for race. but the material is still same. Kydex

     

    RPS SE’s fiberglass chassis is very hard and tweak-proof. RPS SE came with lots of improved parts like shocks, gears, axles, and nice tires.

    Delta and Trinity made the chassis as well. and this Trinity is still the best one to me.

     

    Wikipedia link
    The manual is here
    pics of original ’83 Wonder Dog Fighter http://tw.myblog.yahoo.com/bs86007/article?mid=61
    a few more pics from my Korean (한글) blog

     

     

     

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  • YZ-834B roll bar and Trinity chassis dimensions

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    Trinity chassis’ front end is rather short for mounting bumper. RPS front end is 5mm longer than trinity’s.
    it’s a good idea to add extra 5mm at this chassis if you want to make your own
    everything is same except for the front end
    Trinity Chassis  = 300mm
    RPS Chassis = 304.8mm  =12″ (extended for bumper mount)

     

     

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  • YZ-834B box art gold arms

  • the box art gold arms look great. I asked to my friend pargu2000 (http://stores.ebay.com/pargu2000) to make them. they look so great. and the handling is much better than ever.  we made 20 sets. and sold the rest of them on ebay

     

     

     

     

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  • YZ-834B prototype images

  • got the pictures from my RC buddy yesterday. unfortunately, I didn’t get any information of the source where the pictures came from

    Magazine: Model Channel
    Issue: May, 1983
    Title: RC Car – New Kit(s) Info

     

     

     

     

     

     

     

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  • YZ-834B axles and dogbones

  • Yokomo YZ-834B came with few weak spots like most 80’s RC vehicles had some.I have made the list on wikipedia before. pleas check this http://en.wikipedia.org/wiki/Yokomo_YZ-834B and want to add some pics for someone who still runs this old and nice buggy

    the early alxes had problem with strength. and that made the axles like the right one in he picture. you can improve the strength by DIY heat treament. use your gas stove then watch it until it turns to red. and put it in the water quickly. it worked like the left one
    from left to right – hotdog4 rear axles, rear bones from AYK,
    and front dog bones

     

    hotdog4’s rear axle could be a good replacement. I’v been using them for years. and I noticed they won’t ever be broken or crushed

    the dogbones were from AYK Race Prep. it’s hard to find now. but it worths to get and run with them

    the length of RC10 and 834B front dog bones are identical. but the diameter of the pins are not. you may use RC10’s if you can’t find the orginal or AYK’s. but you need to trim the pins. maybe the heads as well

    Yz-834b stock front axles

     

    hardened front axles came with later 834B’s and RPS SE

    stock front axles were not strong neither. it had poor resistance to abrasion. the oneway bearing made worn it out like the alxes in the picture

    Later Wonder Dog and RPS SE came with stronger hardwares include this axle
    I pulled this off my runner which has been racing  for years. it still looks like new

    RPS SE C-2 bag picture from ebay
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