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  1. #1
    RC Competitor
    Join Date
    Jan 2015
    Posts
    70

    Converted Slash 4x4 Handles Much Better at Speed than XO-1?

    Hoping someone can help me figure out how to make the XO-1 more manageable when going 65+ MPH. Iíve read every post and have implemented pretty much every suggestion, but still a handful.

    X0-1 Setup
    - Hobbywing Max8 paired to 2200kv motor ( punch control turned down to 1)
    - 90% of front end slope removed (via aluminum steering setup and shims)
    - gearing 22/46
    - Power HD 20kg servo
    - GRP S3 tires (1/8 scale)
    - front diff 200k fluid
    - rear diff 30k fluid
    - TSM set to 70%
    - Steering expo at 35%
    - camber is 1 - 2 degree all around
    - front toe in is about 1%
    - red stiff Traxxas springs front and rear with a fair amount of preload

    Itís really twitchy and is extremely difficult to keep straight, especially on power where it pulls left. Conversely, Iíve converted my Slash 4x4 to an on road machine, no TSM and it tracks like a dream. Can hit 80mph and itís dead easy to keep straight.

    Slash 4x4 Setup
    - LCG chassis
    - Castle Mamba X paired to 2050kv motor ( punch control turned down to 1)
    - 90% of front end slope removed (via aluminum steering setup and shims)
    - gearing 22/38
    - Power HD 20kg servo
    - GRP S3 tires (1/8 scale)
    - front diff 50k fluid
    - rear diff 30k fluid
    - TSM - not available on RX
    - Steering expo at 35%
    - camber is 1 - 2 degree all around
    - front toe in is about 1%
    - white Traxxas springs (blue stripe) front and rear with a fair amount of preload

    Any thoughts as to what Iíve missed? Thanks.

  2. #2
    RC Qualifier
    Join Date
    Oct 2015
    Posts
    948
    This car is not an easy car to get tracking straight. Have you corner balanced your car and checked your bearings?

    I think Traxxas would sell more of these if they posted a video of how to get these things to track arrow straight under power above 90 mph.
    Catch my videos at youtube.com/c/offworkhours

  3. #3
    RC Competitor
    Join Date
    Jan 2015
    Posts
    70
    Quote Originally Posted by drivejumpfly View Post
    This car is not an easy car to get tracking straight. Have you corner balanced your car and checked your bearings?

    I think Traxxas would sell more of these if they posted a video of how to get these things to track arrow straight under power above 90 mph.
    Thanks for the suggestions. Ive checked the bearings and their fine. Havenít considered corner balancing, but Iím going to give it a go. Whatís the easiest way to do it, use 4 digital scales, one at each corner?

  4. #4
    RC Qualifier
    Join Date
    Oct 2015
    Posts
    948
    Yes that is the way to do it
    Catch my videos at youtube.com/c/offworkhours

  5. #5
    RC Competitor
    Join Date
    Jan 2015
    Posts
    70
    Thanks for the advice. I havenít yet tried weight balancing as shortly after this post I discovered my TSM was not actually working. Fixed that and suddenly the XO1 was tracking 150% better. It actually became drive-able.

    It still baffles me however, that the converted , lowered Slash 4x4 without TSM tacks so much better at speed. Iím wondering if the XO1s longer wheelbase amplifies the twitchiness of the steering?

    Anyway, much happier now. Was just at my LHS and purchased a 29t pinion. Should be good for about 115mph based on my specific setup. If only the Spring could come sooner!

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