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Thread: Gyro for Merv

  1. #1
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    Gyro for Merv

    Have any of you guys used a Gyro in your Merv (or similar 1/16)? I mainly use my car on-road anywhere up to 65 mph and I'm interested in the possible added stability. On amain I see that the cheapest for $42, here: http://www.amainhobbies.com/product_...03B-Tail-Servo

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    i know that the above 90 mph rustler speedrunners use them and guys on the x01 too

    i never see anybody on the internet who used it on a merv

    looks interesting
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  3. #3
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    Whats a gyro?

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    I have a 401B gyro ($12) laying around, from my last order.
    I planned to use it mainly for off-road fun, but did not test it yet, as i have not found a mounting space/solution.

    If you start to experiment with a gyro I'm really interested in your findings.

    Using initials of a banned website to bypass the language filter is not an acceptable solution. Please just do not mention websites that the language filter blocks, bypassing the filter can earn you warning points

    Dadx2mj
    Last edited by Dadx2mj; 06-26-2012 at 10:02 PM.

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    a gyro is a box the size of a servo, maybe smaller that is conected to the receiver and servo AND is a big help to keep the wheels straigh when the car is doing donuts! Search youtube on "gyro for Rc" and you will understand.

    When a gyro is conected and you grab the car by hand ON, and turn (swing) the car left to right the servo works on reverse, moving the wheels counterwise....

    let us know if anyone used it on a merv!!
    it should give good things... or even worse! lol

  6. #6
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    i think thats the main prob they are not used on a merv

    the space and were to mount it


    if it could be its awesome and gives outstanding handling at high speeds
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    The empty servo spot would be great.

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    you got a good point there Cobra
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  10. #10
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    I just ordered the same one you've got, CMD-J. It should fit in the empty servo spot with some double sided tape.

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    Yeah, the second servo spot might be the best idea. I just dont like to relocate my powerswitch again atm, plus that's the spot i usually cram my parallel adapter/excess wires into.
    The gyro is a bit bigger then you might think from the pictures at HK and you have to mount it on end to work.
    So you need some height to spare too, thats where it conflicts with my power wires.





    Back to the drawing board, rethinking my wire routing it is i guess.

    Oh and be carefull with doublesided tape. From what i read a gyro should be decoupled from the chassis, some adhesive foam thingy might be better for mounting.
    Last edited by CMD-J; 05-14-2012 at 02:14 PM.

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    I'll figure out something. My wires are routed to the rear and my on/off switch is mounted straight on the ESC, so I've got that whole area to play with. Also, my double sided tape is like a thin foam pad. It's only $15 so it's worth the try. Wow, we have the same thermometer.

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    i am gonna follow this one 4 real

    let me know how it will work out guys

    and show us some building stuff when you do this
    Last edited by Mossie; 05-14-2012 at 03:05 PM.
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  14. #14
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    Ok, @home now, got a chance to play a bit, should fit on the second servo spot.







    If i got some spare time, i might try to mount and test it over the next weekend, no promise though..
    Last edited by CMD-J; 05-14-2012 at 04:08 PM.

  15. #15
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    Quote Originally Posted by CobraWasHere View Post
    ...It's only $15 so it's worth the try. Wow, we have the same thermometer.
    That was my thought too.

    Dont wanna go to far offtopic, but regarding the temp gun:

    I only have it like 6 weeks or so and I'm a bit shocked by the temps i see on my Velineon SB.
    Never managed to get that EZRun 60A clone above 130F, usually its only about 100F.
    BUT the motor shoot up to 180-190F sometimes even higher with Dirt Hawgs on 55/26 and 2S/20C Zippies in parallel.
    I'm down to 55/21 for now and getting 150-160F on the motor, but that gearing is less fun..

    I installed the center-diff with 100K some time ago and got the feeling the makes the motor run hotter? Or its the ******* ESC, i run a HK-100A before.

    Anyways, what i want to ask: What temps are you getting on your NEU 1110-1Y on 2 and 3S with Dirt Hawgs?

    I'm eyeing that motor for quite some time, but the the price and the huge vent holes keeps holding me off. As I like to run on light dirt/sand a lot.

    Thanx J
    Last edited by CMD-J; 05-14-2012 at 05:19 PM. Reason: typo

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    Yesterday I ran my Dirt Hawgs geared at 31/45 or 28/45, I can't remember. On 2s I read up to 150F after a while. I don't even bother to use the dirt hawgs with 3s... only for my foams. I don't like the way the merv wheelies with rubber tires. With the foams it just scoots like its tail is on fire.

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    Thank You!

    Sounds good. 50/25-28 with Dirt Hawgs on 2S for 2-4 packs is what im aiming at.

    With a Center-Diff@100K (feel like i could use even harder oil) and reasonable low motor timming and low-medium startup power on the Esc plus lowered/limited shocks i can control the wheelies on 3S somehow, its a fast powerslider with used Dirt Hawgs onroad.

    But i know what you meant and the front balloons if too trigger happy are annoying.

    Arc or NEU, have to think about it more..

  18. #18
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    I was hitting 150 on my motor with a Traxxas heatsink with some hard bashing and tried out a muchmore racing ultra high speed fan with same type of bashing motor was running 110!

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    CMD, doesn't the gyro need to sit horizontal in order to function right? I would think that in that configuration it would be reading the pitch of the car, like tipping forward or backwards. or is it 360 degree capable and it just calibrates itself to it's orientation ever time it's powered up?
    fix, run, break, repeat

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    BTW take a look at the comments on the hobbyparts page

    about drving a drag in straight line at a parking lot

    it can be done with a gyro in one straight line

    i still become more and more interested in this Gyro stuff
    and thinking about ordering one myself
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  22. #22
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    I can't wait until mine comes in. ********* already shipped it.

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    After further investigation bleeder is probably right! - The gyro has to be mounted flat down, feeling a bit stupid now..
    Dunno, how i got the idea it has to be mounted on edge. I swear i saw a pic once where somebody mounted it that way..

    I got the initial gyro idea from a thread on a german rc-forum. The guys there experimented with a gyro on the throttle too. To get "mid-air control" or something crazy like that, cant remember all details. I recall it didnt worked out.
    But they had great results with the gyro on the steering channel onroad and offroad.

    Thanks for the links Mossie! The video on hobbypartz is unfortunately not viewable from germany, (blocked due to copyrighted music, thanks to GEMA). But i could see the the YT video.

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    I'm going to mount mine in the spare servo spot. I'll use something between the chassis and the gyro to minimize vibrations, and i'll use foam double sided tape between each surface. I'm going to need a futaba splitter to run the gyro and my LEDs at the same time.

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    i did read that how you mount it is important Cobra
    and you need to tryout whats best

    i will follow this topic and seriously thinking about doing a gyro tryout myself
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  26. #26
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    also ordered one a min ago

    Pro GD-4 RC Car GD4-Gyro
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  27. #27
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    Keep this updated. I want to know how well this works.

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    me too me too
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  29. #29
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    will do !!!! order will be shipped today but takes 7 to 14 days to get to the Netherlands
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    I want mine NAO

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    i think you will be the first one CObra with try outs and conclusions

    from what i have been reading is that a Gyro will give you a more and better straight line at a drag or speed run

    we do like to do both and your a speed runner too from what i have been reading

    so once again let me know how it work out when you get your Gyro
    keep me posted M8 4 real

    my big respect to you master
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  32. #32
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    Guys so what happened with the gyro???? Did it work??? Say something please

  33. #33
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    i am still waiting on my Gyro , so i can not tell you one single thing about it

    i will when it arrives and i install it

    i think , no i know Cobra and cmj will do the same 4 real
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    I received a gyro from hobbypartz yesterday, installed in the extra servo spot.

    Paired with a savox servo (which was too small to fit without a small bracket, but works great), it seems to help going down the road and hitting misc bumps and such.

    I did encounter some wobble when I did any quick steering, though I didn't have enough time to mess with the gain to see if it would fix it as my batt died. I also only tried on dry pavement, I'll try on wet pavement later if this whole mess south of Florida keeps moving north.

    I'll get some pics up later when I get back home.

  35. #35
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    I would think it would need to be centered in the chassis to work properly

  36. #36
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    this is sounding good i wonder if it would help you from rolling it any?

  37. #37
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    I would think it would help keep it planted on the ground. When I roll on pavement it's because I lose traction and slide the rear out.

  38. #38
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    Quote Originally Posted by 50togo View Post
    I would think it would need to be centered in the chassis to work properly

    I don't know enough about RCs to know.

    Where is the center of rotation in a MERV?

    Dead center in the chassis, between the front wheels, or somewhere in between?

    ETA: do these gyros measure angular velocity/acceleration?
    Last edited by Nulllogik; 05-22-2012 at 10:41 AM.

  39. #39
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    Heres the pic:

  40. #40
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    the story with centered to the chassis is not true
    i have been doing lots of home work on the gyro before decided to buy one

    almost every gyro can be mounted like above pic and in some case like the HPI on you even can mount it on the site of the chassis if you want

    Great stuff Nulllogic and it seems like we got the same Gyro
    i am still waiting for mine do !!!

    BTw to answer your question about the acceleration angele is NO
    a Gyro is measring sideway force and not downforce
    there are some gyro who can do bot but then you got a gyro for helistuff an digital which are 300 euro
    an a lot bigger then this one you got now.

    try to tweak it and look at you tube movies i have seen lots of vids there and it never worked out the first time and need to tweaked out and try outs
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