+ Reply to Thread
Results 1 to 11 of 11
  1. #1
    RC poster
    Join Date
    Oct 2010
    Posts
    14

    pitch M2.5x0.35 or M2.5x0.45 for the MERV

    Hello anyone know what pitch does the merv screws have of the M2.5 mm ones? I need to make a bigger hole in the hitec servo horn to fit the steering link to my new 5085MG and not sure which screw hole cutter to get.

    For metric M2.5 they come in 0.35 and 0.45 pitch. I guess I'll have to test it out unless anyone can confirm that.

    Thx in advance

  2. #2
    RC Qualifier
    Join Date
    Dec 2011
    Posts
    514
    I'd let the screws do that themselves... the plastic is soft.

  3. #3
    RC Qualifier
    Join Date
    Feb 2012
    Location
    Poconos
    Posts
    301
    I think I just took a smaller drill bit and used that to open the hole some. Then let the screw cut through the rest as cobra is recommending.

  4. #4
    RC poster
    Join Date
    Oct 2010
    Posts
    14
    the servo horn I got is made from dural, so the screw won't cut it ;o]]

    the plastic servo horns (got a set of hitec horns from *********) were too big even after I have shaved as much unneeded material as possible....so I got the metal one that fits really nice but the screw hole is probably M2 and not M2.5 so I need to make it bigger so I can fit the servo linkage via the original ball screw.

  5. #5
    RC Turnbuckle Jr.
    Join Date
    Mar 2012
    Location
    so cal
    Posts
    9,245
    . Forgot the brand but mine clamps down with two bolts works great. You should be able to get the plastic one working though
    Last edited by 50togo; 04-30-2012 at 09:39 AM.

  6. #6
    RC Turnbuckle Jr.
    Join Date
    Mar 2012
    Location
    so cal
    Posts
    9,245
    I also used a nut and bolt didn't want to rely on just a bolt

  7. #7
    RC poster
    Join Date
    Oct 2010
    Posts
    14
    I already did the bigger hole in the dural servo horn and if anyone wants to know the traxxas servo linkage has 0.45 pitch....made a new hole in it and it fits nicely....I used a 3 step manual cutters ($3) and used 2.0mm drill to prepare the hole for the cutting (also got a 2.1mm drill recommended for the preparation but didn't use it in the end)...for cutting into dural lubricate the cutter with soapy water

    thx for the tip with the nut, too bad I read it after I got home from the shop...it didn't occur to me that I could use it although I had the nut in my hand when I was trying to find out the pitch on the original screw....now when I see how much of the screw is sticking out through the servo horn I guess it would make sense to put a nut on it so it doesn't hold all on the screw socket...well threadlock will have to do till my next hardware store visit ;o]

    the plastic one was much much thicker and wouldn't fit at all behind the servo guard...even with as much as possible shaved it would barely fit...the dural one is much much smaller and thinner so it fits great behind the servo guard and it only cost few bucks
    Last edited by m4t3y; 04-30-2012 at 05:35 PM.

  8. #8
    RC Turnbuckle Jr.
    Join Date
    Mar 2012
    Location
    so cal
    Posts
    9,245
    as long as it works -should hold up fine!

  9. #9
    RC Qualifier
    Join Date
    Jan 2012
    Location
    north van canada
    Posts
    512
    nut and bolt
    Powered by Castle

  10. #10
    RC Turnbuckle Jr.
    Join Date
    Mar 2012
    Location
    so cal
    Posts
    9,245
    Looks nice but I would run the stock servo saver.

  11. #11
    RC Turnbuckle Jr.
    Join Date
    Mar 2012
    Location
    so cal
    Posts
    9,245
    I lost traction at around 50 went right into the curb tire first. Servo saver took the hit toe link got pulled out of the servo saver nothing else bent or broke if it was aluminum would cost me more than 12.00 bucks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts