Sena SMH-10 on AFX FX-39?

Discussion in 'Equipment' started by kbroderick, Jun 9, 2011.

  1. kbroderick

    kbroderick Long timer

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    Anyone mounted an SMH-10 on the AFX FX-39? I've had my helmet for a few days and gotten pretty psyched about it, but then I went to install the SMH-10 (earbud clamp, FWIW) and realized that the bottom plastic trim on the helmet prevents getting the clamp unit between the shell and the EPS foam. Furthermore, the shape of the helmet does not provide much in the way of surface area for the adhesive adapter.

    Anyone already solved this problem? I was thinking that I could notch the plastic trim, but it's fairly substantial and I don't want to compromise the helmet. The other possibility would seem to be a much thicker piece of adhesive to conform to the curved surface, but I'd rather have a mechanical attachment than an adhesive one if I can help it.
    #1
  2. NCK

    NCK Been here awhile

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    Did you ever figure this out out?

    I am in the exact same position as you...
    #2
  3. MisterMo

    MisterMo mach schnell!

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    Me too. :ear
    #3
  4. kbroderick

    kbroderick Long timer

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    Thanks for asking, I had been meaning to update the thread.

    My solution was to pull the thick, plastic-like pad off the inside arm of the clamp and place it on the outside. This did two things:
    1. It filled in some of the space created by the curve on the outside of the helmet.
    2. It allowed the clamp to fit over the outer shell and EPS foam (but under the comfort liner).

    Having taken another look at it after several rides, the clamp is clearly only grasping near the bottom of the shell, which is the situation I was trying to avoid by filling some of the space in the curve of the helmet. However, it hasn't come off or otherwise caused issues (and, uh, hypothetically, it may have been tested to about 85-90 MPH on a calibrated speedometer).

    I don't think it's an ideal way to mount the Sena, but I think it's the best compromise I can come up with for the AFX-39.
    #4
  5. jimbop

    jimbop Adventurer

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    Any chance you can post up some shots as I just ordered this helmet and I've been using my sena unit for a year now and will truly go nuts if I can't use it with my new lid. By the way the earbud unit is the bomb.
    #5
  6. enduro Dan

    enduro Dan Sticks and Stones™..

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    Any buzzing with yours?
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  7. Martincito

    Martincito Adventurer

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    I just got my Sena and a new AFX 39 helmet. I read this post before and i was a little concern about the installation. I just placed the unit all the way at the front where the plastic trim ends. The mic booms is too long so I had to accommodated in a not an elegant way but it should work. When I got the Sena I also ordered a different option for the mic.

    http://senabluetooth.com/products/acc_SMH-A0302.php

    I didn't use it on the AFX because I installed before it in my other helmet (Shark). But it seems that would be a perfect fit for the AFX 39. It comes with two mics and one is tiny and you can velcroed to the helmet.

    Anyways, I just finished the installation and I haven't ride with the AFX or the Shark yet, but it looks fine
    #7
  8. Ducken

    Ducken Been here awhile

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    I have mounted the Sena on two AFX-39's with success. Used an extra layer of Scotch double stick mounting tape to fill in the gaps created by the helmet shell shape / contour, using the sticky mount. I'll see about getting some pics going next weekend. Ken
    #8
  9. NCK

    NCK Been here awhile

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    I had some success mounting my sena to my FX-39 last night as well. I went to the hardware store and bought some hard plastic sleeve/spacers and longer screwes. Pic attached.

    Tips:
    - Used 3M Dual Lock at the top of the sena to make sure it stayed snug to the outside of my helmet. 3M Dual Lock is superior to velcro (including velcro "industrial strength" which is a joke in comparison)
    - The screws are M3 (metric) fine thread. My local hardware store had them, and I used I believe the 20mm length.
    - If you use a threaded neoprene sleeve/spacer (can't remember SAE or metric, just get to fix) you get additional girth which helps keeping the connection secure.
    - Add a locking washer on top of your washer on the outside of the screw. Keep it secure.
    - Don't overtighten!

    Cheers!

    Attached Files:

    #9
  10. DabsAlot

    DabsAlot Been here awhile

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    This is how I mounted mine.

    I notched out the black plastic trim on the bottom of the helmet with a cut-off wheel on an angle grinder.
    [​IMG]

    I could slip the backing plate between the shell and the Styrofoam. I had to straighten out the bend of the backing plate a little....not flat. Then on the outside of the helmet I installed some self-adhesive foam pads to space the bottom of the Sena out a little and make for a tight fit. This is the accessory mount with a mic w/out the boom.

    My speakers were touching my ears, so I cut out a hole for them in the Styrofoam:

    [​IMG]

    [​IMG]

    [​IMG]

    Steve
    #10
  11. Puddlemaster

    Puddlemaster n00b

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    Is it safe to cut foam out of the ear cavity like that? Just wondering if it would have any impact on the safety of the ear area?
    #11
  12. lacofdfireman

    lacofdfireman Long timer

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    Decisions, Decisions. Just picked up a Sena yesterday and an AFX39 so now I need to decide the best way for me to mount mine. Glad some of you have already pioneered some ways. So after using this for awhile anyone want to comment on how theres is holding up? Or what they would do different?
    #12
  13. kd5kuu

    kd5kuu n00b

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    Boulder, CO
    Just got my new AFX-39. It's a pretty slick helmet, but as noted, it is not that easy to mount the Sena SMH10. Thought I'd post up my solution for one more point of reference for fellow riders:


    A couple of things in this pic:
    1. I carved a pocket out of the EPS right where the ear resides. It's just deep enough to accomodate the speaker, and I can't feel it when wearing my helmet. I had to do this because there wasn't enough clearance.
    2. Note the nylon standoffs which are not part of the standard Sena package. I picked these up at my local Ace Hardware and cut them to size. On the Sena piece that goes on the outside of the helmet there are two little nubs which go inside the standoff, but only about 1/16" deep. On the Sena piece that goes inside the helmet I there are holes that are just the right size to put those black button head cap screws through. The only purpose of those screws is to keep that end of the standoff in place. The new screws don't provide any clamping force at all.
    3. I also picked up some longer socket head cap screws to allow the jaw to open up quite a bit wider. I reused the original stainless washers that came with the Sena.

    [​IMG]



    In this photo, you can see where I added some 3M foam mounting tape to fill the gap between the Sena bracket and the odd-shaped helmet shell. This isn't the high-bond stuff, just normal from the hardware store. If I ever wanted to remove the Sena, I should be able to clean the tape off.

    [​IMG]


    Hope this helps someone:D!!!
    #13