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Thread: Fujinon 10x70 I.P.D loose- what to do?

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    Default Fujinon 10x70 I.P.D loose- what to do?



    Hello

    The I.P.D. adjustment on my Fujinon FMT-SX 10x70 is loose. The I.P.D. will not stay set, gravity pulls both sides down to the smallest I.P.D. setting. This is one of the reasons I have not used them much lately.

    On the plate with the 1/4-20 tripod tap is what appears to be a very small set screw that looks like it takes an allen wrench. But alas, it's smaller than any allen wrench I have. Also on the plate are two round holes that looks like they take a spanner wrench.

    My guess is that loosening the set screw and tightening with a spanner wrench will fix the issue.

    Please help, how can I fix these?

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    I assume they have a 10 year or similar warranty... Have you tried contacting your dealer or Fujinon support just to check if you can do that?
    I don't have Fujinons (not through lack of desire though!!!), but most binos I have used have some way of tightening that joint either through a two-hole spanner wrench like you describe or a wide slot for a screw driver, so I assume you are on the right track.

    Good luck,

    Dean

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    I'm hoping one of these will fit the set screw.

    Wiha 35392 Metric Hex Key Set:0.7, 0.9, 1.3, 1.5, 2.0 mm
    http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

    Wiha 35393 Inch Hex Key Set, 5 Piece in Plastic Holder: .028, .035, .050, 1/16, 5/64 inch
    http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

    And then this: Neewer Professional Flat & pointed Tips DSLR Camera Lens Spanner Wrench
    http://www.amazon.com/gp/product/B00...=ATJ1HHEILSBYQ

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    Quote Originally Posted by aabottom View Post
    I'm hoping one of these will fit the set screw.

    Wiha 35392 Metric Hex Key Set:0.7, 0.9, 1.3, 1.5, 2.0 mm
    Wiha 35392 5-piece Micro Metric Short Arm Hex Key Set in Mini Molded Holder - Screwdriver Bit Holders - Amazon.com

    Wiha 35393 Inch Hex Key Set, 5 Piece in Plastic Holder: .028, .035, .050, 1/16, 5/64 inch
    http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

    And then this: Neewer Professional Flat & pointed Tips DSLR Camera Lens Spanner Wrench
    Amazon.com: Neewer Professional Flat & pointed Tips DSLR Camera Lens Spanner Wrench Repairing Opening Tool for Most Cameras: Camera & Photo
    I received the tools yesterday. The 0.9 mm hex key seems to fit the very small set screw. I managed to unscrew it about 1 or 2 turns, it's very tight.

    The spanner wrench does not work well for the spanner holes in the Fujinon. A 5/64 inch drill bit fits inside the Fujinon I.P.D. spanner holes, there are two of them. The Fujinon I.P.D. spanner holes are about 18 mm apart, on opposite sides of the 1/4-20 tap hole for the tripod mount. The spanner wrench has slotted ends (which do NOT fit in the Fujinon spanner holes) and very pointed tips (which are too small for the Fujinon spanner holes). I tried using the pointed tips, but the I.P.D. adjustment is already very tight. The spanner tool pointed tips slipped out the holes and scratched the face of the I.P.D. adjustment.

    I think I managed to tighten the I.P.D. adjustment some small amount, but it's still too loose.

    Now I'm looking for a spanner wrench with two 5/64 inch round (cylindrical) tips.
    Last edited by aabottom; 04-10-2015 at 05:08 PM.
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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    Quote Originally Posted by aabottom View Post

    The spanner tool pointed tips slipped out the holes and scratched the face of the I.P.D. adjustment.

    I think I managed to tighten the I.P.D. adjustment some small amount, but it's still too loose.

    Now I'm looking for a spanner wrench with two 5/64 inch round (cylindrical) tips.
    Can't you just file down the pointed tips so they fit the holes better?

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    Quote Originally Posted by DeanD View Post
    Can't you just file down the pointed tips so they fit the holes better?
    Yeah, I thought of that, but the taper of the point is too steep to get substantial material in the holes for a good grip.

    I wound up putting drill bits in the spanner holes and using a lever to turn the I.P.D. adjustment. #46 drill bit (measured at 2.045 mm diameter) is the largest bit I had that fit the hole. The I.P.D. adjustment was mighty hard to turn. Using a 5 inch long 5/16" allen key as the lever, I estimated about 50 to 100 inch*pounds torque required to turn the I.P.D. adjustment.

    I managed to turn it enough so that the I.P.D. movement friction is suitable to keep the optics from falling when tripod mounted.

    I might get a set of these in 1.5 mm and 2.0 mm pin diameters for $18 each.
    AMF Tools Catalog Page

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    Quote Originally Posted by aabottom View Post
    I wound up putting drill bits in the spanner holes and using a lever to turn the I.P.D. adjustment. #46 drill bit (measured at 2.045 mm diameter) is the largest bit I had that fit the hole. The I.P.D. adjustment was mighty hard to turn. Using a 5 inch long 5/16" allen key as the lever, I estimated about 50 to 100 inch*pounds torque required to turn the I.P.D. adjustment.

    I managed to turn it enough so that the I.P.D. movement friction is suitable to keep the optics from falling when tripod mounted.
    Well done!

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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    I've made small spanners by drilling through 1/2 in key stock(small piece of oak may work)with the proper size drill bits,drilled all the way through and then inserted 2 drill bits with the butt ends sticking out just enough to get good purchase--I've also used this technique to remove broken taps---Also because your not really spanning an obstruction a pair of right angle snap ring pliers may work,which Advansed auto parts will let you barrow for free with just a small returnable deposit--Heck they might have a spanner the right size in their loner tool program--Just my random thoughts--------ZX
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    Default Re: Fujinon 10x70 I.P.D loose- what to do?

    Quote Originally Posted by zxcvb View Post
    I've made small spanners by drilling through 1/2 in key stock(small piece of oak may work)with the proper size drill bits,drilled all the way through and then inserted 2 drill bits with the butt ends sticking out just enough to get good purchase--I've also used this technique to remove broken taps---Also because your not really spanning an obstruction a pair of right angle snap ring pliers may work,which Advansed auto parts will let you barrow for free with just a small returnable deposit--Heck they might have a spanner the right size in their loner tool program--Just my random thoughts--------ZX
    Thanks. I've been thinking about doing this. Although, I might also drill a 1/4-20 clearance hole over the tripod mount thread. Then I could hold the whole thing on with a 1/4-20 screw to avoid slippage.

    The issue is I don't have a tool to precisely space the holes properly.

    PS: When I tightened the I.P.D. friction with the drill bits, the torque was so high, it bent one of the drill bits.

 

 

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