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Old 2013.12.15, 01:55 PM   #1
arch2b
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Mini-Z R.I.S Motor Mount For 98mm

bought this to address my problem of the self centering damper kit not matching up well with a PN motor mount.

the instructions include directions for mounting a brushless motor only. the website product information states these are compatible with 130 motors, both screw and non screw variety.

my question is, how does one actually install a 130 motor? in putting one in, the bottom cross bracing hits the can before the mounting holes lineup. it's not even close really as the bearing point his the mount before you get both holes flush with mount. the vertical orientation of the screw points don't allow for tiling the motor enough.


so, anyone out there with this able to explain to me what i'm doing wrong with this?
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Old 2013.12.16, 09:03 AM   #2
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Arch, hard to tell without having the part... but you may need to lay the motor flat, and use the included adapter to adjust mesh. Let me know if that works.


Since I haven't seen the brushless motors/mounts yet, I don't know if this is solely for a brushless motor, but I would think that the mount should position a 130 flat.
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Old 2013.12.16, 09:11 AM   #3
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as EMU has subsequently pointed out, this is incorrect.
that is simply a spacer or bracket for BL motors and of no value for anything else that i can discern. it has no adjustability with screw point location anyway so it maintains the same motor alignment regardless.
you can't lay the motor flat with the screw points at top and bottom orientation.


the piece serves as a 90 degree adapter, not a pass thru.

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Old 2013.12.16, 09:19 AM   #4
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From what I can see, you can screw one screw into the motor (with taper headed screw), which will retain it to the adapter, much like the Reflex mount, and then use the two screws to mount the adapter to the motormount. It is not a pass through, but more of a 90 degree adapter. I don't know whether this is viable, but just what I see when looking at the picture. Let me know if this works.
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Old 2013.12.16, 09:32 AM   #5
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this is why i love the site offers up a slice of humble pie every once in awhile
you are correct, i was looking at it as a pass thru adapter, not a 90 degree adapter and it indeed works this way. i'm going to reverse the bracket in a minute.

i'd advise using loctite as 4mm screw is a bit short and 6mm is too long without shims.
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Old 2013.12.16, 09:42 AM   #6
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next issue... the damper support arm hits the motor can limiting the adjustability of the top slide by half the distance available. i hope there is enough play that this doesn't cause an issue with setting gear mesh. lets just say you have VERY limited amount of play in motor positioning.
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Old 2013.12.16, 10:25 AM   #7
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how about turn the adapter in 180? so you can move the motor horizontal.
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Old 2013.12.16, 10:44 AM   #8
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already done and this is where measured adjustability is limited. i put in a spare ball diff just to check and there is just enough room to get one in without being overly tight but i fear there is limited room that might eliminate the usage of certain spur/pinion combinations. right now it has a 12t/53 64p and works.
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Old 2013.12.16, 11:18 AM   #9
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Quote:
Originally Posted by arch2b View Post
already done and this is where measured adjustability is limited. i put in a spare ball diff just to check and there is just enough room to get one in without being overly tight but i fear there is limited room that might eliminate the usage of certain spur/pinion combinations. right now it has a 12t/53 64p and works.
I have found that to be the case on many of motormounts. This typically isn't too much of a problem, unless trying to gear the motor to the moon. I typically prefer smaller spurs when I know that I am going to gear it up.
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Old 2013.12.16, 07:06 PM   #10
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ok, got it all mocked up to test it out and noticed the alignment of the self centering damper is off with the damper shaft and post support. it's simply not perpendicular but off kilter.
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Old 2013.12.16, 07:53 PM   #11
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Is the DDS post centered in the chassis? Can you post a pic from the rear/top of the chassis?
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Old 2013.12.16, 08:03 PM   #12
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the damper support post offers no adjustability in centering the ball end. it screws down in one spot, no height or left right adjustment.

ditch the stock spacer as well. the shaft spring hangs on the top swivel plate with the stock spacer. just as i did with the PN motor mount, put it over a bearing to level it out enough for the spring to not catch the swivel plate. one of the odd bits of milling on the support arm, they only flattened out enough area for the stock spacer this means my ball end gets out of plumb if i tighten it down to hard. you can see this in the picture. i need to shim it ever so lightly.
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Old 2013.12.16, 08:55 PM   #13
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What is the problem with the stock spacer? Is it too short? The bearing is whats causing the off centering. Maybe use some mr03 knigpin shims under the bearing (if you still want to use the bearing). they should be small enough outside diameter to not angle the post... in general, i would use a few thinner shims instead of the bearing. that gives you an easier time fine tuning the height.

You could just use the stock shim under the bearing...
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Old 2013.12.16, 09:12 PM   #14
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the stock spacer is too short.

the bearing isn't the issue. the overhead picture was with the stock spacer only. if you look closely at the rear picture, the ball post is still plumb despite the bearing not sitting flat. it's only turned down hand tight, not cranked down. i do need to find a couple really thin shims that are smaller diameter to flatten that out though. I'm still mocking it all up at this point, nothing is final.

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Old 2013.12.17, 11:29 AM   #15
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i dug through my shims and found the perfect match for the recess on the support arm to level the bearing spacer.
you can see the damper is still not aligning perpendicular to the rear end. i'd love for someone to tell me it is designed this way.
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