Metal Firewall Motor Mount (Offset) Small - 48mm Deep

 bdgotalotta 18 points

I would tend to doubt it, I'll tell ya what I'm thinking, and then you'll just kinda have to go with your gut feeling unless: 1) My theory makes sense to you*-) or 2) Someone who has received theirs gets on here and gives us a definitive answer. (I've sent a bit of time looking into these, and I have ordered several diff sizes based on what I THINK I've got figured out, if that lends any credibility to my opinions on the matter:-) They refer to this as "Firewall mount offset...(Small)-48mm deep." If you then refer to the dimensions given* 43x30x48 for the mount, and 46mm x 20mm for the MOUNT holes ( not the motor mounting holes IN the mount, which are 16mm and 19mm) then look at the picture of the mount, you can see that...1) the 48mm is depth from front to rear(able to accept a motor that is 48mm or less regardless of shaft length, because it will go through the hole I'm the front.) 2) 43mm has to be the measurement from outside to outside of the aft mounting flanges and 30mm the hight of the front of the mount due to the mounting hole measurements given of 36mm&20mm. So, if we look at the pic, AND we know that 48mm is the depth front to back, than it only makes sense that the rear flanges are AT LEAST 43mm( due to 43x20mm given). This means the mounting face MUST be 30mm high, but, sadly, with the dimensions given, all I can say for sure is the face is LESS than 43mm( prob. by a good bit), making it, by my reasoning, an impossibility for your 46mm outrunner to fit due to it being to WIDE to go inside, between the mount's <48mmwalls, although I guess if you had mounting holes on the back of your 46mm that were 16mm or 19- it could be mounted on THE FRONT SIDE! That seems awful odd, assuming your 46mm is 40 mm long- you'd end up with a motor that was AT LEAST 88mm in front of your firewall. That'll make for one big honkin' snoot of a cowling and I'm guessing a fair amount of weight in the tail to offset the CG issues that would create!=) I hope my ramblings helped you or anyone else who stumbled along here, as the same reasoning will serve you well on the rest of these same types of motor mounts. Low& Slow- Doug n Texas

 bdgotalotta 18 points

Yikes, sorry- after I posted that and read it full size, I saw a GLARING error, and I apologize. However, it changes nothing as far as if it'll take your 46 outrunner. I'm typing this on my iPhone, so I have to constantly scroll up,down, back n forth just to see an entire page, and because of this, I got the mount hole measurements mixed up at first. Where I stated that the mounting holes in the flanges were 46mm x 20mm, I was clearly in error from looking at the 46 above it, referring, of course, to the WEIGHT (43g),and then I got the whole " flanges must be the 46mm in the 43mmx30mmx48mm" in my head, and *PRESTO*, I end up looking like a dummy! ( Sometimes looks aren't too far off, either!*-) ANYWAYS, I do apologize to you and anyone else who may have ended up more confused than before they read my little treatise, but like I said* the fundamental question/answer remain the same. A 46mm will NOT fit INSIDE this mount. The aft measurements for the mounting holes in the flanges are...wait for it...36(Thirty Six) millimeters by 20mm, so the inside measurement actually turns out to be a lot smaller than we even thought before my blunder. So, do be quick, concise AND correct, here is a quick recap: The 48mm is depth from front if mounting face to rear of the mount on a datum that would be flush w/the flanges. 43mm is the widest measurement of the mount, and this reference is taken from the outside edges of each flange. This leaves hight, as we now know depth(48mm) and width(43mm). I must then assume that 30mm is the hight of the mounting face. Judging from the picture, this seems to be a rational conclusion. What isn't known, and from these measurements CAN NOT be known with any degree of accuracy other than to say," yes it's big enough", or " no, there's not enough space" is the answer to the very question you asked( and use been trying to figure out myself*-)! What is the WIDTH BETWEEN the side walls on the interior of the mount?(Where the da*n motor goes, thus being one of the more important reference points there can be!!!!) Like I said, it can't be known to any exact number, HOWEVER, it is MUCH less than the 43mm that they list as width, because we know that to be the flanges. It is also less than 36mm, because we know those to be the measurements in the flanges, which themselves are on the outside of the inner mount wall. It's would be tough to guess an exact number, but now I know we can say with 99% confidence, that no motor with a diameter over 36mm will fit, and my guess(with the 7mm differential between flange width and the holes in the flanges: 43mm - 36mm = 7mm. Assuming those holes are in the center of the flanges, I would not buy this mount with the thought of putting in anything bigger than a 28-xx sized outrunner). So, Zahoor, my friend, I hope that helps you find another mount for your 46 outruner, and for anyone else who is looking at these, I hope this helps you to make a well informed decision so you don't end up w/ a mount that won't work for you, and not to mention being out of pocket on a little cash-o-la, now ya gotta wait till the RIGHT one gets shipped! Take care my friends! Low & Slow n Texas - Doug

 Old Man 205 points

not suitable but you could use it if you drill new mount holes for motor T mount diagonally like X and have the motor out front.