Big oops........ Help.

[vvviivvv]

Hi guys, was finishing off my HPR build, dropped a clanger..

Overtightened a 3mm hex and rounded it, turns out its a micron too deep (despite me measuring everything up with correct size washers / bolts)

Anyway theres a point on the Lehner 'Hi-Amp' fan when I rotate the shaft it catches, Any suggestions on removing this? all I need to do is loosen it half a turn...

[StevenBryant]

Hi Liam

I am sent you a link to some high tensile SS bolts to use on PM.

To resolve you problem, use a Dremel to cut a slot and use a flat head screw drive to unscrew.


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[fweasel]

I agree, slot it with a dremel would be my first fix. Sometimes I've been able to get a bite using a larger standard sized allen or even a torx bit in a stripped cap screw.

[vvviivvv]

Dremel is my last resort, little bit scared of getting metal filings in the motor too..

I've epoxied a Allen key in the bolt and will try in the morning..

[Doby]

Epoxy might not be the best...try JB Weld if the epoxy fails.

[NativePaul]

Often you can hammer a Torx driver into the hex to get one out.

[vvviivvv]

It was super tight, no room to get anything at it... Anyway, got it out with a hammer and a punch, all it took was to release a tiny bit of tension and it came out.

Although I have now built it, went to setup my ESC and the speed controller decided to just smoke........

[properchopper]

Liam, (or anyone with a similar dilemma) -

Having "been there" many times over the years (building boats & motorcycles) I've used this solution - needle nose vice-grips snuck into place & squeezed waaay tight & after a few tries to get it lined up it works most of the time. Often helps to recite obscene proverbs while applying pressure.

wrench 20190429_122505 (1).jpg

I see you have that one solved as I was posting this. Enjoy your new ESC [Oh wait ]

[enzo thecat]

I just hate when this happens. Often times, i swap out as much bolt/screw/nut hardware with American made synonymous hardware. It has helped A LOT.