Thanks Eric,

     The interior of the seat tube is smooth, no problem there, but I could 
file away a bit on either side of the slot in the seat tube to accommodate 
the  brake hanger.

John

On Wednesday, February 19, 2020 at 11:46:25 AM UTC-8, Eric Norris wrote:
>
> John:
>
> Sorry for jumping into this a bit late, but I’ll just add that the 
> mechanics I have spoken to about slipping seatposts would *never* recommend 
> friction paste. If your post is slipping, there is something going on that 
> shouldn’t be “fixed” with friction paste. That’s like putting a band-aid on 
> a broken arm.
>
> When I had this problem on a bike recently (Soma Saga), the fix involved 
> removing a tiny amount of excess material on the inside of the seat cluster 
> that was preventing the seat post from being properly gripped. A few 
> minutes with a file fixed the problem.
>
> --Eric N
>
> On Feb 19, 2020, at 11:34 AM, John Phillips <w00ly...@gmail.com 
> <javascript:>> wrote:
>
> 
> Hi Everyone,
>    Thank you for all your suggestions.
>
>     My 27.2 Nitto S83 seatpost is snug enough in the seat tube to stay put 
> at a given height if there is only a very, very thin film of grease, so I 
> suppose the friction paste might work. How clean does the seat tube need to 
> be of grease for the friction paste to work? And how did you degrease the 
> interior of the seat tube?
>        
>    With the seatpost in the seat tube, and no binder bolt present, I have 
> a total of about 0.5mm of play between the hanger and the edges of the slot 
> in the seat tube. I'm kinda leary about grinding a bit too much off of the 
> brake hanger, because if I weaken it too much, I would worry about the 
> hanger snapping while braking downhill on a dirt road.
>
>     So far, switching to something like the Paul Funk Monkey brake hanger 
> seems like it might the the easiest route? Or am I missing something?
>
> Thank you everyone for your help and suggestions,
>
> John  
>     
>
>
>
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