K2 / Proflex Riders Group

General => Tech Forum => Topic started by: 02gf74 on August 21, 2011, 04:13:02 am

Title: another rear shock adapter - frame on ebay
Post by: 02gf74 on August 21, 2011, 04:13:02 am
just seen this on ebay; another frame with an adapter for a Fox shock.  may be of interest to someone.

http://www.ebay.co.uk/itm/proflex-856-frame-/270803747204?pt=UK_Bikes_GL&hash=item3f0d294184
(http://i.ebayimg.com/00/$(KGrHqUOKjkE4sidQvVBBOT-lRNiEw~~_12.JPG)
Title: Re: another rear shock adapter - frame on ebay
Post by: whisperdancer on August 21, 2011, 05:56:53 am
Honestly, it looks dangerous.
Hoch eyes are on the same axis, so the shock has the tendenct to rotate. That makes the adapter more prone to failure.
Title: Re: another rear shock adapter - frame on ebay
Post by: trajectory on August 21, 2011, 08:24:35 am
Whoa! Good catch, whisper.

The seat stay pivots (at the swingarm), and top & bottom shock pivots all hinge on parallel axes?

What will keep the suspension from folding like a lawnchair?  :o
Title: Re: another rear shock adapter - frame on ebay
Post by: whisperdancer on August 21, 2011, 02:41:45 pm
The adapter must be a tight fit for the shock (it can seat on the flat end of the shaft). Together it a high torque, it can work. I wouldn't trust it, though.
Title: Re: another rear shock adapter - frame on ebay
Post by: shovelon on August 22, 2011, 12:17:31 pm
Yeah, the guy should just rotate it 90 degrees.
Title: Re: another rear shock adapter - frame on ebay
Post by: timboiow on August 23, 2011, 12:30:28 am
It looks to my (very untrained) eyes that the adaptor isn't an open U type design but is solid across the top face whcih is what prevents it folding in half (ouch!), but i agree with Shovelons view "rotate it 90 Degrees" for safety. But still looks like it would be a good buy for someone to build into a decent bike.
Timbo  ;D
Title: Re: another rear shock adapter - frame on ebay
Post by: 02gf74 on September 09, 2011, 12:41:46 am
Quote from: shovelon on August 22, 2011, 12:17:31 pm
Yeah, the guy should just rotate it 90 degrees.

yes - that is what should be done - this model can do that; in fact there is shock adapter out there that is made from steel plate, U-shape so will allow side to side movement but is fitted so the lower bolt axis is 90 to the top (as per above suggestion).