K2 / Proflex Riders Group

General => Tech Forum => Topic started by: paulb on January 22, 2005, 06:59:32 am

Title: disc brake mount for x56
Post by: paulb on January 22, 2005, 06:59:32 am



is it possable some one could do me a few close up pictures of a rear disc mount for the x 56 frame set up.

many thanks

paulb :)
Title: Re: disc brake mount for x56
Post by: jinder on January 22, 2005, 07:52:03 am
I know you looking for 96'...  but check out these threads for a 97' for ideas

http://idriders.com/cgi-bin/YaBB_K2/YaBB.pl?board=news;action=display;num=11053145430

http://idriders.com/cgi-bin/YaBB_K2/YaBB.pl?board=news;action=display;num=1105478494
Title: Re: disc brake mount for x56
Post by: paulb on January 22, 2005, 08:13:32 am


Thanks man for this the only problem is if this is welded to the swing arm does it then need to be heat treated after? and what is the best way to fit it to the frame? welding is not the problem but the heat treatment is.

what also is the max diameter disc to be fitted?
Title: Re: disc brake mount for x56
Post by: paulb on January 22, 2005, 08:19:41 am


I have just seen the link for the front forks would this mount to any carbom fibre fork. I have pace rc36 on my proflex

can you buy these or are they home made ?
Title: Re: disc brake mount for x56
Post by: Simon on January 22, 2005, 08:37:18 am
Quote


I have just seen the link for the front forks would this mount to any carbom fibre fork. I have pace rc36 on my proflex

can you buy these or are they home made ?


Pace make a wonderfull bolt on disc adaptor for there carbon leg forks,contact them I'm sure they'll sort you out.email pace@pace-racing.co.uk  hopefully they still make them.
Most rear disc adaptors are bolt on, however Hope do a weld on adapter that requires a little bit of filing etc and comes with a jig,cost around £10,fitted a couple for friends,after welding aluminium it does require heat treatment or left for aroung 4 weeks,contact shovelon for details on this he's an expert on aluminium welding.
Simon.
Title: Re: disc brake mount for x56
Post by: Sprucey on January 24, 2005, 04:23:44 am
callum at RDI does a hammerhead rear disc mount for the X56 series - may get one myself when I get the rear shock sorted out.

Sprucey
Title: Re: disc brake mount for x56
Post by: zulu on January 24, 2005, 05:01:38 am
There are alot of good pics & info in the tech section.
8)
Have fun & keep on riding. [smiley=beer.gif]
Title: Re: disc brake mount for x56
Post by: will on January 27, 2005, 01:11:18 pm
Paulb

I used 3/8" Al stock plate fastened to the rear triangle through the threaded hole above the dropout and a notch where the skewer held it at the dropout.

After several months like that I finished it up with some JB weld, polished, & painted it.

My first attempt was a blueprinted CNC bit I had made up. When my prints proved hopelessly skrewed up I tried the shade tree method. That took a little head scratching, 3-4 cardboard templates, and some guess & check machining.

Basically, this is a labor of love. Don't got the love, go buy a Trek Fuel 90... Some close ups are on my gallery.

Will
Title: Re: disc brake mount for x56
Post by: shovelon on January 27, 2005, 03:47:54 pm
Will,

You did really nice work there. I like how you used the drop out.

Terry
Title: Re: disc brake mount for x56
Post by: will on January 28, 2005, 04:18:36 am
Thanks.   :)

Actually, on the front end I cut the dropout flange off the disc brake plate. It interfered too much with front wheel removal and didn't add much strength. The concern was that stress carried throught the axle and the skewer would crack the epoxy mount somehow.

On the back end, the dropout has become a molded-in part of the whole. Works veddy nishe! One dude on a new Cannondale Switchblade asked me "When did Proflex put disk brake tabs on their frames." He had plenty of parking lot time since his $5,000 ride was leaking brake fluid and the front deraileur was out of adjustment. [smiley=turtle.gif] Sorry man, I came to ride! [smiley=evil.gif]

What a sweet ride... went riding 2 wx ago with an engineer who was on a GT i-drive. He thought the 856 with the crosslink looked beautifully simple and wickedly aggro.  I can live with that!

Grrrrr   [smiley=furious.gif]