Rear Disc Adapter

[Neffro]

I don't know if this has been posted before, but I just found it tonight.


http://www.torontocycles.com/images/Rear_Disc_Conversion_Kit2.jpg

Lots of anodized joy in a wide array of colors too. Reports from members of Retrobike are very good on the prices, products and shipping times.

I may look into this brake adapter for my 856 update/rebuild.  Anyone else use one?

[jimbob]

That's the kind that fits to the brake post to secure it as well sin't it?  I'm not sure if that would fit on my 857 swingarm tbh.
Plenty of people on here have disc adapters for the rear, some are home-made fabrications, but there was an ebay seller who had sepcific ones for the 85x/95x swingarms (forget the sellers name now but there's a thread on here all about them), which basically used the existing holes in the dropout to secure the adapter, along with the wheel QR.

[Spokes]

Unfortunately that type of adapter wont fit your 856/857 or any other proflex with a strut. The rose jointed torque arm that stops the bracket from spinning bolts in place of the original V brake post but is in direct line of the strut. This type of adapter will only fit the later strutless models such as 4000/5000/all carbon 4500 type and evo.

I have two HOPE versions of this adapter. One adapter only was on my OZx when I bought it and the other complete on my 957 I bought that.
Only problem was, due to the strut on the 957, the clueless monkey who fitted it rode the bike with no brake torque arm fitted at all. The adapter would spin around the back wheel every time you braked and wedge its self againt the swing arm. It was plane dangerous! When I questioned him on it after receiving the bike he played dumb and denied all knowledge of it.  He said "It's seemed to work fine to me"  !!

Your best bet is to buy a Hammer head adapter from Mike on ebay. They're tried and tested, and work perfectly. They look cool aswell!

Chris

[fyrstormer]

The Hammerhead is a good option  for swingarms that have two screw-holes near the rear dropout. For older bikes that don't have two screw-holes near the rear dropout, like my 756, the best option is to ask Shovelon if he'll weld disc tabs onto the swingarm. That's what I did, and it works perfectly.

[Spokes]

Shovelon welding on an adapter is great if you live in his half of America, but if you dont you can fit a Hammerhead to swing arm without two holes aswell, you just drill and tap the holes yourself. The adapter is supplied with the correct drill bit and tap. Very simple and works just fine.

Chris

[Neffro]

Since I am on the East Coast I guess I'll try to track down a bolt on adapter. More of a long term goal anyway, since I am just starting my rebuild today.

[Spokes]

Here you go.
http://www.ebay.co.uk/itm/HammerHead-Rear-Disk-Brake-Mount-for-Pro-Flex-and-K2-/130803059957?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item1e74784cf5

Mike is/was a member on this forum and still owns two proflex's at last count. One of these would save you a lot of bother.

Chris

[fyrstormer]

Shovelon welding on an adapter is great if you live in his half of America, but if you dont you can fit a Hammerhead to swing arm without two holes aswell, you just drill and tap the holes yourself. The adapter is supplied with the correct drill bit and tap. Very simple and works just fine.

Chris

Um, I removed my swingarm and mailed it to him from Virginia to Los Angeles and back. Everything went just fine. As a bonus, he was finally able to apply enough heat to the V-brake bosses to break them loose and remove them, which I was never able to do myself. I filled the holes with a Hope disc-brake-cable guide on one side, and a blanking bolt on the other.

The bolt-on adaptors are great if you don't have to risk damaging the bike to install them, but since the swingarms are irreplaceable, I'd rather have any modification be done by someone who's an expert at metalworking. Not to mention, I'll never have to worry about my welded-on mounting tabs coming loose during a ride.

[Neffro]

fyrstormer,

That looks factory it's such quality work.  Whats the going rate for that (shipping too)?

Got more pix of your bike?

[fyrstormer]

Looking through my old emails, Shovelon charged me $100 in 2010, but obviously I'm in no position to guarantee that price today. Inflation is a pain in the butt.

Bike pictures: http://s5.beta.photobucket.com/user/deusexaethera/library/bikes

[Neffro]

Thanks. Bike looks great. You'd never know it's a '96.

[fyrstormer]

That's just the way I like it. Though there *is* one thing that tips it off: the tubes are slightly narrower than on most newer mountain bikes, and there isn't any fancy diameter-changing going on. Just straight tubes. Not that I'm complaining.