Adding a front disc to a road bike !! And Now Hydro!

[Hotdog]

I'm looking at using a set of these rims to build a set around some Circus Monkey hubs that are on their way. The rear hub is their new CX one that is 130mm OLN.

If things work out right, they'll be as close as %^&* is to swearing at 1,400g.

The rims themselves are USD $384 shipped per pair. It's either those MTB rims or some 38mm deep carbon clinchers that come in at 60g per rim more.

Nice, very nice. Perhaps I should re-think my idea of cannibalising my current wheels after all. I'd have to check the numbers but I have a feeling that with disc-compatible wheels as light as that then I might be able to do the front disc brake conversion and actually end up with a lighter bike overall instead of a slightly heavier one! Not that I actually care about a few hundred grams either way but it's impressive that it may be possible, and for around $1k all up (fork, brake and wheels).

Sent from my GT-P6800 using Tapatalk 2

[MichaelB]

I've got the drawings for the CM hubs, and I'll post some pics when they arrive.

Note that the rear hub is 130mm OLN and is only available as 32 hole (red or black) at the moment. Comes in at 240g for the rear hub.

[baabaa]

Doppelmoppel anyone?
Looks good to me.
The long-awaited mechanical-hydraulic converter has arrived!
Trickstuff brings drop bars and hydraulic disc brakes together
At last it’s possible to combine drop handlebars and brake shift lever with high-performance, weather-proof and finely responsive disc brakes.
http://www.trickstuff.de/en/products/Doppelmoppel.php

[MichaelB]

Doppelmoppel anyone?
Looks good to me.
The long-awaited mechanical-hydraulic converter has arrived!
Trickstuff brings drop bars and hydraulic disc brakes together
At last it’s possible to combine drop handlebars and brake shift lever with high-performance, weather-proof and finely responsive disc brakes.
http://www.trickstuff.de/en/products/Doppelmoppel.php

Very similar in style & execution to the TRP Parabox setup. One thing I like is the cable entry design, but doesn't appaer to be able to cope with the typical Aussie brake configuration, whilst the TRP can be "massaged" to make work. Not a huge issue, but still.

Interesting though is the weight is almost the same as the TRP Parabox, but does so with a 140mm rear disc (vs the Parabox 160mm).

Pricewise, the Doppelmoppel master cylinder only is 310 Euro (incl tax) and the full setup (ala Parabox) is 690 Euro (incl 19% VAT). Bloody expensive !!

Interesting though to see them pushing ahead with this even in the face of the Di2 setups from TRP & Formula.

Thanks for the info baabaa

[Mulger bill]

Very similar in style & execution to the TRP Parabox setup. One thing I like is the cable entry design, but doesn't appaer to be able to cope with the typical Aussie brake configuration, whilst the TRP can be "massaged" to make work. Not a huge issue, but still.

Just wondering... Could you swap the hoses over on exit from the unit to give right hand front braking? Crappy work 'puter won't let me see the site

[baabaa]

Crappy work 'puter won't let me see the site
Try moving your mouse to the letters in blue starting with http://www. and then with your pointer finger, and this is the important bit, click the left button on your mouse.

[Mulger bill]

Wish it was that easy. Blocks frugalrouleur results too

[MichaelB]

Very similar in style & execution to the TRP Parabox setup. One thing I like is the cable entry design, but doesn't appaer to be able to cope with the typical Aussie brake configuration, whilst the TRP can be "massaged" to make work. Not a huge issue, but still.

Just wondering... Could you swap the hoses over on exit from the unit to give right hand front braking? ....

This could be a simple solution, but would require bleeding afterwards. Not that that is a major issue.

One thing I did like is that you have the option of using your calipers (as long as the cylinder sizing is right). Still expensive though.

[MichaelB]

ENVE have now added a road version of their disc fork to the range.

Weight is 438g with uncut steerer,had a A2C height of 367mm, and rake of 43mm, all for the paltry sum of US$487.

Bike Rumour article - http://www.bikerumor.com/2012/06/18/env ... rake-fork/

Some pretty pics comparing Road and CX versions

[jasonc]

ENVE have now added a road version of their disc fork to the range.

Weight is 438g with uncut steerer,had a A2C height of 367mm, and rake of 43mm, all for the paltry sum of US$487.

forgive my ignorance - so could you get a standard road bike frame and put the fork on in place of whatever is there?
and how would a standard frame go with a rear disc?

[Hotdog]

ENVE have now added a road version of their disc fork to the range.

Weight is 438g with uncut steerer,had a A2C height of 367mm, and rake of 43mm, all for the paltry sum of US$487.

Bike Rumour article - http://www.bikerumor.com/2012/06/18/env ... rake-fork/
]

It's a very nice looking fork, shame it'll only be available with a tapered steerer though. I'd need something in 1 1/8" straight steerer.

[Hotdog]

forgive my ignorance - so could you get a standard road bike frame and put the fork on in place of whatever is there?

More or less. It is a little longer than the average road fork so depending on what the rake is it might change the steering trail a touch, but any change would be a fair bit less than you'd get from switching to a cyclocross disc fork instead. Obviously you'd also need the brake to go with it, and a new front wheel with a disc brake compatible hub.

and how would a standard frame go with a rear disc?

Adaptors have been made for fitting rear disc brakes to frames that weren't made with disc brake mounts but that's a bit of kludge and it's questionable whether it's worthwhile. After all it's the front brake that's most important. I think until road bike frames with rear disc brake mounts are readily available most road bike disc brake users will settle for a front disc brake and rear rim brake.

[jasonc]

forgive my ignorance - so could you get a standard road bike frame and put the fork on in place of whatever is there?

More or less. It is a little longer than the average road fork so depending on what the rake is it might change the steering trail a touch, but any change would be a fair bit less than you'd get from switching to a cyclocross disc fork instead. Obviously you'd also need the brake to go with it, and a new front wheel with a disc brake compatible hub.

and how would a standard frame go with a rear disc?

Adaptors have been made for fitting rear disc brakes to frames that weren't made with disc brake mounts but that's a bit of kludge and it's questionable whether it's worthwhile. After all it's the front brake that's most important. I think until road bike frames with rear disc brake mounts are readily available most road bike disc brake users will settle for a front disc brake and rear rim brake.

ta for the info. now to save my pennies. hopefully by the time it comes to buy i can afford a disc-braked road bike that weighs around 8kgs

[MichaelB]

ENVE have now added a road version of their disc fork to the range.

Weight is 438g with uncut steerer,had a A2C height of 367mm, and rake of 43mm, all for the paltry sum of US$487.

forgive my ignorance - so could you get a standard road bike frame and put the fork on in place of whatever is there?
and how would a standard frame go with a rear disc?

If you look at the start of the thread, that's exactly what was done to a carbon roadie. Front disc only, but it worked a treat and there are even more options available now than when I did it to start with.

Don't worry about the weight, decent braking in all weather is MUCH more important !!!!

[cooperplace]

ENVE have now added a road version of their disc fork to the range.

Weight is 438g with uncut steerer,had a A2C height of 367mm, and rake of 43mm, all for the paltry sum of US$487.

forgive my ignorance - so could you get a standard road bike frame and put the fork on in place of whatever is there?
and how would a standard frame go with a rear disc?

the rear is completely unimportant in braking: when you're at the limit of what the front can do, the rear wheel is barely touching the ground; re your second Q, yes, I swapped a disc fork into my frame, you can too.

Disc brakes will give you for the first time decent braking in the wet: this is vital

[Mulger bill]

Disc brakes will give you for the first time decent instant braking in the wet: this is vital

Edited for absolute truth

[twizzle]

Show me a car with cable operated mechanical brakes please... apart from drum activated hand brakes.

I never said cable, I said mechanical.

Linky.

Edit: I think they might be wrong in that description anyway, hydraulic brakes had been around for nine years at that point and everyone had switched as it got around the problem of uneven braking with rod/cable systems. But the point was that vacuum boosters are a mechanical system, they do not require hydraulics.

[Hangdog98]

One for the tinkerers. Sorry if this has been covered before gentlemen but a word of caution when building up your road bike with a rear disc and a 130mm OLD. Specifically having your frame builder weld on some disc tabs to your trusty Alu or Steel road frame. The current crop of ISO disc hubs at 130mm OLD will accept a common 160mm disc rotor but many will find that the edge of the rotor will touch the stays where they taper in. It might be best practice to present an MTB disc wheel to the dropouts to see what clearance you have before lighting the torch (yes, remove the cone locknuts to get it to fit in for this test). On my build I used a 145mm rotor which cleared the stays by 2/3 of a poofteenth. A 160mm rotor would NOT have fit. Now, when using a 145mm rotor, the disc tabs welded to the frame are in a different spot. Keep that in mind.

[Nobody]

For those who missed it, a Roubaix model is coming out with discs:
http://www.bikerumor.com/2012/07/10/201 ... baix-disc/

[MichaelB]

Looks nice (apart from the rear seat stays), but still reckon the Volagi is a better looking bike.

Will be interesting to compare them fro weight, spec and price side by side.

Apparently the new Volagi Liscio is 135mm rear spacing (as is the Spesh) and is hydraulic ready (what that actually means is not clear)

So who is going to be the next big manufacturer to bring out a disc roadie ....

Muppets still can’t spell Specialised though .....

[baabaa]

And in case this one has been missed....Review: Volagi Liscio disc-brake road bike

http://www.bicycletimesmag.com/content/ ... -road-bike

[Mulger bill]

...and is hydraulic ready (what that actually means is not clear)

At a guess the frame would have those saddle type braze ons that the hydro line clips to.

[MichaelB]

...and is hydraulic ready (what that actually means is not clear)

At a guess the frame would have those saddle type braze ons that the hydro line clips to.

That would make it similar to the Kona, but you cant see from the pic !!

[The 2nd Womble]

Record 11sp disc braked carbon roadie anyone???

http://www.bicycles.net.au/forums/viewt ... =9&t=54432

[MichaelB]

Record 11sp disc braked carbon roadie anyone???

http://www.bicycles.net.au/forums/viewt ... =9&t=54432

I'm somewhat torn between either getting a Volagi, getting one of them Chinese Carbon CX framesets or waiting a bit longer. I can't stand the Spesh (spelling and those rear stays - I know, fashion victim) or going for something like the Lynskey.

The SRAM Hydro groupset may have a big influence ....