Shimano 5700 vs 7800

What bike and bike bits should you buy?
colm_gti
Posts: 145
Joined: Tue Jul 31, 2012 13:02 pm

Shimano 5700 vs 7800

Postby colm_gti » Fri Nov 23, 2012 00:25 am

Hi all, quick question...

Looking into giving the bike an overhaul over winter before racing starts up again (new cables, inner and outer, new BB cups, maybe new headset, new bartape etc etc) and have been offered a full 7800 groupset, which I believe is in good condition. The bike currently has full 105, with a compact chainset I had planned to upgrade to a double, and the DA groupset has a full double, ideal....

But how does the older DA compare to newer 105? I'm slightly put off by the exposed shifter cables, but could be convinced if the shifting is noticeably improved? Is it lighter than a 105 groupset?

C

nochekmate
Posts: 3308
Joined: Wed May 13, 2009 05:38 am

Re: Shimano 5700 vs 7800

Postby nochekmate » Fri Nov 23, 2012 07:09 am

Believe it would be lighter than 5700 - google the details. If you can live with the cables then the DA7800 is still a terrific groupset - shifting is super smooth and the chainset is a work of art. There are many who believe that DA7900 was not a leap forwards.

tonye_n
Posts: 791
Joined: Fri Sep 19, 2008 18:47 pm

Re: Shimano 5700 vs 7800

Postby tonye_n » Fri Nov 23, 2012 07:16 am

7800 much lighter than 5700.
Far better more reliable shifting up front, as the front-mech cage is stiffer and the crankset is stiffer.
The internals of the 7800 shifters and rear mech in particular comprise of better quality stronger components, and will keep top performance for much longer.
IMO the shifting up the rear cogs is also much better, quicker and more resposive, and the right hand shifter does give a nice positive 'click' when you change gears.

The anodising on the 7800 parts will also hold their luster for much longer. So it will look good for longer I think.
The 7800 crankset is just lurvely, and I only moved to ultegra 6700 because I can no longer cope with a standard double on the hills of Bristol.
I still use 7800 shifters with a full 6700 groupset though, as I find the 7800 shifter action much better than 6700.

Having said that I have currently got 6700(with 7800 shifters and front mech) and full 5700 on both my bikes, and neither has missed a bit in the past year.
I set both up correctly, and I have not even had to adjust anything on the drive train for the past year.
At this rate I anticipate that I will only need to change the chain and cables, and that the only fettling to be done in the next year (perhaps the cassettes at some point as well).
Shimano is very reliable from 105 series upwards.

Bozman
Posts: 2529
Joined: Wed Sep 08, 2010 19:05 pm

Re: Shimano 5700 vs 7800

Postby Bozman » Fri Nov 23, 2012 08:08 am

I won't take the jump to 7900 because the 7800 is that good, smooth isn't the word, apparently it's the Carlsberg of groupsets.
I've got 6700 on one bike and the shift is dreadful in comparison to 7800, in fact i'd say that my old 6600 was better than the 6700.

foggymike
Posts: 749
Joined: Tue Apr 29, 2008 11:37 am

Re: Shimano 5700 vs 7800

Postby foggymike » Fri Nov 23, 2012 23:18 pm

7800 D-A is, in my opinion, the best groupset Shimano have made to date. It's streets ahead of 5700, 6700 or 7900 for that matter. Whether D-A 9000 has finally topped it seems to be up for debate looking at the reviews. Really, you're asking if a 5 year old Ferrari that has been well looked after is better than a new Kia.

User avatar
unixnerd
Posts: 2793
Joined: Tue Oct 13, 2009 20:13 pm
Contact:

Re: Shimano 5700 vs 7800

Postby unixnerd » Sat Nov 24, 2012 13:51 pm

7800 is superb, the crankset is a work of art. It shifts and looks better than the new Ultegra on my "best" bike too.
http://www.strathspey.co.uk - Quality Binoculars at a Sensible Price.
Specialized Roubaix SL3 Expert 2012, Cannondale CAAD5,
Marin Mount Vision (1997), Edinburgh Country tourer, 3 cats!

Cycloslalomeur
Posts: 333
Joined: Mon Mar 01, 2010 13:08 pm

Re: Shimano 5700 vs 7800

Postby Cycloslalomeur » Sun Nov 25, 2012 12:57 pm

Another 7800 fanboy here. My only complaint is the shape of the hoods. I recently fitted Chorus 11 brifters and kept the rest of the 7800 groupset and while the Campagnolo shape is superior over that of 7800 the mechanics are rubbish and very noisy to boot. The Ergopowers are probably going to the daily hack, which also has some 7800 bits bought second-hand off Ebay. I believe 7800 bits are just buffed, not anodised, which of course is an invention of Satan.

User avatar
Max888
Posts: 196
Joined: Thu Nov 26, 2009 21:46 pm

Re: Shimano 5700 vs 7800

Postby Max888 » Sun Nov 25, 2012 21:57 pm

Cycloslalomeur wrote:Another 7800 fanboy here. My only complaint is the shape of the hoods. I recently fitted Chorus 11 brifters and kept the rest of the 7800 groupset and while the Campagnolo shape is superior over that of 7800 the mechanics are rubbish and very noisy to boot. The Ergopowers are probably going to the daily hack, which also has some 7800 bits bought second-hand off Ebay. I believe 7800 bits are just buffed, not anodised, which of course is an invention of Satan.


The reason the Chorus shifters are noisy is that they are designed for 11 speed campagnolo, not 10 speed shimano...
I have a full Chorus groupset; positive feeling, silent.

chanjy
Posts: 194
Joined: Tue Jan 18, 2011 12:33 pm

Re: Shimano 5700 vs 7800

Postby chanjy » Mon Nov 26, 2012 10:12 am

Yeah wtf.. Chrosus shifters on 7800?? :shock:

Surprised it works at all

Cycloslalomeur
Posts: 333
Joined: Mon Mar 01, 2010 13:08 pm

Re: Shimano 5700 vs 7800

Postby Cycloslalomeur » Mon Nov 26, 2012 14:05 pm

The mechanism of the Campagnolo shifters is noisy and feels rustic. Perhaps it is better higher up the Campagnolo range.

The shifting is fine thanks to the Shimergo hack, there's just one superfluous click at one end. To mate 11-speed Campagnolo to 10-speed Shimano all you have to do is rotate the hooked washer in the rear mech clamp 90 degrees and route the cable around the hook in order to raise cable travel or buy a Shiftmate pulley, which does the same job.

Graham G
Posts: 1709
Joined: Wed Apr 19, 2006 10:46 am

Re: Shimano 5700 vs 7800

Postby Graham G » Tue Nov 27, 2012 15:24 pm

Max888 wrote:
Cycloslalomeur wrote:Another 7800 fanboy here. My only complaint is the shape of the hoods. I recently fitted Chorus 11 brifters and kept the rest of the 7800 groupset and while the Campagnolo shape is superior over that of 7800 the mechanics are rubbish and very noisy to boot. The Ergopowers are probably going to the daily hack, which also has some 7800 bits bought second-hand off Ebay. I believe 7800 bits are just buffed, not anodised, which of course is an invention of Satan.


The reason the Chorus shifters are noisy is that they are designed for 11 speed campagnolo, not 10 speed shimano...
I have a full Chorus groupset; positive feeling, silent.



Nah, it's just how Campag make them - many of us prefer the 'clunk/click' definitive shift rather than the stealthy 'did I change gear?!' of Shimano. Your "positive feeling, silent" is his "rubbish and noisy".

I love my shimergo mix - wouldn't buy anything campag from 2007 onwards as the whole compatibility with different front mechs and range of different lever operations for the front shift rendered the range a complete mess. Change for change sake.

User avatar
thegreatdivide
Posts: 4246
Joined: Wed Oct 20, 2010 11:12 am

Re: Shimano 5700 vs 7800

Postby thegreatdivide » Tue Nov 27, 2012 15:32 pm

Thread hijack 'n' spam...I've got a shiny shiny full 7800 groupset for sale if anyone's interested. All the bits apart from cables are there - 7810 pedals too! Hardly a mark on it. PM me for pics ;-)

As you were... :oops:
"Crevaison sur les paves..."

pkripper
Posts: 636
Joined: Tue Aug 07, 2012 19:27 pm

Re: Shimano 5700 vs 7800

Postby pkripper » Tue Nov 27, 2012 17:29 pm

I've both groupsets on different bikes and the 7800 is lovely, shifting is crisp and light comparatively, the chainset is jewel like, and all in all it functions faultlessly, and I expect it to continue to do so for some time.

By comparison, the 6700 and 5700 I have feel functional, but industrial. There's a fair bit more resistance at the shifters, and the hood shape isn't as good either. And it doesn't shine as much.

mjbennett
Posts: 504
Joined: Sat Sep 25, 2010 19:28 pm

Re: Shimano 5700 vs 7800

Postby mjbennett » Wed Nov 28, 2012 19:00 pm

The only downside of 7800 is that cables are not routed along the bars (under the bar tape).

foggymike
Posts: 749
Joined: Tue Apr 29, 2008 11:37 am

Re: Shimano 5700 vs 7800

Postby foggymike » Wed Nov 28, 2012 20:04 pm

Why is that a downside? Personally I prefer the cable that way as functionally it gives a smoother change and I use the cables when holding a TT-style aero position and it gives more variations on the hoods.

mjbennett
Posts: 504
Joined: Sat Sep 25, 2010 19:28 pm

Re: Shimano 5700 vs 7800

Postby mjbennett » Wed Nov 28, 2012 21:13 pm

Personal taste, i know, but it looks a lot neater. Modern shimano, sram and campag designers agree too.

User avatar
southdownswolf
Posts: 1504
Joined: Tue Nov 08, 2011 23:06 pm
Contact:

Re: Shimano 5700 vs 7800

Postby southdownswolf » Wed Nov 28, 2012 21:39 pm

Bozman wrote:I won't take the jump to 7900 because the 7800 is that good, smooth isn't the word, apparently it's the Carlsberg of groupsets.


I won't be buying 7800 any time soon then :lol:
http://www.stuartmole.co.uk/

mjbennett
Posts: 504
Joined: Sat Sep 25, 2010 19:28 pm

Re: Shimano 5700 vs 7800

Postby mjbennett » Wed Nov 28, 2012 21:42 pm

Could be worse- the Budweiser of groupsets! :lol:

foggymike
Posts: 749
Joined: Tue Apr 29, 2008 11:37 am

Re: Shimano 5700 vs 7800

Postby foggymike » Thu Nov 29, 2012 08:04 am

I'd agree it's neater/tidier which marketeers like because it's new and helps to sell bikes on the showroom floor, but in all ways that matter when you get the thing home it's worse. They stuck to their guns on the aluminium crankset against the fashion for carbon but I'm sure that's coming too for the same reason. I'll have to change sometime in the next few years so I hope it's all sorted out by the time I need to press the button.


Return to “Road Buying Advice”

Who is online

Users browsing this forum: bsharp77, ChewyWahid, diamonddog, Gavinus, MrB123 and 13 guests