patnoe

Please elaborate (not the comment on Di2 and disk brakes). If lighter frames and lighter components do not lead to easier riding, then why do people pay big bucks for them? Prestige only?

noodle soup

Is google broken today?

Do a little research on the topic. It's been discussed here many many times

patnoe

You are correct. Sorry. Found this with just a little research: "But even if small reductions can’t be felt, the fact is that a lighter bike requires objectively less power to move. Especially on climbs, the power-to-weight ratio of bike and rider plays a huge part in overall performance."

noodle soup

Correct.

On climbs, bike weight makes a difference, but it's a very small difference. I weigh 183lbs, and my bike weighs 17lbs(just an example), or 200lbs total. If I drop 2 lbs off the bike, that is a 1% weight reduction.

How much of a difference do you think that will make in speed?

patnoe

You make a good point. Sounds like unless you are racing, where every little advantage matters, then you are better off investing in wheels. Interesting though that you do have a light bike.

noodle soup

A light bicycle handles better, accelerates slightly quicker, and brakes slightly faster. Lightweight bikes are more enjoyable to ride(JMO) but average speed changes very little(except on steeper climbs)

FTR, my bike is slightly under 17lbs with 9000 series Di2 and hydraulic discs.

patnoe

Thanks. This has been very informative. What do you ride, if you don't mind sharing?

noodle soup

lifanus

My 2009 Roubaix Comp is with 105 groupsets and I put on an Ultegra Wheelset and ran tubeless tires on it, and it actually made quite a big improvement on the rolling resistance compared to the stock Specialized/Mavic CXP wheelset and cheap tires, which was quite heavy and felt slow at times. With new wheelset, the weight of the bike actually also dropped to sub 21lb, compared to stock wheelset/tires and tubes at sub 24lb.

I don't think I'll go disc anytime soon since I really don't race in the rain, but do fancy the new etap wireless shifting stuff, so maybe someday I'll buy the etap groupset and upgrade my 10 s-works, since it's not compatible with di2 which needed internal cabling to run...

On the lighter bike is faster thing, I agree with Noodle Soup... My sub 17lb bike is not any faster than my sub 21lb bike. Only very slightly faster when climbing hills, since I live on hills... The amount of effort felt the same when climbing, but again I'm not a racer just love to ride for fun. If you have the money to spend on a $10k bike, sure why not, buy it, show it off in group rides or win races, which ever make you feel better

patnoe

This thread had been terrific. I have changed my thinking on upgrading. I now think that since I really want Di2 shifting, I may look for an upper end used 2016 or later Roubaix with Ultegra Di2. 2016 or later Ultegra would be a huge upgrade from 2009 105 groupset since it is at least cycle later, so I would still get that small benefit on hills. My guess is that Roubaix with Ultegra probably only shows up on a frame lighter than my 2009 Roubaix Comp 9r frame.

Having said all that, I recently found a new 2019 S-works Roubaix on sale for $6799 which is a bit tempting.

Iride01 

In the 2020 spring sale Specialized was offering the new old stock 2019 S-Works Roubaix for slightly less than that. So maybe not so good deal for purchaser but good deal for seller.

However if this is Specialized current offer for their NOS, then I guess that is what it is.

noodle soup

I saw a 2019 being sold by Mike’s Bikes for $6799, so I’ll speculate that Specialized set the price.

shelbyfv

OP has apparently moved on to a different bike. https://www.bikeforums.net/road-cycl...idea-good.html

nycphotography

As to price, $2500 seems reasonable for a Di2 11sp bike in pristine condition, considering the 303 wheels which are ballpark 850 on ebay.

If it's built 11 speed, and is in less than pristine condition, I would be closer to $2000.

HOWEVER, Dunno if it's been mentioned, but the SL3 frameset was the Tom Boonen era, and pretty much everyone agrees it was far too stiff for normal cyclists (read: non compliant for non gorillas). Specialized learned their lesson and the SL4 was much better.

I have an SL2, and had an SL4 and both were much better riding (the SL4 was better/more compliant than the SL2). But I am relating what everyone (dealers and riders) was talking about wrt the SL3 at the time.

I personally would hold our for finding an SL4 at minimum. (All of the above is SWorks only).

Doge

Old Di2 - you don't want that. Mine is in a box. Go NEW Di2 and pay, or cables. Target $1,500 and don't spend over $2K for a great used bike.

BTW - that looks 10speed, not 11 speed. Edit - other posted that - sorry for repeating.