Danbianchi881

This was a great start of the week for me and today I finally close another deal acquiring another grail bike for my collection. Unfortunately the suntour superbe group set was replaced with full shimano 105.
I was wondering if I should swap the group set from my Schwinn premis with Suntour cyclone white color.
What are the forum thoughts about swapping the drivetrain or just keep the leave it the way it is?

jamesdak 

Maybe ride it for a week or so and then decide if you're not happy with it like it is?

Sweet find, by the way!

noglider 

Leave it as it is. It's well equipped now.

thinktubes 

bikemig 

You can never have too many nice bikes and this is a great find.

artclone

Great, great bike! I have a Peloton with Superbe Pro and as much as I love the group, it doesn't out perform your 105. So I can't say the Cyclone will be a performance upgrade either. But I also love the looks of the fairly rare white Cyclone . . . So much that I was looking at buying a Premis just for the group to use on another project.

Good news is you can try it and switch back whenever you want!

bwilli88 

Yep, I would do the swap, that red and white would be great contrast. Is the Premis something special or is the peloton nicer?

Clang

Leave it as is- you'll like the 105.

rccardr 

^^ Yep, 1050 series 105 is as good as six speed indexed gets.


But that frame rides very, very well and is well worth an upgrade to Dura Ace if you can afford it. Built one several years ago with 9 speed 7700 and down tube shifters and it was just wonderful.

ollo_ollo

Owners choice, but I like the Premis better as is. Don

RaleighSport

I say go for it! But then again I'm about to swap builds on my own premis and peloton.. so I may be a bit biased.

wrk101

I'd leave the Premis alone.

I'd dump the stem on the Peloton, major ugh there.

Then I would pick up a donor bike. If you want index, my preferred group is tricolor 600. For STI, I either use the STI version of tricolor or Dura Ace 7400. The 7400 is harder to find, and tends to cost more, often at least twice as much (if not even more).

I personally do not care for that 105 group. I have no doubts it will work fine, but a Peloton deserves better. If I had that bike, that group would end up on the donor bike I find to get the 6400 group. Resell the donor bike complete to recoup the expense, and out of pocket you should be very close to breakeven. I picked up a Cannondale donor last year, complete 6400 STI, for $125.... No brainer...

I recently got lucky and found a nice 7400 donor bike. Those are few and far between around here. That group will go on the 1984 Trek 770 frame I picked up on ebay, if it ever shows up......

6400 STI is so much easier to find, aesthetically, it looks almost as good as the 7400 series, and functionally, I don't see a difference. Plus 7400 stuff does not play well with non-7400 stuff, while 6400 works with a lot of different parts. So on a purely practical move, 6400 is a better choice.

Now if it was the white Peloton, I might make that swap. I seem to remember a white Peloton going to CA a couple of years ago.....

Danbianchi881

Thanks for the advice, I’ll be on the look out for both 6400 tri color and 7400 Dura ace group set.
For the time being, I’m just going to roll with the shimano 105. Done a lot today like clean and change the bar stem.

RiddleOfSteel

Hooray, another Peloton, and another 1985 model at that!! Don't you just love the red paint? When the sun shines on it, it is fire! The 105 will do very well for you, as much as I do like the nice Suntour parts. It looks comfortable on that bike, which is a bonus. I've had that era of 105 on my '85, and then about half a dozen other (Dura-Ace of some variety) setups. The frames ride well and are tuned for speed and sharp steering. If you ever get antsy, remember that you can dump a lot of speed parts onto this. Oh yeah.

degan

I think the red and white will really 'pop' if they were together. If that is a high priority, go for it. Personally, I'd put the group you like more on the bike you ride more, then if its really six of one half dozen of the other I'd use color combo as the tie breaker.

dddd

I sure wouldn't worry about the 105 component group, that's one sleek-looking gruppo and really durable and high-performing. The hubs are smooth as silk and least like forever as well.
With white parts, your Peloton might at first be mistaken for a Circuit minus it's chrome. The contrast would be sharp!

Schwinn seemed to have the geometry of their performance models well-sorted by this time, you'll be the judge of that and how it jibes with the fit of either of these bikes.
Like jamesdak says, you really should ride both of these bikes for a good while first, before deciding on changes.

I bought a 100% Japanese '87 Bianchi Sport SX last week (pictured below) that is far more modest than either of your bikes, and with geometry a little slower as well, but still not having any significant impact on even my most sporting of rides with local "fast riders" who are training for events almost year-round. I paid $100 plus tax so the bike as shown already has all of 12 hours of mechanical and cosmetic work put into it since it had spent a long time stored outdoors.
Same color too, which is why I thought of it, and with only entry-level Exage componentry though with nice 105 hubs. Only complaint might be the tight caliper clearance atop the tire, but a 25mm would fit safely. Either of your bikes is likely a pound or three lighter than this one's 23.6lbs (with lightweight pedals and tires).




By 1989, even the quite-modest Schwinn Traveler model finally adopted the same(!) geometry and 700c rim BSD as the Paramount, Circuit, Peloton and Tempo models, and the example below was another bike that was left outside for years and resuscitated by yours truly. A little heavier yet, and again with entry-level Exage SIS componentry, but honestly nice-enough performing even for longer rides, where it's wide, heavy rims at least have purpose in supporting a 25mm pair of Gatorskin tires.




It kind of amazes me how much better that the paint on these old Schwinns holds up than the saddle and bar tape when these bikes are left outside for years!

TiHabanero

The trouble with that vintage 105 is that it is superbly ugly. Put the Suntour on it to accent the nice ride.

tyler_fred

Do you know if the rear cogs are freewheel or cassette? I would keep the 105, replace the cogs with HG ones and add an SRAM 8 speed chain. Shifting would be smooth as butter and very reliable.

Danbianchi881

Here my Bianchi with Shimano 600. 6400 tricolor and it really close to your sport LX


[QUOTE=dddd;20158556]I sure wouldn't worry about the 105 component group, that's one sleek-looking gruppo and really durable and high-performing. The hubs are smooth as silk and least like forever as well.
With white parts, your Peloton might at first be mistaken for a Circuit minus it's chrome. The contrast would be sharp!

Schwinn seemed to have the geometry of their performance models well-sorted by this time, you'll be the judge of that and how it jibes with the fit of either of these bikes.
Like jamesdak says, you really should ride both of these bikes for a good while first, before deciding on changes.

I bought a 100% Japanese '87 Bianchi Sport SX last week (pictured below) that is far more modest than either of your bikes, and with geometry a little slower as well, but still not having any significant impact on even my most sporting of rides with local "fast riders" who are training for events almost year-round. I paid $100 plus tax so the bike as shown already has all of 12 hours of mechanical and cosmetic work put into it since it had spent a long time stored outdoors.
Same color too, which is why I thought of it, and with only entry-level Exage componentry though with nice 105 hubs. Only complaint might be the tight caliper clearance atop the tire, but a 25mm would fit safely. Either of your bikes is likely a pound or three lighter than this one's 23.6lbs (with lightweight pedals and tires).




By 1989, even the quite-modest Schwinn Traveler model finally adopted the same(!) geometry and 700c rim BSD as the Paramount, Circuit, Peloton and Tempo models, and the example below was another bike that was left outside for years and resuscitated by yours truly. A little heavier yet, and again with entry-level Exage SIS componentry, but honestly nice-enough performing even for longer rides, where it's wide, heavy rims at least have purpose in supporting a 25mm pair of Gatorskin tires.




It kind of amazes me how much better that the paint on these old Schwinns holds up than the saddle and bar tape when these bikes are left outside for years!

[/QUOTE]

Danbianchi881

Not sure if it is freewheel or cassette, I’ll check this out next time went I’m free

robertorolfo

I might be in the minority, but I actually kinda like Bio-Pace.

That said, you NEED to re-align the finishing tape on your bar wrap. That kind of stuff drives the OCD crowd crazy, even online.

Dean51 

OK if you like Bio-Pace, but I'd think twice or thrice about admitting it. Just saying'.

Dean

robertorolfo

Ha, I'm not ashamed to fly the flag.

Sometimes, if I'm commuting on my Bio-Pace equipped bike and I happen to pass someone during a climb, I will think to myself, 'Well, it's really not fair for that guy. I have Bio-Pace and he doesn't.'

RiddleOfSteel

BioPace ain't that bad. It's worked well for me in the past. I have a lovely set for a 130/74 BCD triple, but my attraction to aesthetically-pleasing round 'rings has the BioPace 'rings tucked away for future use. Fly the flag, @robertorolfo !

1050-era Shimano 105 (the polished aluminum with black painted sections) is a great looking groupset. Works great as well. Truly a baby 7400 Dura-Ace. RX100 a few years later is also surprisingly nice looking--very high polish!

noglider 

I've been meaning to try Biopace for a long time. I have some here that kind people sent to me.