Chainstay extension 100mm
- Thread starter defjack
- Start date
John Tolhurst
Zen MBB Master
Hi Jack,
just make sure the
Hi Jack,
just make sure the extension and chainstay are dead straight. Any curve in them and things can go wrong.
John
just make sure the
Hi Jack,
just make sure the extension and chainstay are dead straight. Any curve in them and things can go wrong.
John
defjack
Zen MBB Master
Got the Silvio with stem
Got the Silvio with stem extension set up. The bottom bracket was raised 5in and bars lowered 4in. so I ended up reversing the bars and spent lots of time playing around with the boom. Now I like it just fine seems to climb better also really feels like a different bike. Jack
Got the Silvio with stem extension set up. The bottom bracket was raised 5in and bars lowered 4in. so I ended up reversing the bars and spent lots of time playing around with the boom. Now I like it just fine seems to climb better also really feels like a different bike. Jack
WhiteSilvio
Well-Known Member
Hi Jack,
Just wondering what your X-seam is?
(I have an X-seam of about 104cm or about 41 inches in the old money.)
I am considering the 100mm extension and figured it would raise the BB by around 125 to 150 mm.
Interesting to hear your experience of the modification.
Regards,
John.
Just wondering what your X-seam is?
(I have an X-seam of about 104cm or about 41 inches in the old money.)
I am considering the 100mm extension and figured it would raise the BB by around 125 to 150 mm.
Interesting to hear your experience of the modification.
Regards,
John.
randyspann
Well-Known Member
RE: C.S. ext./ 100mm
-- In my experience, no bad effects in climbing/sprinting, only good. But the big difference is in back of the thigh clearance with the seat (with long x-seam). Also more aero, so better speed on the flats. Very comfortable!
-- In my experience, no bad effects in climbing/sprinting, only good. But the big difference is in back of the thigh clearance with the seat (with long x-seam). Also more aero, so better speed on the flats. Very comfortable!
WhiteSilvio
Well-Known Member
Another Chainstay Extension Fitted
Hi,
Just thought I'd post on another chainstay extension "conversion" for a 1.0 Silvio.
Finally got around to ordering the extension, and did this when I was ready to overhaul my drivetrain. I felt it was time to do something with the drivetrain, the front chainrings were the originals fitted and have covered well over 28000km, (however by way of comment I have to say that although I replaced them, comparing them with the new chainrings I wondered exactly how they were beyond servicable!) and the chain and cassette both had 13500km on them. The chain was a bit past it but was still shifting okay as was the cassette.
So anyway went ahead and had a big day pulling the front end apart and fitting all the new bits.
All went well and the results can be seen below.
Hi,
Just thought I'd post on another chainstay extension "conversion" for a 1.0 Silvio.
Finally got around to ordering the extension, and did this when I was ready to overhaul my drivetrain. I felt it was time to do something with the drivetrain, the front chainrings were the originals fitted and have covered well over 28000km, (however by way of comment I have to say that although I replaced them, comparing them with the new chainrings I wondered exactly how they were beyond servicable!) and the chain and cassette both had 13500km on them. The chain was a bit past it but was still shifting okay as was the cassette.
So anyway went ahead and had a big day pulling the front end apart and fitting all the new bits.
All went well and the results can be seen below.
WhiteSilvio
Well-Known Member
Another Chainstay Extension Fitted
The only drawback so far is that the Garmin sensor for speed and cadence cannot do both functions where it was on the carboyoke.
I have a remedy for this but haven't had time to do something about it.
Additionally I think I'd like to live with the new setup for just a little while, in case there is some chance I want to revert to the original setup e.g. no chain stay extension.
I don't think there's too much likelihood of that.
I think there may be some tinkering to be done with the leg length adjustment and probably the handlebar positioning.
Initial impressions are that there are no downsides to the new arrangement (apart from the Garmin Sensor), in fact the most noticeable improvement is the difference in contact between the back of the leg and the front edge of the seat. For me that would be enough on its own to keep the new arrangement.
Riding the bike it feels a little more twitchy (and this may be improved by adjusting the leg length), but low speed handling may, I think, have improved. I surprised myself at the tightness of a U-turn I did, when I thought I'd have to stop and realign the bike to get around a tight 180 degree cornering situation.
Just a few thoughts about the conversion after just 65km of riding. Probably not long enough for a conclusion, but hey that never stopped anyone from having an opinion!
Regards,
John.
The only drawback so far is that the Garmin sensor for speed and cadence cannot do both functions where it was on the carboyoke.
I have a remedy for this but haven't had time to do something about it.
Additionally I think I'd like to live with the new setup for just a little while, in case there is some chance I want to revert to the original setup e.g. no chain stay extension.
I don't think there's too much likelihood of that.
I think there may be some tinkering to be done with the leg length adjustment and probably the handlebar positioning.
Initial impressions are that there are no downsides to the new arrangement (apart from the Garmin Sensor), in fact the most noticeable improvement is the difference in contact between the back of the leg and the front edge of the seat. For me that would be enough on its own to keep the new arrangement.
Riding the bike it feels a little more twitchy (and this may be improved by adjusting the leg length), but low speed handling may, I think, have improved. I surprised myself at the tightness of a U-turn I did, when I thought I'd have to stop and realign the bike to get around a tight 180 degree cornering situation.
Just a few thoughts about the conversion after just 65km of riding. Probably not long enough for a conclusion, but hey that never stopped anyone from having an opinion!
Regards,
John.
John Tolhurst
Zen MBB Master
Helpful report
Helpful report, thanks John.
Just looking at your handlebar setup, and thinking the better way of putting the bars there might be using an extention to the fork steerer. Then you may not need the stem, and the handlebar would again be directly connected to the BB, which should pay off in better performance under maximum power (hills, sprints, acceleration).
Helpful report, thanks John.
Just looking at your handlebar setup, and thinking the better way of putting the bars there might be using an extention to the fork steerer. Then you may not need the stem, and the handlebar would again be directly connected to the BB, which should pay off in better performance under maximum power (hills, sprints, acceleration).
Silvio 1.0 / 100mm
Finally installed. Adjust handlebars and boom.[41 x-seam] Bikes bottom bracket was 3 inch above seat height and now 8 inch above seat hgt..Boom now more horizontal[stiffer]. Improvement in every aspect.Speed,climbing, sprinting, and improve aero ! All for under $100.00 and a few chain links. : )
Finally installed. Adjust handlebars and boom.[41 x-seam] Bikes bottom bracket was 3 inch above seat height and now 8 inch above seat hgt..Boom now more horizontal[stiffer]. Improvement in every aspect.Speed,climbing, sprinting, and improve aero ! All for under $100.00 and a few chain links. : )
