Suggestion for a -17 stem.
Moderator: robbosmans
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I have a Bianchi Oltre XR2 (50cm) and want to lower the bar height. Currently using a Deda SuperZero 11 cm stem (40mm clamp height, -8 degrees) and no spacers although the cone spacer is quite tall at 15.5. I can get a lower cone spacer but that will only drop the height by 6.3mm and I think I’d like nearer 15mm as my other bike is 14.2 lower and more comfortable with pretty much every other measurement being the same.
My calculations suggest a -17 stem will drop the bars by 17 mm (assuming the same clamp height) so am looking for suggestions? I know Deda do a -20 degree stem but that would be too low and I think it looks ugly when the stem has a negative drop. As my head tube angle is 71.5 the -17 stem would still have a slight 1.5 degree rise.
I can't seem to find any nice Italian options but I do like the look of is the Zipp Service course SL stem in beyond black as it's understated. It has a 41mm clamp height so would equate to a 16.5mm drop. I’m currently using the Deda SuperZero bars which I like and intend to keep as much as I hate mismatching. the
My calculations suggest a -17 stem will drop the bars by 17 mm (assuming the same clamp height) so am looking for suggestions? I know Deda do a -20 degree stem but that would be too low and I think it looks ugly when the stem has a negative drop. As my head tube angle is 71.5 the -17 stem would still have a slight 1.5 degree rise.
I can't seem to find any nice Italian options but I do like the look of is the Zipp Service course SL stem in beyond black as it's understated. It has a 41mm clamp height so would equate to a 16.5mm drop. I’m currently using the Deda SuperZero bars which I like and intend to keep as much as I hate mismatching. the
Bianchi Oltre XR2 + Campagnolo Super Record 11 + Campagnolo Bora 50C
Litespeed T1 + Campagnolo Chorus 11 + Campagnolo Shamal Ultra
Litespeed T1 + Campagnolo Chorus 11 + Campagnolo Shamal Ultra
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3t Arx Pro/Team
Cheap, relatively light, and stiff enough for me.
Cheap, relatively light, and stiff enough for me.
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I like the shape but, unless i'm mistaken they do not do it in the stealth finish and the white graphics would not look good on my bike.
Bianchi Oltre XR2 + Campagnolo Super Record 11 + Campagnolo Bora 50C
Litespeed T1 + Campagnolo Chorus 11 + Campagnolo Shamal Ultra
Litespeed T1 + Campagnolo Chorus 11 + Campagnolo Shamal Ultra
3T should be lighter than Zipp. Zipp's are between 136 and 142g from my samples. 3T with a few minutes of acetone and you'll have a stealth stem. Another option is to get the lower cone and run a Pro Vibe 7S. They're my new favorite stem and since it's 10*, it'll look better with a sloping TT.
- cyclespeed
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I had this problem with my Sworks Tarmac in 54cm. Had a 140mm headtube and I wasn't low enough, so used a Zipp SL Service Course 120mm -17'. Nice stem. looked good, plenty stiff enough.
Now I've gone down to a 52cm Tarmac (120mm hT), I'm using a 130mm, -6' Zipp SL SC.
Now I've gone down to a 52cm Tarmac (120mm hT), I'm using a 130mm, -6' Zipp SL SC.
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LloydP wrote:Kalloy Uno 7 is available in -17. I use one on my 'daily' bike. Acetone for the logos and it looks at home anywhere.
+1 to those Kalloy ones off Ebay. I've got three, usually around 100g to 110g
Scott Foil RC10 Ultegra 12 speed / Creston 50 - 7.9Kg
Aesthetics-wise, a de-badged Pro stem in -10 combined with the lower bearing cover would look best and would give you the 14 mm difference you are looking for. Otherwise either Kalloy or 3T - but make sure you get the right length if you're getting 3T, since their -17 stems measure around a centimeter longer than other manufacturers'.
How about the Basso diamante stem?
-11° and only 25mm clamp height?
And it is italian made.
http://shop.bassobikes.com/shop-en/part ... ra-11.html
-11° and only 25mm clamp height?
And it is italian made.
http://shop.bassobikes.com/shop-en/part ... ra-11.html
That Basso stem looks gorgeous. Quite a price though.
Compared to a more normal 42mm stem, that's 12.5mm vs 21mm a delta of 8.5mm. It is 10.5mm changing from 17deg to the Basso's 11deg for a 100mm stem, therefore 2mm diff - unnoticeable.
Compared to a more normal 42mm stem, that's 12.5mm vs 21mm a delta of 8.5mm. It is 10.5mm changing from 17deg to the Basso's 11deg for a 100mm stem, therefore 2mm diff - unnoticeable.
Less is more.
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