NOS Klein Quantum
#1
Senior Member
Thread Starter
NOS Klein Quantum
Picked up what I believe is a 1995 Klein Quantum in unused condition. Seller said it started life as a frame that was built up in the shop where he worked and sat unsold for years. It was eventually transferred to the basement to sit. It is covered in dust but basically NOS ~1995 Klein.
What to do with a bike like this?
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/560e7503_889e_4e12_a19e_61be7bfa2126_6edbfe2845e839bab35fba466e7d88970ebf8ea6.jpeg)
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![](https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/c0bb9574_8156_44af_9525_e8ac4a3aa0c3_8dcffbbac404ad6198cfc7cb9c1ce4a04801527c.jpeg)
What to do with a bike like this?
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/560e7503_889e_4e12_a19e_61be7bfa2126_6edbfe2845e839bab35fba466e7d88970ebf8ea6.jpeg)
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#2
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Ride it! My Quantum II was a fast but comfortable ride. Go enjoy that beast!
__________________
Steel is real...and comfy.
Steel is real...and comfy.
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#3
It's MY mountain
Join Date: Sep 2006
Location: Mt.Diablo
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1995 Quantum came with RX100 STI - looks legit and ready to ride.
People like these for criteriums, but my Quantum Pro is the best climbing and descending bike I've ever had... I like stiff.
Unlikely that the shop put a wired computer on a bike they hadn't sold - also the Look pedals would've been by request.
People like these for criteriums, but my Quantum Pro is the best climbing and descending bike I've ever had... I like stiff.
Unlikely that the shop put a wired computer on a bike they hadn't sold - also the Look pedals would've been by request.
#4
Steel is real
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Picked up what I believe is a 1995 Klein Quantum in unused condition. Seller said it started life as a frame that was built up in the shop where he worked and sat unsold for years. It was eventually transferred to the basement to sit. It is covered in dust but basically NOS ~1995 Klein.
What to do with a bike like this?
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/560e7503_889e_4e12_a19e_61be7bfa2126_6edbfe2845e839bab35fba466e7d88970ebf8ea6.jpeg)
![](https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/772796ae_c006_4f41_9438_15a90b0166c9_67198b26ae824488abf56f3489260b9d3f54a3bb.jpeg)
![](https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/c0bb9574_8156_44af_9525_e8ac4a3aa0c3_8dcffbbac404ad6198cfc7cb9c1ce4a04801527c.jpeg)
![](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/9842042b_57e9_43e4_8ebb_9c40e47d1e99_7054388e565b547090295ed62049ac2738598760.jpeg)
What to do with a bike like this?
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/560e7503_889e_4e12_a19e_61be7bfa2126_6edbfe2845e839bab35fba466e7d88970ebf8ea6.jpeg)
![](https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/772796ae_c006_4f41_9438_15a90b0166c9_67198b26ae824488abf56f3489260b9d3f54a3bb.jpeg)
![](https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/c0bb9574_8156_44af_9525_e8ac4a3aa0c3_8dcffbbac404ad6198cfc7cb9c1ce4a04801527c.jpeg)
![](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/9842042b_57e9_43e4_8ebb_9c40e47d1e99_7054388e565b547090295ed62049ac2738598760.jpeg)
#5
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That year of Quantum is going to have the press fit square taper bottom bracket. If you were not OK with the current RX 100 double cranks then you have fewer options for other cranks. You could seek out any 110bcd square taper cranks in order to get a lower gear range for improved hill climbing. You might even get away with running a triple square taper crank with 110/74 bcd such as a deore xt from that era or an XTR M900.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
#6
Senior Member
After that - oh hell yes. Go ride it!
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#7
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Join Date: Jul 2007
Location: South shore, L.I., NY
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I has 2 aluminum Quantums, wish they had lasted. Had top tube sweat corrosion on the brake housing brackets, Klein replaced that frame in '95. The 2nd had its seat post clamp crack in 2000. Could not replace. I would still be using that last bike otherwise, it fit well, climbed great, was comfortable, loved that bike.
I'd ride this one for sure,
I'd ride this one for sure,
#8
Senior Member
Thread Starter
That year of Quantum is going to have the press fit square taper bottom bracket. If you were not OK with the current RX 100 double cranks then you have fewer options for other cranks. You could seek out any 110bcd square taper cranks in order to get a lower gear range for improved hill climbing. You might even get away with running a triple square taper crank with 110/74 bcd such as a deore xt from that era or an XTR M900.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
#9
Senior Member
Thread Starter
1995 Quantum came with RX100 STI - looks legit and ready to ride.
People like these for criteriums, but my Quantum Pro is the best climbing and descending bike I've ever had... I like stiff.
Unlikely that the shop put a wired computer on a bike they hadn't sold - also the Look pedals would've been by request.
People like these for criteriums, but my Quantum Pro is the best climbing and descending bike I've ever had... I like stiff.
Unlikely that the shop put a wired computer on a bike they hadn't sold - also the Look pedals would've been by request.
#10
Full Member
Dust it off, lube and renew where necessary, then ride the heck out of it! Great find! Those bikes were hot BITD.
#11
Along for the ride
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#12
Senior Member
Nice.![Thumbs Up](images/smilies/thumb.gif)
Like Robert A. Heinlein once said about Jerry Pournelle (both sadly now deceased): I am also a "terribul spellur" (or maybe it was "terribul spellar").
Not sure that "spell-check" qualifies as the best thing since sliced bread, but for me it's close. Unfortunately, it doesn't catch those misspellings that also happen to be correctly spelled other words.
![Thumbs Up](images/smilies/thumb.gif)
Like Robert A. Heinlein once said about Jerry Pournelle (both sadly now deceased): I am also a "terribul spellur" (or maybe it was "terribul spellar").
Not sure that "spell-check" qualifies as the best thing since sliced bread, but for me it's close. Unfortunately, it doesn't catch those misspellings that also happen to be correctly spelled other words.
![Smilie](images/smilies/smile.gif)
Last edited by Hondo6; 12-29-22 at 08:09 AM.
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#13
Senior Member
That year of Quantum is going to have the press fit square taper bottom bracket. If you were not OK with the current RX 100 double cranks then you have fewer options for other cranks. You could seek out any 110bcd square taper cranks in order to get a lower gear range for improved hill climbing. You might even get away with running a triple square taper crank with 110/74 bcd such as a deore xt from that era or an XTR M900.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
I know how to remove the BB spindle and bearings but I don't possess an original Klein tool nor do I have an improvised tool that can press in a replacement bottom bracket.
They're unfortunately square taper/68mm only, and spindle lengths are limited. But that certainly beats not being able to ride because the BB is shot.
If so, that might provide a replacement option if/when the original BB fails.
I've never owned a Klein, so I haven't ever had to replace or service a Klein press-fit BB. Anyone out there know whether the threadless repair BB option will work on a Klein frame?
Last edited by Hondo6; 12-29-22 at 08:40 AM.
#14
Senior Member
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