Jimmy Mack Posted November 1, 2019 Posted November 1, 2019 I am replacing the fork on my 2015 Scott Scale 950. The original fork, a Fox Evolution Series, has a straight steerer. The replacement fork, also a Fox Revolution Series has a tapered steerer. I purchased a headset kit from my local bike shop but found that the bearings do not fit into the end cups. The bike mechanic informed me that the end cups are unnecessary. When I asked how the bearings would seat without the end cups he seemed confused. Can anyone tell me if the conversion from straight steerer to taper steerer is possible on this model Scott Scale and if so, how it's done?
Longbarn Killer Posted November 1, 2019 Posted November 1, 2019 I've never tried this, but I have always been lead to believe that if your frame is designed for a straight steerer, a tapered fork will not fit. You can fit a straight steerer to a tapered frame by using adaptors, but not the other way round. Maybe I am wrong, but I don't think so.
ValeYellow Posted November 1, 2019 Posted November 1, 2019 as far as I know, this frame is tapered. It may have had a straight steerer fork fork fitted and the external cups may be there as to accommodate this narrow steerer. Sounds like you need to change the cups and the tapered steerer will fit perfectly.
gemmerbal Posted November 1, 2019 Posted November 1, 2019 You’ll need new cups, a bearing press of some sort and of course new bearings. The bearing press is for fitting the new cups squarely in the frame headtube and is the most critical part of this conversion. The cups can be expensive, precisely why i decided to stick with a straight steerer fork (my budget was tight but i needed a new fork).
gemmerbal Posted November 1, 2019 Posted November 1, 2019 The tapered cup will sit externally and will affect the headtube angle ever so slightly. But this conversion can be done, as mentioned, new cups can be pricey. I've never tried this, but I have always been lead to believe that if your frame is designed for a straight steerer, a tapered fork will not fit. You can fit a straight steerer to a tapered frame by using adaptors, but not the other way round. Maybe I am wrong, but I don't think so.
Me rida my bicycle Posted November 1, 2019 Posted November 1, 2019 Scale 950 2015 will take a tapered steerer. Have a 2016 940 which is the same frame and running tapered steerer.
Me rida my bicycle Posted November 1, 2019 Posted November 1, 2019 What does the crown race look like on the straight steerer?
Me rida my bicycle Posted November 1, 2019 Posted November 1, 2019 Worst case you need to change bottom cup and bearing.
AndrewMo Posted November 2, 2019 Posted November 2, 2019 If I were you, step one would be finding a new local bike shop... I am replacing the fork on my 2015 Scott Scale 950. The original fork, a Fox Evolution Series, has a straight steerer. The replacement fork, also a Fox Revolution Series has a tapered steerer. I purchased a headset kit from my local bike shop but found that the bearings do not fit into the end cups. The bike mechanic informed me that the end cups are unnecessary. When I asked how the bearings would seat without the end cups he seemed confused. Can anyone tell me if the conversion from straight steerer to taper steerer is possible on this model Scott Scale and if so, how it's done?
MORNE Posted November 2, 2019 Posted November 2, 2019 It’s as easy as getting a new headset or even half a headset(bottom cup) as already suggested for that frame. There might even be a reducer crown race on the fork which means you wouldnt even need a new headset as Suggested already too. Your bike mechanic sounds........’.uninformed’
Jimmy Mack Posted November 2, 2019 Author Posted November 2, 2019 What does the crown race look like on the straight steerer?The straight steerer, on the left, has a flat race that had an open ballbearing. The replacement fork on the right has a chamfered race.
Me rida my bicycle Posted November 2, 2019 Posted November 2, 2019 The straight steerer, on the left, has a flat race that had an open ballbearing. The replacement fork on the right has a chamfered race.Forks 1.jpgno need to replace bottom cap or bearing that straight steerer has a large crown race to fit in the tapered bearing. The new fork should fit as is or you might need a spacer underneath but that should fit as is.
Jimmy Mack Posted November 2, 2019 Author Posted November 2, 2019 If I were you, step one would be finding a new local bike shop...Done and dusted.
Recommended Posts
Archived
This topic is now archived and is closed to further replies.