Fit crown race to one inch threaded headset
Fit crown race to one inch threaded headset
I need to fit a new headset for this old bike.
I have removed the old headset, cups and crown race. I have ordered a new one (made of steel, which I think are likely to be less problematic on a cheap bike with so-so tolerances).
It is a 1 inch headset.
I am happy banging in the steel cups with a wooden mallet, but any thoughts on fitting the crown race?
If I use plumbers plastic piping, any idea of the size for going over a one-inch steerer?
(My old headset - bit of a gash mixture of old Raleigh steel and Miche aluminium has just been insanely over-tightened and ruined by someone who really hadn't a clue in the local bike shop. Suppose the young lad only does threadless these days Now completely impossible to tighten the headset properly.)
Daily: Carlton Courette 1982 mixte 42, 32, 22 x7
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Re: Fit crown race to one inch threaded headset
Make sure you get the correct size. Measure the one you remove to check if it's an ISO 26.4mm or jis 27.0mm you need.
I use a steel tube to knock mine on.
Be aware that older raleigh bikes had a propriety size of fork threading as listed in Sheldon Browns crib sheet here. https://www.sheldonbrown.com/cribsheet-headsets.html
I use a steel tube to knock mine on.
Be aware that older raleigh bikes had a propriety size of fork threading as listed in Sheldon Browns crib sheet here. https://www.sheldonbrown.com/cribsheet-headsets.html
Last edited by rjb on 9 Jun 2021, 7:41pm, edited 2 times in total.
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840
Re: Fit crown race to one inch threaded headset
I take it you don't have a crown-race fitting tool? Mine has a sleeve and does both sizes.
Re: Fit crown race to one inch threaded headset
A bit of care and you will get it to seat properly with just a hammer and a softish drift. Just go all the way round gently. Takes a bit more finesse that using a tool but nothing special. I even used a block of wood once with a inch hole in it to avoid tapping the race but decied that a brass punch was easier.
Re: Fit crown race to one inch threaded headset
Er, something around the 1” mark?
Not sure this would be strong enough if you meet resistance. Some crown races slide on by hand.
Not sure this would be strong enough if you meet resistance. Some crown races slide on by hand.
Spa Audax Ti Ultegra; Genesis Equilibrium 853; Raleigh Record Ace 1983; “Raleigh Competition”, “Raleigh Gran Sport 1982”; “Allegro Special”, Bob Jackson tourer, Ridley alu step-through with Swytch front wheel; gravel bike from an MB Dronfield 531 frame.
Re: Fit crown race to one inch threaded headset
Heat up the crown race in the oven before fitting to expand it.
Re: Fit crown race to one inch threaded headset
I always put the cups in the freezer to help them go in the head tube.
Re: Fit crown race to one inch threaded headset
I bought a Neco steel headset off ebay, which is good.mattsccm wrote: ↑9 Jun 2021, 8:53pm A bit of care and you will get it to seat properly with just a hammer and a softish drift. Just go all the way round gently. Takes a bit more finesse that using a tool but nothing special. I even used a block of wood once with a inch hole in it to avoid tapping the race but decided that a brass punch was easier.
To fit the crown race, I fit front wheel and tyre to soften impact and tapped around the crown race with an old flat head screw driver and a light hammer. It took a while, but worked fine. The other races I hammered in with a wooden mallet. Then loaded up them with loose balls, discarding the bearings that came with it in clamps. Thanks Brucey.
It should last without me having to think about it for years.
PS Best grease gun I have encountered is a hypodermic syringe and blunt needle. Very handy for regreasing items such as Campag Ergopower shifters that I cleaned out with parafin.
Daily: Carlton Courette 1982 mixte 42, 32, 22 x7
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
-
- Posts: 2876
- Joined: 9 Jun 2008, 8:06pm
Re: Fit crown race to one inch threaded headset
An old bit of frame tubing, usually seat tube with the butt at the business end*, is often used as a 1" crown race setter. The proper technique is to hold the tool steady and bang the fork onto it, so it doesn't matter so much that the tubing weighs less than a proper tool. You can always rest the "tool" on the ground.
You have to cut the tube very straight at the end so, if you don't already have a tube saw guide, you might as well buy a crown race setter. Then you can do 1 1/8" races as well.
*about 27mm internal diameter
You have to cut the tube very straight at the end so, if you don't already have a tube saw guide, you might as well buy a crown race setter. Then you can do 1 1/8" races as well.
*about 27mm internal diameter
Re: Fit crown race to one inch threaded headset
That's an interesting tip: so, you can just take out the seat post, insert the fork with crown race and press / knock it in?rogerzilla wrote: ↑15 Jun 2021, 9:31am An old bit of frame tubing, usually seat tube with the butt at the business end*, is often used as a 1" crown race setter. The proper technique is to hold the tool steady and bang the fork onto it, so it doesn't matter so much that the tubing weighs less than a proper tool. You can always rest the "tool" on the ground.
You have to cut the tube very straight at the end so, if you don't already have a tube saw guide, you might as well buy a crown race setter. Then you can do 1 1/8" races as well.
*about 27mm internal diameter
I actually preferred the approach of tapping the inner edge of the crown race, as there is enough of it for a screw driver. But it does go slightly askew, so you need to be careful with the gentle tapping.
Daily: Carlton Courette 1982 mixte 42, 32, 22 x7
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Re: Fit crown race to one inch threaded headset
Nice picture!
(are the colours filtered a little? I know naff-all about photo processing - or in fact photography generally ... )
I also have nothing useful to add to this thread; but have an interest, as my commuter will need this job doing very soon :-/
(are the colours filtered a little? I know naff-all about photo processing - or in fact photography generally ... )
I also have nothing useful to add to this thread; but have an interest, as my commuter will need this job doing very soon :-/
-
- Posts: 2876
- Joined: 9 Jun 2008, 8:06pm
Re: Fit crown race to one inch threaded headset
Seat TUBE! It involves cutting up a scrap frame.Bice wrote: ↑16 Jun 2021, 10:34amThat's an interesting tip: so, you can just take out the seat post, insert the fork with crown race and press / knock it in?rogerzilla wrote: ↑15 Jun 2021, 9:31am An old bit of frame tubing, usually seat tube with the butt at the business end*, is often used as a 1" crown race setter. The proper technique is to hold the tool steady and bang the fork onto it, so it doesn't matter so much that the tubing weighs less than a proper tool. You can always rest the "tool" on the ground.
You have to cut the tube very straight at the end so, if you don't already have a tube saw guide, you might as well buy a crown race setter. Then you can do 1 1/8" races as well.
*about 27mm internal diameter
I actually preferred the approach of tapping the inner edge of the crown race, as there is enough of it for a screw driver. But it does go slightly askew, so you need to be careful with the gentle tapping.
Re: Fit crown race to one inch threaded headset
Only if you are a glutton for punishment ...
Daily: Carlton Courette 1982 mixte 42, 32, 22 x7
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Re: Fit crown race to one inch threaded headset
No, straight out of a Canon MK IV. I hate the 'digital darkroom', having loved the real one.
Daily: Carlton Courette 1982 mixte 42, 32, 22 x7
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch
Van Nicholas Yukon titanium 50/34 10sp
Lazzaretti steel 1996 10sp 48/34
Trek 1.7 10sp 3x 2010;
Ciocc steel 1984 50/34x7
Marin Bolinas Ridge MTB c1995, 7x42, 34, 24
Scott Scale carbon MTB 27.5 inch