mike barrett 1 | 24/05/2021 08:09:43 |
14 forum posts | I have a 1990's Raleigh bike which has RST suspension fronts forks. The forks have fallen apart (inside springs rusted away) and I dont think I can repair them, Most forks are now plain with a clamp to hold the bearing. I cant find a threaded shaft version that is only 140mm long so was wondering if I could buy a plain version and then cut the shaft down to size and cut a thread on it. The question is what thread is used on the shaft and where can I buy a die for it? Thanks Mike |
Chris Evans 6 | 24/05/2021 08:17:48 |
![]() 2156 forum posts | It is my belief that 1990s bikes are a lottery for thread due to so many parts being made in the east. I have made a new stem for one of my old motorcycles, screwcut at 26 tpi and brazed into the lower yoke. |
Bo'sun | 24/05/2021 09:03:23 |
754 forum posts 2 photos | Good morning Mike, Before you get too involved, check that your selected plain steerer will accept the quill. |
mike barrett | 24/05/2021 09:31:58 |
16 forum posts | Posted by Bo'sun on 24/05/2021 09:03:23:
Good morning Mike, Before you get too involved, check that your selected plain steerer will accept the quill. Good point! One of the problems is finding any technical (sizes) details of what being sold on line. regards Mike
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JasonB | 24/05/2021 10:03:12 |
![]() 25215 forum posts 3105 photos 1 articles | Quite common to have to cut down the steerer on a pair of forks be they old style or new, most likely 1 1/8 x 26tpi see here |
Bo'sun | 24/05/2021 10:28:48 |
754 forum posts 2 photos | Sheldon Brown. Always a good source of reference. |
mike barrett | 24/05/2021 11:47:11 |
16 forum posts | Posted by JasonB on 24/05/2021 10:03:12:
Quite common to have to cut down the steerer on a pair of forks be they old style or new, most likely 1 1/8 x 26tpi see here thanks excellent site! mike |
Bo'sun | 24/05/2021 12:01:32 |
754 forum posts 2 photos | Hi Mike, I'm sure there will be other suppliers of steerer tube dies. This one from "Park Tools" is unlikely to be cheap, but at least they're out there. https://www.parktool.com/product/1-1-8-cutting-die-607?category=Frame%20%26%20Fork It might even be worth seeing if a local bike shop has one you could borrow. |
old mart | 24/05/2021 14:42:40 |
4655 forum posts 304 photos | You might as well forget the threaded stem and just get a plain one with a clamp on top. You can get spacers to raise the handlebar clamp, if you do, then don't cut the fork tube to length first. First, try googling "installing bicycle forks", there are many helpful answers. Edited By old mart on 24/05/2021 14:47:00 |
Roderick Jenkins | 24/05/2021 15:18:13 |
![]() 2376 forum posts 800 photos | If it were me I would replace the headset as well (they don't need to be expensive). You will then have freedom to mix and match to suit your head tube diameter, head set and steerer tube. Rod |
Howard Lewis | 24/05/2021 15:31:16 |
7227 forum posts 21 photos | It used to be that all threads on cycles were 60 degree form and 26 tpi, but with the march of progress, and imported machines and parts that may longer be then case. So you might well be finding replacements that are metric in size and pitch. You might find yourself making Imperial to metric adaptor collars! Howard |
Bo'sun | 24/05/2021 15:35:48 |
754 forum posts 2 photos | The headset is going to have to change anyway, along with the stem, if Mike decides to go down the threadless steerer route. I would also suspect the choice of fork (depending on the quality required) to be somewhat limited, as many are now using tapered steerer tubes. |
Robin Dufton | 24/05/2021 16:04:58 |
38 forum posts 10 photos | Posted by Bo'sun on 24/05/2021 15:35:48:
The headset is going to have to change anyway, along with the stem, if Mike decides to go down the threadless steerer route. Many combos of modern parts aren't guaranteed to work on old Raleighs. I had a headache when trying to sort out a 70s bike and had to make a bush for BMX bars to fit. No stems would fit the fork so it had to be the Raleigh specific stem. Changing the forks would have meant making new bearing cups. |
mike barrett | 24/05/2021 18:34:42 |
16 forum posts | Thanks for all the helpful answers. I am/was trying to keep the bike standard but its begining to be a bit like Trigger's Broom ... it would have been easier to buy a new bike but I do like repairing stuff! But. I can get a 1 1/8" 25 TPI die from one of the online suppliers in stock, buts it £45. Regards Mike Edited By mike barrett on 24/05/2021 18:35:23 |
Neil Wyatt | 25/05/2021 12:53:13 |
![]() 19226 forum posts 749 photos 86 articles | I share your pain, I have an early 90s MBK Triathlete IU'm trying to keep as original as possible, and the hardest thing to source was old style brake blocks to fit the Weinmann side-pull brakes! Is it a mountain bike or a road bike? Personally I wouldn't like to use a bike with a quill stem on anything more than pretty level ground. Neil |
mike barrett | 25/05/2021 13:54:27 |
16 forum posts | Posted by Neil Wyatt on 25/05/2021 12:53:13:
I share your pain, I have an early 90s MBK Triathlete IU'm trying to keep as original as possible, and the hardest thing to source was old style brake blocks to fit the Weinmann side-pull brakes! Is it a mountain bike or a road bike? Personally I wouldn't like to use a bike with a quill stem on anything more than pretty level ground. Neil Its a road bike so I am happy with the quill stem, I have never had any problems with it. cheers mike Mike
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Bo'sun | 25/05/2021 15:22:41 |
754 forum posts 2 photos | Hi Mike, Unusual, a road bike with boingy forks. Surely that wold lift the front up a bit high for a road bike and change the head angle and steering geometry? It's not going to go down well with the hardened roadies out there. |
Roderick Jenkins | 25/05/2021 16:07:39 |
![]() 2376 forum posts 800 photos | It used to be so simple, road bikes had 27" ( or 700C) tyres and mountain bikes had 26". Then hybrids came along with 700C tyres and may or may not have had suspension forks. Back in the day I remember that some pro teams tried suspension forks for the cobbles on Paris/Roubaix. I put my bike together from a cyclo cross frame with carbon forks and cantilever brakes. That was 12 years ago - nowadays you would call it a gravel bike. Definitions and styles constantly change, mostly to do with marketing. Mix and match any combination of bits and you will end up with something that a marketing focus group has already coined a name for. Modern life eh! Rod |
Bo'sun | 25/05/2021 17:12:03 |
754 forum posts 2 photos | Hi Rod, Gravel Bikes. Another fad maybe? or just road bike lovers not liking to admit that off-road biking isn't that bad after all. |
JasonB | 25/05/2021 18:55:20 |
![]() 25215 forum posts 3105 photos 1 articles | Well you could also fit 650B rims to your gravel bike Rod so it can take some wider tyres or even slip a 26" MTB tyre on though 29ers seem to be the way to go on MTBs these days. Never had a problem with old style quill stems on my MTBs both solid fork and Rockshock equipped but then again did not have those big wide 750mm bars they ride now, think my Ritchey's were 500mm Anyone who likes their MTB racing should keep a look out on Redbull TV as they cover all the world cup rounds with both Short course XC on the Friday and Olympic XC on the Sunday. Replays of the first two round of this years worldcup available here and here And for a Small yearly Sub GCN is worth having as they do the full Cyclocross season in the winter and a lot of road stuff the rest of the year, just off to watch the Lotto Ladies tour now, ladies racing seems to be a lot more exciting than the mens as it is attack from the off not a Sunday club run to the last 20k as a lot of the mens stage races seem to be Edited By JasonB on 25/05/2021 18:56:50 |
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