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Tire Clearance on 80’s Steel

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Tire Clearance on 80’s Steel

Old 12-01-22, 12:53 PM
  #26  
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I seem to remember some of you guys getting in a tizzy over hipsters taking angle grinders to classic Italian race frames during peak fixie days. I guess that was different, somehow.
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Old 12-01-22, 12:59 PM
  #27  
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That steerer sticking out beneath the crown is only there to avoid the extra step/cost of cleaning it up. Price point. Hello?

Remove it or don't. Still an awesome bike either way. Most importantly, it's YOUR call.
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Old 12-01-22, 01:20 PM
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Originally Posted by Trakhak
I seem to remember some of you guys getting in a tizzy over hipsters taking angle grinders to classic Italian race frames during peak fixie days. I guess that was different, somehow.
The extra steerer that is visible is not so much a feature, like a dropout-hanger, and more an over-sight.
I think O.P. will get away with putting 28's on, even without removing that extension, but it will be close.
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Old 12-01-22, 01:23 PM
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Originally Posted by rccardr
I’d Dremel that excess steerer in a heartbeat.
But then, I do whatever I want without regard for the opinions of others.
So, there’s that.
Yep, a file will never take that down. Dremel or Sawz-All is much better.
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Old 12-01-22, 01:30 PM
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Originally Posted by 79pmooney
pump peg on the HT,
Extra points.
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Old 12-01-22, 03:39 PM
  #31  
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Yo OP is in Tulsa? I'm in Stillwater. Let's meet up and do this dance. I've been down this road so many times. No dremeling needed.
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Old 12-01-22, 04:12 PM
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Originally Posted by Trakhak
I seem to remember some of you guys getting in a tizzy over hipsters taking angle grinders to classic Italian race frames during peak fixie days. I guess that was different, somehow.
I never got into a tizzy and I really don't care if someone wants to reduce the use of their bike moving forward.
With that said, surely you can see how removing a derailleur hanger is fundamentally different from removing excess steerer tube that serves no purpose and was left due to cost to manufacture.
One action removes a useful part of the frame and the other action removes a useless part of the frame. One action limits usability and the other action increases usability.

They seem pretty different to me.
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Old 12-01-22, 04:21 PM
  #33  
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Originally Posted by smd4
Why would you ever want to put on anything larger than 25s?? It's a 1980s road bike, for cryin' out loud. Don't ruin it by trying to turn a Porshe into a Lincoln.
My 83 Fuji has 38's on it with room to spare. It's more like a land cruiser.
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Old 12-01-22, 04:30 PM
  #34  
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Originally Posted by 1989Pre
Yep, a file will never take that down. Dremel or Sawz-All is much better.
I suppose you're probably kidding, but in case not...
As a framebuilder with a couple decades experience ('70s thru '90s), I would always do that with a file. I have all sorts of power tools close to hand but the file is just faster, as well as making the right shape "automatically" by its very nature. Talkiing about a big ol' half-round bastard, makes just the right curve in a few strokes. Example here on my '80s Davidson:


In that case, it was done when the fork was originally made, not an aftermarket mod, but the file strokes are the same either way.
If I'd wanted a bigger radius (like for a fender), I'd have used a bigger half-round.

With the crown out of the way, the front and rear tire clearances are both set by the brake. Here's mine (rear) with a short-reach brake and 30 mm tire, less than 2 mm clearance but that's as good as a mile, works perfectly, as long as you don't want fenders!


Actually now in my dotage I want fatter tires than that, so I'm planning to upgrade that frame to 650b, but that's a whole 'nother level of sacriledge.

Mark B
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Old 12-01-22, 04:31 PM
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Originally Posted by Trakhak
I seem to remember some of you guys getting in a tizzy over hipsters taking angle grinders to classic Italian race frames during peak fixie days. I guess that was different, somehow.
Be extra careful with the angle grinders without the anti kickback brake
My chest, this happened about 10 years ago when I was cutting some steel.

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Old 12-01-22, 04:44 PM
  #36  
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Originally Posted by Schweinhund
Be extra careful with the angle grinders without the anti kickback brake
My chest, this happened about 10 years ago when I was cutting some steel.

That's one way to get a third nipple
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Old 12-01-22, 04:49 PM
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Originally Posted by 1989Pre

The extra steerer that is visible is not so much a feature, like a dropout-hanger, and more an over-sight.
Just think how many grams will be saved in removing/cleaning up that bit, too!

Agreed, this is actually a fix, and completely different to removing braze-ons or hacking off an RD hanger.

DD
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Old 12-01-22, 04:53 PM
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Originally Posted by The Golden Boy
If that were my bike- I'd ******g put monster truck tires, racks and mirrors and bells and streamers and reflectors and lights and chain guards and kickstands and all that **** and put pix up and PM pix to smd4 daily.

I knew a guy who painted his entire house with a 2" brush just because it pissed his neighbor off so much. Guy was a riot.
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Old 12-01-22, 04:54 PM
  #39  
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Originally Posted by shoota
That's one way to get a third nipple
Or just go down to one.
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Commence to jigglin’ huh?!?!

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Old 12-01-22, 05:04 PM
  #40  
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Originally Posted by shoota
Yo OP is in Tulsa? I'm in Stillwater. Let's meet up and do this dance. I've been down this road so many times. No dremeling needed.
I was in Tulsa up until Sept. Me and the Mrs moved to San Diego for a bit before we settle down. I’ll be back for the holidays in a couple weeks though!
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Old 12-01-22, 05:21 PM
  #41  
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If they don't fit, you just have to get another bike that fits them.
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Old 12-01-22, 05:50 PM
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You won’t know until you try but you might even get smooth 30s on there.

And I am with the file it crew...it shouldn’t have been sticking out to begin with.
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Old 12-01-22, 05:58 PM
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Originally Posted by bulgie
...
Talkiing about a big ol' half-round bastard...
...
I'm sure when this super useful thing was being named, the committee was asking, "...seconded. Are there any public comments on the motion?"

"Uh, yeah! Don't you think people are going to giggle every time the words are uttered?"

[laughter] [gavel] "The motion passes."
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Old 12-01-22, 06:05 PM
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Also man, many current gen tires, conti and schwalbe especially, run 1mm-4mm under on our narrower 'regular' old rims. A lot of '28mm' tires are 26mm.
It's not really worth splitting hairs over 1 tire size difference because the actual size often fluctuates that much.
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Old 12-01-22, 06:42 PM
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Originally Posted by DiegoFrogs
I'm sure when this super useful thing was being named, the committee was asking, "...seconded. Are there any public comments on the motion?"

"Uh, yeah! Don't you think people are going to giggle every time the words are uttered?"

[laughter] [gavel] "The motion passes."
Anyone else remember when bastard was a dirty word that children weren't allowed to say? Giving us gems like this lil ditty:
Spider spider on the wall
Ain't you got no sense at all?
Can't you see the wall's been plastered?
Get off the wall you stupid spider!
That was Comedy Gold in 3rd grade lemme tell ya. I had 'em falling off the swingset.

In a long line of similar non-rhymes like
I knew a boy who drove a truck.
Wasn't very smart but he sure could drive.
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Old 12-01-22, 10:56 PM
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No doubt, I’m not banging my head or pulling our hairs to figure anything out. Was just curious but am glad I came here with it. The 700X25 labeled tires measure 25mm now so I may go up in the future. May even file some tubing off if I'm feeling wild! Always worth the convo though. The bike is great. Doesn’t mean I still don’t need to get b(high) with a lil help from my friends 👍. Thanks again all!
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Old 12-01-22, 11:15 PM
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Originally Posted by Trakhak
I seem to remember some of you guys getting in a tizzy over hipsters taking angle grinders to classic Italian race frames during peak fixie days. I guess that was different, somehow.
Grinding off derailleur hangers, cable guides and shifter bosses was limiting the functionality of the bike. Giving the front tyre a bit more room isn't detrimental to it's use.

Having said that, I probably wouldn't do it.
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Old 12-01-22, 11:16 PM
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Originally Posted by bulgie
In a long line of similar non-rhymes like
I knew a boy who drove a truck.
Wasn't very smart but he sure could drive.
What starts with F and ends in UCK?








Fire truck.
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Old 12-02-22, 04:43 AM
  #49  
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Originally Posted by bulgie
I have all sorts of power tools close to hand but the file is just faster,
I'm going to estimate the depth of the extra material here is 1/8". I would be interested in seeing a video of you taking something like this down with a hand file, while not damaging the finish.
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Old 12-02-22, 04:37 PM
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My general philosophy for bikes that won't be ridden off pavement is that if the wheel spins freely the tire fits. (Note: There is a chance that a stick in the wrong place at the wrong time could quickly re-educate me on this topic.)

I put 28's on my Specialized Allez. Here's how it looked with no brake installed (and before repainting the lugs and fork crown):



I don't have a good head-on shot with the brake installed, but this gives you some idea.



If I disconnect the brake cable, the top of the caliper rubs the tire. With the brake set up for riding, it spins just fine. On wet roads, I do get a big build-up of road grit behind the fork.

Not all calipers have the same drop from the fork crown. Depending on the brakes you want to use, that will probably be the limiting factor.
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