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Search: Posts Made By: dddd
Showing results 1 to 50 of 504
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06-24-22, 05:12 PM
Replies: 11
Views: 168
Posted By dddd

The S P might be only a date code.

The S P might be only a date code.
06-22-22, 03:16 PM
Replies: 11
Views: 276
Posted By dddd

Two things to consider first. A "big"...

Two things to consider first.

A "big" (outer) Biopace ring will always be a relatively round one with only 3-1/2% variation of it's outer radius, while Biopace middle and inner rings will be...
06-15-22, 11:18 AM
Replies: 14
Views: 324
Posted By dddd

Federal safety guidelines were I believe...

Federal safety guidelines were I believe mandatory post-1977.

Some of the rules forced re-designs of for example the crankset and bottom bracket, to accommodate the thicker (lipped) outer cage...
06-14-22, 10:38 AM
Replies: 7
Views: 302
Posted By dddd

Yes, looks like a 1990's design to me. The...

Yes, looks like a 1990's design to me.

The post name is "Italmanubri", ITM for short, Italian maker of primarily stems and bars.
06-12-22, 05:14 PM
Replies: 35
Views: 1,198
Posted By dddd

Probably some hardened detritus got knocked loose...

Probably some hardened detritus got knocked loose along the bearings, would be advisable to remove the 9-ball retainers and install (11) 1/4" balls on each side.

Good work if you saved the...
06-08-22, 07:09 PM
Replies: 35
Views: 1,198
Posted By dddd

Be aware that the crank cotters are hardened,...

Be aware that the crank cotters are hardened, though any replacements sold today typically are not.

So it is imperative not to damage the threaded studs on these cotters with excess removal force....
06-08-22, 11:37 AM
Replies: 62
Views: 1,297
Posted By dddd

Shimano's aesthetic stand-outs, for me, include...

Shimano's aesthetic stand-outs, for me, include the oft-mentioned 7410 crankset, the 7800 brake calipers, and the 7700 rear derailer (which has found it's way onto many of my vintage bikes, used with...
06-06-22, 07:13 PM
Replies: 51
Views: 1,452
Posted By dddd

Some of us will have noticed by now that PTFE...

Some of us will have noticed by now that PTFE particulates are very fast disappearing from the entire lubricant market, often replaced by newer "ceramic" particulates similarly intended to reduce...
06-01-22, 08:59 AM
Replies: 20
Views: 526
Posted By dddd

As one who loves installing certain of the...

As one who loves installing certain of the SunRace chromed freewheels (7-speed for me), I have seen a couple of problems turn up on a few of the perhaps ~30 of them that I have installed.

The...
05-30-22, 09:12 AM
Replies: 29
Views: 3,272
Posted By dddd

Continental-brand wire-bead tires seem to be...

Continental-brand wire-bead tires seem to be among the tightest-fitting (and thus safest) tires available for use on non-hooked clincher rims!

As well, the Araya brand of rims was one of the...
05-24-22, 01:28 PM
Replies: 6
Views: 194
Posted By dddd

Seems that I found the same model as non-fixie's...

Seems that I found the same model as non-fixie's at a local "Man Cave" thrift store.

It has working brakes and drivetrain!

I would like to know where it was made.
...
05-17-22, 01:22 PM
Replies: 23
Views: 748
Posted By dddd

The 4mm change in pad height effects about a 10%...

The 4mm change in pad height effects about a 10% reduction in caliper braking leverage when switching to 700c, one more detail to perhaps ponder.

It's just the opposite though if the bike has...
05-16-22, 11:43 AM
Replies: 32
Views: 1,381
Posted By dddd

The steel style of seatpost top, referred to as...

The steel style of seatpost top, referred to as seatpost "guts" by Ebay sellers, is versatile and usually reliable.
I say "usually" because it's not too uncommon for the toothed hardware clamping...
05-15-22, 10:13 PM
Replies: 161
Views: 4,963
Posted By dddd

Did somebody say Varsity? The older ones have I...

Did somebody say Varsity? The older ones have I believe a 69-degree seat tube angle, so reversing the clamp is a no-brainer.
...
05-14-22, 10:42 PM
Replies: 27
Views: 1,043
Posted By dddd

Oh, same as mine then! I'm sure that yours will...

Oh, same as mine then! I'm sure that yours will be a keeper.
https://cimg5.ibsrv.net/gimg/bikeforums.net-vbulletin/800x600/26321238368_5137ecfb9d_c_543af3268be1a3dff8d9062ca12a5d12836b0151.jpg
05-14-22, 02:04 PM
Replies: 4
Views: 127
Posted By dddd

I sometimes apply such a bend in order to better...

I sometimes apply such a bend in order to better control the chain from possibly over-shifting past the big ring. It works!

The front edge of the cage isn't affected much by cross-chaining, so the...
05-14-22, 01:58 PM
Replies: 27
Views: 1,043
Posted By dddd

Wow! Does it fit you? Looks like a 22-1/2 or...

Wow! Does it fit you? Looks like a 22-1/2 or 23-inch(?).
Those Phil hubs look like 1st-generation parts. Be sure to loosen any quick-release skewer that's holding a freewheel remover tool in place...
05-13-22, 10:06 PM
Replies: 13
Views: 338
Posted By dddd

Starting in 1979, the inexpensive U08/9/10 models...

Starting in 1979, the inexpensive U08/9/10 models had a completely new frame and fork, still having lugs but made from a better "103" Carbolite tubing.

The geometry was also completely reworked,...
05-13-22, 04:52 PM
Replies: 32
Views: 1,381
Posted By dddd

Bigger, old bikes that I want to do serious...

Bigger, old bikes that I want to do serious riding on, if the geometry is slack, I'll either buy a zero-offset post for it or flip the post if it's a decent alloy one.
...
05-06-22, 04:29 PM
Replies: 13
Views: 331
Posted By dddd

I've dealt with this exact situation a few times...

I've dealt with this exact situation a few times before.

I used the same technique on all of them, based not on metal removal but on forming the opening round again.

Get thee a steel or...
05-02-22, 11:14 PM
Replies: 12
Views: 350
Posted By dddd

Park double-sided puller should work using the...

Park double-sided puller should work using the larger 23mm end.
05-02-22, 11:03 PM
Replies: 6
Views: 204
Posted By dddd

1/8" sounds more like it to me. Even the...

1/8" sounds more like it to me.

Even the Huret ball-bearing derailer pulleys are 1/8", and look about the same size as freewheel bearings by my recollection.

1/16" bearings might be used on a...
05-01-22, 08:01 PM
Replies: 31
Views: 738
Posted By dddd

You can't fit a 7s cassette on a 6s freehub. ...

You can't fit a 7s cassette on a 6s freehub.

No 11t smallest cog will fit on a non Dura-Ace freehub that doesn't use a separate lockring to secure the cogs. Your freehub cannot take an 11t cog.
...
05-01-22, 02:37 PM
Replies: 3
Views: 231
Posted By dddd

4mm Allen key through the hole in the front of...

4mm Allen key through the hole in the front of the lever.
04-19-22, 09:18 PM
Replies: 35
Views: 1,123
Posted By dddd

That's my approach as well. Beware though,...

That's my approach as well.

Beware though, that the "locking cone" on many cheap modern freewheels may actually bend if you put a hammer and punch to it (as I've found out the hard way).
With...
04-17-22, 09:37 AM
Replies: 7
Views: 264
Posted By dddd

Of course with used bikes we don't know the...

Of course with used bikes we don't know the history of any of the bike's parts, yet we ride them!:eek:

And in many or most cases, there is no one that we can sue if something bad happens.

I've...
04-09-22, 01:34 PM
Replies: 5
Views: 187
Posted By dddd

I've dealt with this issue many times after...

I've dealt with this issue many times after installing a wider freewheel or even just a different wheel.

I strongly resist having to extend the DS axle overhang since that messes with the...
04-06-22, 08:58 PM
Replies: 29
Views: 3,272
Posted By dddd

This was my experience as well, I routinely ran...

This was my experience as well, I routinely ran 90psi on many of the 1970's Araya hookless alloy rims and never had a tire blow off.

Weinmann on the other hand definitely had QC issues relating to...
04-06-22, 08:38 PM
Replies: 29
Views: 1,442
Posted By dddd

Age- and use-hardened pads are by far the biggest...

Age- and use-hardened pads are by far the biggest culprit in terms of generating shards from perfectly good rims and then galling the rim's surface.

Most DiaCompe road pads seem to be immune from...
04-02-22, 04:49 PM
Replies: 305
Views: 134,593
Posted By dddd

The only tires that are available in 27" sizes...

The only tires that are available in 27" sizes and having been tested for rolling resistance would be the Continental Ultrasport and Ultrasport III, although versions of the Vittoria Zaffiro that...
03-31-22, 10:23 AM
Replies: 32
Views: 1,217
Posted By dddd

The relative length of the head tube (of two...

The relative length of the head tube (of two bikes having identical seat tube lengths) is directly affected by the fork's axle-to-crown length as well as by the bottom bracket drop dimension.
So...
03-31-22, 09:55 AM
Replies: 30
Views: 929
Posted By dddd

Nothing that you did out at the dropouts is...

Nothing that you did out at the dropouts is affecting the grip on the seatpost.

What kind of indication led to the clamp seeming to "go tighter on one half"? Do the ears remain equally parallel?...
03-27-22, 11:12 PM
Replies: 6
Views: 368
Posted By dddd

Abrupt and noisy, ...compared to what other...

Abrupt and noisy, ...compared to what other freewheels?

Uniglide cogs were the best-shifting cogs, right up until the Hyperglide cogs replaced them (Hyperglide was intended to allow full-power...
03-26-22, 09:40 AM
Replies: 30
Views: 929
Posted By dddd

My 1984 PKN10 with 24mm seatpost has this very...

My 1984 PKN10 with 24mm seatpost has this very same problem, so I found that I had to lengthen the slot downward in order to allow sufficient clamping force to be generated with a standard binder...
03-26-22, 09:07 AM
Replies: 22
Views: 554
Posted By dddd

No. The 979 and later 992 were both made of...

No. The 979 and later 992 were both made of aluminum tubes bonded to cast aluminum lugs.

The OP has 130mm hubs, but another choice (that I employed in order to get more gears on my 126mm-spaced...
03-22-22, 08:40 PM
Replies: 86
Views: 3,059
Posted By dddd

My Klein's paint and fork crown were the reasons...

My Klein's paint and fork crown were the reasons why I bought it.
...
03-21-22, 06:51 PM
Replies: 10
Views: 419
Posted By dddd

I oil up the entire innards of all friction and...

I oil up the entire innards of all friction and SIS downtube levers, never had more than a very short-term issue with them slipping after.

I actually never clean anything before loosening the...
03-19-22, 10:25 AM
Replies: 2
Views: 158
Posted By dddd

Looser spokes tend to break much more frequently,...

Looser spokes tend to break much more frequently, and tend to insuffiently support the rim against higher loadings in use in all directions.

But older rims having 36 spoke holes hold up well with...
03-15-22, 06:46 PM
Replies: 8
Views: 248
Posted By dddd

That screw stud was almost certainly set in place...

That screw stud was almost certainly set in place at the factory using permanent threadlocker.

The intention here was that turning even a corroded female hex fastener against this stud would never...
03-10-22, 07:14 PM
Replies: 14
Views: 608
Posted By dddd

There were I believe 1"-tubed youth models sold...

There were I believe 1"-tubed youth models sold in Europe, as well as accurate Varsity clones made in the Netherlands!

This one branded DBS Winner, "made in Sweden" iir....
02-26-22, 10:00 PM
Replies: 23
Views: 1,170
Posted By dddd

That's assuming that the cap is configured to...

That's assuming that the cap is configured to hold an O-ring to good effect.

Making injection molds to high standards is quite expensive, so Chinese vendors selling lowest-cost items will have...
02-21-22, 12:34 PM
Replies: 53
Views: 1,399
Posted By dddd

Didn't jdawginsc just mention Roval wheels? ...

Didn't jdawginsc just mention Roval wheels?
1969 PX10 resto-mod (rescued from The Off Ramp's dumpster in 1998):...
02-15-22, 06:43 PM
Replies: 57
Views: 7,135
Posted By dddd

Definitely leave the BB alone, it will last...

Definitely leave the BB alone, it will last almost forever.

Also would be possible to remove the crank arms and the bearing seals, but some bit of grit WILL end up inside of each bearing.

I've...
02-11-22, 10:15 PM
Replies: 77
Views: 3,115
Posted By dddd

I hope the repair is as easy as removing the pump...

I hope the repair is as easy as removing the pump and filling the hole with a bolt, with a nut and Loctite on the other end of it(?).
02-03-22, 11:27 AM
Replies: 76
Views: 3,065
Posted By dddd

The Mountain Bike Museum in Fairfax, Marin,...

The Mountain Bike Museum in Fairfax, Marin, California has been my go-to these past few years, always a good turn out and fun to meet a few fellow members of the museum, and of this forum.
01-30-22, 06:19 PM
Replies: 7
Views: 482
Posted By dddd

On most if not all Shimano derailers, one can...

On most if not all Shimano derailers, one can relocate the cable to the other side of the pinch bolt, thus shortening the effective arm length and thus increase the derailer's travel in response to...
Forum: Recumbent
01-27-22, 08:04 PM
Replies: 12
Views: 1,477
Posted By dddd

I bought the air-suspended model of that bike,...

I bought the air-suspended model of that bike, it's a 3X8 with SRAM S7 rear derailer and 1:1 twist-shifters.

Mine with the high seat-back is prone to cracking the saddle frame, and the sliding...
01-26-22, 10:07 AM
Replies: 28
Views: 4,542
Posted By dddd

The Limited was preceded by the Japanese-built...

The Limited was preceded by the Japanese-built Super in a similar price range. The Limited has a bit gentler geometry.

Be sure to inspect any used Campy crank purchase for cracks at the...
01-24-22, 09:04 AM
Replies: 26
Views: 822
Posted By dddd

My 1984 Miyata 912 weighs 24lbs, so that Raleigh...

My 1984 Miyata 912 weighs 24lbs, so that Raleigh with a 3-4lb bag on it has to be at least 30# in my estimation.

Whether a scale is "digital" or not says nothing about it's accuracy.

The...
01-20-22, 05:22 PM
Replies: 28
Views: 1,237
Posted By dddd

You bought it used. The rear hub could have...

You bought it used.

The rear hub could have a problem with one of the bearing cages or the choice of lubricant, which may have thickened.

Spinning it in your hand, the balls might drag around...
Showing results 1 to 50 of 504
 


 
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