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Search: Posts Made By: DaveSSS
Showing results 1 to 50 of 1000
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04-16-24, 07:24 AM
Replies: 6
Views: 167
Posted By DaveSSS

Do a Google search for the make, model and year. ...

Do a Google search for the make, model and year. That should bring up a geometry chart. Frame size numbers or letters have become meaningless. Look at stack and reach values, if comparing the size...
04-16-24, 07:18 AM
Replies: 24
Views: 451
Posted By DaveSSS

Try the tire pressure calculator at Zipp.com. I...

Try the tire pressure calculator at Zipp.com. I run tubeless tires on hookless rims. Using 28/30mm tires I no more than 55psi. I check the pressure before every ride.
...
04-15-24, 08:04 AM
Replies: 45
Views: 1,515
Posted By DaveSSS

It's time to move on to a modern bike with...

It's time to move on to a modern bike with electronic shifting, wider tubeless tires and disc brakes. I dig that four years ago. No regrets. The ride is so much better with far less tire pressure.
Forum: Road Cycling
04-08-24, 10:53 AM
Replies: 24
Views: 607
Posted By DaveSSS

ETT is not needed to determine if a bike fits. It...

ETT is not needed to determine if a bike fits. It might have some value if it actually told the difference in saddle setback, but it doesn't. I've bought my last 6 frames using stack and reach only,...
Forum: Road Cycling
04-08-24, 08:17 AM
Replies: 24
Views: 607
Posted By DaveSSS

This analysis is wrong. If the saddle is placed...

This analysis is wrong. If the saddle is placed in the same position relative to the BB, the reach will only differ by 3mm. Your analysis compares reach to the seat post at the stack height. ...
Forum: Road Cycling
04-08-24, 08:06 AM
Replies: 24
Views: 607
Posted By DaveSSS

Effective top tube is irrelevant when using stack...

Effective top tube is irrelevant when using stack and reach. What is relevant is the seat tube angle. In rare instances, a frame might have an oddball STA that would require a seat post with zero...
Forum: Road Cycling
04-05-24, 01:12 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

Traction is going to be better with 28-32mm...

Traction is going to be better with 28-32mm tubeless tires that are used at far lower air pressures than old school narrow tubulars. I don't know what aspect of handling you're talking about that's...
Forum: Road Cycling
04-01-24, 06:56 AM
Replies: 8
Views: 307
Posted By DaveSSS

My saddle height from the center of the crank is...

My saddle height from the center of the crank is 72-73cm. That's the most common way to measure it. If I measured to the pedal spindle, that would add 17cm. Even though I'm old, I use a saddle to bar...
Forum: Road Cycling
03-30-24, 05:57 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Unless someone accurately tests and proves that...

Unless someone accurately tests and proves that there's something, magical about a 28mm tire over a 30mm, the simple answer is to change to 30. My latest Pirelli P-Zero ROAD TLR tires in 30mm aren't...
Forum: Road Cycling
03-29-24, 11:22 AM
Replies: 14
Views: 512
Posted By DaveSSS

I have a rigid tape measure with a fixed pin at...

I have a rigid tape measure with a fixed pin at one end layed out on a work bench. Place one end over the pin and read the length at the other. Quick and absolutely full-proof. It's aldo the...
Forum: Road Cycling
03-29-24, 07:00 AM
Replies: 14
Views: 512
Posted By DaveSSS

Use the chain length formula. I tried one online...

Use the chain length formula. I tried one online calculator and it was wrong. For my 46/30 crank, 10-36 cassette and 415mm chain stays : 46+36= 82. 82/4=20.5. 415/25.4=16.34. 16.34x2=32.68....
Forum: Road Cycling
03-29-24, 06:34 AM
Replies: 30
Views: 933
Posted By DaveSSS

No one has mentioned standing or seated climbing...

No one has mentioned standing or seated climbing in combination with their gear ratios. If the hills are short enough, standing usually allows two sprockets smaller to be used. Instead of my 36, I'd...
Forum: Road Cycling
03-28-24, 04:00 PM
Replies: 30
Views: 933
Posted By DaveSSS

I rode Campy equipped bikes for 25 years. I put a...

I rode Campy equipped bikes for 25 years. I put a 53/39/28 FSA crank on for the Colorado mountains in 2003.

Times have changed. Get a new bike with a modern 12 speed drivetrain. I've been using...
Forum: Road Cycling
03-26-24, 06:30 AM
Replies: 6
Views: 211
Posted By DaveSSS

Try wheels manufacturing. They make thread...

Try wheels manufacturing. They make thread together BBs for many combinations. I have BB86 and 386 frames and use Shimano GRX cranks. They don't seem to make a 386 with angular contact bearings,...
Forum: Road Cycling
03-25-24, 06:46 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

It's sad when the CPA president makes such...

It's sad when the CPA president makes such ignorant remarks. Disc brakes should be better when extreme braking is required. The increase in bike weight is meaningless when all riders use them....
Forum: Road Cycling
03-24-24, 05:09 PM
Replies: 48
Views: 1,212
Posted By DaveSSS

Crank arm length and shoe stack height both must...

Crank arm length and shoe stack height both must be considered. Measuring the exact area of the saddle also varies.
Forum: Road Cycling
03-24-24, 06:40 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Thanks. So my Pirelli P-Zero race TLR tires are...

Thanks. So my Pirelli P-Zero race TLR tires are are TSS, as are most tubeless tires these. These tires are also clinchers. If you make a tubeless road tire today that's not TSS, then you're behind...
Forum: Road Cycling
03-23-24, 11:46 AM
Replies: 8
Views: 307
Posted By DaveSSS

I'm 66 inches or 168vm tall, with long legs. My...

I'm 66 inches or 168vm tall, with long legs. My saddle height is 72-73cm. I had a C-RS in a 48cn with no spacers and a -17 x100 mm stem to produce an 11cm saddle to bar drop.

​​​​I'd say you need...
Forum: Road Cycling
03-23-24, 06:34 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Most tires that are tubeless approved are now...

Most tires that are tubeless approved are now hookless approved too. Michelin was an exception in their early days of tubeless because the bead stretched too much.

What does TL mean? Tubeless...
Forum: Road Cycling
03-22-24, 06:45 AM
Replies: 35
Views: 1,233
Posted By DaveSSS

Great image of the different rim shapes. The...

Great image of the different rim shapes. The ledge diameter is critical and so is minimal stretch of the tire bead that must be a tight fit. One major difference between the drawing of hookless...
Forum: Road Cycling
03-22-24, 06:27 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

I've read reports from MTB users that carbon rims...

I've read reports from MTB users that carbon rims are far less likely to be damaged than the aluminum rims that they had been using. No going back to aluminum for them
Forum: Road Cycling
03-22-24, 06:16 AM
Replies: 23
Views: 1,123
Posted By DaveSSS

I've switched to Pirelli P-Zero race or road TLR...

I've switched to Pirelli P-Zero race or road TLR tubeless tires because the bead stretch is minimal for use with hookless rims. I'm just starting to use the cheaper road TLR. Tire life is good. As...
Forum: Road Cycling
03-22-24, 06:09 AM
Replies: 190
Views: 9,299
Posted By DaveSSS

Not all rim tapes are alike and they must be the...

Not all rim tapes are alike and they must be the correct width to completely cover the ledge on both sides. Scotch 8898 is often recommended, but widths are limited. My BTLOS wheels have no spoke...
Forum: Road Cycling
03-21-24, 10:41 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

A pot hole wouldn't be readily visible. Riding...

A pot hole wouldn't be readily visible. Riding right along a guard rail isn't very smart either, but it's common to see riders completely off the road when part of a wide peloton. A wheel could...
Forum: Road Cycling
03-20-24, 11:43 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

No 28s with 25mm IW rims. 28 should be OK with...

No 28s with 25mm IW rims. 28 should be OK with their 23mm rims like 303s. This is CYA statement.
03-20-24, 07:24 AM
Replies: 99
Views: 2,634
Posted By DaveSSS

A bike with a mast that's too tall is the wrong...

A bike with a mast that's too tall is the wrong size or wrong model. They list a seat rail height. Don't buy the wrong one.
Forum: Road Cycling
03-19-24, 03:34 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

Thread together BBs are a good solution for press...

Thread together BBs are a good solution for press fit bottom brackets. I have Wheels Manufacturing thread together with angular contact bearings on all of my bikes. I also have disc brakes,...
Forum: Road Cycling
03-19-24, 10:53 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Not necessarily. Buyers can always make a deal...

Not necessarily. Buyers can always make a deal to change out wheels, unless you're ordering online. You can also sell those wheels as new.

​​​​​I haven't bought a pre-built bike in the last 30...
Forum: Road Cycling
03-19-24, 07:17 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

My main argument is the stupidity of comparing...

My main argument is the stupidity of comparing heavy car and truck tires with exceptionally strong beads and sidewalls to bike tires. They have nothing in common other than hookless rims. He also...
Forum: Road Cycling
03-18-24, 03:34 PM
Replies: 25
Views: 565
Posted By DaveSSS

Garmin probably only takes samples ever 5-10...

Garmin probably only takes samples ever 5-10 seconds and will always report the grade that you've passed. It's good enough since you already know you're on a steep section. You just select your...
Forum: Road Cycling
03-18-24, 10:47 AM
Replies: 25
Views: 565
Posted By DaveSSS

I ride hilly and mountainous terrain in northern...

I ride hilly and mountainous terrain in northern Colorado. I get relatively good agreement when I ride the same routes with 2-5000 feet of climbing. A peak elevation may vary by plus or minus feet...
Forum: Road Cycling
03-18-24, 10:35 AM
Replies: 21
Views: 851
Posted By DaveSSS

I hunt for bargains. I've had Sidi and custom...

I hunt for bargains. I've had Sidi and custom shoes, but now use some cheap Fizik that work just fine.
Forum: Road Cycling
03-18-24, 10:22 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

A lot my engineering career was spent working on...

A lot my engineering career was spent working on processes to make critical components for the W82 nuclear weapon. No PE required. No PE required for designing construction projects within the 3...
Forum: Road Cycling
03-18-24, 08:49 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Go to 32:00 on the video. This was mentioned...

Go to 32:00 on the video. This was mentioned before my response. The engineer first says that car tires and the like require huge forces from machinery to mount. Then he says that any tire that...
Forum: Road Cycling
03-18-24, 07:29 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

The point of the first video was that even using...

The point of the first video was that even using plastic tools to install bike tires means that the tires don't fit tight enough. That engineer has apparently never used a bead jack. He also...
Forum: Road Cycling
03-17-24, 03:12 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

Watch the comments in the video about installing...

Watch the comments in the video about installing car tires compared to bike tires and the reasoning that explains why car tires are perfectly safe, but hookless bike tires aren't....
Forum: Road Cycling
03-17-24, 07:00 AM
Replies: 51
Views: 1,879
Posted By DaveSSS

I have 3 sets of BTLOS wheels that all cost under...

I have 3 sets of BTLOS wheels that all cost under $800 per set. They've been great so far. They have many different rim profiles available. I have on 44mm deep set that can get dicey on windy...
Forum: Road Cycling
03-16-24, 07:52 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

Regarding the Hambini video, of course the stress...

Regarding the Hambini video, of course the stress formulas are correct, but his flexing of the rim flanges is lame. They're not all the same. Hooks can be present, but minimal and relatively...
03-15-24, 11:03 AM
Replies: 123
Views: 4,005
Posted By DaveSSS

There are very few new tools needed for hydraulic...

There are very few new tools needed for hydraulic disc brakes, other than a bleed kit for your brand of brakes. Centerloc rotor lock rings use one of two types of Shimano tools that have been around...
Forum: Road Cycling
03-15-24, 10:05 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

This thread has strayed far from it's beginning....

This thread has strayed far from it's beginning. The latest info on the hookless rim situation now says that the wheel hit something hard enough to break it.

...
Forum: Road Cycling
03-12-24, 11:36 AM
Replies: 39
Views: 1,266
Posted By DaveSSS

With road biking, I never use the map because I...

With road biking, I never use the map because I know my routes. I have 8 items displayed on the main screen and rarely need the few other items, so don't often change screens. SRAM' doesn't have...
03-12-24, 07:02 AM
Replies: 24
Views: 812
Posted By DaveSSS

Those who ride motorcycles know that you have to...

Those who ride motorcycles know that you have to counter steer through the entire turn. Bicycles and motorcycles are alike in that requirement, but the motorcycle requires more force.

To assess...
Forum: Road Cycling
03-11-24, 08:24 AM
Replies: 39
Views: 1,266
Posted By DaveSSS

I have small hands and no problems with Force D1...

I have small hands and no problems with Force D1 brake hoods on three bikes. I've never used SRAM cranks because I want more range. Campy Chorus 48/32 or Shimano GRX cranks work great - no chain ...
Forum: Road Cycling
03-11-24, 08:13 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

They work fine if you follow the manufacturer's...

They work fine if you follow the manufacturer's instructions on rim width and tire pressure. 25mm tires mostly require hookless rims with 21mm IW or less. Most 28mm work with 25mm IW, per...
Forum: Road Cycling
03-10-24, 07:06 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

There's always plenty of safety margin included...

There's always plenty of safety margin included in the published limit values. There has to be, just to cover variations in pressure gauge readings. There is no need to add your own extra safety...
Forum: Road Cycling
03-09-24, 04:34 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

I suggest reading the info at the Giant website...

I suggest reading the info at the Giant website regarding hookless rims. Apparently, they couldn't care less what ETRTO or ISO have to say. They're confident that their wheels and tires will work...
Forum: Road Cycling
03-09-24, 08:03 AM
Replies: 608
Views: 19,702
Posted By DaveSSS

This article has the best info I've read. I will...

This article has the best info I've read. I will continue to use 28mm tires on my BTLOS hookless 25mm IW rims. I've tested setups to 85 psi with no blow offs. I have used early model Michelin...
Forum: Road Cycling
03-08-24, 03:37 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

The latest ETRTO guidelines limiting 30-34mm...

The latest ETRTO guidelines limiting 30-34mm tires to 65 psi is more limiting than what's stamped on my 30 mm Pirelli tires. They say 73 is OK. I believe that ETRTO guidelines only apply to products...
Forum: Road Cycling
03-08-24, 01:09 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

None of my BTLOS or Zipp carbon wheels ever made...

None of my BTLOS or Zipp carbon wheels ever made any noise.
Forum: Road Cycling
03-08-24, 01:02 PM
Replies: 608
Views: 19,702
Posted By DaveSSS

Increasing the total bike/rider weight from 260...

Increasing the total bike/rider weight from 260 to 270 pounds only increases the recommended tire pressure by 1.3 psi. If I weighed that much I'd be on 32mm tires where there's a significant safety...
Showing results 1 to 50 of 1000
 


 
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