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Search: Posts Made By: Redbullet
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Forum: Road Cycling
06-30-22, 03:29 PM
Replies: 29
Views: 640
Posted By Redbullet

Cycling in hot and humid environment

How to deal better with this?
I was cycling many times at 36 C temperature with just a little discomfort, when air humidity was normal. But cycling at only 31-33 C with high air humidity is a real...
Forum: Road Cycling
06-27-22, 03:42 PM
Replies: 28
Views: 783
Posted By Redbullet

You can search for Triban RC 500, if available....

You can search for Triban RC 500, if available. It has at least Shimano Sora shifters. Shimano makes a difference vs. Microshift. 2x9 speeds and disk brakes. I think it should be around 1000 $ as...
Forum: Road Cycling
06-27-22, 03:28 PM
Replies: 28
Views: 783
Posted By Redbullet

You're welcome. 2000 $ original price might be...

You're welcome.
2000 $ original price might be in carbon fiber area. I would buy second hand carbon fiber bike only from very close and honest friends / relatives, who can share with me the full...
Forum: Road Cycling
06-27-22, 03:02 PM
Replies: 28
Views: 783
Posted By Redbullet

I never understood the concept of "starter bike"....

I never understood the concept of "starter bike". It sounds as "temporary", before buying a "real" bike. If someone likes this sport and wants to practice it, he / she will want soon to replace the...
Forum: Road Cycling
06-08-22, 03:31 PM
Replies: 20
Views: 622
Posted By Redbullet

Tip: What if we also apply the gel on the bike?...

Tip: What if we also apply the gel on the bike? Especially on wheels - we'll start to fly, although UCI might not like it...
06-08-22, 03:12 PM
Replies: 41
Views: 1,350
Posted By Redbullet

I use Sram Force 22 on road bike. 38600 km at the...

I use Sram Force 22 on road bike. 38600 km at the 4th chain and I shall probably switch to a new 5th chain at 45000 km. It means more than 10000 km per chain. I use to remove, deeply clean with...
06-08-22, 02:22 PM
Replies: 11
Views: 341
Posted By Redbullet

Defective batch, maybe? I used only GP 4000 for...

Defective batch, maybe?
I used only GP 4000 for years (except for a few months unsuccessful attempt with Vittoria tubeless) and I found them very reliable and long lasting. Right now, for example, I...
05-28-22, 12:58 PM
Replies: 19
Views: 342
Posted By Redbullet

Really??? What about Thor? :)

Really???
What about Thor?
:)
05-28-22, 12:49 PM
Replies: 19
Views: 342
Posted By Redbullet

Thanks! The BB is SRAM GXP press fit, for road...

Thanks!
The BB is SRAM GXP press fit, for road bike. I have just learned that I don't need special tools to remove the crank set on this, so I did it and I took a look inside. It looks like the...
05-28-22, 12:17 PM
Replies: 19
Views: 342
Posted By Redbullet

I posted 2 threads regarding stem digging in...

I posted 2 threads regarding stem digging in carbon steerer and about a round shape on the steerer, done by the compression ring. Each shape resulted in aprox. 0.1-0.15mm reduction in steerer...
05-27-22, 04:02 PM
Replies: 19
Views: 342
Posted By Redbullet

I have no tools and no experience to check the...

I have no tools and no experience to check the crankset. I thought it lasts for lifetime... The bike was bought as new years ago.
Testing another wheel is an alternative, I'll try to find one.
05-27-22, 03:12 PM
Replies: 19
Views: 342
Posted By Redbullet

Definitely not. It appears only (and always)...

Definitely not. It appears only (and always) while standing up and sprinting. For the wheels it means higher load on front plus lateral load, due to leaning left-right.
05-27-22, 02:44 PM
Replies: 19
Views: 342
Posted By Redbullet

"Hammer-like" noises while sprinting

After a deep overhaul of headset and fork (carbon), the bike feels more rigid and the headset keeps tight, even at 4Nm stem torque. Bearings were changed (although not sure the old ones were worn...
05-18-22, 01:18 PM
Replies: 7
Views: 346
Posted By Redbullet

Totally agree. They probably saved 10-20 EUR in...

Totally agree. They probably saved 10-20 EUR in production costs and 10-20 g in bike weight. But in time, the cost for the user is way, way bigger...
05-18-22, 12:52 PM
Replies: 7
Views: 346
Posted By Redbullet

I have just learned the pattern: While riding...

I have just learned the pattern:
While riding loose headset, bearing cases “hammer” the headset tapered faces and slowly destroy them. Furthermore, the compression ring performs very small moves...
05-12-22, 02:29 PM
Replies: 7
Views: 346
Posted By Redbullet

Thanks for the detailed explanation. All the...

Thanks for the detailed explanation.
All the best
05-12-22, 01:37 PM
Replies: 7
Views: 346
Posted By Redbullet

Headset questions – road bike, carbon

Questions below might look stupid, but I can’t find mechanics in my area to deal with such topics related to a carbon road bike.

1. How do you call the cups that are pressed inside a head tube and...
05-08-22, 02:08 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Thanks very much for the explanations, I really...

Thanks very much for the explanations, I really understood all and help a lot.
I decided not to replace the fork. Not only that it is expensive, but I think the old one is not yet critically...
05-07-22, 04:26 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Wow! Thanks, although it seems to complicate a...

Wow! Thanks, although it seems to complicate a little. It looks like the that collar was not properly mounted. I think the collar is not pressed down directly by the spacers, but by the top of the...
05-07-22, 01:09 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Sorry for insisting, it looks that I just start...

Sorry for insisting, it looks that I just start to learn some things about the forks and headsets :).
The part in the photo below is the one that grove in the fork at that level - I understand it is...
05-07-22, 05:40 AM
Replies: 5
Views: 261
Posted By Redbullet

Thanks. Old "Columbus" and Enve sound Ok. I'll...

Thanks.
Old "Columbus" and Enve sound Ok. I'll do my homework, to decide whether and how I change it.
With regards to the reasons of the issues (especially the mark at the contact with the headset)...
05-07-22, 05:28 AM
Replies: 52
Views: 1,286
Posted By Redbullet

Thanks. I am balancing between a new fork...

Thanks.

I am balancing between a new fork and preserving the actual… But what about the mark at the contact with headset? Wall thickness here was reduced with 0.1-0.15mm.
If this does not mean...
05-06-22, 03:23 PM
Replies: 9
Views: 1,079
Posted By Redbullet

They do have, in my opinion, other very...

They do have, in my opinion, other very interesting features as well: you can populate your peloton with bots which you can tailor as you want around your desired w/kg. You draft them, they draft you...
05-06-22, 01:33 PM
Replies: 5
Views: 261
Posted By Redbullet

Light carbon fork replacement (Road)

Hello,

I recently had a post regarding the stem digging around 0.1mm in the carbon steerer of a road bike. Recently I also found a circular mark at steerer contact with the upper part of the...
05-03-22, 11:17 AM
Replies: 52
Views: 1,286
Posted By Redbullet

Thanks. Lower marks are deeper: the difference...

Thanks.
Lower marks are deeper: the difference of 0.1-0.13 mm in diameter exists only at the level of the red point, generated during previous period of using 35mm of spacers, 3-4 years / 25000 km....
Forum: Road Cycling
05-02-22, 03:16 PM
Replies: 19
Views: 887
Posted By Redbullet

I use an older version of this, with aluminum...

I use an older version of this, with aluminum fork, on a smart trainer and a few times as a replacement of main bike for a few real rides. A durable bike, all good for the price, except for...
05-02-22, 02:30 PM
Replies: 52
Views: 1,286
Posted By Redbullet

No, I said I had 35mm and got this issue within...

No, I said I had 35mm and got this issue within around 3 years - some 25000+ km. Then I reduced to 30mm and I got some new scratches within around 1 year - some 5000-10000 km, but it looks to me that...
05-02-22, 02:10 PM
Replies: 52
Views: 1,286
Posted By Redbullet

No, the stem edges are not quite sharp, it is...

No, the stem edges are not quite sharp, it is brand stem - Ritchey. I am sure that the reason of the issue is the high flex of the steerer forward, during stand-up pedaling and strong brake on...
05-02-22, 01:12 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Ok, I disassembled for pictures. - 3 pictures...

Ok, I disassembled for pictures.
- 3 pictures (taken from right, front and left).
The arrow above shows the mark of stem bottom edge when I had 35mm spacers. The arrow below shows the new scratch...
05-01-22, 12:52 PM
Replies: 52
Views: 1,286
Posted By Redbullet

No, that one is missing in my case. I only have...

No, that one is missing in my case. I only have the shape of the stem sculpted, only at the bottom edge of the stem and only in front of the steerer. One shape of 0.1mm depth made during the period...
05-01-22, 03:29 AM
Replies: 52
Views: 1,286
Posted By Redbullet

I should disassemble the system I am not sure...

I should disassemble the system I am not sure that I can take such a quality picture to show a dent of 0.1 mm, but "rm-rf" posted a link above with the general issue. My issue is very similar with...
04-30-22, 03:50 PM
Replies: 52
Views: 1,286
Posted By Redbullet

If that tool correctly calculates, considering...

If that tool correctly calculates, considering available angles of stems similar to mine, it would mean increasing angle from 6 to 17 degrees in order to decrease spacers height from 30 to 15 mm. I...
04-30-22, 02:23 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Thanks. No. My steerer is under built. It is...

Thanks.

No. My steerer is under built. It is a 6.5kg bike L size, with some weight savings coming from very light frame and fork. The expander is thick and correctly installed and the torque was...
04-30-22, 02:02 PM
Replies: 52
Views: 1,286
Posted By Redbullet

I think the reason is that I have too big height...

I think the reason is that I have too big height of spacers (35 and then 30mm - not recommended for CF) and this allows steerer to bent too much, which leads to high concentration of forces.
The...
04-30-22, 01:37 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Mine has a special spacer above and the steerer...

Mine has a special spacer above and the steerer extends around 2mm above the stem.

I was thinking about a workaround for my issue, although a little expensive and not very elegant (see the sketch...
04-29-22, 03:10 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Thanks everybody for the answers. Under normal...

Thanks everybody for the answers.
Under normal variable pressure over the handlebar (see the sketch below), the elastic steerer will successively bent (imperceptibly) forward and recover, generating...
04-28-22, 03:30 PM
Replies: 52
Views: 1,286
Posted By Redbullet

Stem digging in the steering tube

Hello,

Grateful if somebody has a solution for the issue below (sorry for the bad quality sketch… :))

It is about a road bike with steering tube diameter of 28.5 mm, carbon fiber.
Because of...
04-24-22, 03:31 PM
Replies: 5
Views: 295
Posted By Redbullet

Sorry, I should have mentioned from the start: it...

Sorry, I should have mentioned from the start: it is a road bike. It is a relatively cheap road bike, used on a trainer.

Thanks
04-24-22, 02:52 PM
Replies: 5
Views: 295
Posted By Redbullet

Thanks very much for the answer. I had some...

Thanks very much for the answer.
I had some difficulties in finding all 9 speeds elements, but I managed to find some parts for 10 speeds - Shimano Tiagra: 10 speeds right shifter plus 10v cassette...
04-23-22, 03:22 PM
Replies: 5
Views: 295
Posted By Redbullet

Microshift 8s vs Shimano ST R3030 9v

Grateful if somebody can advise:

I run a Microshift 3x8 on a bike for trainer. The right shifter (8v) looks damaged, as it shifts down 2-3 cogs instead of 1 while shifting. I am wondering whether...
Forum: Road Cycling
04-23-22, 02:34 PM
Replies: 15
Views: 574
Posted By Redbullet

I would seriously address that. Not sure that...

I would seriously address that. Not sure that hand tissues and nerves can be trained to cope with large extra pressure for a long time.

A numbers of years ago, soon after I restarted cycling, I...
Forum: Road Cycling
04-21-22, 03:33 PM
Replies: 93
Views: 4,654
Posted By Redbullet

The main advantage of tubeless over the tubed is...

The main advantage of tubeless over the tubed is sealing the punctures "on the run". The main disadvantages are difficult maintenance and rim compatibility. But if you ride 23mm (probably also 25mm)...
02-01-22, 04:17 PM
Replies: 15
Views: 1,072
Posted By Redbullet

I use a cheap, aluminum road bike (around 400...

I use a cheap, aluminum road bike (around 400 EUR) for the smart trainer and it works perfect. It is a 3x8 speeds (instead of 2x11 on primary carbon bike) and has "second tier brand" components -...
12-23-21, 12:50 PM
Replies: 10
Views: 778
Posted By Redbullet

Yes, sure, there is at least one cycling...

Yes, sure, there is at least one cycling application where you can upload your GPX files from your Strava rides or from other sources (with some modifications in order to smooth the rough GPS file;...
12-23-21, 12:37 PM
Replies: 33
Views: 2,560
Posted By Redbullet

I am from EU and I assumed that my very poor...

I am from EU and I assumed that my very poor experience with Zwift (lack of real draft effect and the feeling that I was sometimes riding offline, although still surrounded by a moving peloton) was...
12-20-21, 01:11 PM
Replies: 33
Views: 2,560
Posted By Redbullet

I think they use some "tricks" to face high...

I think they use some "tricks" to face high workloads on servers, and sometimes this generates unexpected behavior. I remember 3 times I wanted to get rid of a few riders who were drafting me. So,...
12-09-21, 03:35 PM
Replies: 27
Views: 838
Posted By Redbullet

I thought the topic is simpler and closer to...

I thought the topic is simpler and closer to "pure arithmetic":
Calculate N1=Nr teeth largest ring + Nr teeth large cog - nr. teeth smallest ring - nr teeth smallest cog.
Compare N1 with N2 (N2 =...
12-07-21, 02:33 PM
Replies: 33
Views: 2,560
Posted By Redbullet

An older experience: I zwifted two group rides,...

An older experience: I zwifted two group rides, around 160-200 riders. Poor drafting - most of the time I needed 20-30% more w/kg (74 kg weight) than the other riders to stay in the middle of a pack....
Forum: Road Cycling
10-26-21, 11:57 AM
Replies: 52
Views: 2,111
Posted By Redbullet

Just trying to assess the risks and prevention,...

Just trying to assess the risks and prevention, based on others' experiences, if I replace the tire well before reaching worn indicators or other visible signs. A road bike tire often holds more than...
Forum: Road Cycling
10-22-21, 01:25 PM
Replies: 52
Views: 2,111
Posted By Redbullet

So, it looks it can occur primarily due to...

So, it looks it can occur primarily due to equipment mismatch or overheating from rim brakes. It sounds somehow encouraging, since both reasons can be avoided.
But what about tubes? Can they...
Showing results 1 to 50 of 458
 


 
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