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Search: Posts Made By: Redbullet
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Forum: Road Cycling
08-10-22, 03:46 PM
Replies: 36
Views: 1,067
Posted By Redbullet

Thanks again for answers. The topic was not about...

Thanks again for answers. The topic was not about a bullet proof way of action (nobody can give it, not to speak about differences between the states / countries), but about opinions on how could...
Forum: Road Cycling
08-10-22, 03:35 PM
Replies: 36
Views: 1,067
Posted By Redbullet

[QUOTE=GGDaddy;22604849]And I love your implicit...

[QUOTE=GGDaddy;22604849]And I love your implicit assumption that OP managed to get their bike trashed but miraculously escaped injury in the collision/QUOTE]

I didn't escape injury, but not being...
Forum: Road Cycling
08-08-22, 03:26 PM
Replies: 36
Views: 1,067
Posted By Redbullet

They state "fair market value", but they don't...

They state "fair market value", but they don't define it. You can reasonably assess safety of a second hand car from a reputable shop and you are also obliged to certify its secure use with official...
Forum: Road Cycling
08-08-22, 03:12 PM
Replies: 36
Views: 1,067
Posted By Redbullet

Sad... With such measure we should all be at...

Sad... With such measure we should all be at least arrested at home, if not in jail, since we can't prove that we never killed a person... :)
Forum: Road Cycling
08-08-22, 02:28 PM
Replies: 36
Views: 1,067
Posted By Redbullet

Just to highlight the challenge: what would be...

Just to highlight the challenge: what would be the market value in this case? "Second hand" price can solve it for cars. But a second hand similar bike can not be the solution here, because it is...
Forum: Road Cycling
08-08-22, 02:10 PM
Replies: 36
Views: 1,067
Posted By Redbullet

Thanks for the answers, I really appreciate. It...

Thanks for the answers, I really appreciate. It looks that almost everybody assesses that safety assurance (for frame and fork) can not be obtained. I assume that a bike repair shop will issue a...
Forum: Road Cycling
08-07-22, 03:35 PM
Replies: 36
Views: 1,067
Posted By Redbullet

That is my challenge that I have to solve...

That is my challenge that I have to solve somehow, in the circumstances that it was not my fault. Having wheels and some other parts replaced as new should be accompanied by assurance that I can ride...
Forum: Road Cycling
08-07-22, 02:24 PM
Replies: 36
Views: 1,067
Posted By Redbullet

If you are talking about ultrasound or related...

If you are talking about ultrasound or related technologies, then: no, there are not such repair shops in my area. I need to assess whether it would be possible or not to get a repair with safety...
Forum: Road Cycling
08-07-22, 02:05 PM
Replies: 36
Views: 1,067
Posted By Redbullet

Assessing carbon integrity after crash

It would help me to hear opinions from some more experienced people in this topic: can a bike repair shop securely assess whether a carbon frame and fork are safe or not to be used after a crash? The...
Forum: Road Cycling
06-30-22, 03:29 PM
Replies: 30
Views: 1,032
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: 32
Views: 1,233
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: 32
Views: 1,233
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: 32
Views: 1,233
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: 678
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: 1,538
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: 396
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: 355
Posted By Redbullet

Really??? What about Thor? :)

Really???
What about Thor?
:)
05-28-22, 12:49 PM
Replies: 19
Views: 355
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: 355
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: 355
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: 355
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: 355
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: 365
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: 365
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: 365
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: 365
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: 1,491
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: 1,491
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: 1,491
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: 286
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: 1,491
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: 1,254
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: 286
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: 1,491
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: 1,333
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 1,491
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: 308
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: 308
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: 308
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: 621
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...
Showing results 1 to 50 of 464
 


 
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