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Search: Posts Made By: johngwheeler
Showing results 1 to 50 of 820
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05-27-19, 07:33 PM
Replies: 11
Views: 1,769
Posted By johngwheeler

Thanks :-) I fear the postage costs would exceed...

Thanks :-) I fear the postage costs would exceed the cost of the screw several-fold.
05-27-19, 07:31 PM
Replies: 11
Views: 1,769
Posted By johngwheeler

Thanks for the replies. Rather maddeningly, none...

Thanks for the replies. Rather maddeningly, none of the Shimano tech docs / exploded diagrams give the actual size. On some older groupsets, I've read that the rear limit screws were M4 and the front...
05-27-19, 03:33 PM
Replies: 11
Views: 1,769
Posted By johngwheeler

Lost my limit screw! Shimano R8000 front mech - where to find?

I was adjusting one of the limit screw on my front derailleur (Ultegra R8000), and obviously slackened it too much, because it has fallen out.

Does anyone know:

a) Whether I can buy these as...
Forum: Road Cycling
05-26-19, 11:07 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

My 28mm Schwalbe Pro-Ones on the stock Giant 17mm...

My 28mm Schwalbe Pro-Ones on the stock Giant 17mm (internal) rims were also about 26.5mm tall, so it's interesting to note that you measured the same on the much wider (21mm internal) HED Belgium+....
Forum: Commuting
05-21-19, 01:42 AM
Replies: 24
Views: 1,670
Posted By johngwheeler

A similar thing happened to a work colleague of...

A similar thing happened to a work colleague of mine a few years ago. The driver "explosively" opened the door (with a kick) leaving much less time for reaction than the usual opening speed, where...
Forum: Road Cycling
05-19-19, 10:30 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

Thanks for the measurements. I'll need to measure...

Thanks for the measurements. I'll need to measure my tire height when I get home. The HED Belgium+ has a 21mm internal / 25mm external width, right? So there is about 2.5mm of tire extending outside...
Forum: Road Cycling
05-19-19, 09:52 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

That's pretty wide! What is the tire height above...

That's pretty wide! What is the tire height above the rim? Which rims are you using?
Forum: Road Cycling
05-19-19, 02:03 AM
Replies: 56
Views: 7,102
Posted By johngwheeler

On the stock Giant PR2 rims with 17mm internal...

On the stock Giant PR2 rims with 17mm internal width, the 28mm Schwalbe Pro Ones inflate to almost exactly 30mm (maybe 0.1-.0.2mm under). I suspect they would be a fair bit fatter on your HED rims,...
Forum: Road Cycling
05-19-19, 01:49 AM
Replies: 3
Views: 438
Posted By johngwheeler

How much tire *height* difference on wider rims?

I'm running 28mm Schwalbe Pro Ones on my 2018 Giant TCR with the stock PR2 wheels, which have 17mm internal rim width.

I really like the Schwalbe tires (tubeless) which feel both fast and...
04-19-19, 01:39 AM
Replies: 50
Views: 3,980
Posted By johngwheeler

Some good advice given so far, but the OP hasn't...

Some good advice given so far, but the OP hasn't mentioned what gear they need to carry. Given they have the budget for high-end bikes, I'm guessing that they'll be staying at hotels and not camping,...
Forum: Road Cycling
04-19-19, 12:59 AM
Replies: 29
Views: 1,604
Posted By johngwheeler

Now that I think about it, you're both right. ...

Now that I think about it, you're both right.

When riding my (drop bar) bike using method (2) it feels like I'm just putting my weight directly downward on the (inside) bar - but in reality, I...
Forum: Road Cycling
04-14-19, 12:47 AM
Replies: 29
Views: 1,604
Posted By johngwheeler

Definition of counter-steering?

I’ve seen two definitions for “counter-steering” as it applies to riding bicycles.

1) Initiating a turn by turning the wheel in the opposite direction to the direction of turn, either as a means...
03-09-19, 12:02 AM
Replies: 17
Views: 4,275
Posted By johngwheeler

Just to clarify, I think they mean a measured...

Just to clarify, I think they mean a measured 32mm, rather than a nominal 32mm tire. Also consider the height of the tire. My 28mm Conti GP4K measure 32mm wide and 30mm tall - sometimes it's the fork...
03-08-19, 11:57 PM
Replies: 17
Views: 4,275
Posted By johngwheeler

My 2017 Roubaix will comfortably fit "true" 32mm...

My 2017 Roubaix will comfortably fit "true" 32mm tires. My 28mm Conti GP4Ks inflate to just under 32mm on the stock DT Swiss rims (19mm internal). i think there's at least 4-5mm at the narrowest...
Forum: Road Cycling
03-08-19, 11:51 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

The problems seems to have sorted itself out, and...

The problems seems to have sorted itself out, and I'm now only losing about 5psi per 24 hour period including my 30km commute. This is acceptable to me.

Maybe I went over a big bump and lost air...
Forum: Road Cycling
03-05-19, 07:02 PM
Replies: 37
Views: 2,505
Posted By johngwheeler

Good to hear that bike manufacturers on getting...

Good to hear that bike manufacturers on getting on board with the trend to wider tires, by allowing sufficient frame clearances. Hopefully the days of "will it fit?" anxiety will be a thing of the...
Forum: Road Cycling
03-03-19, 11:57 PM
Replies: 37
Views: 2,505
Posted By johngwheeler

I've read good review of the Hutchison Fusion 5...

I've read good review of the Hutchison Fusion 5 tubeless - I think they are available in 28mm (TBC). I am using the Schwalbe Pro Ones in 28mm.

I would check and double-check the likely inflated...
Forum: Road Cycling
03-03-19, 06:26 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

Thanks for the comments! Having ridden on...

Thanks for the comments!

Having ridden on the tubeless tires for the last week, I think I may have a problem with seating or the sealant - I seem to be losing more significant pressure than I...
Forum: Road Cycling
02-28-19, 08:10 PM
Replies: 56
Views: 7,102
Posted By johngwheeler

I'm using the standard Giant sealant, but I'm...

I'm using the standard Giant sealant, but I'm sure there are better ones. The pressure loss was about 10psi after leaving the bike in my garage for 5-6 days, and bout 3-4psi after a 30km ride -...
Forum: Road Cycling
02-28-19, 06:34 AM
Replies: 56
Views: 7,102
Posted By johngwheeler

28mm Schwalbe Pro One Tubeless on my Giant TCR - nice!

I’ve just fitted some tubeless 28mm Schwalbe Pro One tires to my 2018 Giant TCR (Advanced 1), and I’m very pleased with the results.

I was a bit concerned that the tires wouldn’t fit the frame,...
Forum: Road Cycling
09-16-18, 10:39 PM
Replies: 17
Views: 1,402
Posted By johngwheeler

The grip on the hoods in the linked page looks...

The grip on the hoods in the linked page looks very odd, especially with the curve of the drop bars sandwiched between the ring and little fingers. The image also shows the web of the hand a long way...
Forum: Road Cycling
09-09-18, 08:16 PM
Replies: 17
Views: 1,402
Posted By johngwheeler

Well spotted. The seller mentioned that the...

Well spotted. The seller mentioned that the levers came from the factory build rotated downwards more than usual. I have rotated the bars up a bit (but not the levers, which would require taking off...
Forum: Road Cycling
09-09-18, 08:11 PM
Replies: 17
Views: 1,402
Posted By johngwheeler

I didn't notice this when I went for a 10-15...

I didn't notice this when I went for a 10-15 minute test ride, probably because I was cycling gently and concentrating on other things. It's not a huge deal; just something that I began to notice on...
Forum: Road Cycling
09-02-18, 09:57 PM
Replies: 17
Views: 1,402
Posted By johngwheeler

Thanks for the suggestion. It doesn’t feel that...

Thanks for the suggestion. It doesn’t feel that I’m gripping very tightly, but maybe I am (it’s a new race bike that has steering that’s much more sensitive than I’m used to).

I guess I have 5...
Forum: Road Cycling
09-02-18, 08:03 PM
Replies: 17
Views: 1,402
Posted By johngwheeler

Shimano RS505 brake hoods - where do you put your thumbs?

I've just bought a bike with Shimano RS505 hydro brakes. These are often derided for their appearance, but they do a good job of braking.

However, I have found one problem - an uncomfortable...
Forum: Road Cycling
08-31-18, 01:04 AM
Replies: 40
Views: 2,353
Posted By johngwheeler

I have had bikes that are slightly too small and...

I have had bikes that are slightly too small and slightly too large, and would add the following:

1) The sensation on the bike that was too large (Fuji Gran Fondo large frame - I am 5'9.5", with...
Forum: Road Cycling
08-26-18, 04:05 PM
Replies: 33
Views: 1,194
Posted By johngwheeler

To expand on my original question, I’m interested...

To expand on my original question, I’m interested in comparing these 2 bikes:

2017 Specialzied Roubaix Expert (size 56)
2018 Giant TCR Advanced 1 Disc (size M)

Both bikes have disc brakes and...
Forum: Road Cycling
08-26-18, 02:54 PM
Replies: 20
Views: 5,267
Posted By johngwheeler

Thanks for your replies. I’m now looking at a...

Thanks for your replies. I’m now looking at a 2018 Giant TCR withe the RS505 brakes, which is also considerbly cheaper than the new model. It does seem to be a step backwards for Giant. Who wants to...
Forum: Road Cycling
08-26-18, 06:34 AM
Replies: 33
Views: 1,194
Posted By johngwheeler

Does geometry affect ride feel more than weight?

Here's a question for those of you who have ridden a variety of different road bikes:

Given two bikes of the same weight, would a bike with a "race geometry" (low headtube, longer top-tube, short...
Forum: Road Cycling
08-26-18, 06:04 AM
Replies: 3
Views: 426
Posted By johngwheeler

How many of you buy & sell bikes often just to try something new?

Like many of you, I like to experiment and learn how different bikes ride. The problem is that it's pretty hard to do this unless you have a pool a friends who are happy to lend you their bikes, or...
Forum: Road Cycling
08-26-18, 05:50 AM
Replies: 20
Views: 5,267
Posted By johngwheeler

Good photo that exactly shows a potential...

Good photo that exactly shows a potential "problem" of non-standard complexity.
Forum: Road Cycling
08-26-18, 02:20 AM
Replies: 20
Views: 5,267
Posted By johngwheeler

That's interesting to know. I don't normally...

That's interesting to know. I don't normally change more than 2 gears in one go, so I'll probably be OK with this limitation.

I've not ridden a bike with the 505 brifter, and I know some people...
Forum: Road Cycling
08-26-18, 12:34 AM
Replies: 20
Views: 5,267
Posted By johngwheeler

New Giant TCR Disc: Giant Conduct hybrid-hydros vs Shimano RS505?

Hi,

I’m looking at the Giant TCR Avanced 1 Disc, and see that the new 2019 model has Giant’s own “Conduct” hybrid (cable+hydro) brake system, which replaces last year’s Shimano RS505.

Is this a...
Forum: Road Cycling
08-21-18, 06:32 PM
Replies: 36
Views: 1,964
Posted By johngwheeler

That's a nice looking wallet, and shows that you...

That's a nice looking wallet, and shows that you can carry everything in your pocket. The only problem is where you would keep a rain-jacket or gillet; the side pockets are a bit too small in my...
Forum: Road Cycling
08-21-18, 06:29 PM
Replies: 36
Views: 1,964
Posted By johngwheeler

No, I don't hit the Topeak top-tube bag with my...

No, I don't hit the Topeak top-tube bag with my knees, but I did need to add extra velcro to ensure the straps didn't hang out to the side (where i would brush against them, which was irritating). I...
08-16-18, 07:43 PM
Replies: 6
Views: 2,480
Posted By johngwheeler

Thanks. It's just a single bolt saddle clamp....

Thanks. It's just a single bolt saddle clamp. Apologies for the out-of-foucs photo, but it givces an idea.

I found a 5mm hex key will only enter about 1mm, and a 4mm is too small. A Torx T30 seems...
08-16-18, 03:09 PM
Replies: 2
Views: 512
Posted By johngwheeler

Thanks. Ths T30 fits quite well, which is why I’m...

Thanks. Ths T30 fits quite well, which is why I’m wondering whether it *is* actually a T30 bolt originally. It just seems an odd choice if it is true. Normally they are 5mm bolts, right?
08-16-18, 01:57 AM
Replies: 2
Views: 512
Posted By johngwheeler

Giant TCX saddle clamp bolt size?

Hi,

I have a Giant TCX Advanced Pro 2 with a carbon D-fuse seat post. I need to adjust my saddle after it shifted going over a bump, but found that none of my Hex wrenches fit the saddle clamp...
08-16-18, 01:55 AM
Replies: 6
Views: 2,480
Posted By johngwheeler

What bolt size for Giant D-fuse saddle clamp?

Hi,

I have a Giant TCX Advanced Pro 2 with a carbon D-fuse seat post. I need to adjust my saddle after it shifted going over a bump, but found that none of my Hex wrenches fit the saddle clamp...
Forum: Road Cycling
08-15-18, 04:52 AM
Replies: 37
Views: 2,669
Posted By johngwheeler

What disc brake system did you have? I've been...

What disc brake system did you have? I've been using Shimano RS805 and they've been excellent - I've never had any rubbing or maintenance on them - not even centering the calipers. I also have some...
Forum: Road Cycling
08-15-18, 01:54 AM
Replies: 36
Views: 1,964
Posted By johngwheeler

You carry speakers in your pockets!!? for music?...

You carry speakers in your pockets!!? for music? Political broadcasts?

How about bone-conducting headphones? Would be a hell of a lot lighter!
08-14-18, 11:06 PM
Replies: 5
Views: 540
Posted By johngwheeler

There are plenty of "disk brake break-in" videos...

There are plenty of "disk brake break-in" videos on the net, but basically you need something similar to:

1) accelerate to about 20km/h on a slight descent and apply the brakes firmly (not...
Forum: Road Cycling
08-14-18, 04:24 PM
Replies: 531
Views: 12,499
Posted By johngwheeler

Oh dear! Looks like my OP has gone off the rails...

Oh dear! Looks like my OP has gone off the rails :deadhorse:

My conclusion from the above & various links, is that there are lots of things I can do to my current bike (Spec Roubaix) to go faster....
Forum: Road Cycling
08-13-18, 05:59 AM
Replies: 49
Views: 1,349
Posted By johngwheeler

Are they SPD (mountain bike pedals with recessed...

Are they SPD (mountain bike pedals with recessed cleats on the shoes) or SPD-SL (road bike system)? Typically, the SPDs are somewhat easier, and have the advantage that many pedals are double-sided...
Forum: Commuting
08-13-18, 05:42 AM
Replies: 35
Views: 1,188
Posted By johngwheeler

Some good advice already given, but my top tip is...

Some good advice already given, but my top tip is to be as visible as possible if sharing the road with traffic. Bright coloured clothing or reflectives, and daytime running lights.

I would...
Forum: Commuting
08-13-18, 05:30 AM
Replies: 68
Views: 3,068
Posted By johngwheeler

I think I would be a bit disconcerted by a...

I think I would be a bit disconcerted by a wheelsucker partially because it forces me to take their presence into account in order to ride safely, but mostly because because it is somewhat an...
Forum: Road Cycling
08-13-18, 02:47 AM
Replies: 46
Views: 1,552
Posted By johngwheeler

Probably good advice :-) It just seems a shame...

Probably good advice :-) It just seems a shame to spend a lot on a CF bike, and then load it with excessive weight.

Ultimately, we need what we need for our given circumstances, and it's just a...
Forum: Road Cycling
08-13-18, 02:41 AM
Replies: 46
Views: 1,552
Posted By johngwheeler

That's light! What is your bike? Curious as...

That's light! What is your bike?

Curious as to why you have links for both 10sp and 11sp - for the spare chain? :-)

And, I don't expect to be doing any sewing on my ride....but I guess you...
Forum: Road Cycling
08-13-18, 02:25 AM
Replies: 531
Views: 12,499
Posted By johngwheeler

What bikes do you have so we can relate to your...

What bikes do you have so we can relate to your comparison?
Forum: Road Cycling
08-12-18, 10:45 PM
Replies: 531
Views: 12,499
Posted By johngwheeler

Some interesting comments here that ring true. I...

Some interesting comments here that ring true. I don't race, but am curious about the likely effect an aero bike. Given my current performance (51 yrs old and cycling for < 2 years), an aero-bike is...
Showing results 1 to 50 of 820
 


 
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