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Search: Posts Made By: johngwheeler
Showing results 1 to 50 of 850
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Forum: Road Cycling
02-25-24, 06:35 AM
Replies: 5
Views: 249
Posted By johngwheeler

Adding some information that I've just found...

Adding some information that I've just found relating to the Merida Scultura Team edition - which shares geometry with the (much!) cheaper Scultura 6000:

From:...
Forum: Road Cycling
02-25-24, 06:16 AM
Replies: 5
Views: 249
Posted By johngwheeler

Thanks for the reply. As mentioned in my post, I...

Thanks for the reply. As mentioned in my post, I have about 5.5-6mm clearance at the closest point, which is between the rear tire and the chainstays. If the reports of the 32mm GP5000 width are...
Forum: Road Cycling
02-24-24, 05:28 PM
Replies: 5
Views: 249
Posted By johngwheeler

The tire shape is certainly a consideration in...

The tire shape is certainly a consideration in terms of support when cornering, or for aerodynamics. That said, I think 17mm rims are compatible with up to 50mm tires, even though anything > 28mm is...
Forum: Road Cycling
02-24-24, 06:28 AM
Replies: 5
Views: 249
Posted By johngwheeler

Will 32mm GP5000 tires fit on a Merida Scultura (2023)?

Sorry for yet another tire-clearance thread...but I haven't found the answer anywhere else.

I have a 2023 Merida Scultura (normal "race" model, not the Endurance version), which came with 17mm IW...
Forum: Bicycle Mechanics
02-14-24, 02:08 AM
Replies: 15
Views: 962
Posted By johngwheeler

Thanks Andy. Manufacturers seem to be one of two...

Thanks Andy. Manufacturers seem to be one of two camps with regard to spacers over the stem: either have a small (2-3mm) gap from the stop of the stem and the top of the steerer tube (with an...
Forum: Bicycle Mechanics
02-13-24, 11:14 AM
Replies: 15
Views: 962
Posted By johngwheeler

Just to add a bit of extra information, I found a...

Just to add a bit of extra information, I found a more detailed installation manual for the top-end Merida Scultura Team SL model. This has an integrated cockpit, but notably uses the same expander...
Forum: Bicycle Mechanics
02-13-24, 10:46 AM
Replies: 15
Views: 962
Posted By johngwheeler

Thanks for your reply, and for the advice not to...

Thanks for your reply, and for the advice not to assume what kind of expander plug is fitted in my individual bike. Looking at Merida's documentation, there list the same part number for the expander...
Forum: Bicycle Mechanics
02-13-24, 10:34 AM
Replies: 15
Views: 962
Posted By johngwheeler

Thanks. The instructions that I have seen on the...

Thanks. The instructions that I have seen on the Merida web site look pretty out of date and looks nothing like the FSA SMR stem fitted on my 2023 bike...
Forum: Bicycle Mechanics
02-13-24, 10:20 AM
Replies: 15
Views: 962
Posted By johngwheeler

Thanks for your reply - I totally agree with you...

Thanks for your reply - I totally agree with you that safety is paramount, hence my reason for posting this question in the first place! Perhaps my language wasn't clear enough when I described how...
Forum: Bicycle Mechanics
02-12-24, 04:03 PM
Replies: 15
Views: 962
Posted By johngwheeler

I think I mentioned that this concerns carbon...

I think I mentioned that this concerns carbon fiber steerer tubes, which applies on my Merida bike. The manufacturer warns against riding "long term" with "several spacers" above the stem, but does...
Forum: Bicycle Mechanics
02-12-24, 03:52 PM
Replies: 15
Views: 962
Posted By johngwheeler

Thanks - this sounds like the best approach, but...

Thanks - this sounds like the best approach, but I don't currently have a torque wrench (I'm travelling for several months, hence the interest in whether this is safe for a couple of months). I might...
Forum: Bicycle Mechanics
02-12-24, 03:50 PM
Replies: 15
Views: 962
Posted By johngwheeler

My concern (from reading various posts on this...

My concern (from reading various posts on this subject relating to carbon steerer tubes) is that if the steerer tube is not cut and the stem is moved to lower down on the steerer tube, it will...
Forum: Bicycle Mechanics
02-12-24, 01:01 PM
Replies: 15
Views: 962
Posted By johngwheeler

Is a spacer above an FSA SMR stem safe with a carbon steerer?

I asked my bike shop if I could try removing one of the 10mm headset spacers on my Merida Scultura, and they suggested putting a round spacer on top of the stem like this (at least temporarily):

...
Forum: Road Cycling
03-01-21, 04:09 PM
Replies: 6
Views: 643
Posted By johngwheeler

Thanks for the suggestions! This makes sense...

Thanks for the suggestions! This makes sense given the new shoes are a bit longer and the ball of my foot may well be further forward relative to the cleat. I'll try 4-5mm to see how I go.
Forum: Road Cycling
03-01-21, 12:09 AM
Replies: 6
Views: 643
Posted By johngwheeler

Sore knees after changing shoes....likely causes?

I recently bought some new Lake shoes and went for a 67km ride with them... possibly a bit too far for a first "test ride"!


I was fine during the ride, but noticed that my knees were quite sore...
Forum: General Cycling Discussion
02-28-21, 10:58 PM
Replies: 30
Views: 9,516
Posted By johngwheeler

A leg-length difference can also contribute to...

A leg-length difference can also contribute to it, I've been told. I have one leg about 5mm longer than the other (quite common), and it causes one foot to "pronate" to try to equalize the length...
Forum: Road Cycling
02-25-21, 03:56 PM
Replies: 9
Views: 3,017
Posted By johngwheeler

Thanks for confirming the situation with Lake MTB...

Thanks for confirming the situation with Lake MTB shoes. That's a pity! I wonder why this is?

If the Lake sizing chart is accurate (which I will test when I get my Lake road shoes), then I suppose...
Forum: Road Cycling
02-23-21, 09:54 PM
Replies: 9
Views: 3,017
Posted By johngwheeler

I bought my Lakes for these guys in Noosa, QLD:...

I bought my Lakes for these guys in Noosa, QLD: https://www.lecyclosportif.com.au/cycling/shoes/mens-mountain/

They list the Lake MX218 although it's not in stock at the moment.

The importers...
Forum: Road Cycling
02-23-21, 07:31 PM
Replies: 9
Views: 3,017
Posted By johngwheeler

Many thanks for the reply. According to Lake's...

Many thanks for the reply. According to Lake's sizing chart, the CX332 in size 44-Wide is 107.8mm wide. How do your feet feel if they are 114-115mm wide? Is the leather soft enough not to crush your...
Forum: Road Cycling
02-23-21, 03:29 PM
Replies: 9
Views: 3,017
Posted By johngwheeler

Thanks for the replies. I ordered some Lake...

Thanks for the replies. I ordered some Lake CX332s in 45-Wide and am looking forward to trying them out. These aren't the widest shoes that Lake makes (the cheaper "Sport" line is wider), and in a...
Forum: Road Cycling
02-22-21, 11:59 PM
Replies: 9
Views: 3,017
Posted By johngwheeler

Bont or Lake for bunion, and metatarsal spreader insole?

I've got a painful bunion on my right foot and am looking for a shoe to replace my current Northwave Extremes that cause me pain after about 1.5-2 hours riding.

My current research has led me to...
Forum: General Cycling Discussion
02-22-21, 10:59 PM
Replies: 30
Views: 9,516
Posted By johngwheeler

What do you mean the cut "is on the inside and...

What do you mean the cut "is on the inside and not even noticeable"? It sounds like you've cut a hole in the shoe to let the bunion protrude outside the shoe. I can't see how that wouldn't be...
Forum: General Cycling Discussion
02-22-21, 04:58 PM
Replies: 30
Views: 9,516
Posted By johngwheeler

Yes, I am considering it, but there are a number...

Yes, I am considering it, but there are a number of factors:

1) Surgery is expensive - no idea how much this would cost in Australia....but it's elective surgery and not covered by insurance.
2)...
Forum: General Cycling Discussion
02-22-21, 04:08 PM
Replies: 30
Views: 9,516
Posted By johngwheeler

Thanks for all the great answers and for sharing...

Thanks for all the great answers and for sharing your experiences! It looks like the complete recovery time is even longer than I imagined...

I don't think I'm ready for that kind of commitment,...
Forum: General Cycling Discussion
02-22-21, 01:50 AM
Replies: 30
Views: 9,516
Posted By johngwheeler

Following up on my earlier post, I've done some...

Following up on my earlier post, I've done some research into bunion surgery, and it does sound like quite a big deal, with up to a 3-6 month recovery period.

Given the fact that I am only really...
Forum: General Cycling Discussion
02-21-21, 11:07 PM
Replies: 30
Views: 9,516
Posted By johngwheeler

Has anyone had bunion surgery? How did it go?

I've had a significant bunion on my right foot for about 15 years, and it's become more painful when riding over the last couple of years. After about 1.5-2 hours, it's painful enough for me to need...
Forum: Bicycle Mechanics
01-08-21, 09:36 PM
Replies: 9
Views: 3,128
Posted By johngwheeler

Thanks for the suggestion to try replacing the...

Thanks for the suggestion to try replacing the pads first. I want to experiment with some wider tires (26-28mm true width), but if I can use these with the existing calipers then there may not be a...
Forum: Bicycle Mechanics
01-08-21, 09:23 PM
Replies: 9
Views: 3,128
Posted By johngwheeler

Thanks for confirming this. I've come from...

Thanks for confirming this. I've come from disc-brake only bikes so am having to learn about the different kinds of rim brakes - there are even more variants than disc systems :-)
Forum: Bicycle Mechanics
01-08-21, 09:21 PM
Replies: 9
Views: 3,128
Posted By johngwheeler

Thanks for the suggestion. I have Shimano Ultegra...

Thanks for the suggestion. I have Shimano Ultegra 6800 (11-speed) levers on the bike, which I understand are compatible with the BR-R8000 brake calipers.
Forum: Bicycle Mechanics
01-08-21, 01:01 AM
Replies: 9
Views: 3,128
Posted By johngwheeler

Can I replace Bianchi Reparto Corse rim brakes with Ultegra BR-R8000/BR-8010?

I recently bought a used Bianchi Impulso with Shimano Ultegra 6800 group set - except the brakes are the Bianchi in-house (FSA?) Reparto Corse units.

I am pretty unimpressed by the braking power...
Forum: Bicycle Mechanics
05-27-19, 07:33 PM
Replies: 13
Views: 16,065
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.
Forum: Bicycle Mechanics
05-27-19, 07:31 PM
Replies: 13
Views: 16,065
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...
Forum: Bicycle Mechanics
05-27-19, 03:33 PM
Replies: 13
Views: 16,065
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: 67
Views: 26,191
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: 2,570
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: 67
Views: 26,191
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: 67
Views: 26,191
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: 67
Views: 26,191
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: 2,274
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...
Forum: General Cycling Discussion
04-19-19, 01:39 AM
Replies: 50
Views: 7,876
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: 3,961
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: 3,961
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...
Forum: General Cycling Discussion
03-09-19, 12:02 AM
Replies: 17
Views: 8,809
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...
Forum: General Cycling Discussion
03-08-19, 11:57 PM
Replies: 17
Views: 8,809
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: 67
Views: 26,191
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: 5,859
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: 5,859
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: 67
Views: 26,191
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: 67
Views: 26,191
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: 67
Views: 26,191
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,...
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