Search found 4891 matches

by andrew_s
21 Oct 2019, 7:48pm
Forum: Touring & Expedition
Topic: Camping touring vs B&B touring - how much extra weight?
Replies: 21
Views: 517

Re: Camping touring vs B&B touring - how much extra weight?

Jamesh wrote:How about keeping same panniers etc.
But putting tent outer, inner and sleeping bag in a dry sack on the handlebars?

Tent and sleeping bag in the same dry sack is a bad idea.
The tent will often be wet when you pack it away.
by andrew_s
21 Oct 2019, 12:42am
Forum: Bikes & Bits – Technical section
Topic: Would you ride on this fork?
Replies: 7
Views: 429

Re: Would you ride on this fork?

1. I would suppose that the mudguard was touching or almost touching, the fork at the site of the damage. Mud (aka grinding paste) will have accumulated in the gap, and the continual small vibrations and larger movements will have been rubbing away at the fork. I'd both add a strip of copter tape th...
by andrew_s
20 Oct 2019, 11:43pm
Forum: Touring & Expedition
Topic: Camping touring vs B&B touring - how much extra weight?
Replies: 21
Views: 517

Re: Camping touring vs B&B touring - how much extra weight?

Weight will obviously depend in good part on how much you want in the way of camp comforts, and how much you are willing to spend. I'd guess about 8 kg extra over B&B/Hotel touring. Tent - about 2 kgs, give or take - maybe down to 1.5 if you are OK with a 1-person tent that's got space to sleep ...
by andrew_s
18 Oct 2019, 12:51am
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

Mick F wrote:I repeat.
Mick F wrote:Does a small wheel rotate more per unit distance travelled than a big wheel?
Yes.
It's rotating at a higher RPM then.

Of course, but the higher RPM of a small wheel doesn't affect how fast the rim is going through the brake blocks, which is what you seem to be claiming.
by andrew_s
18 Oct 2019, 12:40am
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

riding fixed would provide a solution. a touch of gentle back pressure every now and again would slow the bike easily down the tourmalet :wink: I tried leg braking only going down a 1 in 6 one time. It didn't work, and got quite frightening. Fortunately the bottom of the hill arrived before things ...
by andrew_s
17 Oct 2019, 7:35pm
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

Energy go up at the square of the speed. So if it's so silly steep and twisty so I don't dare to let my bent trike go then I try and keep it to around 10 mph. .5mv^2 has nothing to do with it. You still put more total heat in to the rim & brake when dragging the brake to go slowly. Going slowly...
by andrew_s
17 Oct 2019, 7:16pm
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

The speed of rotation is much higher. Because the road speed is the same, that makes no difference to the rate at which the brakes put heat in to the rim. Agree. I'm saying it's going faster past the blocks. It's not going faster past the blocks. The rim moves past the brake block at the your ridin...
by andrew_s
17 Oct 2019, 2:58pm
Forum: Bikes & Bits – Technical section
Topic: Diagnosing a fault with a dynamo powered rear light
Replies: 6
Views: 290

Re: Diagnosing a fault with a dynamo powered rear light

Well I've had this system working for almost two years (I commute on the bike and use it to get around town so it's out pretty much every day in all weathers year round), sounds like I just got lucky! I'd hazard a guess that the stud was originally well protected - paint, or a rubber grommet stoppi...
by andrew_s
17 Oct 2019, 2:50pm
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

The speed of rotation is much higher. Because the road speed is the same, that makes no difference to the rate at which the brakes put heat in to the rim. Where the wheel size may make a difference is that any given bit of rim gets heated more frequently, and has less time to cool between times. If...
by andrew_s
17 Oct 2019, 2:18pm
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

Re descending and braking techniques, on a 'typical' French mountain there's not much that one can do different: That's why I suggested the parachute. Slightly tongue in cheek, but the blurb did suggest 50 pounds of drag for a runner, which would definitely make it useful if it's not too much of a ...
by andrew_s
17 Oct 2019, 11:49am
Forum: Bikes & Bits – Technical section
Topic: Small wheel blowouts - options?
Replies: 96
Views: 2089

Re: Small wheel blowouts - options?

(Schoolboy physics) The gravitational potential energy to be dissipated during a descent has 2 places to go - into the surrounding air as wind resistance, or into the brake/wheel interface as heat. If you descend at the same speed, braking in the same manner, you aren't going to increase the air bra...
by andrew_s
17 Oct 2019, 11:18am
Forum: Bikes & Bits – Technical section
Topic: Chainstay angle - measuring
Replies: 36
Views: 2081

Re: Chainstay angle - measuring

I'd probably just install a clinometer app on my phone, hold the side of the phone against the frame tube, and read off the angle.
It would be best if the phone wasn't in a case at the time unless you are sure it's the same thickness all along.
by andrew_s
16 Oct 2019, 3:25pm
Forum: Touring & Expedition
Topic: the North Coast 500: A Great Wilderness?
Replies: 69
Views: 4580

Re: the North Coast 500: A Great Wilderness?

I don't really camp but will do hostels bunkhouses etc....so if we were to do a weekend riding that area around the estate. ...do you recall seeing a lot of civilisation where a lodge.bunkhouse etc could be found There's the Corn Mill bunkhouse in Strath Halladale, about 6 km south from the north c...
by andrew_s
16 Oct 2019, 10:34am
Forum: Does anyone know … ?
Topic: Heavy "ish" Saddle Bag Mounted on Seat Rails ???
Replies: 5
Views: 495

Re: Heavy "ish" Saddle Bag Mounted on Seat Rails ???

I've used a Camper Longflap full of camping gear on a Bagman QR, which attaches to the saddle rails, but holds the saddlebag pretty close to where it would be using saddle loops. It doesn't have any noticeable effect on the bike handling when seated. Out of the saddle, the high up weight makes the b...
by andrew_s
15 Oct 2019, 4:10pm
Forum: Bikes & Bits – Technical section
Topic: Night lights, side of bars?
Replies: 14
Views: 505

Re: Night lights, side of bars?

Did I imagine it, or did someone recently say that night lights should be mounted on the bars on a particular side of tbe stem? The law says that lights should be mounted centrally or on the offside. Presumably this is to stop people mounting lights on the kerbside fork leg or seatstay, where they ...