Search found 1831 matches

by nez
23 Sep 2020, 2:58pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

Some years ago, I drove a support vehicle for a group of LEJOGers. Five of them. 2008 if my memory serves me correctly. They all had various devices, and all rode the exact same route. Not one of their devices agreed. Can't remember the "errors" but they were fairly different from each ot...
by nez
23 Sep 2020, 1:21pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Plot thickens Re: discrepancy in speed/distance measurements

I was talking to a cyclist I ride with today. He has a Bosch motored Raleigh and his brother has the same one (I don't know the brother, but suspect twins). He tells me he did 40 odd k with the brother a few days ago and the brother's matching Intuit's trip meter read 2k fewer than his. Two thousand...
by nez
22 Sep 2020, 9:09pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

thirdcrank wrote:
sjs wrote:A few turns at biggish roundabouts could do it.


Excellent point


rond point
by nez
22 Sep 2020, 9:46am
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

Does the bike measure distance from the front wheel or the rear wheel? Two variables there. The front wheel weaves so has a longer route. The rear wheel suffers from tyre deformation going up hills and under acceleration, so has a longer route. Very little is available to prove distances. Best I've...
by nez
21 Sep 2020, 9:36pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

BTW I calculate the circumference from the wheel and tyre size as 2268mm which give an even lower reading! On the very basic Bryton computer I have you can set it to prioritise GPS rather than wheel sensor for measuring speed and distance, which is how I use it on some of my bikes with no sensor fi...
by nez
21 Sep 2020, 9:34pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

Thanks for these suggestions. I think the gps may have some inaccuracy but it should reduce over a long ride, so maybe the sensible thing to do is ride 10k (as suggested) and see what the discrepancy between the two is then. If 2280 gives a discrepancy of x, then it should be possible to find a coef...
by nez
21 Sep 2020, 8:07pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

Re: discrepancy in speed/distance measurements

Thanks. Good thought.It may seem picky but it's only reading 81% of the gps distance
by nez
21 Sep 2020, 7:45pm
Forum: Bikes & Bits – Technical section
Topic: discrepancy in speed/distance measurements
Replies: 44
Views: 1140

discrepancy in speed/distance measurements

I have a Koga ebike with an Intuit control panel. The bike has 50-622 marathon pumped up to the recommended level. I also have a Bryton GPS, which I've started using on the bike to record my ride - I follow in a group sometimes and it's handy to look up the route The thing is, there is quite a big d...
by nez
22 Aug 2020, 1:35pm
Forum: Cycle Camping sub-forum
Topic: Campsite Reviews (index)
Replies: 77
Views: 17977

Re: Campsite Reviews (index)

Ling's Meadow Campsite, near Barningham, TL976754 Great little campsite which has been built to be eco-friendly. Big meadow with a small number of pitches (max 30 people). Woodfires encouraged, outdoor cooking area, including a woodfired pizza oven. Can arrange delivery from local bakers and butche...
by nez
12 Aug 2020, 9:19am
Forum: Electric bikes
Topic: Rented battery
Replies: 5
Views: 229

Re: Rented battery

I know. It all seems to be healthy young Germans in the Tyrol. I don't think a tour of the Samerberg in midwinter will provide what I want. ;-)
by nez
11 Aug 2020, 10:58pm
Forum: Electric bikes
Topic: Rented battery
Replies: 5
Views: 229

Re: Rented battery

Madeira in the winter!
by nez
11 Aug 2020, 10:52pm
Forum: Electric bikes
Topic: Rented battery
Replies: 5
Views: 229

Rented battery

Writing about air travel Bosch say this on their website - "We recommend renting a Bosch eBike battery upon arrival at your destination."
Has anyone ever done this? Could it really be possible?
by nez
11 Aug 2020, 10:13pm
Forum: Electric bikes
Topic: Regenerative braking
Replies: 28
Views: 720

Re: Regenerative braking

Mrs Nez has a Koga with with an Ion motor in the rear wheel. It does recover some charge when you're not pedalling - going downhill mostly. Frankly it's not much and not really worthwhile unless you were cycling up and down repeated hills in Derbyshire or Yorkshire or something. I don't think regene...
by nez
11 Aug 2020, 2:29pm
Forum: Bikes & Bits – Technical section
Topic: Under chain stay U brakes
Replies: 19
Views: 787

Re: Under chain stay U brakes

They're not bad at the hand-pull. The pivots are clean and greased. A lot of people would say 'there's nothing wrong with those' I think, but I put the bike back on the road for a mechanically incompetent and skint son, so I don't want to leave him with brakes which are a bit cr*p.
by nez
11 Aug 2020, 2:20pm
Forum: Bikes & Bits – Technical section
Topic: Under chain stay U brakes
Replies: 19
Views: 787

Re: Under chain stay U brakes

IMG_0416.JPG Finally - photos. From which you may judge the bike doesn't live with me... I have made the brakes work but whatever I do I can't make them spring away from the rim with some vim and vigour. What I'd really like to do is replace them with something else, but I don't see any other form ...