jmaccelari

Are you sure your sensor battery wasn't going flat? I have noted that compared to the Polar sensor, the Garmin one chows batteries big time.

I don't know how they work. If you set the wheel size manually, then it's quite logical. If the wheel size is set automatically by the unit (as with the 705, for example), then the GPS is required for the calibration on a on-going basis. Once calibrated, the wheel sensor will be more accurate and less susceptible to GPS errors.

The GPS does a lot of averaging and smoothing. Depending on the constellation and satellite visibility, errors can be up to 30m easily. The wheel sensor is calibrated by cross referencing with the measured GPS distance over a period of time so that these errors (hopefully) even out (if we assume the errors to be normally distributed, for example). The "calibrated" wheel sensor is then used when satellite coverage is poor (going through a tunnel, under trees, ...).

You forgot about the 1400m descent if you end where you started... That will DOUBLE the error! OMG!!!!

Since the satellites are pretty much co-incident in a plane as far as the GPS is concerned, the 3rd dimension (Z or height) is not very accurate. This is why the Garmins (for example) have the barometric altimeter. The height from the GPS is usually pretty cr@ppy...

How did the ride go? Sounds like a chilled ride round a great route. I only ever hit that part of the country at the Shova!

I do all my morning rides before breakfast - typically two hours and 50-60kms. You get used to it fast.

[quote name=cbrunsdon' timestamp='1293108056 [' post='1265167] He is the one with CO2 Bombs strapped to his chest You are about to find out what a fatwah is...

Glad you could make it - good to see you! I hope you hurt Thug up Joburg Gen...

I entered for the Argus and was forced to pay the R75 CSA license. I was then sent an email telling me to go to the CSA web site and register there. I did so and got a series of emails telling me I had been approved by CSA and my club - very rapidly, I must admit. I then got sent an email with my new license (also noticed I had a new license number). No CGC tax was requested. I am in Central Gauteng. Looks like the new system has really screwed up the "normal" process, but it works better.

Haven't seen you yet, agteros... I must admit the weather was really cr@ppy last week and only IanJ went out to ride (the lunatic). We have updated the website for our group. Check it out: ICG Web site I still need to post our routes with their profiles and GPX files, but it's mostly up...

A nice bit of honesty. I hope they sort it out quickly. I cannot imagine any half decent manufacturer would knowlingly ship a frame that stains like this. Even if Big H reckons white is a dumb colour. Polishing won't solve the problem. A frame replacement will...

I'd contact Morewood directly....

I've been running UST Crossmarks for four years and have used them for the Epic, Sabie Experience, Sani2 c, Joberg2c, ... They are supposd to be for dry conditions, but they have worked well for me in the worst mud. Wear is also pretty good. I have also found them to be very robust against puncturing and damage. They work for me...

Geez - I hope it is. If it isn't we're likely to have the Yanks dropping their smartbombs on us... The biggest problem is the reference spheroid used. This is typically WGS84, but if a different spheriod is used there can be a difference of a few metres. Not much of a problem for your average race start, but a major problem if you're dropping a ton of munitions. The reference spheroid is a general, static model so it will have deviations from the local datum and will not take into account dynamic effects such as gravity waves. The issue picked up here is not the GPS model, but the confusion of decimals and minutes (. versus '). It's an easy mistake for someone who doesn't understand what they are typing in to make.

Do they do a sperm count test like with the Aussie sheep?

Just got a call from someone who's upset about me criticising the Engen2Engen bunch. I'm not criticising them (I'll leave that up to others). All I'm saying is that the Illovo bunch are more responsible. I've also been called to heel regarding my description of the surf 'n' turf bunch. One racing wanna be tosser swearing at me does not entitle me to label them all as pigs. In fact, knowing some of them should have had me qualifying that description. My apologies to all the decent surf 'n turfers. As for the others, I've had my say...

Cool! See ya!

I think he's ****ing brilliant - really funny! Slapping each other on the arse! Boy, has this guy got it down pat!!! :lol:

Mark is a fantastic guy. Like all people they will stuff up now and again. But if you go to Mark and tell him he will shift the earth to sort it out. It's often worthwhile getting to know your lbs for this reason.

If the car was a bakkie it was the Dunkeld Cycles bunch... Also they're quite a mixed bunch with no distintive kit. Mostly road bikes with some mountain bikes. A lot of social riders so they're quite likely to be all over the road.

A tad misinformed, methinks. All chips are imported. And whether from Germany/Switzerland or the US (such as Racetec use), it is of no importance. The technology is. No chip is foolproof. Low frequency ones can interfere with each other, high frequency ones have a lower range, active ones can be picked up from further afield, but give problems when the battery runs low, passive ones cannot be picked up so far, but do not have battery problems. And so on. The Racetec chips are passive RFID, whereas the Epic ones are active (they have a battery). So you are comparing apples and oranges. The Racetec chips would work fine for the Epic, but the active ones for a short duration, single event work better. The Epic chips would be an absolute disaster if they were used in the environment the Racetec ones have the be used in... Horses for courses and all that.

Victor is the guy who did the technical work on the Raleigh range when they were quite strong several years ago. He's a decent bloke and is sourcing his stuff from the same or similar factories as Raleigh (and probably Silverback). So it's probably decent stuff. Especially at that price...

If it was related to the cost of living, you're being ripped off. CPI is around 7%. R0 to R50 is an infinite percent increase!!! In fact, so is increasing to 5c...

Yep.