Jump to content


  • Posts

  • Joined

  • Last visited

Public Profile

  • Province
    Not Selected
  • Location
    Back in SA

Recent Profile Visitors

764 profile views

LBKloppers's Achievements


Domestique (4/6)

  1. I have had a rather expensive experience with these racks. Although the ball is rather tough, the tow bar and the way it is mounted on the vehicle has restrictions that a vehicle owner is not necessarily aware of. Any tow bar mounted on something like those Land Rover struts should be fine, but many are mounted somewhere down there where it is out of sight and out of mind. Do not be caught out! Remember having bikes at any offset from the ball is a lever. Your rack may be rated for 60Kgs but you drive along the roads going through the bumps and potholes, those bikes on the rack exert a force many times more than the rack's rating. And when you add the bike rack to towing a caravan or a trailer, that force and load adds to the strain a tow bar must bear. My tow bar broke of underneath the car on the road between Mariental and Windhoek. Long distances and a steady slow metal fatigue doing its thing. Just be careful.
  2. No it does not. By the time the front mudguard catch debris, most of it has flown up past the down-tube and into your face. The geometry is wrong. It only catches the mud when it gets to the fork.
  3. Guys and galls of the mountain biking fraternity It has been a while that I have been struggling with this dilemma and I wouldn’t mind an in depth discussion on the matter. At home in South Africa, I have a very nice Scott Spark 710 plus with 11/2 speed Shimano XT kit throughout. South Africans will know the type of terrain and weather we face throughout the year in the Swartland, but for the others, its mostly dry and rocky with a patch of sand thrown in every now and then. During the wet winter season it becomes damp(unless one ride while it is still raining), rocky, mud pools with a patch of sand every now and then. The bike came with a perfectly made and matched mudguard that bolts onto my Fox 34 and it does not prevent mud or dust collect on the stanchions! It looks nice, but that is all. At work in Tanzania, I ride a solid but heavy Titan Elite Plus with 10/2 speed SLX kit. In Tanzania there are 2 seasons. Dry and wet. When it is dry, it is DRY! you don’t have dust, you have powder and that powder gets in everywhere. When its wet on the other hand its mud everywhere! Black, tyre sucking clay that gets stuck on everything and it builds up until no riding is possible until excess mud is removed manually. I have tried several of those aftermarket plastic megafters to the fork. Again it fails to function as a mudguard. The stanchions get full of dust or mud, whatever the season and as far as I am concerned, these need to be kept clear of any grime. I even Mcgyver-ed. something similar into the seat post and chain stays to attempt keeping the grime of the chain and the crank, but I have to admit it does not work. Now I understand that as a market where costs could be recovered, South Africa is generally considered too small, but is the mountain biking lads and lasses in wet, soggy Europe or anywhere else where it is wet happy with this rubbish? I have noticed some more tyre hugging types of aftermarket guards on the overseas markets, but does it really work and will it stand the test of African conditions? I don’t know and I cannot comment on them simply because I have never seen a similar type on the market in South Africa. There is the matter of appearance. Some people just would not like a mudguard on the pride and joy simply because it could look ugly (feel free to add your own dislike), but then it will be a choice. I am after something functional. I do not have a LBS around the corner to take my bike for repairs. I have to carry what I want in my luggage through airports and checkpoints AND if a season like 2020 and C19 occurs, I am busted for spares. Reliability and endurance of my kit is of utmost importance. Therefore if I can install anything to extend the rate by which my gear wear down, I will be in a happy place. Am I alone?
  4. After a trauma experience, I all of a sudden needed glasses and due to the nature of both my job and my mountain biking. I absolutely hate wearing glasses! However, I opted from the beginning to use multi-focal as taking the glasses off for when it is not needed, store them somewhere and replacing it when needed was not a burden I was prepared for. This was 10 years ago and I started with Adidas. Worked well enough, but at the time it was damn expensive. When the lenses were due for replacement, I was told that they can not make the lenses on their own. That was a bit disappointing, but life goes on. I have since gotten a Nike frame which was very durable and now I am on something I can not even read the name off. I sweat a lot while cycling and it fouls my view every ride requiring a deep clean with light soapy water after each ride. It is another pet hate of me, but I also hate the streakyness left behind if it is not washed. Therefore I use glasses with an open frame on the bottom. It makes washing and drying easier. I have only a blue filter (for working on the PC long hours) on my glasses as I found the photocromatic filters can be a bother in some situations.Funny enough, I think the most expensive part of my glasses has always been the price of the lenses. The cheapest I managed to find was around R3500/lens. I wear glasses while cycling for two reasons. First there is the "keep the crap out of my eyes" reason ( I ride mostly in deep Africa and the crap can be anything from dust, gravel, and insects to cow dung) and the second reason is that I am vain enough to have a Garmin mounted on the handlebars and I would like to see from time to time what is happening with my effort. Having to use glasses at any time is a pain in the @ss for me, but since my eyes only need the glasses for close-up reading, opting for the operation is not on the table. Glasses it is then :-(
  5. I am with you on this one. I have a forerunner 45 and its a nice piece of kit recording almost the whole day and night, but it has its drawbacks with regard to cycling. If one want to peek at speed/heart rate or anything in particular that is possible with the watch, you have to take extreme care. As a mountain biker, opportunities to read is not always possible at the time you want to read. Rattling down a slope or negotiating a muddy trail requires one to focus on your line and getting the angle to read on the wrist is just looking for pain. If on the other hand you had a Edge, just like a car a quick glance down and you're sorted. I recently started a training program from Garmin and it requires me to ride at certain HRs for certain durations. It is just not working well enough with the Forerunner. Struggling up a loose slope trying to maintain a level 4 HR zone is near impossible with the forerunner. My Edge is old school and all the new data fields are not available, but I can clearly see how the Edge would trump the forerunner if I follow a program like this on my bike. My problem is I have the Edge 500 and it is still working fine. I have the Forerunner and it too is working fine in all other areas and to have these small upgrades does not justify the expense for a new Edge. One thing though. Although there are many opinions about the accuracy of the heart rate monitoring differences between the wrist based watch and the chest strap for the Edge, for me, the strap is a problem and one of my more important measurements I look at is the heart rate. I do not need it to be as accurate as a monitor in a hospital and I did my own comparisons. It is more than good enough for me to easily see where my condition and exhaustion level is with a couple of percent error either way, but that strap....it is not working for me.
  6. Jehosefat, I am not a teacher or even a writer of sorts, but I'll try. Imagine a tennis ball covered in soap bubbles of the same size, but they do not deform like real bubbles. They each must have a nice round sphere. These spheres will overlap each other. Lets say the bubbles are 32 in number just like the GPS number of satellites above our heads. If you can picture this, you're halfway there. You may now position yourself anywhere on the tennis ball and at any elevation within this sphere of bubbles and you will intersect different bubbles at different angles and distances and because at at specific time there are about 11 satellites over our heads, there are way more than the minimum 3 to determine your x, y and z axis's. If you have ever seen how the old school method to develop topographical maps from aerial photos by just using a couple of lenses looking at one point but at different angles, you might start to get the idea. Its just now done on the fly using electromagnetic radiation and calculated by electronics, but it boils down to the same thing. Remember GPS satellites are not geostationary and the receiver of the GPS signal need to use the relativity theory to calculate approaching or departure speeds. Some satellites visible to your device are at relative angles from you due to the curvature of the earth. It takes quite a bit of calculation and one of the reasons a GPS device uses so much more battery power than a normal watch would do. Also remember the entire discussion started with the need to have a barometric measurement on your GPS devise. If you're a pilot you get the actual local barometric readings from the local weatherman. That allows the pilot to make the adjustment to his instruments (correct me if I am wrong, but the pilot does not make this adjustment to the GPS) in order for the instrument to display correctly. As the pilot flies to his new destination, he will get the updates as necessary. A cyclist does not have that. The weather can change in the time since he started on his ride. There in no way the device can know or measure that the reference barometric pressure has changed and on the cycling device, the cyclist do not have the ability the determine nor adjust for the changes as it happens. You also keep asking about cruise missiles. If what you're saying is true (the necessity of maps), then the USA need to have very detailed geographic maps of the whole earth. It my be 2020, but I can guarantee that is not the case. There are a number of tools they use to guide those missiles to its destination. Star positioning, gyroscopic compasses, Radar in various forms and frequencies, Laser in looking forward, looking down, weather and even some remote adjustments from the launch controllers on the fly. Often there will be team who can light up a target using portable lasers or if that is not possible they do that with military satellites. Many options and all of those contributing to the costs to develop and run these machines. Not many countries can afford that and its my guess that the exclusivity of the entire package lead to the global availability of GPS in limited accuracy, because GPS on its own is not enough to do the kind of harm a country like the US fears.
  7. I am a mountain biker and I go nowhere on my bike with the Mule for more than 10 years now. Even the zips are okay as long as I move them around every now and then. Bladder is good, casing is good and the bite valve needs replacement. It is not the most comfortable mass to carry around, but the comfort comes with all the accessories I think I need to carry.
  8. I am not going into the technicalities here suffice to say that GPS does NOT need maps for elevation. And while I disagree with the need for barometric elevation measurement, my experience lead me to favor a GPS elevation. It repeats and it doesn't drop me below sea level.
  9. I don't think you're accurate with this statement. GPS positioning uses moving satellites. Each of those transmit a timing signal. Your GPS chip - whether it is a cycling computer or a wrist worn watch have to calculate the position combining the timing transmissions from each of those transmissions received. there is quite a bit of calculation necessary and the relativity theory plays a rather big role, but the mere fact that the satellites are moving and its transmission spreads over the horizon means whatever unit you're using can calculate the elevation. Consider for a moment the owners of GPS. GPS is owned by the United States Air-force and the GPS was developed as a tool to guide their missiles. Do you for one moment think they are only going to fire missiles in areas with good maps? No. What they do is the limit the ability of the software to calculate too accurately. For a fee, some (Geologist for example) may buy the accuracy upgrade, but you will never be able to use GPS against critical US facilities. I can only guess that Russia does the same.
  10. I notice a lot of the comments are relating to the cramps, but for me what stands out is the change. You WERE used to riding without the cramps and it changed suddenly and severely. Bringing your knee to your chest with discomfort is a red flag. You have to look at that change. Is it your bike, or something else that suddenly happened in your life. If there is no distinct change you are aware of.....Dude, you should have seen a dr. already
  11. Are you using the same USB port every time? I have found that sometimes the "plug and play" features in windows does not detect changes when one swaps the ports. Plugging into the port where it worked last time normally sorts the problem. That is if you did manage to get comms before.
  12. Obtain a picture from the web of a chain whip. Take an old chain and braze the links together to form a tool representing the one in the picture. It does not have to be exact. You need a chain to lock onto the cassette from both sides and a lever rigid enough to loosen the locknut on the cassette.
  13. Absolute nonsense. With the minimum of 11 satellites triangulating your position, a barometer is NOT necessary. Years ago I had a discussion with the okes at Garmin about the fact. At the time they promoted the Edge 500's ability to determine elevation using the barometer and its accuracy. Yet I continuously cycled below sea level! I often departed on a ride at a rough 50 meter elevation and returned 2 to 3 hours later at -200 meters. No there was not a fault with the unit. It had to do with the changing weather conditions for which the barometer did not have the correction that pilots would use for example. Therefore it calculated using the start barometric pressure as a reference making the entire trip's elevation BS.
My Profile My Forum Content My Followed Content Forum Settings Ad Messages My Ads My Favourites My Saved Alerts My Pay Deals Settings Help Logout