#1
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Road Tyre Size
I have 1.95 Knobblies on my MTB wheels and want to change them to Road
tyres. Rim's appear to be 1.3" wide are there any rules on tyre width I have a choice of 1.3 or 1.6 and would prefer the 1.6's I use this bike for the short 5 mile commute to the office across epsom downs and find that when descending I am unable to propel the bike as it coasts faster than the gearing allows me to pedal and despite some pretty big climbs I always leave the big cog on the front all the time and just use the 4 outer (smallest) sprockets on the rear. I'd like to know what to upgrade the gearing to so that I have a better spread of much more useable gears do I just change the rear cassette, the front or both and to what ?????? Thanks TJ |
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#2
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Road Tyre Size
TJ wrote:
Rim's appear to be 1.3" wide are there any rules on tyre width I have a choice of 1.3 or 1.6 and would prefer the 1.6's They ought to fit on, so get the ones you prefer. I use this bike for the short 5 mile commute to the office across epsom downs and find that when descending I am unable to propel the bike as it coasts faster than the gearing allows me to pedal and despite some pretty big climbs I always leave the big cog on the front all the time and just use the 4 outer (smallest) sprockets on the rear. If you're doing big climbs on the big wheel and only the wee cogs at the back it's entirely possible you're being a bit of a Masher. While MTBs' smallest gears are for really daft things the middle ring and bigger cogs at the back are more typically useful for big climbs on decent surfaces at usual road gradients. You might find that upping your cadence is a good idea as it's generally better for your knees and if you do longer rides it generally gives you rather more endurance. I'd like to know what to upgrade the gearing to so that I have a better spread of much more useable gears do I just change the rear cassette, the front or both and to what ?????? Cadence increases aside, you can do either or both of the above to fiddle the gearing. You'll generally need special tools to replace either so usually easiest to leave it with a bike shop and have them do the work. My tourer has a good spread of gears, from walking pace up to practically impossible to spin out. Big ring at the front is 52 tooth, wee one is a 30, at the back it's 11-34. Your mileage may vary, but that does just about anything I want. Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net http://www.dundee.ac.uk/~pjclinch/ |
#3
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Road Tyre Size
TJ wrote:
I use this bike for the short 5 mile commute to the office across epsom downs and find that when descending I am unable to propel the bike as it coasts faster than the gearing allows me to pedal and despite some pretty big climbs I always leave the big cog on the front all the time and just use the 4 outer (smallest) sprockets on the rear. Sounds like you need to pedal faster and push less - use the middle ring (assuming a triple). Your knees with thank you later... I'd like to know what to upgrade the gearing to so that I have a better spread of much more useable gears do I just change the rear cassette, the front or both and to what ?????? http://tranchant.plus.com/cycling/gears/ -- Mark. |
#4
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Road Tyre Size
On 10/6/04 4:12 pm, in article ,
"Mark Tranchant" wrote: TJ wrote: I use this bike for the short 5 mile commute to the office across epsom downs and find that when descending I am unable to propel the bike as it coasts faster than the gearing allows me to pedal and despite some pretty big climbs I always leave the big cog on the front all the time and just use the 4 outer (smallest) sprockets on the rear. That brings tears to the eyes just thinking about it. You must really hate your knees. Practice spinning in low gears. Honestly. I used to ride around there and the climbs are quite steep. ...d |
#5
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Road Tyre Size
TJ:
I'd like to know what to upgrade the gearing to so that I have a better spread of much more useable gears do I just change the rear cassette, the front or both and to what ?????? How many teeth are there on your big chainring? And what sprockets do you have on your cassette? I've been noticing recently that a lot of hybrid/mountain bikes people are riding on the road have what look like very small "big" chainrings - small enough in fact that spinning out on the flat is a likely scenario. If yours is one of these then no wonder you can't pedal fast enough on the descents - increasing your cadence *may* help, as others have suggested, but then again it may not. Unless you can get your cadence up near the 200rpm mark. The solution in this case would be to upgrade your chainset to one more suitable for road riding. Or get a proper road bike and save the mountain bike for going up mountains. d. |
#6
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Road Tyre Size
TJ wrote:
I have 1.95 Knobblies on my MTB wheels and want to change them to Road tyres. Rim's appear to be 1.3" wide are there any rules on tyre width I have a choice of 1.3 or 1.6 and would prefer the 1.6's Definitely the 1.6" ones. They will have a better rounded profile on your rims, and the bike will corner more easily - plus they're unlikely to blow off if you put a lot of air in them. |
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