|The short answer is that yes, it will be noticeable, but only if you take the time to experiment with the slightly lower tire pressures that a wider rim allows you to use. This is because of the extra support the wider rim provides, and you should be able to drop 3 - 6 PSI depending on how you ride and your local terrain. This will make your bike feel more forgiving, almost like you're running just slightly softer suspension, and you'll also have more traction. Start by dropping 2 - 3 PSI and continue until the tires begin to feel vague in the corners from casing roll, then go back until that feeling goes away. Also, watch for burping. - Mike Levy|
A wider rim provides more support for the tire, allowing you to run less air pressure for more traction. On the flip side, it adds volume to tires, so cross-country racers could use a skinnier, lighter tire without the usual drawbacks..
|I assume that you know how to tune a rear mech, so I won't bother with the proper chain wrap speech. Normally, an 11 or a 12-tooth cog skips under load when either the sprocket teeth or the chain are worn beyond their service lives. The slight mismatch between the length of the chain and the width between sprocket teeth compounds until the chain jumps a tooth and then the process repeats. Unless you replace your chains often, both the chain and cassette tend to wear evenly, so skipping is rare unless a new chain is installed on a worn cassette.|
I read in a following post that you used the same chain on the new bike, which should have produced the same skip free performance as before - unless you flipped your chain upside down, which would make it behave like a fresh chain and skip like mad. Try flipping it around. and if that doesn't work, the culprit may be that your Specialized's chain line is too far inboard and you may have to space the chainring or the crank axle outwards three or four millimeters to get the chain to run smoothly over the outboard cassette cogs. - RC
|Well, considering your location in Birmingham, current riding level, goals and the enduro racing aspect, there's a brace of local options: Choose from The Bike School or Neil Donoghue Coaching.|
The Bike School offers courses at Cannock Chase and Sandwell Valley as well as as guided trips out to Snowdon in Wales. They use three different instructors including Adam Halling who has been exploring the Chase for years, who is also an Elite level enduro racer and fitness trainer, so don't bother trying to out-sprint him. They offer varying types of course but a specific "Jumps and Drops" course is available. A 3-hour course runs between 10am and 1pm for 35GBP with a maximum group size of 6, so you can get all the help you need directly from the coach.
If you want provenance, Neil Donoghue is an ex-World Cup downhill racer, now spending his time as a fully qualified coach who still races enduro at the highest level. Two time UK Gravity Enduro champion and all round nice guy. A little further afield, Neil is based in Shrewsbury and offers skills courses and guiding at Eastridge and Coed Llandegla (as well as some more exotic locations), and also offers a specific "Jumps and Drops course". A full days coaching starts from 110GBP, and includes a video analysis, food/drinks and a USB stick with all your pictures and videos from the day to take home. - Paul Aston
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