- Light weight FS XC bikes – are there any that dont have a steep HA ?
I’ve been looking for a lightweight bike for my wife, XC FS. All the ones I can see seem to have a very steep HA. These are going to be twitchy and not really provide any confidence when the trail turns techy or goes downhill. Also most of the XC ones don’t seem to come with a dropper, which isn’t good. Anyone got any suggestions ?
Lots of trail bikes, but these are overkill for her type of riding. I’m thinking a 120mm sort of bike would be perfect. Lighter than her current Scott Spark 730.Posted 9 months agohols2Member
I’m not sure why race bikes seem to have steep HA’s. Is it a marketing thing ? Does the twitchy feel give you the impression its fast ?
My guess is that proper XC race bikes are optimized to climb without much concern for descents. IME, as a rule-of-thumb, you spend twice as long climbing as you do descending, so losing a bit on the descents is worth it to gain a bit on the climbs. Pro XC racers have much better bike handling skill than most amateurs, so what feels sketchy to an amateur is much less of a concern to them. An XC race bike is not a very good trail bike for an amateur, but people still buy them because that’s what the pros race. I have an old 26″ Anthem with 130mm U-Turn Revelations. It’s a much improved trail bike over the original 80mm Rebas.Posted 9 months agomikewsmithMember
My guess is that proper XC race bikes are optimized to climb without much concern for descents. IME, as a rule-of-thumb, you spend twice as long climbing as you do descending, so losing a bit on the descents is worth it to gain a bit on the climbs.
Spot on really, so long as you stay on it the climbing time will pay you back, I miss my old XC bike to a point, that point being that I never took it out unless I was getting sorted for a race and wanted to get my eye back in. It would much through the miles so well and if you were on your game get down or across a lot more than you ever expected just with a much finer margin for error. That part was fun to a point!!
Hence evolution of the not race orientated short travel fun bikes that are coming outPosted 9 months agokerleyMember
Have you ridden one of these awful steep angled bikes?
My XC bike has a 70.5 degree head angle. But it also has a wide bar, big wheels and a dropper. It’s not twitchy.
Suggest testing what’s available.
Exactly. Perceived twitchiness is a factor of head angle and fork rake. A 70 degree bike does not mean a twitchy bike at all.Posted 9 months agochiefgrooveguruMember
“Exactly. Perceived twitchiness is a factor of head angle and fork rake. A 70 degree bike does not mean a twitchy bike at all.”
Perceived twitchiness is inherently a personal view. The steering geometry has a bearing on it but the rider is more important. Furthermore fork rake is fixed within a narrow range on bikes with suspension forks, so a 70 deg head angle would be considered twitchy by a rider such as myself whose steepest MTB is under 67 deg at sag and the slackest sub 65 deg with big wheels and short fork offset.
If you’re used to road bikes or BMXs then I’m sure you wouldn’t find an XC race bike from a few years back at all twitchy but many of us would.Posted 9 months ago
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