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#1
August 9th 04, 01:52 PM
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upgrading MTB and some OT
I'm thinking about upgrading my old MTB. First upgrade wuill be a new
set of V's. I've been looking at Avid SD5 or SD7's. Has anyone go these, if so what are they like? Some reviews of the SD5's say that they rust very easily, whilst this isn't a real problem (but why make MTB kit that rusts?), are the SD7's worth the extra? Second upgrade may be to convert from 7spd to 8/9spd. Currently the rear hub is XT. Looking around I seem to have 2 options, build up a wheel based on a new hub, or get a new 8spd freehub body. The latter option should take less time and effort, and if I get a hub form ebay and pinch the freehub body, also cost a lot less. I'm assuming that I will also need to get a new axle. Anyone know wha the OLN for an 8spd rear hub is (7spd is 126mm iirc)? Will I need to cold set the frame, or should I be able to bend it far enough (frame is steel, an Orange Prestige)? Now for the OT it I'm going to South Africa for 3 months with work to Bloemfontein, and goig to take my (hopefully newly upgraded bike) with me. Has anyone done any cycling in sOuth Africa, what is teh attitude to cyclists? Also since I have never been ther can anyone tell me anymore about the place? I particularly need to know how much the beer is :-). Any help and advie greatly appreciated. Thanks Bryan 
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#2
August 9th 04, 02:02 PM
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upgrading MTB and some OT
"Bryan" wrote in message
om... I'm assuming that I will also need to get a new axle. Anyone know wha the OLN for an 8spd rear hub is (7spd is 126mm iirc)? Will I need to cold set the frame, or should I be able to bend it far enough (frame is steel, an Orange Prestige)? I het your current hub is 135mm OLN, like any 8/9 speed hub. So you'll need to remove 5mm of spacers from the non-drive side, and redish the wheel. (this answers your frame question too) cheers, clive
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#3
August 9th 04, 02:48 PM
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upgrading MTB and some OT
Bryan wrote:
Second upgrade may be to convert from 7spd to 8/9spd. Currently the rear hub is XT. Looking around I seem to have 2 options, build up a wheel based on a new hub, or get a new 8spd freehub body. There's a third option, an easier option (assuming a Hyperglide freehub): Use 8 sprockets from a 9-speed cassette, with 9 speed-spacers. See http://www.sheldonbrown.com/k7.html#up7 - 8 Of 9 On 7 ~PB
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#4
August 9th 04, 05:44 PM
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upgrading MTB and some OT
On 9 Aug 2004 05:52:51 -0700, Bryan wrote:
I'm thinking about upgrading my old MTB. First upgrade wuill be a new set of V's. I've been looking at Avid SD5 or SD7's. Has anyone go these, if so what are they like? Some reviews of the SD5's say that they rust very easily, whilst this isn't a real problem (but why make MTB kit that rusts?), are the SD7's worth the extra? Second upgrade may be to convert from 7spd to 8/9spd. Currently the rear hub is XT. Looking around I seem to have 2 options, build up a wheel based on a new hub, or get a new 8spd freehub body. The latter option should take less time and effort, and if I get a hub form ebay and pinch the freehub body, also cost a lot less. I'm assuming that I will also need to get a new axle. Anyone know wha the OLN for an 8spd rear hub is (7spd is 126mm iirc)? Will I need to cold set the frame, or should I be able to bend it far enough (frame is steel, an Orange Prestige)? Now for the OT it I'm going to South Africa for 3 months with work to Bloemfontein, and goig to take my (hopefully newly upgraded bike) with me. Has anyone done any cycling in sOuth Africa, what is teh attitude to cyclists? Also since I have never been ther can anyone tell me anymore about the place? I particularly need to know how much the beer is :-). Any help and advie greatly appreciated. Thanks Bryan There's quite an interesting article about cold-setting steel frames he http://sheldonbrown.com/frame-spacing.html Hope this helps Chris -- |C|H|R|I|S|@|T|R|I|N|I|T|Y|W|I|L|L|S|.|C|O|M| Remove the bars to contact me
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#5
August 10th 04, 11:51 AM
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upgrading MTB and some OT
"Bryan" wrote in message om... I'm thinking about upgrading my old MTB. First upgrade wuill be a new set of V's. I've been looking at Avid SD5 or SD7's. Has anyone go these, if so what are they like? Some reviews of the SD5's say that they rust very easily, whilst this isn't a real problem (but why make MTB kit that rusts?), are the SD7's worth the extra? I've got SD7's on one bike and SD3's on another. The SD7's are a lot nicer, giving much better feel and slightly better stopping power IMO. The 7's are easier to adjust as well. The variable modulation available on 5's-upwards levers is a small but worthwhile benefit. Overall, the more expensive brakes are much more pleasant in use. Cables are Avid flackjackets in both cases. I've got a Deore front V on an old hybrid bike, and I would say the 3's are about as good as that - functional but that's about it. The 7's seem to compare well with the Shimano XT's on a friends bike. The springs on both rust a bit, which is a bit poor. Everything else is aluminium. The finish on the 7's is better, as is the adjustment hardware. -- Regards, Mark Davies
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#6
August 10th 04, 01:39 PM
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upgrading MTB and some OT
"Bryan" wrote in message
om... I'm thinking about upgrading my old MTB. First upgrade wuill be a new set of V's. I've been looking at Avid SD5 or SD7's. Has anyone go these, if so what are they like? Some reviews of the SD5's say that they rust very easily, whilst this isn't a real problem (but why make MTB kit that rusts?), are the SD7's worth the extra? Big question: what's wrong with the old V's? I've hardly ever seen any v's that can't be made to work decently well. Second upgrade may be to convert from 7spd to 8/9spd. Currently the rear hub is XT. Looking around I seem to have 2 options, build up a wheel based on a new hub, or get a new 8spd freehub body. The latter option should take less time and effort, and if I get a hub form ebay and pinch the freehub body, also cost a lot less. I'm assuming that I will also need to get a new axle. Anyone know wha the OLN for an 8spd rear hub is (7spd is 126mm iirc)? Will I need to cold set the frame, or should I be able to bend it far enough (frame is steel, an Orange Prestige)? Another big question: why is that an upgrde? Are there hills you can't get up with 7 speeds that you think 9 speed will help? That said, if you are going to make the change, go to 9 speed, the costs are the same and the diadvantages are the same, but you do get one extra sprocket. Now for the OT it I'm going to South Africa for 3 months with work to Bloemfontein, and goig to take my (hopefully newly upgraded bike) with me. Has anyone done any cycling in sOuth Africa, Me, I have cycled there quite a bit. what is teh attitude to cyclists? To summarise: DIE! DIE! DIE, CYCLIST SCUM! DIIIIIIIIIIIIIIIIIEEEEEEE!!!!!!!!!!! But only if you ride on the roads. Be aware that even driving inside a large car is fairly terrifying. Other drivers will overtake at speed just before blind curves with 1000-foot dropoffs on one side. Which side they will pass on is indeterminate. Also since I have never been ther can anyone tell me anymore about the place? I particularly need to know how much the beer is :-). Any help and advie greatly appreciated. Beer is cheap but you will have to develop a taste for lager and pilsener. If you do the usual painful Brit-CAMRA-type-abroad act and walk around saying "But it's not a patch on REAL beer etc etc" you will rapidly find yourself drinking alone. HTH, -- "Mango sorbet is clearcut proof that we have progressed beyond the bare needs of survival and have progressed to the transcendant." - Marc Goodman in talk.bizarre
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#7
August 10th 04, 01:47 PM
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upgrading MTB and some OT
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