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Old 02-22-08, 07:56 AM   #1
victorhooi
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Older Giant Warp DS-One - Upgrading?

heya,

I recently purchased an older Giant Warp DS-One, just as a beginner getting into this. It's currently 7-speed, with V-brakes.

Before this, I also picked up a few new (or nearly new) components cheaply - SRAM X-9 Shifters, X-9 rear derailleur, X-Gen front deraileur, new chain, and a rear 9-speed cluster, as well as some Hayes Solo brakes.

The bike is a bit older, and from asking somebody more experienced, and he thinks I'm going to have difficulties upgrading it. Basically, I need help identifying the components, and knowing what to measure, so that I know what new part to ask for.

I managed to get the rear derailleur to fit, and the rear cluster I assume would fit? (It's the same width, so I guess the splines just have to match up, right?). I'm guessing the chain is narrower, and I have to change the front chainrings as well?

However, the chainrings seem riveted together and onto the crankset, so I guess I have to replace the whole set, along with the BB. However, how do I measure or tell what size or type of BB/crankset I have, so that I can identify it to ask for the new part, or search for it?

Also, I can't seem to get the new front derailleur to fit. The frame seems quite cramped, and the new SRAM X-gen doesn't' seem to fit in the space, and it also can't seem to clamp properly around the tube - too small? (The old one is a Shimano Acera, I think, from memory). Is there a specific front derailleur I need to find/shop for?

Finally, with the front forks, from what I can tell they're not disc-compatible. However, if I buy a new front fork, what do I need to check to make sure it's compatible with the rest of my bike? With the rear ones, I can just buy one of the rear-adaptor kits (e.g. Brake Therapy), and make it work, right?

I guess I'll also need to replace my wheels, since they don't support discs - should I replace the whole wheelset, or just the rims/hubs?

Cheers,
Victor
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Old 02-22-08, 10:35 AM   #2
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Boy, unless you got this bike for free, you're going to be out a lot of dough for the whole upgrade. My vote would be for buying a new bike with all the stuff you want on it. Or a newer used. Then sell the components you have. I honestly think that will be cheaper.

However, if you want to upgrade, you should be able to do most of the drvietrain stuff you want to. Not sure if your 9 spd. cluster will fit on a 7 spd. freehub; my instinct is no, but try it. You will need a 9 spd chain, but will not need to change your chainrings. I'm surprised this bike has a riveted crankset - that's usually low end. To replace, you choose the crank you want and then get a BB to match. Many new cranks come with BBs these days, but you might not want to shell out for a new one.

For the fork, most are set up for many frames and mtn frames are designed with suspension corrected headtube angles. You will need to replace the wheels entirely.

You're looking at probably $200-$300 for the wheels, $150 for the fork, $75-$100 for a new crank and BB. For $550, you could get a solid used bike with all the stuff you want.
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Old 02-22-08, 07:58 PM   #3
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A 9 speed cassette won't fit on a 7 sheep freehub...but if you're switching to disc hubs, it's not an issue.

You do need to get a front derailleur with the correct clamp size...there's three common sizes.

The old bottom bracket should have the measurements stamped or labeled on it. If you're replacing both BB and crankset, you just need to make sure the new BB is compatible with the width of the frame's BB shell. It's either 68mm or 73mm. Some BB's work with either...

As for the fork- it probably has a 1 1/8" threadless steerer, which most modern forks still use. The old fork probably doesn't have more than 80mm of travel...you'll want to stay somewhat close to that with your new fork, or the way the bike steers and handles will be affected.

It would be cheaper to replce the whole wheelset, rather than paying someone to rebuild the wheels with different hubs.

...but like tellyho said, it would probably be cheaper to buy a different bike. Or just ride the bike as it is...
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Old 02-22-08, 08:08 PM   #4
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If you upgraded that bike to the hilt with full XTR or X-0 components, it'd still be a poorly handling pig.

Not trying to rain on the parade, just saying that the Warp is a low-end machine with a simplistic suspension design and a very heavy frame. You'd be money ahead to repair it (if it even needs repairing) with similar parts and ride the snot out of it. Put the parts toward a more worthy frame.
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Old 02-22-08, 09:33 PM   #5
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A close friend of mine had one for years that he upgraded to the hilt and it was a machine to die for. Only reason he got rid of it is he cracked the shock mount after a couple years of freeriding.
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Old 02-22-08, 09:41 PM   #6
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A close friend of mine had one for years that he upgraded to the hilt and it was a machine to die for. Only reason he got rid of it is he cracked the shock mount after a couple years of freeriding.
Probably not the same model as the OP's.

Clues: 7-speed, no discs, riveted crankset.
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Old 02-23-08, 10:33 AM   #7
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heya,

Thanks for everyone for their advice and awesomely quick responses =).

The bike I picked up for about AU$270, which is around US$220. So it wasn't terribly expensive - I was only buying it an introductory, entry-level one, since I'm a beginner, and not that brilliant a rider yet anyhow.

I suppose one option I have is to put the bike together with it's original components, and sell it on eBay, then put that money towards a newer bike, with newer componentry, and a better frame.

What sort of bike, around the Giant Warp level plus some, would I be looking at? $500 would probably be the limit of what I'd be prepared to spend, considering my skill level and time I'd have (I can get an alright one for that pricepoint, right?)

Cheers,
Victor
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Old 02-23-08, 07:36 PM   #8
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Just about any of the bigger bike companies make a decent product for the entry level rider in the 500 range. The differences are usually minor and more on preferences than on quality. Personally, Giant is my favorite, but Trek also has a few decent ones at that range.
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