Rear brake disc and pipe straightening and o-ring chain

[99CR250]

Hi
questions all about 99 cr 250

my cr has a FMF front pipe which has been pranged. It's been like that since before I got it, it runs well and doesn't seem to be short on power but someone said it will be losing power as as a result. . Who does pipe straightening (Auckland) and any ideas what a straightening exercise costs? Thanks

I need to replace the rear brake disc, any suggestions on where to get cheap replacement?

the O-ring chain looks pretty dry and slightly sticky, but knowledgeable biker said chain was good. What type of oil/lub best and best procedure to reliven, looking for cheapest option for now.

Thank you

[B0000M]

chuck some wd40 on the chain

sorry cant help with cheap discs

as for the pipe, first thing to try is fill it with water, plug the ends with rags etc, then stick it in the frezzer, this will pop out most dents from a pipe, however if you leave it too long they can split

[Jinxycat]

1. fill with water and freeze it or pressurise with gas and heat the dent, search threds on here or thumpertalk.
2. maybe trademe?
3. wash out with kero or hot soapy water and re lube.

cheers.

this is my way but will probably start debate as to the pro's and con's of each, lol.

[Jinxycat]

1. fill with water and freeze it or pressurise with gas and heat the dent, search threds on here or thumpertalk.
2. maybe trademe?
3. wash out with kero or hot soapy water and re lube.

cheers.

this is my way but will probably start debate as to the pro's and con's of each, lol.

[camchain]

New disc? Look at 'MetalGear' brand made in Oz. Get them through Bits4bikes website (I think this is Whites the wholesaler?) My pair were $100 cheaper than OEM. 1mm thicker and less wavy for longevity but heavier as well.

I think it's been mentioned on here that Birchy fixes squashed pipes? Custom Chambers in East Tamaki does them. About $200 from memory. Couple of times I've cut mine in half, knocked out dents and welded back up. Easy to get at dents but a bit trickier to tack together for right shape again. Made up a quick jig to re-align things.

If chain is starting to kink up in the links I reckon it's probably on the way out. When the 'O' rings wear out, the tiny bit of lube inside the link dries out. I performed surgery an old chain with angle grinder once. Found dry crusty traces of lube in the sticky/tight links, when one next to it might still have good lube remaining inside. Thats unfortunately how it is with chains though. You are the weakest link - goodbye.

I like Castrol Off-Road chain lube best of all brands. Really works it's way into pins and bushes 'cause it bubbles up when you spray it on. Currently using chainsaw bar lube. Flings & strings a bit but cheap.

[99CR250]

Excellent, thanks for the answers, like the water/ice trick for dents...

B0000M, I thought WD40 was a bit bad for chains as it's so thin and i was told something about it removes other lube??? I dunno, that was a long time ago. if it's good for use then great. is it suitable for one off or regular/frequent use?

Cheers

[cheese]

I think that Aaron can get some good prices on a new disk. Dents, Chris Birch can get them out for $70. WD40 is fine on oring chains. the non oring ones you would wash the grease out apparently.

[barty5]

ive already checked $$ for you and all my suppliers are outa stock