Chains

[Tony Two Times]

In the interests of peak performance at the very back of the pack at Conondale next weekend I'm gonna put a new chain on me '78 OR 390.

Any recommendations? Tricks for sizing?

T2X

[80-85 husky]

get the best o ring chain you can afford, fit it ride it, adjust it and forget about it for the next 5 years

[Gippslander]

This is the one I use, not as fat/heavy as most ORing chains.  Almost set and forget - best to always use new sprockets though. And of course - use quality spray on lube and follow the instructions.

http://www.ebay.com.au/itm/DID-520VT2-narrow-x-ring-gold-chain-520-pitch-120-link-suits-Honda-CRF-/272217723344?hash=item3f6170d1d0:g:mSQAAOSwyQtVtxGP

If you want least loss of HP then plain chain is best but crikey what a constant pain in the backside and me thinks the constant adjusting leads to faster sprocket wear.

[Brian Watson]

I use a "standard" heavy duty chain.. no oring etc... I use the old school boiling lube method.. a tub of linklife... lube it.. put it on.. race it.. no adjusting during the day.. no spray lube during the day....just set it and forget...

[skypig]

I use a "standard" heavy duty chain.. no oring etc... I use the old school boiling lube method.. a tub of linklife... lube it.. put it on.. race it.. no adjusting during the day.. no spray lube during the day....just set it and forget...

"Hard core", and extra vintage!

[GD66]

https://www.facebook.com/notes/klim/busting-motorcycle-chain-myths/416157056989/

If you can't be bothered reading this, the short summary is the average horsepower loss between an o-ring chain and a non-o-ring chain is around 1/50 of one horsepower.

[Mick D]

2% of one horse power,,,, no wonder I have never been able to tell the difference. Even on a small capacity

Yet we have had to listen to BS for years about how much HP we have been robbing ourselves of

Maybe a hair splitting road race or land speed record, but this is a dirt bike forum and I prefer to keep the dirt out and the lube in
And it gets me one step closer to my dream in life, maintenance free, arrh the serenity 

Fine grit dust mixed with lube equals valve grinding paste

[Barra]

i always found o'ring chain with NO lube works a treat.   Just a spray with CRC after each wash to "keep it free'.   Still seemed to last forever.

[Bullet]

We stock Husky sprockets and chains. Non oring, Oring,Xring to buy go to www.prime8racing.com.com.au
Cheers Mick

[grouty]

I'm with Watto on the chain front. I have always used a heavy duty standard DID 520. I use the boil in a bag (tin) method of lubing. Never in 40+ years of riding have I had a chain snap. They all last really well. The only exception is the old twin shock KLX250. That does have a DID O-ring chain. No idea why really 

[Tony.Brown]

DID X-ring, 16,000 kms on my KTM620, maybe adjusted two or three times, then went onto my sons bike for several years.
Hard to beat.
Tony.

[jerry]

And why are the old school joining links so hard to find? J (Possibly a dumb question!)

[bigk]

When it comes to chains, it really comes down to how much you want to spend. You may well want a high quality, long lasting chain but if you don't want to spend $150 -$300 for a big brand name, that's not going to happen. 520 chain price range is $40-$300. Decide what chain life you want & what budget you have, then go for it. VMX bikes generally don't need the ultra narrow chains that modern 4T bikes require either. There are some quite good non brand name chains on the market, with the same or higher tensile strength than some of the big brands, for about half their price. You just have to do a little research.
K

[davidmc]

Seen 1 HP increase on dyno from lubing a dry chain,
125 MX GP bikes used older chains to race on,
They had less drag.

[80-85 husky]

non o rings are fine till you hit a real souper track or fine sand, then they are stretched and shagged in one go. the granite sand at ravenswood when wet will sort a non o ring in a day.