Race chains & sprockets.

[Slyder]

After catching heat over ordering a 520 kit for a litre bike, I have some other info for ya

DID ERV3 = 8650 lbs tensile

EK MVXZ = 9300 lbs

That's for 520 pitch, My 520 chain is stronger than DID's 530 ERV. Slick. The DID is the lighter chain though. Thiner side plates = lighter weight but clearly not the strongest.

In your application, you'll probably want the lighter chain.

As for sprockets...I've used vortex without a problem, even though the rear aluminum isn't hard anodized. I had no problems with them on my gixxer 750 though. Vortex prices aren't crazy either. Sunstar are stamped. Not good. Not pretty when they explode either. Never used Renthal, but have never heard anything bad about them.


Oh yea, the backside of the EK chain box also says to clean the chain with a biodegradable degreaser, then to use kero if necessary.

[Kurlon]

After catching heat over ordering a 520 kit for a litre bike

I've been looking at converting my GS from 520 to 428... newer chains are a crapload tougher than they used to be.

[xsiliconkid]

DID ERV3 = 8650 lbs tensile

EK MVXZ = 9300 lbs

My 520 chain is stronger than DID's 530 ERV. Slick. The DID is the lighter chain though. Thiner side plates = lighter weight but clearly not the strongest..

exactyl that's why EVR3 is not good for liter bikes.

maybe I was not all that clear - it's the stongest/weigh ratio chain.... my comments were aimed at a)knowing it was for a SV and b) looking for power savings of going non O ring.... not necessary going to gain anything

BTW the evr3 has 15% greater fatigue strenght than evr2 - make sure its a EVR3, there are still EVR2 and even EVR1 chains out there.

[KB]

Back when I was crewing for my friend in the 80's we used to get an o-ring chain and cut all the o-rings out. That seriously took like an hour to do. We also used to shave the wheel bearing seals, remove any pre-sealed bearing seals, make light "springs" to hold the brake pads off the rotors a little, and all sorts of silly things.

It really was noticeable on the 883 though!

Are you fuckin serious???

KB

[Slyder]

exactyl that's why EVR3 is not good for liter bikes.

Which is why I bought the EK MVXZ

I thought I had a scale here, I was going to weigh the chain (uncut, 120 links) and then try to get someone to weigh an uncut ERV to compare to. I know the DID is lighter, but this thread got me curious. Unfortunately, the scale I found was broken.

[xsiliconkid]

on Oring chains?
maybe there is something else in WD40 that's not liked by the o/x rings - I know they don't like it..

In the sake of correctness
MY BAD, Turns out there is no Kero in WD40.
It does has a significant amount of petroleum, creating a penetrating fluid primary aimed at Water Displacement, hence the WD..... and the 40.......
http://en.wikipedia.org/wiki/WD-40

Given the make up - my point stands - it may start to dissolve O ring material before the light machine oil does any good...

[BMFR6]

wd-40..... no good for o-rings
kero.... recommended by a lot of companies on the chain care instructions (but not all)

[zx1012r]

Are you fuckin serious???

KB

Absolutely! It seems like piddly stuff now but it was under the premise of every little thing you could do might help.

Now the every little thing you can do is stuff like trick fork internals, GMD setup, Dyno's for jetting, ceramic bearings, 0 weight engine oil, lightened rotors and wheels, looser crank bearing tolerances, etc. etc. etc!

The biggest thing you could do back then to improve your times was to not eat a Bryar burger before a race.

Mark

[CEO]

I have driven sprockets and a DID 520ERV3. Both are great stuff and I got a good deal on the whole kit from MotoMummy

As for cleaning, kerosene is the best cleaner... the only thing that the manufacturers do not recommend is leaving the chain soaking in it for more than 30 minutes.

[OreoGaborio]

OOF! Did some searching & found the DID ERV3 chain is up around 130 bucks.

welllll alright... Guess I'll pony up since I'm a big balla expert now & shit.... or something

[BMFR6]

OOF! Did some searching & found the DID ERV3 chain is up around 130 bucks.

welllll alright... Guess I'll pony up since I'm a big balla expert now & shit.... or something

theres going to be some good mid-pack LW racing this year!

[OreoGaborio]

theres going to be some good mid-pack LW racing this year!

For added "bling" I spent the extra 4 bucks & got a black sprocket... should set off the gold chain nicely

[Sheppo]

For added "bling" I spent the extra 4 bucks & got a black sprocket... should set off the gold chain nicely

It'll match your shiny black tank

[OreoGaborio]

Yup!