Topic: new guy, same old chain question

[mustangcar]

hi ,just got a 1978 cb750k , falling in love with it ,i want to get a strong aftermarket chain with sprockets,my buddy talked about stock chains wrapping and cracking the engine case ,got me scared, what brand and part# should i get? thanks,

[matt365]

DID, RK, whatever.  As long as it is a quality aftermarket O or X ring chain you are good to go.

[kaybee]

Definately go with "O" ring chain. Remember though that these chains are going to come even closer to the engine block.
 The factory sprocket config. for your bike is an 18t front and 48t rear (assuming you have 536 chain). Go with a 17t front and 48t rear if your not doing alot of cruising...otherwise 17t front and 45t rear works out to be a very close factory ratio.

[mustangcar]

thanks guys for the info,my buddy who is a bike mechanic has run into so many 750s with broken case due to chain breakage,i saw one myself last week he has one in storage ,what a shame,who sell replacement cases?,,,so its good to go with a 17/48 for city driving and occasional freeway?,don't plan on alot of freeway, i saw some DID chains on ebay but the application for the chain was only up to the 1977 model 750,wonder why

[754]

A 17 Tooth will give you more chain wear than an 18 tooth. A bit better acceleration off the line with a 17T front.

I would not say an o-ring is much bigger but it is wider!
Telling someone to run a smaller front sprocket when they are asking about chain brakage is like ****ing for virginity!!

Any good bike chain (o-ring or not) is fine as long as you MAINTAIN it. Tsubaki 530 QR is an excellent one.

77 & 78 Honda 750 takes a bigger  630 chain, has a bit different chain offset.. sort of overkill putting that chain size on, unless you are a no maintainence rider..

[kaybee]

A 17 Tooth will give you more chain wear than an 18 tooth. A bit better acceleration off the line with a 17T front.

Your right on that one

I would not say an o-ring is much bigger but it is wider!

Yes it is. If you own a measuring device, check it out

Telling someone to run a smaller front sprocket when they are asking about chain brakage is like ****ing for virginity!!

Whats up your (Y) ?...did you have a bad x-mas or what?
 My point was, by running a heavier chain WITH A ****ing peen link, you will lesson the chances of chain breakage and further more a 17t final drive sprocket will give you more clearance between the chain and crankcase should the chain ever become sloppy or even break. I should have explained myself a little more clearly for people like YOU.

Any good bike chain (o-ring or not) is fine as long as you MAINTAIN it. Tsubaki 530 QR is an excellent one.

Won't waste any time on that one....

77 & 78 Honda 750 takes a bigger  630 chain, has a bit different chain offset.. sort of overkill putting that chain size on, unless you are a no maintainence rider..

You can easily purchase 530 sprockets. A 530 is much less apt to break vs 630 and there isn't a whole lot of weight difference betwee the 2... .....

Again, a 17t front sprocket with a 530 chain will lesson the chances of chain breakage resulting in crankcase damage!!!

Flame suit zipped and ready dude!!!

[754]

Well considering a 19 tooth will usually fit, I would say an 18T should pose no problem with an o-ring chain.

How many years did you say you had 750,s??

[.RJ]

I can put 100 hp to the tire on my CBR with a 520 chain (and smaller front sprocket than stock) with no problems - plenty of track time this year on it as well.  Seeing minimal wear on the chain and sprockets after ~10k miles

So for the 750 - a good (DID, RK, etc) 530 chain and 16/17T front sprocket should be just fine.

[mustangcar]

guys THANKS!,I had never given the thought of having a smaller diameter tooth sprocket is in a way safer giving a little more room between the case and chain,i do understand the smaller sprocket might increase wear, I try to lube the chain almost everytime before a ride, I'm even thinking of making a gadget consisting of a container with a on/off valve to slowly drip oil on the chain while riding ,I'v seen some systems on the net where the oil drip on the chain gets controlled by engine vaccum made in europe,might be overkill to some but what the heck i think its neat to have, heres the site that makes that kit for motorcycles and bikes  www.scottoiler.com

[kaybee]

I try to lube the chain almost everytime before a ride,

I heard throught he grapevine (or maybe it was that 754 dude) that the best time to oil your chain is *after* you ride whilst the chain is still hot (and bothered)...I could be ****ing for virginity though.

[333]

I try to lube the chain almost everytime before a ride,

I heard throught he grapevine (or maybe it was that 754 dude) that the best time to oil your chain is *after* you ride whilst the chain is still hot (and bothered)...I could be ****ing for virginity though.

The reason this is done is so when the chain cools, it draws the lube inside where the pin goes through the inner link where the lube is needed most.  Then the next time you go for a ride, take a rag sprayed with WD40 and wipe the excess off so it doesn't end up on the rest of the bike.

[754]

Actually I oil it when it NEEDS it..not at an interval that can often be too much oil.. or not enough..like riding it home to lube it after 3 hrs in the rain washed everything out..

but Hey to each their own..

like the guy i know that ran 19T for lower rpm;s and less chain wear.. he got 40,00 miles out of a non o-ring Diamond chain..

perhaps kaybee has some stories of remarkably long chain life, that we have yet to hear...