2 smoke lover
What is the best way to look for Sprockets online? I have a old Suzuki with a weird 525 size which with modern chains is outkill. I want to go a 520 or a hign quality 428 chain. But if I go with the 428 size I would have to work out what sizes I will need to get the right final drive ratio. If I go that way with the 428 chain I would have to find if those sizes are available in the spines and mounting holes I would need. And I don't know the best way to go about it.
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Then extrapolate 50 years into the future.
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Anorak
Originally Posted by diesel pig
JT cattledog
no difference in sprocket sizes for 428 vs 520, ratios are ratios
pm me if you want to DP (butt only to talk about sprockets)
https://www.jtsprockets.com/catalogue/
guessing this is the 520 one you want suzuki gsx400? t350 isnt listed but early gt250 is same as gsx
https://www.jtsprockets.com/catalogue/part/JTF1373/
likely this one rear https://www.jtsprockets.com/catalogue/part/JTR1826/
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Forum whore
Deleted, already been answered.
No8 Wire Extraordinaire
And with that one post husi went on ban for sexual harassment
Don't you look at my accountant.
He's the only one I've got.
Anorak
Somewhat explains the 10 pms after 10pm from the hutt last night.....And with that one post husi went on ban for sexual harassment
Kinky is using a feather. Perverted is using the whole chicken
2 smoke lover
I understand ratio's are ratio's but in the decades of messing with motorbikes one rarely can get a direct replacements when doing things like this. Such as replaceing 525 14/38 set up with set of 428 sprockets and say I can get a correct 38 back 428 sprocket but not a 14 front sprocket but can get a 13 and 15 front sprockets. That means to keep the orginal ratio, I would have to find either a correct 428 sprocket in 35 teeth for the 13 front sprocket or a 41 one for 15 front sprocket. I was Hoping there was a site where you could tap in some numders and it would spit out some answers. I want my life to be easy!
Compare Pornography now to 50 years ago.
Then extrapolate 50 years into the future.
. . . That shit's Nasty.
Anorak
you divide the rear by the front ie 45/15 equals 3.0 as does 12x36 13x39 14x42.
https://www.jtsprockets.com/fileadmi...tgearratio.pdf
in your case 13 36 would be close enough.
tell me the bike and your gearing you want to replicate.
Personally i wouldn't use 428 on a bike over 250/350 unless it was a race bike.
That said a 415 race chain can cope with 50HP ie RS125 Honda.
Kinky is using a feather. Perverted is using the whole chicken
No8 Wire Extraordinaire
415 is typically higher quality than shitty tiddler chains. Some of that stuff is budget in a lousy way.
An RS125 is about 37hp. 50hp is the realm of SotA tuners and riders who replace stuff several times a year.
Don't you look at my accountant.
He's the only one I've got.
Hardcore Biker
if you are getting close to the limits of a chain, running say 15 : 45 will decrease the tensile load 20% compared to running 12 : 36.
another thought ... 2 engines put out 50 hp. one does it at 13000 rpm the other at 7000 - one of them loads the chain almost twice as much as the other
2 smoke lover
I am starting to think a light weight High Quality 520 X - Ring would be the way to go and it would make finding the right size sprockets easiler.
Compare Pornography now to 50 years ago.
Then extrapolate 50 years into the future.
. . . That shit's Nasty.
Anorak
https://www.ducatispares.co.nz/produ...with-clip-link
Kinky is using a feather. Perverted is using the whole chicken
Anorak
Squat is considerably different as well big differences in singles twins and fours too.
Some bikes you can't go to big or small as you run out of room or eat the swingarm.
Ducatis at the 916 changed the primary ratio to allow for less strain on trany and clutch and allowing gearing that would work with the swingarm and hub and countershaft room. Also they never had a hunting tooth.
Kinky is using a feather. Perverted is using the whole chicken
2 smoke lover
OK, So I am thinking about a DID 520VX3 on a JTR431 14 and either a JTR1826 37 or 39 (there is no 38 listed) So do I want to slightly over gear it or under gear it? It's for a Bike I would be road touring, I suppose that's the right name for what I will do with it. I won't want to hurt the performance but I also don't want a petrol drinking monster. Any ideas?
Compare Pornography now to 50 years ago.
Then extrapolate 50 years into the future.
. . . That shit's Nasty.
Anorak
try oe or another sprocket company that does a 38 if thats what you want?
Just cross reference it with other bikes that list this. I would try metal gear pbr renthal afam.
Or if you have the room in the front 41 and 15 is essentially so close you will never notice the difference. There is likely more difference in changing the rear tire width and profile.
A lower number will give less revs at 100KM/h i.e 37/14 =2.64, 39/14=2.78
It might be easier if you actually tell us what the bike is. That said a tooth on either side on the is unlikely to make much noticeable difference.
but if you are hyper interested load the gear ratios into this
this will tell you the exact speed an rev differences.
https://www.gearingcommander.com/
we run the motard on regina chains made for supermoto, they wear very well and are one of the few high rated chains that are non oring that are still affordable.
Kinky is using a feather. Perverted is using the whole chicken
No8 Wire Extraordinaire
Ahh. Standard. 100%.
Only exceptions were 90s eurobikes trying to get past noise testing.
Don't you look at my accountant.
He's the only one I've got.
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