Help I want to buy!!

[boman]

Help. Any body have any idea where I can purchase a 47 tooth rear sproket for my 1995 Suzuki Bandit GJ77. I have purchased a 49 tooth sproket, and that is all they say you can get for them. I took a 47 tooth off and would like to replace with the same. The reason being that most of my running around is done a 100kph and I would like to drop the revs down a smidgen. Any help would be greatly appreciated.

[speeding_ant]

Well you can get most size sprockets almost anywhere. And if you cant find it, Sawyers in Wellington can machine one quite cheap. I wouldnt recommend dropping many teeth on the bandit however, you will notice a lack of acceleration in all gears. The gearing that they are in at the moment means that at 100km/h you are not far away from the power band for overtaking. The engines are designed to rev high so don't worry how high it revs.

[FROSTY]

dude give Shaun at MOTO DYNAMICS a yell --he will have sprockets to ya in a jiffy

[boman]

I quite liked the 47 tooth sprocket. It only dropped the revs about 1000rpm. Down to 8000 @ 100kph. I would have kept that but it was very worn out. Just trying to get better fuel milage. Over taking was not an issue either, I found that it wound up pretty happily through the revs.

[speeding_ant]

I quite liked the 47 tooth sprocket. It only dropped the revs about 1000rpm. Down to 8000 @ 100kph. I would have kept that but it was very worn out. Just trying to get better fuel milage. Over taking was not an issue either, I found that it wound up pretty happily through the revs.

That'd make sense actually as I have the VVT model. Its useless under its powerband.. It pops the valves open at 11000 so it cruises at 110 at 10000. Another reason why I like the larger sprocket, with 49 teeth it pops the front wheel up in 1st ;) :Punk:

[boman]

The flip side of this is that I can Buy a 14 & 15 tooth front sprocket. Has any body fitted one. Do they fit with out the chain hitting inside the housing. What did it do for the RPM.

[Wasp]

feck, sorry man only just seen this

100km/h should be 10grand on a gj74a, not 100% sure what the newer models are but should be roughly the same

not sure what this will do but i imagine it would take it out of the power band (is yours a vvt model?) i'd hate to be doing 100km/h and having to drop 2 gears down just to pass a car.

I also see the point though - at 180 my bike would just about be touching the red line but once again i reckon it would drop it below the "power mark" so I personally would do it

i dont think its worth changing the sprockets - you still need to change the oil frequently

let us know what you end up doing though - im really interested to see what happens!

[boman]

Mine has variable timing. Gj77a model. 9500RPM the valves open and with the lower revs ie: the 47 tooth rear, I never had a problem overtaking in 6th let alone dropping down 2 cogs in the box. All i'm trying to do is get more than 180km out of a tank of gas. Getting hard to convince the missus that a bike is necessary. You know?? Most of my running is done at 100kmh as i work out of town for nz steel.

[speeding_ant]

Mine has variable timing. Gj77a model. 9500RPM the valves open and with the lower revs ie: the 47 tooth rear, I never had a problem overtaking in 6th let alone dropping down 2 cogs in the box. All i'm trying to do is get more than 180km out of a tank of gas. Getting hard to convince the missus that a bike is necessary. You know?? Most of my running is done at 100kmh as i work out of town for nz steel.

Replacing the sprockets will help fuel consumption. Also check if your chain is OK if the sprockets were run so low. Having smooth running gear helps a lot! You should also get a scottoiler if possible, they do wonders for wear! My bandit does around 200-250kms per tank, depending on how I ride. Yours should do the same?

[Wasp]

meh, i got 150 to a tank of 98

the 636 gets 200ks and its a bigger tank lol

[speeding_ant]

meh, i got 150 to a tank of 98

the 636 gets 200ks and its a bigger tank lol

Haha, not as bad as a ride I went on a few months ago. 100Kms to a full tank. Stuck in high revs the whole trip. The bike seemingly loved every second too ;) Needed new tires after that ordeal.. :Punk: And you're noticing this bike needs oil changes a lot sooner than other bikes? It gets all manky quite quickly......

Thats 200ks of fun though :)

[Wasp]

yea i think the bandit is oil every 8 ks, i'd reccommend doing it every 4 (not that i did)

[speeding_ant]

yea i think the bandit is oil every 8 ks, i'd reccommend doing it every 4 (not that i did)

Oh ok.. thats about the same with all bikes init? :whocares: i do mine about every 4k anyways!

Hey does your mate still have that can available?

[mops]

i change ever 3k with group IV synthetic 10w40... but it's just me...

[speeding_ant]

i change ever 3k with group IV synthetic 10w40... but it's just me...

I do semi just to save costs. I race it round on weekends and commute on weekdays. It's my belief that fully synthetic doesnt heat up fast enough for a 20 minute commute so I dont use it due to engine wear? I might be wrong but thats what I got told by a mechanic.

[Wasp]

beats me, i ride my bike

i dont know what can you mean so i guess not!

[speeding_ant]

beats me, i ride my bike

i dont know what can you mean so i guess not!

Heh i dunno.. You mentioned an exhaust can at some point a few months ago. Said your mate was selling one

[boman]

Just to get back to my question. Has any body fitted either a 14 or a 15 tooth front sproket toa gj74 or gj77 gsf250 Suzuki before without any issues??