Has anyone changed the gearing?

[Bbref36_imp]

Has anyone change the front or rear sprockets to a taller gear to get the RPM's down? Was on the interstate yesterday and was running 4500-5000 RPM the whole time (in South Dakota 80-83 on the interstate won't get you a second look from the HP).

It seems to me the CB could pull a taller gear and maybe get a little better mileage........thoughts?

 

[dailyrider_imp]

Has anyone change the front or rear sprockets to a taller gear to get the RPM's down? Was on the interstate yesterday and was running 4500-5000 RPM the whole time (in South Dakota 80-83 on the interstate won't get you a second look from the HP).

It seems to me the CB could pull a taller gear and maybe get a little better mileage........thoughts?

I thought about it because I commute every day. But I really love how this bike responds to the throttle at speed. I don't have to down shift, just open it up and I am past whoever was in my way and it it so incredibly quick and smooth doing it. If I run at 80 mph I get around 45 mpg.

 

[Bbref36_imp]

Has anyone change the front or rear sprockets to a taller gear to get the RPM's down? Was on the interstate yesterday and was running 4500-5000 RPM the whole time (in South Dakota 80-83 on the interstate won't get you a second look from the HP).

It seems to me the CB could pull a taller gear and maybe get a little better mileage........thoughts?

I thought about it because I commute every day. But I really love how this bike responds to the throttle at speed. I don't have to down shift, just open it up and I am past whoever was in my way and it it so incredibly quick and smooth doing it. If I run at 80 mph I get around 45 mpg.

I agree with the ability to pull, just seems to rev more than seems necessary??

 

[Mike Bee_imp]

Has anyone change the front or rear sprockets to a taller gear to get the RPM's down? Was on the interstate yesterday and was running 4500-5000 RPM the whole time (in South Dakota 80-83 on the interstate won't get you a second look from the HP).

It seems to me the CB could pull a taller gear and maybe get a little better mileage........thoughts?

I thought about it because I commute every day. But I really love how this bike responds to the throttle at speed. I don't have to down shift, just open it up and I am past whoever was in my way and it it so incredibly quick and smooth doing it. If I run at 80 mph I get around 45 mpg.

I agree with the ability to pull, just seems to rev more than seems necessary??

I agree with the ability to pull, just seems to rev more than seems necessary??
Yes, I plan to change the front sprocket. The bike has plenty of reserve power on tap to pull a taller gear. If on occasion I need to drop a gear to make a quicker pass (or quick grin) that's what tranny's are for.

 

[Jim21680_imp]

I would probably do the same if I rode more highway; the bike can definitely handle it. Also, I think it would be unanimously agreed that the front sprocket is the one to make the change.

 

[Buffalohead_imp]

I have a Suzuki TU250X. Most of the guys on the TU forum change their front sprocket for taller gearing. I haven't done it because I need the low gearing because of my sidecar.

I only mention this to say that they change from a 15 tooth sprocket to a 16 tooth. They say it's amazing how much difference the one extra tooth makes. So, be careful to not buy too big of a sprocket. I guess a little goes a long way. FWIW

 

[the Ferret]

In my experience a tooth on the counter sprocket is worth about 400 rpms. Ie: if you are running a given speed at 5000, going up 1 tooth on the counter will net 4600 at the same speed. Conversely it will make it slightly harder to take off, and might require a downshift for going up hill or passing.

 

[Buffalohead_imp]

Front sprockets don't cost much. The TU's are only about $12. I would increase by one tooth at a time. I'll bet one will be enough. Certainly two will. But, I don't know how many the CB has originally. It's a percentage thing.

 

[Bbref36_imp]

Thanks for the great feedback, not sure what I might do but will update if I do something.

 

[rboe]

Keep us posted. This might be a great idea when on a road trip. Go back to stock for in town riding.

 

[cbdtran_imp]

If I want to experiment with one extra front tooth, at 2000 miles, will I care about changing chain at all? I don't mind to spend $15 for a front sprocket self serviced. I however think about my riding style - 85% seat time at 70 mph 4k rpm, 5th gear at 35 MPH in city, will 400 rpm lower affect the engine response?

I might do it, if I don't like the result, I can always change back as i about to adjust the chain slack in near future. It is nice to run the bike at 60 mph at 3k rpm

In my experience a tooth on the counter sprocket is worth about 400 rpms. Ie: if you are running a given speed at 5000, going up 1 tooth on the counter will net 4600 at the same speed. Conversely it will make it slightly harder to take off, and might require a downshift for going up hill or passing.

 

[TINK_imp]

Has anyone found a source for a larger (19T) front sprocket? Mfr, part number? Perhaps an alternative Honda Part number?

Honda fiche: SPROCKET (18T) 23801-MAZ-000 (530 chain size)

Does anyone know for sure if there is enough room for a 19T sprocket to clear the cases?

TINK

 

[Buffalohead_imp]

Has anyone found a source for a larger (19T) front sprocket? Mfr, part number? Perhaps an alternative Honda Part number?

Honda fiche: SPROCKET (18T) 23801-MAZ-000 (530 chain size)

Does anyone know for sure if there is enough room for a 19T sprocket to clear the cases?

TINK

The first place to look is JT Sprockets. They're the largest manufacturer. I would bet they make one.

JT Sprockets – The World's Leading Sprocket


(or was it Cogswell Cogs and Spacley Sprockets?!)

 

[Ack-CB11_imp]

I'm waiting for a 520 kit, 2 birds 1 stone.

 

[blues925box_imp]

I have not had any luck finding a 19T drive sprocket. but would like to.

 

[Buffalohead_imp]

I have not had any luck finding a 19T drive sprocket. but would like to.

Just curious, how many teeth does the stock sprocket have?

 

[the Ferret]

I have not had any luck finding a 19T drive sprocket. but would like to.

Just curious, how many teeth does the stock sprocket have?

Just curious, how many teeth does the stock sprocket have?

Stock drive sprocket is an 18 tooth. In the old days Honda used to offer 1 tooth up and 1 tooth down on the microfiche, but there are no options on the CB 1100 fiche.

 

[Randy B]

I'm waiting for a 520 kit, 2 birds 1 stone.

This is a heavy bike with plenty of torque. I wouldn't want to risk a smaller chain to gain maybe 1 or 2 HP. It's just not worth the added wear on the sprockets and chain or the risk of premature failure of either.

 

[blues925box_imp]

I have not had any luck finding a 19T drive sprocket. but would like to.

Just curious, how many teeth does the stock sprocket have?

Just curious, how many teeth does the stock sprocket have?

Stock drive sprocket is an 18 tooth. In the old days Honda used to offer 1 tooth up and 1 tooth down on the microfiche, but there are no options on the CB 1100 fiche.

Just curious, how many teeth does the stock sprocket have?

Stock drive sprocket is an 18 tooth. In the old days Honda used to offer 1 tooth up and 1 tooth down on the microfiche, but there are no options on the CB 1100 fiche.
thanks ferret = on to other thing.

 

[EGAlvarez_imp]

Bringing an old thread back to life...

I purchased some filters and oil from a fellow CB owner here. The sale also included a 19T front sprocket that I have not yet installed. Has anyone installed a 19T counter sprocket that can confirm plenty of room between the chain and cases.
Also, did you notice much of a difference at highway speed? Hard acceleration is not that important to me. I'll be sure to post some observations once I try it out for myself.