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Old 08-27-2013, 08:35 AM   #6091
positron007
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Originally Posted by Auto-X Fil View Post
Any fuel economy data? Did you mess with the programming, or just run the suggested settings from B&B?
63mpg off the first tank which is a 20% improvement over what I was getting with stage 1 mods
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Old 08-27-2013, 01:01 PM   #6092
kiwi5
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Anyone have a 13/42 or 14/45 sprocket set up? My question is whether this set up allows for highway cruising at around 90kph without stressing the motor. I've got some great rides over here in the North Island of NZ, but some are as far away as 3 hours so I do need to be able to cruise at around 90kph. Alternatively, I might go with a 14/44 set up for the highway and then swap front spocket to 13 when I go off road....

kiwi5 screwed with this post 08-27-2013 at 01:10 PM
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Old 08-27-2013, 01:17 PM   #6093
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Originally Posted by kiwi5 View Post
Anyone have a 13/42 or 14/45 sprocket set up? My question is whether this set up allows for highway cruising at around 90kph without stressing the motor. I've got some great rides over here in the North Island of NZ, but some are as far away as 3 hours so I do need to be able to cruise at around 90kph. Alternatively, I might go with a 14/44 set up for the highway and then swap front spocket to 13 when I go off road....
I have 13/42's and can cruise at 65-70 mph .... tops out at 80 mph.
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Old 08-27-2013, 03:55 PM   #6094
kiwi5
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I have 13/42's and can cruise at 65-70 mph .... tops out at 80 mph.
Is that with a speedo corrected or GPS verification? This is sounding promising. Does the 13.42 set up improve bogging in 2nd gear?
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Old 08-27-2013, 06:03 PM   #6095
Auto-X Fil
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13/42 is buzzy at 70mph per the GPS, but not going to hurt anything. 60-65mph is great.

It really improves the low end. If you care more about dirt performance than highway, it's a great setup.
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Old 08-27-2013, 06:08 PM   #6096
kiwi5
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That's it then- I'm going to go with a 14/45 set up asap. I will keep a 13t handy if the ride is looking tough. I have read that a 13t sprocket will increase wear on the chain/front sprocket, but by how much? So I'll play it safe and go back to the 14. Now....how many extra links am I going to need? I have access to a OEM CRF250L chain so I can get extra links, now I just need to get two master links....
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Old 08-27-2013, 06:21 PM   #6097
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Originally Posted by kiwi5 View Post
Is that with a speedo corrected or GPS verification? This is sounding promising. Does the 13.42 set up improve bogging in 2nd gear?
I have a properly calibrated speedoDRD. I also agree a little with your comments on a 14 .... my next set will be 14/48
I do not use my bike for commuting so If I can cruise at 60 that's fast enough for me.
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Old 08-28-2013, 01:04 AM   #6098
kiwi5
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I have a properly calibrated speedoDRD. I also agree a little with your comments on a 14 .... my next set will be 14/48
I do not use my bike for commuting so If I can cruise at 60 that's fast enough for me.
We have a CRF250 L at work that is set up with 13/48 sprockets; man this bike is insane! I have climbed wet muddy/grassy hills that I would never try with our other work bikes (crf230L's). VERY buzzy on road, I think I will swap out the 13 front sprocket (on our work bike) for the oem 14 and see how that goes on the road...hmmm...ahh yes, the eternal sprocket set up question. Almost as exiting as the "what oil do I use..." !! Well, at least I get exited about the whole sprocket thang. Not so much for the oil thang anymore....As long as my personal CRF250L can cruise at 90KPH and handle the occasional car passing speeds of up to 110kph, then I will go with the gruntiest sprocket set up possible. I am not blessed with a trailer (or vehicle to tow the trailer) so I have to ride to my adventure sites!
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Old 08-28-2013, 03:44 AM   #6099
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Originally Posted by kiwi5 View Post
That's it then- I'm going to go with a 14/45 set up asap. I will keep a 13t handy if the ride is looking tough. I have read that a 13t sprocket will increase wear on the chain/front sprocket, but by how much? So I'll play it safe and go back to the 14. Now....how many extra links am I going to need? I have access to a OEM CRF250L chain so I can get extra links, now I just need to get two master links....
Just one extra link. For every 4 teeth you add to the sprocket combo, you need to add one full link to the chain.
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Old 08-28-2013, 10:06 AM   #6100
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Originally Posted by Auto-X Fil View Post
Just one extra link. For every 4 teeth you add to the sprocket combo, you need to add one full link to the chain.
That assumes the same size rear tire. Often the rear tire is changed in conjunction with the rear sprocket. I went from 100 to 106 links when I changed the rear sprocket from 39 to 48 teeth, and, changed the rear tire to a Dunlop 606 120/90 from the previous Pirelli 21 120/80.

That was on a CRF230L; your mileage may vary.

To be safe, I bought a 120 link chain and cut it down once I found what I needed. With another master link I used 5 more links to turn my old chain into an emergency spare chain for the new configuration.
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Old 08-28-2013, 10:31 AM   #6101
gnath9
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That assumes the same size rear tire. Often the rear tire is changed in conjunction with the rear sprocket. I went from 100 to 106 links when I changed the rear sprocket from 39 to 48 teeth, and, changed the rear tire to a Dunlop 606 120/90 from the previous Pirelli 21 120/80.

That was on a CRF230L; your mileage may vary.

To be safe, I bought a 120 link chain and cut it down once I found what I needed. With another master link I used 5 more links to turn my old chain into an emergency spare chain for the new configuration.
Well this explains why some people say you can put 13/43's on with the stock chain.
I put on 13/42's and I know I could not have gone with a 43 but, I also put on a IRC TR8 Battle Rally 4.50x18 tire on there wich is a lot bigger than stock. Next time I will get either 4.00x18 or 100/100-18.
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Old 08-28-2013, 12:35 PM   #6102
Auto-X Fil
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Originally Posted by jsonder View Post
That assumes the same size rear tire. Often the rear tire is changed in conjunction with the rear sprocket. I went from 100 to 106 links when I changed the rear sprocket from 39 to 48 teeth, and, changed the rear tire to a Dunlop 606 120/90 from the previous Pirelli 21 120/80.

That was on a CRF230L; your mileage may vary.

To be safe, I bought a 120 link chain and cut it down once I found what I needed. With another master link I used 5 more links to turn my old chain into an emergency spare chain for the new configuration.

Right - 4 teeth per link is what you need to keep the axle at the same position. If you want to move the axle back to make room for a bigger tire, that'll require more links - and adjustment room in the slider mechanism, brake caliper, etc.
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Old 08-28-2013, 03:23 PM   #6103
Woody2627
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Quote:
Originally Posted by jsonder View Post
That assumes the same size rear tire. Often the rear tire is changed in conjunction with the rear sprocket. I went from 100 to 106 links when I changed the rear sprocket from 39 to 48 teeth, and, changed the rear tire to a Dunlop 606 120/90 from the previous Pirelli 21 120/80.

That was on a CRF230L; your mileage may vary.

To be safe, I bought a 120 link chain and cut it down once I found what I needed. With another master link I used 5 more links to turn my old chain into an emergency spare chain for the new configuration.
:
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Old 08-28-2013, 04:00 PM   #6104
SAPB
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Pretty sure they are talking about the tire rubbing on the fender thing near the front of the swing arm, or the swing arm itself, confusing to me also. Gear swap brings the tire forward, unless you go with more chain, to bring it more to the rear. I could be wrong, not gone there yet.........
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Old 08-28-2013, 07:54 PM   #6105
jjustj
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small bikes(crf250l) on colorado back country discover routey

great write up

worth a read

http://advrider.com/forums/showpost....ostcount=149:D
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