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Old Jun 10, 2021 | 11:57 AM
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Default Chain Conversion

Looking to switch from belt to chain, not sure about what sprockets I should get and wanted other peoples input. I have a 16 FXDLS. Not trying to do wheelies, I want to increase my highway speed but also have a increase in torque in the lower gears. What sprocket ratio is best?
 
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Old Jun 10, 2021 | 12:03 PM
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Originally Posted by jjsauter
Looking to switch from belt to chain, not sure about what sprockets I should get and wanted other peoples input. I have a 16 FXDLS. Not trying to do wheelies, I want to increase my highway speed but also have a increase in torque in the lower gears. What sprocket ratio is best?
Your two objectives (increased highway speed and increased lower end torque) are in direct contradiction of each other.

Increased highway speed means a smaller sprocket in the back. Increased torque means a bigger sprocket in the back.
 
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Old Jun 10, 2021 | 12:11 PM
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Alright so I want to increase my highway speed, what ratio would you suggest?
 
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Old Jun 10, 2021 | 12:12 PM
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As well, you can change ratios with going to chain. Curious why you want to go to chain, when the belt drive can handle most any build.
 
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Old Jun 10, 2021 | 12:26 PM
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Originally Posted by TriGeezer
As well, you can change ratios with going to chain. Curious why you want to go to chain, when the belt drive can handle most any build.
I just want to increase my highway speeds I’m at like 3 rpm going 70mph
 
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Old Jun 10, 2021 | 12:32 PM
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They have everything you will need.

https://trackerdie.com/products/06-u...conversion-kit
 
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Old Jun 10, 2021 | 12:35 PM
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Originally Posted by jjsauter
I just want to increase my highway speeds I’m at like 3 rpm going 70mph
^^^ Well, that has nothing to do with going to chain. If what you are trying to do is reduce the RPMS per MPH. You can put on a larger transmission sprocket…but that will reduce the RPM/MPH in all gears. And reduce your low gear torque. If you have major coin, you could have Baker cut a custom top gear set, so that only top gear was affected.

But, realistically. 3,000 at 70 mph, isn’t bad. So, that would mean 3,428 at 80 MPH…and that’s well within the comfort of the motor. Now, if you can’t get the bike over 70, then something is wrong with the motor.

FWIW…my TriGkide had the smaller transmission sprocket for low end torque. So, consequently the motor ran about 8% faster as RPM/Mph across the range. I had sever times, when I cruised at 4,000 RPM in desert heat…with no issues. Just turn up the stereo and it won’t bother you.
 

Last edited by TriGeezer; Jun 10, 2021 at 12:39 PM.
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Old Jun 10, 2021 | 12:40 PM
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Note that no matter what gearing you go, power is limiting factor. However, a chain does use up less HP. But not much less. 3000 at 70 is cool.

Interesting enough, a cog belt is more efficient then gear.

But a chain is a mess that needs adjusting and lubrication. And on concrete grooved interstates, the sprockets and chain are short lived.

These bikes are cruisers.
 

Last edited by Jackie Paper; Jun 10, 2021 at 12:45 PM.
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Old Jun 10, 2021 | 01:11 PM
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Sounds to me like you need an overdrive transmission to accomplish your goals. I can confidently recommend Baker. I installed a DD6 into Reaper, which gives me the factory standard 1 - 5 gears + a 6th gear with a .86:1 overdrive. At 75 mph, the engine is turning around 2800 RPM. 3000 RPM gets me to 80 mph, and at 85 mph, she's spinning around 3200 RPM.

They make a DD7 for your application: https://bakerdrivetrain.com/collecti...d-builders-kit

Cheers!
 
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Old Jun 10, 2021 | 01:58 PM
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I don't understand why anyone would want to go to a chain when a simple sprocket swap would accomplish the goal. Chains are messy and require adjustment about every 1000 miles give or take. Not to mention it will probably cost more than a sprocket swap.
I guess if a person was building a drag bike with huge cubic inches and serious horsepower a chain would be the ticket, but for a street bike a belt is more than capable.

Now if you're going to a chain just because you like the appearance and think it looks cool, then that's a different story.
 
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