Author Topic: 2013 Empulse Sprockets  (Read 513 times)

FreepZ

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2013 Empulse Sprockets
« on: September 19, 2016, 05:15:25 PM »
Has anybody has to change the sprockets on their Empulse?

Somehow, my rear sprocket has lost a number to teeth! I would like to replace it, along with the chain, and while I'm at it, I would also like to replace the front sprocket. I got these part numbers from Brammo:

  • Front: PINION FOR CHAIN 520 14T B24564736
  • Rear: 2013, 14, 14.5 SPROCKET, 38T, 520 B23218357
(the B at the front of the part number denotes “Brammo” for Victory Dealer to reference)

I also got a list of dealerships to call, but so far, they have pretty much all said that they (Victory) don't stock parts for old Brammo bikes. The only stock parts from 2016 Victory Empulse bikes.

This website looks like it can supply the (some) parts for the 2016 Vicotry Empulse, but they don't appear to have the front sprocket in stock:
http://www.polarispartspitstop.com/oemparts/a/vic/5678f88787a86611bc5d1603/final-drive-chain-and-sprockets
I don't even know if the 2016 sprockets will fit a 2013 bike.

There was a discussion a while back about what front sprocket would best fit an Empulse, but I didn't see a final word as to how well the replacement fit the bike.

Does anybody know what will fit a 2013 Empulse?
Richard #935 #595 #44

FreepZ

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Re: 2013 Empulse Sprockets
« Reply #1 on: September 20, 2016, 11:46:02 AM »
Speaking with a representative from Brammo (Kurt Beckman), I learned that the sprockets for the 2016 (Victory) Empulse are compatible with the sprockets for the 2013 (Brammo) Empulse.

Quote
Yes the sprockets should work regardless if the bike is a 2013 or 2016 as far as fitment goes. Tooth count is 38T for rear on both and bolt pattern and center hole is the same. If you wanted to change gearing the rear is a common 5 bolt by 100mm I believe. I do not know of a front sprocket cross-over that would work but this is also the same sprocket from 2013-2016.
 
Rear sprocket part number for 2016:
1333568 1 SPROCKET, 38T, 520
B24564736 1 PINION FOR CHAIN 520 14T

I'm going to buy a set and hopefully the replacement will proceed without any problems.
:P
Richard #935 #595 #44

Shinysideup

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Re: 2013 Empulse Sprockets
« Reply #2 on: September 20, 2016, 02:23:55 PM »
Glad to learn Victory can supply the front sprocket.

Several of us have increased the size of the rear sprocket, some for quicker acceleration. I did it to keep the RPM's a little higher while on the job in San Francisco's traffic/hills. Here's what I ordered from www.sprocketcenter.com:

SUPERLITE FUJI LOCKING DUCATI CUSH DRIVE FLANGE NUTS - M10 size - 6PK   SKU: SL-FUJI10CD   
SUPERLITE (#92611L) 520 Black Heat Treated Steel Rear Sprocket  42T  SKU: SL92611L-42

This reduced my top speed to around 90 mph and makes 6th gear more useful on the highway. I like the increased regenerative braking. Acceleration in 1st gear, Sport Mode, seems to right at the power-wheelie threshold.

Based on my experience, I'd highly recommend you consider a chain oiler. The Tutoro oiler is fairly reasonable in price and should double the life of your chain and sprockets. I'll never go back to spray-on gunky stuff.

https://www.tutorochainoiler.com/collections/all/automatic-motorcycle-chain-oiler

I ended up replacing the plastic delivery tips with copper tubing soldered into a brass T-fitting, just  because it seemed more sturdy. And I like copper!


on2wheels

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Re: 2013 Empulse Sprockets
« Reply #3 on: November 03, 2016, 05:34:28 PM »
I'm in the process of making the 42T conversion myself. The link to the Sprocket Center part lookup didn't work so I called. They've replaced it so it has a new part number (#92611R)

Here's a link: http://sprocketcenter.com/catalogsearch/result/?q=92611r

Does anyone have a part number for an aftermarket from sprocket or is Polaris the only choice?


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FreepZ

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Re: 2013 Empulse Sprockets
« Reply #4 on: November 18, 2016, 11:13:18 AM »
After quite a bit of back and forth, it turned out that while I was able to get a rear sprocket from a Victory dealership, they were not able to get me a front sprocket. I ended up getting one after asking nicely to a Brammo representative directly. They are not in the business of retail, so we had to get a bit creative in how I could buy the sprocket from them.

Something that I found a bit surprising is that the lady at the Victory dealership said that she was not able to get any response from Brammo about the front sprocket. I don't know who she was in contact with, or what she did to try to reach out to them. I hope things improve in the future.

Changing the sprocket set is actually quite easy! The most difficult part was removing the back wheel, since the axle rod is difficult to remove. (Hint, you need some kind of rod to push out the axle.) The front sprocket is held on to the motor with a C-clip. One tricky part of this process was knowing the torque to use for the bolts on the rear sprocket. Happily, this information is provided in the draft version of the manual that I got with the bike. I don't think that it's in the new version of the manual, so I don't know how anybody else has figured that out.

(If anybody wants it, I can send them a picture of those pages of Torque information.)
Richard #935 #595 #44

kingcharles

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Re: 2013 Empulse Sprockets
« Reply #5 on: November 18, 2016, 05:58:31 PM »
After quite a bit of back and forth, it turned out that while I was able to get a rear sprocket from a Victory dealership, they were not able to get me a front sprocket. I ended up getting one after asking nicely to a Brammo representative directly. They are not in the business of retail, so we had to get a bit creative in how I could buy the sprocket from them.

Something that I found a bit surprising is that the lady at the Victory dealership said that she was not able to get any response from Brammo about the front sprocket. I don't know who she was in contact with, or what she did to try to reach out to them. I hope things improve in the future.

Changing the sprocket set is actually quite easy! The most difficult part was removing the back wheel, since the axle rod is difficult to remove. (Hint, you need some kind of rod to push out the axle.) The front sprocket is held on to the motor with a C-clip. One tricky part of this process was knowing the torque to use for the bolts on the rear sprocket. Happily, this information is provided in the draft version of the manual that I got with the bike. I don't think that it's in the new version of the manual, so I don't know how anybody else has figured that out.

(If anybody wants it, I can send them a picture of those pages of Torque information.)
Any details on the front sprocket that could help the search for an aftermarket version?
Once you go EV, gas is history!

FreepZ

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Re: 2013 Empulse Sprockets
« Reply #6 on: November 19, 2016, 09:34:52 AM »
I finally got around to scanning and processing the table to torque specifications that were listed in the manual. (I hope I'm not violating any copyrights by publishing them!)

Here's a link to the data:

https://docs.google.com/spreadsheets/d/1J0hJZJm1QIRS6ItCFKH_GGsnU3r6CwPQoPI_Rdc4HWM/edit?usp=sharing

Note that these values come from the Provisional manual for the 2013 Empulse R. Some of the values are going to be obsolete (e.g. for the Tail Assembly, which was replaced after the recall).

Please feel free to add comments if you can figure out what some of those cryptic codes mean.
Richard #935 #595 #44

tkthompson

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Re: 2013 Empulse Sprockets
« Reply #7 on: December 19, 2016, 07:44:32 PM »
I also need to replace my chain and sprockets. Has anyone found a place to buy the front sprocket, or a compatible replacement?