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  1. #1
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    Default 2020/21 redesigned front drive sprocket

    I won't replace it till the beginning of March so I don't have anything to compare it to. But this is the redesigned one hope it's quieter!
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  2. #2
    Very Active Member RICZ's Avatar
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    Not having anything to compare it with...what's different about it? Will it retrofit all 1330s? Got a part number?
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
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  3. #3
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    the part number is stamped into it with date pic 2

  4. #4
    Active Member ButterSmooth's Avatar
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    /*humor on*/ That's a new special coating that sheds red dust... /*humor off*/
    Head in the game, eyes down the road... 2020RT
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  5. #5
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    Don't know what's different was redesigned to get rid of the whirring humming whistling noise

  6. #6
    Very Active Member RICZ's Avatar
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    Did I read that part number correctly? 105563244?
    Anyone know if it retrofits all 1330s?
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
    2017 F3 Limited , Red, Black & Chrome

  7. #7
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    Default

    705503244

  8. #8
    Active Member Snoking1127's Avatar
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    Well BRP parts catalog for 2021s built after Sept 2020 list part number 705503239 and before that date part number 705502134. So is the 705503244 a third version of the part?
    2018 RT Limited Chrome - Champagne Metallic - East Valley of Phoenix

    Magic Mirrors, 360 LED head lights, dual USB with volt meter, GPS, phone and drink holders, Front tires = Formoza's, BajaRon sway bar, dash cam, foam grips, 7 Jurock WS, Ikea sheep skin, HW pegs, third brake light 4 LED strobe and driver back rest.

  9. #9
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    Default

    This is what I ordered but you see what came
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  10. #10
    Very Active Member JayBros's Avatar
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    To my eye, and it's difficult to be certain because there is no common scale with either of the two sprockets, it appears the holes may be larger and there is obviously no raised ring on the inner circumference of the flange on the 10/20 sprocket. Larger holes probably would reduce the tone of any whistling (think flute or penny whistle notes). Just a WAG on my part. The date on the 705503244 is obviously later than the Sept 20 date mentioned in the parts catalog and I thought the "new" '21s were supposed to begin production in Jan '21. Ergo a part with a 10/20 manufacture date would be available for 1/21 production. Another WAG.
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  11. #11
    Active Member Snoking1127's Avatar
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    Quote Originally Posted by JayBros View Post
    To my eye, and it's difficult to be certain because there is no common scale with either of the two sprockets, it appears the holes may be larger and there is obviously no raised ring on the inner circumference of the flange on the 10/20 sprocket. Larger holes probably would reduce the tone of any whistling (think flute or penny whistle notes). Just a WAG on my part. The date on the 705503244 is obviously later than the Sept 20 date mentioned in the parts catalog and I thought the "new" '21s were supposed to begin production in Jan '21. Ergo a part with a 10/20 manufacture date would be available for 1/21 production. Another WAG.
    I think OP's pictures are of the back and front side of the same sprocket?
    2018 RT Limited Chrome - Champagne Metallic - East Valley of Phoenix

    Magic Mirrors, 360 LED head lights, dual USB with volt meter, GPS, phone and drink holders, Front tires = Formoza's, BajaRon sway bar, dash cam, foam grips, 7 Jurock WS, Ikea sheep skin, HW pegs, third brake light 4 LED strobe and driver back rest.

  12. #12
    Very Active Member JayBros's Avatar
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    Very valid point, particularly noting the wrinkles in the bolt bag. Question then would be what do the new and old ones look like side by side.
    Artillery lends dignity to what would
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  13. #13
    Very Active Member RICZ's Avatar
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    Yes, photos with the new and old pulleys side by side would be very helpful. Hint, hint.
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
    2017 F3 Limited , Red, Black & Chrome

  14. #14
    Very Active Member PW2013STL's Avatar
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    I have the same sprocket to put on my wife's 2018 F3 tomorrow. I will take a picture of the new and old sprocket side by side. The only thing I noticed was that the new one is painted, but I did not measure the hole sizes. The new one does have made in the USA printed on it. I will need to look to see if the old one has that as well.
    Last edited by Peter Aawen; 01-24-2021 at 02:49 AM. Reason: Sp
    2018 F3L, 2020 RTL

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  15. #15
    Very Active Member PW2013STL's Avatar
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    Side by side pictures.
    Holes are the same size. Looks like the flange to sprocket hub is slopped compared to the old one.
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    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
    but our benefits don't?
    2015 F3S , White & Blue

  16. #16
    Very Active Member RICZ's Avatar
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    Thanks for the photos. Am I wrong, or is the new one larger?
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
    2017 F3 Limited , Red, Black & Chrome

  17. #17
    Very Active Member BLUEKNIGHT911's Avatar
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    Quote Originally Posted by PW2013STL View Post
    Side by side pictures.
    Holes are the same size. Looks like the flange to sprocket hub is slopped compared to the old one.
    " SLOPPED " ...?????? Thanks .... Mike

  18. #18
    Very Active Member PW2013STL's Avatar
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    Quote Originally Posted by RICZ View Post
    Thanks for the photos. Am I wrong, or is the new one larger?
    Same size. The clean painted surface gives the illusion it's larger.
    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
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    2015 F3S , White & Blue

  19. #19
    Active Member Snoking1127's Avatar
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    Quote Originally Posted by PW2013STL View Post
    Side by side pictures.
    Holes are the same size. Looks like the flange to sprocket hub is slopped compared to the old one.
    I assume that in the third picture the old one is turn 180 degrees? Are the splined hubs the same length or is the new one wider?
    2018 RT Limited Chrome - Champagne Metallic - East Valley of Phoenix

    Magic Mirrors, 360 LED head lights, dual USB with volt meter, GPS, phone and drink holders, Front tires = Formoza's, BajaRon sway bar, dash cam, foam grips, 7 Jurock WS, Ikea sheep skin, HW pegs, third brake light 4 LED strobe and driver back rest.

  20. #20
    Very Active Member PW2013STL's Avatar
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    Quote Originally Posted by BLUEKNIGHT911 View Post
    " SLOPPED " ...?????? Thanks .... Mike
    One to many beers so I got 2 p's��
    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
    but our benefits don't?
    2015 F3S , White & Blue

  21. #21
    Very Active Member PW2013STL's Avatar
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    Quote Originally Posted by Snoking1127 View Post
    I assume that in the third picture the old one is turn 180 degrees? Are the splined hubs the same length or is the new one wider?
    Correct!
    They are the same.
    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
    but our benefits don't?
    2015 F3S , White & Blue

  22. #22
    Active Member ButterSmooth's Avatar
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    When's the whistle test? Did the spline fit feel the same?
    Head in the game, eyes down the road... 2020RT
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  23. #23
    Very Active Member PW2013STL's Avatar
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    Quote Originally Posted by ButterSmooth View Post
    When's the whistle test? Did the spline fit feel the same?
    The fit was good, but I don"t know if it"s better than a new old stock pulley. The weather was not the best for a ride. The spyder needs to get a bath frist as it has 3 months of dust and dirt covering it
    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
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  24. #24
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    Plenty of anti-sieze on the splines prior to assembly?
    Peggy and Howard

    Hers: 2013 Spyder ST-S SM5

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  25. #25
    Very Active Member PW2013STL's Avatar
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    Quote Originally Posted by Possible View Post
    Plenty of anti-sieze on the splines prior to assembly?
    I used moly paste. Honda 77 assembly lube. 60% moly.
    2018 F3L, 2020 RTL

    Isn't it weird that in AMERICA our flag and our culture offend so many people......
    but our benefits don't?
    2015 F3S , White & Blue

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