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Author Topic: Chain and sprocket  (Read 653 times)

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Offline Sdsbassist

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  • Gus, Austin, MN.
Chain and sprocket
« on: February 25, 2016, 02:09:10 pm »
Anyone try a kit?

http://pages.ebay.com/motors/link/?nav=item.view&id=131515375170&alt=web

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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline flybox1

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Re: Chain and sprocket
« Reply #1 on: February 25, 2016, 02:17:29 pm »
Ive learned not to trust off-brands.
Stick with Sunstart or JTSprockets, and a known good chain (DID, EK, RK, Diamond, etc...)
Just dont know enough about longevity/wear/strength of those to be confident.
« Last Edit: February 25, 2016, 02:21:09 pm by flybox1 »
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline Sdsbassist

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Re: Chain and sprocket
« Reply #2 on: February 25, 2016, 05:06:37 pm »
I pulled mine and while dirty aren't stretched and sprockets appear in good shape. Is there a good way to tell if a chain is dead

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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline evanphi

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Re: Chain and sprocket
« Reply #3 on: February 25, 2016, 05:38:32 pm »
Quote from: MCRider on July 06, 2014, 04:45:03 pm

Test: Setup: On the centerstand, push up on the bottom row of chain, dead center. If the old chain on old sprockets, can be pulled away from the sprockets (at 3 Oclock on the rear sprocket) then need new chain. IF new chain on old sprockets can't be pulled away, then keep the old sprockets at lesat one more chain.

If new chain can be pulled away from old sprocket, time for sprockets.
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--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive

Offline MoMo

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Re: Chain and sprocket
« Reply #4 on: February 25, 2016, 05:54:51 pm »
Quote from: evanphi on February 25, 2016, 05:38:32 pm
Quote from: MCRider on July 06, 2014, 04:45:03 pm

Test: Setup: On the centerstand, push up on the bottom row of chain, dead center. If the old chain on old sprockets, can be pulled away from the sprockets (at 3 Oclock on the rear sprocket) then need new chain. IF new chain on old sprockets can't be pulled away, then keep the old sprockets at lesat one more chain.


That is the way I check.  You can usually have a set of sprockets last through  two chains if the chain is lubed.  If not the chain eats the sprocket

If new chain can be pulled away from old sprocket, time for sprockets.
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