1986 Bridgestone 450? Chain, cassette, hub questions
08-18-18, 02:58 PM
#1
junior
Thread Starter
Join Date: Oct 2012
Location: Fresno, Calif.
Posts: 282
Bikes: 2020 Surly ECR / 2018 Norco Search XR steel gravel bike with GRX / 1983 Bianchi Campione D'Italia / Gary Fisher Wingra / Motobecane Nomade mixte (daughter's)
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Liked 12 Times
in
11 Posts
1986 Bridgestone 450? Chain, cassette, hub questions
I just picked up a 1986 Bridgestone 450. Intending to replace the chain but keep the Shimano Z-012 "cassette," can i use a KMC Z33NP i have in my stash? It's rated for 5/6 speed. The Bridgestone is a 6-speed but has an early Shimano indexing downtube lever system (Shimano S 424 SIS, according to a brochure). Original spec chain is supposed to be a Shimano UG (Ultraglide, i assume).
Also, is this 14-28 "cassette" a freehub design? from what i've read, it should be so, due to the year.
And the hubs... the front has a "Sealed System" label, the rear does not. Are these easily serviced loose bearings? Is the "sealed" system simply a rubber dust cap on the end? the rear appears to be so.
Of course, I may figure all of this out once i start disassembling things but wanted to ask some questions here. Thanks for any info or tips you can offer. I have handlebar tape, new hoods for the Dia Compe brake levers coming, and plan to replace the brake cables and housing. I should get this rideable soon. The frame's white paint is marked up a bit, but overall the bike seems in decent shape.
Also, is this 14-28 "cassette" a freehub design? from what i've read, it should be so, due to the year.
And the hubs... the front has a "Sealed System" label, the rear does not. Are these easily serviced loose bearings? Is the "sealed" system simply a rubber dust cap on the end? the rear appears to be so.
Of course, I may figure all of this out once i start disassembling things but wanted to ask some questions here. Thanks for any info or tips you can offer. I have handlebar tape, new hoods for the Dia Compe brake levers coming, and plan to replace the brake cables and housing. I should get this rideable soon. The frame's white paint is marked up a bit, but overall the bike seems in decent shape.
08-18-18, 05:32 PM
#2
Senior Member
The z33 chain is not designed for index shifting. Get a KMC Z51, or a Sram PC 830, it will shift better. If you have, or know someone that has Amazon Prime account, the PC 830 is $10 shipped.
If the wheels are original to the bike it should be a threaded freewheel, not a cassette. There were 6 speed cassettes, but the only one I remember seeing was Dura Ace.
Yes, a "sealed system" hub is usually a rubber seal with regular bearings.
Nice bike!
The catalog says they're Sansin sealed mechanism hubs, those might be cartridge bearings.
If the wheels are original to the bike it should be a threaded freewheel, not a cassette. There were 6 speed cassettes, but the only one I remember seeing was Dura Ace.
Yes, a "sealed system" hub is usually a rubber seal with regular bearings.
Nice bike!
The catalog says they're Sansin sealed mechanism hubs, those might be cartridge bearings.
Last edited by brian3069; 08-18-18 at 06:11 PM.
08-19-18, 01:42 PM
#3
junior
Thread Starter
Join Date: Oct 2012
Location: Fresno, Calif.
Posts: 282
Bikes: 2020 Surly ECR / 2018 Norco Search XR steel gravel bike with GRX / 1983 Bianchi Campione D'Italia / Gary Fisher Wingra / Motobecane Nomade mixte (daughter's)
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Liked 12 Times
in
11 Posts
The z33 chain is not designed for index shifting. Get a KMC Z51, or a Sram PC 830, it will shift better. If you have, or know someone that has Amazon Prime account, the PC 830 is $10 shipped.
If the wheels are original to the bike it should be a threaded freewheel, not a cassette. There were 6 speed cassettes, but the only one I remember seeing was Dura Ace.
Yes, a "sealed system" hub is usually a rubber seal with regular bearings.
Nice bike!
The catalog says they're Sansin sealed mechanism hubs, those might be cartridge bearings.
If the wheels are original to the bike it should be a threaded freewheel, not a cassette. There were 6 speed cassettes, but the only one I remember seeing was Dura Ace.
Yes, a "sealed system" hub is usually a rubber seal with regular bearings.
Nice bike!
The catalog says they're Sansin sealed mechanism hubs, those might be cartridge bearings.
Thanks! I actually have a SRAM PC 830 in my stash, bought years ago, forgot-about, and never used. lol
