- Posts: 341
- Thank you received: 16
How Much Better are Dual Front Discs vs. Single?
- WABBMW
- Topic Author
- Offline
- User
- Let The Good Times Roll !
I hesitate to go to all the trouble and expense, plus adding the weight of another disc and caliper unless the results are significant. I know that Dual discs on a KZ will not stop like a modern sport bike, but how much difference will it make?
Thanks for the input.
Bill Baker
Houston, Texas
1982 KZ650 CSR
2008 Yamaha FZ1
2006 Yamaha FZ1
1977 Honda Supersport 750 four (sold)
1984 Honda Nighthawk 650 (sold)
Please Log in or Create an account to join the conversation.
- bountyhunter
- Offline
- User
- Posts: 7246
- Thank you received: 337
1979 KZ-750 Twin
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- racer54
- Offline
- Sustaining Member
- Posts: 1903
- Thank you received: 114
1980 LTD (changed over the years), 1979 LTD (being rebuilt), 1977 KZ turbo and various KZ's in various states of build. KLX110
Please Log in or Create an account to join the conversation.
- arai59
- Offline
- Banned
- Posts: 828
- Thank you received: 1
Please Log in or Create an account to join the conversation.
- roy-b-boy-b
- Offline
- User
- Posts: 3255
- Thank you received: 103
Thanks for the input.[/quote]
A Lot!!
You wouldn't believe it.
All the diffrence in the world. Roy:ohmy:
1979 LTD Street Fighter.1977 KZ1000
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- Jeff.Saunders
- Offline
- Vendor
This can result in much more shock coming up to the bars - changing out fork springs or going with slightly heavier weight fork oil can help.
On a bike like the Z1, I don't like double disks - I've run them, and removed them - just too much weight. Yes, you do get slightly more braking force, but you are still at the mercy of the tire...
The Z1, KZ900 and 77 KZ1000A used 7mm thick rotors. This progressed to drilled rotors, then 4.5mm drilled rotors on late 70's KZ's with double disks.
www.z1enterprises.com
Z1 Ent on Facebook,
Please Log in or Create an account to join the conversation.
- The Gringo
- Offline
- User
- ¡Usted no necesita otra motocicleta!
- Posts: 1770
- Thank you received: 11
Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special
Please Log in or Create an account to join the conversation.
- bountyhunter
- Offline
- User
- Posts: 7246
- Thank you received: 337
Had the single front disc brake on my Z1 for years and thought the brakes were fine. Had to squeeze harder then I wanted too but they stopped me in good fashion. Bought me a 1980 LTD with dual disc front brakes. Every time I would use the brakes, I kept hearing a squealing sound. /// one day after using the front brakes and hearing the squeal, I happened to look back. All this time, the dual brakes weren't squealing...the brakes were so good I was actually sliding the front tire and leaving black marks.
That's the point I was making: the single disc can stop the wheel dead and so the maximum braking is limited by the traction of the front tire. How is it any different if two discs are locking the wheel or one?
It may be true that duals would give a specific amount of stopping action for less pressure applied to the brake lever. But, if I can lock the wheel with a medium pull, why would I care at what pressure my normal braking action is?
1979 KZ-750 Twin
Please Log in or Create an account to join the conversation.
- 650ed
- Offline
- User
- Posts: 15344
- Thank you received: 2829
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Please Log in or Create an account to join the conversation.
- roy-b-boy-b
- Offline
- User
- Posts: 3255
- Thank you received: 103
The bike i got now i use four fingers and the rear brakes and it is a lot of effort to get the thing stopped. Roy
1979 LTD Street Fighter.1977 KZ1000
Please Log in or Create an account to join the conversation.