NicholasDM 
Contributing Member
 
Offline
Bike: Nighthawk
Posts: 126
Join Date: Dec, 2010
|
 |
« on: December 05, 2010, 12:09:50 PM » |
|
This is an '86 CB700SC with an '84 engine in it and I'm wondering if the drivetrain lash that I'm seeing is excessive. The previous owner wasn't kind to this engine or the original and with as much free play as I'm seeing in the rear end here it makes it hard(er) to take it through corners in lower gears. Could someone take a look and give me their opinion? Thanks!
|
|
|
|
|
Logged
|
|
|
|
Munkey
Senior Member
   
Offline
Gender: 
Age: 50
Location: Paducah, KY
Bike: 1985 CB700SC Nighthawk S
Posts: 1930
Join Date: Jul, 2009
|
 |
« Reply #1 on: December 05, 2010, 12:14:07 PM » |
|
Looks about normal to me.
|
|
|
|
|
Logged
|
1985 CB700SC Nighthawk
|
|
|
skramer360
--- NHF---
Offline
Gender: 
Age: 43
Location: Bloomington, In
Bike: 1985 cb700sc. The "s"
Posts: 1961
Join Date: Aug, 2008
Life is short. Eat dessert first.
|
 |
« Reply #2 on: December 05, 2010, 02:39:36 PM » |
|
Looks about normal to me.
+1, I went and checked mine and it has almost identical movement.
|
|
|
|
|
Logged
|
I'd rather be riding my blue '85 (700s) Steve
|
|
|
n5tbu
Dedicated Member
  
Offline
Gender: 
Age: 53
Location: Opelousas,Louisiana
Posts: 745
Join Date: Mar, 2008
|
 |
« Reply #3 on: December 05, 2010, 03:31:46 PM » |
|
Looks normal to me.
|
|
|
|
|
Logged
|
2003 750NH,red 1996 750NH,Ole Yella 2008 CRF230L,featherweight
|
|
|
BAMBY
Contributing Member
 
Offline
Gender: 
Age: 19
Location: Naperville, IL
Bike: 1984 CB700SC NIGHTHAWK S
Posts: 149
Join Date: Jul, 2010
|
 |
« Reply #4 on: December 05, 2010, 08:44:54 PM » |
|
Exact same as my 84 has in terms of driveline lash... i think all of em are that way...
On a side note, NicholasDM: When you bought your progressive shocks, did they come with the actual springs? or did you have to order the springs separate? How did you get the 2 separate springs with different rates (blue/black springs) on each shock like that? dont mean to thread jack, pm me if ya like...
|
|
|
|
|
Logged
|
|
|
|
Option13
Senior Member
   
Offline
Gender: 
Location: Richmond, VA
Bike: 1984 CB650 Nighthawk
Posts: 3246
Join Date: Jun, 2010
|
 |
« Reply #5 on: December 05, 2010, 09:36:43 PM » |
|
Ohh, what kind of shocks?
Yeah, the lash is about normal.
|
|
|
|
|
Logged
|
'84 650 - "Naia" | DDM HID | 700S Rotors | SS Brake Lines
|
|
|
|
fishmeister
Guest
|
 |
« Reply #6 on: December 05, 2010, 10:59:52 PM » |
|
You can actually check it with a dial caliper through the gear lube hole. Directly on the tooth.
Backlash at assembly should be .003-.007 Service limit is .027
If it's over that the ring gear spacer will require a grind.
|
|
|
|
|
Logged
|
|
|
|
NicholasDM 
Contributing Member
 
Offline
Bike: Nighthawk
Posts: 126
Join Date: Dec, 2010
|
 |
« Reply #7 on: December 07, 2010, 08:11:52 AM » |
|
Looks about normal to me.
Thanks.
|
|
|
|
|
Logged
|
|
|
|
NicholasDM 
Contributing Member
 
Offline
Bike: Nighthawk
Posts: 126
Join Date: Dec, 2010
|
 |
« Reply #8 on: December 07, 2010, 08:13:03 AM » |
|
Exact same as my 84 has in terms of driveline lash... i think all of em are that way...
On a side note, NicholasDM: When you bought your progressive shocks, did they come with the actual springs? or did you have to order the springs separate? How did you get the 2 separate springs with different rates (blue/black springs) on each shock like that? dont mean to thread jack, pm me if ya like...
The rear shocks came with the bike unfortunately so I don't know much about how they come "stock" when you buy a new set.
|
|
|
|
|
Logged
|
|
|
|
NicholasDM 
Contributing Member
 
Offline
Bike: Nighthawk
Posts: 126
Join Date: Dec, 2010
|
 |
« Reply #9 on: December 07, 2010, 08:13:51 AM » |
|
Ohh, what kind of shocks?
Yeah, the lash is about normal.
Progressive shocks. Not sure what model though. They came with the bike.
|
|
|
|
|
Logged
|
|
|
|
NicholasDM 
Contributing Member
 
Offline
Bike: Nighthawk
Posts: 126
Join Date: Dec, 2010
|
 |
« Reply #10 on: December 07, 2010, 08:15:12 AM » |
|
You can actually check it with a dial caliper through the gear lube hole. Directly on the tooth.
Backlash at assembly should be .003-.007 Service limit is .027
If it's over that the ring gear spacer will require a grind.
I may break out my caliper and try that, but everyone says it's about normal so it looks like it's something I'll have to get used to.
|
|
|
|
|
Logged
|
|
|
|
BAMBY
Contributing Member
 
Offline
Gender: 
Age: 19
Location: Naperville, IL
Bike: 1984 CB700SC NIGHTHAWK S
Posts: 149
Join Date: Jul, 2010
|
 |
« Reply #11 on: December 10, 2010, 06:03:20 AM » |
|
I think the key here, is to keep the rear wheel under power  that way, there are no worries about lash... hehehe
|
|
|
|
|
Logged
|
|
|
|
|