« previous next »
Pages: 1 ... 7 8 [9]   Go Down

Author Topic: Where's my 5th gear? SOLVED!!!  (Read 21218 times)

0 Members and 1 Guest are viewing this topic.

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 14,802
  • Northern Virginia
Re: Where's my 5th gear? SOLVED!!!
« Reply #200 on: May 15, 2015, 02:23:50 PM »
Quote from: flybox1 on May 15, 2015, 02:00:16 PM
A concave thrust washer(pictured above) holding the clutch basket must have been it.   I had the day off and went out for 100mi.  If I feather the clutch during my upshift to 5th, I can get it every time, and then it's off to the races.   Bike runs fantastic.
I'm happy with it as-is.  Thanks everyone for the input over the past year.

fly out...

Break out the bubbly!  Congratulations!
Logged
Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,301
Re: Where's my 5th gear? SOLVED!!!
« Reply #201 on: May 15, 2015, 02:49:38 PM »
Amen to that!
Logged
'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)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Duanob

  • Bold Timer
  • Old Timer
  • ******
  • Posts: 4,009
  • Gotcha!
Re: Where's my 5th gear? SOLVED!!!
« Reply #202 on: May 15, 2015, 03:37:27 PM »
Congrats Rob! Just in time for summer riding too  8)
Logged
"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,301
Re: Where's my 5th gear? SOLVED!!!
« Reply #203 on: May 15, 2015, 03:54:54 PM »
Quote from: Duanob on May 15, 2015, 03:37:27 PM
Congrats Rob! Just in time for summer riding too  8)
when you get back from HI-town  ;)
Logged
'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)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Bailgang

  • Scott
  • Old Timer
  • ******
  • Posts: 2,705
  • Indiana
Re: Where's my 5th gear? SOLVED!!!
« Reply #204 on: May 15, 2015, 04:51:28 PM »
Fantastic news!!
Logged
Scott


71 cb350 twin
77 cb750 F2
83 gl1100 Interstate

Offline mystic_1

  • Really Old Timer ...
  • *******
  • Posts: 6,071
  • 1970 CB750K
Re: Where's my 5th gear? SOLVED!!!
« Reply #205 on: May 15, 2015, 05:00:24 PM »
Nice!

From the sounds of it you may have been dealing with a compound problem.  When you put everything back together did you re-do all of the clutch adjustments from scratch?  I ask because your current symptoms could be caused by a too-tight or too-loose lifter adjustment (causing drag on the shafts when you're trying to shift).

Question:  now during failed shifts, any noises?

cheers
mystic_1



Logged
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,301
Re: Where's my 5th gear? SOLVED!!!
« Reply #206 on: May 15, 2015, 08:46:45 PM »
During failed shifts, there is no noise.  Nothing.  Not even gear chatter.....just the sound of my rpms going up ;D
The thing that baffles my mind...everything was within tolerances, measured good, and no blaring defects or installation issues that I could find.....except for that clutch thrust washer.
This clutch was only off the mainshaft when I installed it on the new main and countershafts.  Which, unless installed by the PO incorrectly, shouldn't have effected my last trans.

Oh well  ::)
Logged
'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)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline jodangler

  • Full Member
  • *
  • Posts: 16
Re: Where's my 5th gear? SOLVED!!!
« Reply #207 on: July 21, 2015, 06:20:36 PM »
Reading for my cb750k7 quota for the week, check. Now I need more riding time... Ok, I cant remember where in this post but someone mentioned they were able to pop fifth gear without using the lever, I'm curious if they figured out what was the problem.

So after reading this post yesterday I went to fiddled with the lever today to make sure I didn't tighten the lever to tight or have it to loose. Than went for a ride, while going through the the gears I still wasn't able to find fifth but can pop into fifth. I dont have a lot of throttle play, not enough for my taste but that might be just a personal thing. I'm wondering if it's time for new friction plates or can I still tweak around.
Logged
Pages: 1 ... 7 8 [9]   Go Up
« previous next »