Author Topic: Proper Tool or Hack it?  (Read 1513 times)

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Offline 34barab

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Proper Tool or Hack it?
« on: December 05, 2019, 07:52:47 PM »
I need to disassemble the rear cushions on a CB750K1.  I don't expect to be doing this on any more bikes.  So I would like to know if there is a safe method without using a spring compressor, or what type of proper spring compressor to buy.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Offline Pielz

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Re: Proper Tool or Hack it?
« Reply #1 on: December 05, 2019, 08:17:21 PM »
+1 was wondering about this too and couldn't find anything online. Wanted to paint just the spring.

Offline ekpent

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Re: Proper Tool or Hack it?
« Reply #2 on: December 05, 2019, 08:48:18 PM »
 I've used a bar clamp in the past to compress it enough to get the clip collars out.

Offline spotty

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Re: Proper Tool or Hack it?
« Reply #3 on: December 05, 2019, 09:19:15 PM »
i made my own shock compressor from two bits of wood and some threaded bar, if i can find it in the shed of doom i'll whack a pic up

maybe have a look on google for home made/redneck/ghetto spring compressor

its dead simple to do
i blame Terry

Offline Kelly E

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Re: Proper Tool or Hack it?
« Reply #4 on: December 05, 2019, 10:03:18 PM »
I just have my big fat buddy push down on the spring while I pop the collar out. Works great and only costs a couple of beers. 8)
Never Give Up - Never Surrender

The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
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1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
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Online Don R

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Re: Proper Tool or Hack it?
« Reply #5 on: December 05, 2019, 11:01:46 PM »
 This^ L0L!
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Little_Phil

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Re: Proper Tool or Hack it?
« Reply #6 on: December 06, 2019, 09:52:16 AM »
I managed to do my 500s with a couple of ratchet straps fixed either side of a vice. If shocks have chrome covers you have to tie the strap off on the spring and then wind spring so the strap goes up inside the covers slightly.

Offline kerryb

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Re: Proper Tool or Hack it?
« Reply #7 on: December 06, 2019, 10:30:02 AM »
yeah!! what he said.
But when my buddy arrives and we have a few, we wander off and do other stuff instead!

Here's mine, steel strap and threaded rod.  use the impact driver to turn the rod and tighten the nuts down.

crude, but effective and cheap.
intrigued by the wail...seduced by the scream.

Offline mattsz

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Re: Proper Tool or Hack it?
« Reply #8 on: December 07, 2019, 05:13:45 AM »
i made my own shock compressor from two bits of wood and some threaded bar, if i can find it in the shed of doom i'll whack a pic up

maybe have a look on google for home made/redneck/ghetto spring compressor

its dead simple to do

Same here.  Plenty of plywood scraps kicking around (no idea why that thumbnail is sideways!):
« Last Edit: December 07, 2019, 05:19:40 AM by mattsz »

Offline flatlander

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Re: Proper Tool or Hack it?
« Reply #9 on: December 07, 2019, 07:48:57 AM »
I just have my big fat buddy push down on the spring while I pop the collar out. Works great and only costs a couple of beers. 8)

that's it.
if you have no buddy, ask a random stranger as this really only takes less than a minute. and after, you may actually have buddy  ;D

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #10 on: December 07, 2019, 08:08:23 AM »
All very good and helpful ideas.  Not sure what direction at this point.

I’d like to rechrome the springs and the shields, but I don’t know if it’s possible with the condition of the springs.  I’ll research that on the forum to figure next step.  Meanwhile, if anyone knows of a good thread on this subject, please suggest.  Thanks again.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Online Kevin D

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Re: Proper Tool or Hack it?
« Reply #11 on: December 07, 2019, 11:30:27 AM »
Are you planning or riding this bike?

I had no trouble manually removing the spring keepers and then found that the dampers were totally shot. I got a pair of Hagons to improve the ride and handling from Dave Quinn, but he no longer in business. NobleHops, a member here, handles Ikon shocks.
71 CB750 K1
104,000 miles
Original Owner
———past———
70 SL100/125/150
70 Candy BlueGreen CB 750 K0
————————————————-
Former Honda parts kid/counter kid/do all
—————————————————————-
Whether you think you can or think you can’t, you’re right
Genius is 99% perspiration, 1% inspiration

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #12 on: December 07, 2019, 05:46:22 PM »
Are you planning or riding this bike?

I had no trouble manually removing the spring keepers and then found that the dampers were totally shot. I got a pair of Hagons to improve the ride and handling from Dave Quinn, but he no longer in business. NobleHops, a member here, handles Ikon shocks.

Haven't tried yet but I believe the bike is ready to ride as is.  I don't expect more than a couple hundred miles a year.  And I'd like to keep it as original as possible.  But thanks for the lead.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Online Kevin D

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Re: Proper Tool or Hack it?
« Reply #13 on: December 08, 2019, 05:34:49 AM »
Quote
original as possible

My goal too. But I like my modern tires, modern paint job, modern drive chain, modern brake line, working shocks. It was the performance of the rear shocks that got me to replace them. Here is a pic of the Hagons mounted. Chrome body, chrome spring, chrome cover. Cover is a bit shorter than the original. I don't know if the old covers can be made to fit. When you get the springs off, give those old shocks a workout.
71 CB750 K1
104,000 miles
Original Owner
———past———
70 SL100/125/150
70 Candy BlueGreen CB 750 K0
————————————————-
Former Honda parts kid/counter kid/do all
—————————————————————-
Whether you think you can or think you can’t, you’re right
Genius is 99% perspiration, 1% inspiration

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #14 on: December 08, 2019, 05:53:34 AM »
Quote
original as possible

My goal too. But I like my modern tires, modern paint job, modern drive chain, modern brake line, working shocks. It was the performance of the rear shocks that got me to replace them. Here is a pic of the Hagons mounted. Chrome body, chrome spring, chrome cover. Cover is a bit shorter than the original. I don't know if the old covers can be made to fit. When you get the springs off, give those old shocks a workout.

The shocks look good, the bike is a gem.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Offline Keith

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Re: Proper Tool or Hack it?
« Reply #15 on: December 08, 2019, 07:57:58 AM »
I made one also. 3/4 plywood and two threaded rods

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #16 on: December 08, 2019, 12:11:08 PM »
i made my own shock compressor from two bits of wood and some threaded bar, if i can find it in the shed of doom i'll whack a pic up

maybe have a look on google for home made/redneck/ghetto spring compressor

its dead simple to do

Same here.  Plenty of plywood scraps kicking around (no idea why that thumbnail is sideways!):

Looks like 1/8" bar and 3/8" allthread?  3/4" plywood?
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Offline spotty

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Re: Proper Tool or Hack it?
« Reply #17 on: December 08, 2019, 12:52:26 PM »
yep, looks just like that, works a treat
i blame Terry

Offline mattsz

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Re: Proper Tool or Hack it?
« Reply #18 on: December 09, 2019, 04:26:40 AM »
Looks like 1/8" bar and 3/8" allthread?  3/4" plywood?

Sounds about right - it was awhile ago!  The bar is probably overkill, but I didn't have any big washers, so I cut up an old unused 8-inch corner brace, kind of like this one (you can see the offset holes in the pic in my previous post):


Offline 1976cb750f836

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Re: Proper Tool or Hack it?
« Reply #19 on: December 09, 2019, 06:41:47 AM »
Go hagons, they actually work (much improved ride), stock honda shock junk in my opinion. And 40-50 year old, waste of time and $.

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #20 on: December 13, 2019, 04:27:03 PM »
Got the shocks off (removed the mufflers anyway for cleaning) and managed to muscle the spring retainers out.  Shock in the vise, pull down on the shock shield, pluck at the retainers.  I'm not strong, just determined.

Left shock still has some fluid damping, but right one is a pogo stick.  Can these be rebuilt?  NOS seems expensive at about $1000.  Reproductions about $250, but I wonder about the quality.  Haven't looked at the Hagons yet.  All feedback welcome.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Offline seanbarney41

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Re: Proper Tool or Hack it?
« Reply #21 on: December 13, 2019, 05:13:00 PM »
How do you intend to use the bike?  Shows? touring? sport riding? commuting? permanently parked in the living room?
If it works good, it looks good...

Offline 34barab

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Re: Proper Tool or Hack it?
« Reply #22 on: December 13, 2019, 06:27:38 PM »
No plans to show the bike, but I do lean toward original as much as possible.  Occasional use, no more than 200 miles a year, easy local roads and some highway.  Might try a longer trip one day.
Current Projects: 1973 CB750K3; 1972 CB350K4; 1980 CX500D;1969 CB750.  Roadworthy: 1971 CB750K1

Offline seanbarney41

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Re: Proper Tool or Hack it?
« Reply #23 on: December 13, 2019, 09:57:10 PM »
I wouldn't worry about it too much for that small amount of use.
If it works good, it looks good...

Online Don R

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Re: Proper Tool or Hack it?
« Reply #24 on: December 14, 2019, 09:55:45 AM »
Check 4into1 and Z1 parts, contrary to popular belief, among at least one guy. Z1 also has Honda stuff.   
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.