Author Topic: Progressive suspension shock and fork springs install  (Read 13265 times)

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Offline andy750

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Re: Progressive suspension shock and fork springs install
« Reply #25 on: December 04, 2008, 10:34:10 AM »
Do ya think a pic of my bike in pieces will hurt my votes in the BOTM competition  ;) ?

A bike should be running before its accepted for BOTM  ;)

Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline MCRider

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Re: Progressive suspension shock and fork springs install
« Reply #26 on: December 04, 2008, 11:16:10 AM »
Maybe we could have BCOTM- Basket Case of the Month?  ;)
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Really?

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Re: Progressive suspension shock and fork springs install
« Reply #27 on: December 04, 2008, 11:43:31 AM »
Maybe we could have BCOTM- Basket Case of the Month?  ;)

That and PBOTM - Project Bike Of THe Month

Those might one in the same, lol.
I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

The Wife's Bike - 750K5
The Kid's Bike - 750K3

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #28 on: December 04, 2008, 01:34:17 PM »
Last week it woulda run circles around whatever yer rollin' (  ;) just sort of kidding, but it runs great  ;D ...)
And in about 2 weeks it will do it again, just better... It's winter here folks, time to spruce up the old girls for next riding season, plus she needs to be in show shape for early January where I will be showing her in a local bike show competition, AND I am going to ride her in and ride her home regardless of weather because she is allergic to trailers ;)


"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline A Grove

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Re: Progressive suspension shock and fork springs install
« Reply #29 on: December 04, 2008, 01:47:09 PM »
Last week it woulda run circles around whatever yer rollin' (  ;) just sort of kidding, but it runs great  ;D ...)
And in about 2 weeks it will do it again, just better... It's winter here folks, time to spruce up the old girls for next riding season, plus she needs to be in show shape for early January where I will be showing her in a local bike show competition, AND I am going to ride her in and ride her home regardless of weather because she is allergic to trailers ;)




Thats dangerous talk... I can see it now... 2+ feet of snow with freezing rain on the way :D

Offline Really?

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Re: Progressive suspension shock and fork springs install
« Reply #30 on: December 04, 2008, 02:00:51 PM »
Last week it woulda run circles around whatever yer rollin' (  ;) just sort of kidding, but it runs great  ;D ...)
And in about 2 weeks it will do it again, just better... It's winter here folks, time to spruce up the old girls for next riding season, plus she needs to be in show shape for early January where I will be showing her in a local bike show competition, AND I am going to ride her in and ride her home regardless of weather because she is allergic to trailers ;)




Thats dangerous talk... I can see it now... 2+ feet of snow with freezing rain on the way :D

He did say run circles around whatever yer rollin, lol
I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

The Wife's Bike - 750K5
The Kid's Bike - 750K3

ev0lution7

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Re: Progressive suspension shock and fork springs install
« Reply #31 on: December 04, 2008, 02:33:39 PM »
i am thinking about doing the emulator and rear shock upgrade do you like yours so far?

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #32 on: December 04, 2008, 06:03:39 PM »
i am thinking about doing the emulator and rear shock upgrade do you like yours so far?
ev07-
The shocks look great up on the bike lift, and I have so far thoroughly enjoyed the look of the packaging from Race Tech and Progressive Suspension, all of it handled great in the boxes too.

Just kidding.

This is still a work in progress, and I need to get my fat @$$ back into the garage right now to finish up the paint on the fork lowers.

as soon as she is on the road again (by New Years hopefully, if only for a midnite test ride) I will law down the 411 on the ride improvement, which I am sure will be significant on this bike since my fork seals have been weeping since July. The emulators did the trick for my old RD400 a few years back, and that was a younger and lighter bike that seemed to handle well before I installed the emulators.

TO ANYONE WHO HAS DONE THE RACE TECH EMULATORS ALREADY:

Please tell me if you welded shut the rebound holes or not, and whether you have some feedback on which set up is better. I cant make up my mind on doing it now or not, but god knows I wont want to fully tear the forks down anytime soon to do it.

LMK as I am drilling the damper rods by the weekend, and would need to hook up with a torch SOON to get it all together.
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #33 on: December 16, 2008, 08:20:39 AM »
OK....

Whoever suggested boiling the fork lowers to aid in removal of the oil seals, thanks!
(but wait to paint your legs until AFTER you do this)

Also, who needs a drill press and a torch? Hand drill, vice with rubber jaws, and some JB Weld were what I used to drill n fill my dampers as per MReick's suggestions.

More to come tommorow when I finish rebuilding the forks....
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline MCRider

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Re: Progressive suspension shock and fork springs install
« Reply #34 on: December 16, 2008, 08:27:29 AM »
OK....

Whoever suggested boiling the fork lowers to aid in removal of the oil seals, thanks!
(but wait to paint your legs until AFTER you do this)

Also, who needs a drill press and a torch? Hand drill, vice with rubber jaws, and some JB Weld were what I used to drill n fill my dampers as per MReick's suggestions.

More to come tommorow when I finish rebuilding the forks....
Not having seen one of those lately, whereabouts is the hole you filled? Glad you're making progress you're going to like the ride, I think.
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #35 on: December 16, 2008, 08:34:52 AM »
look at the large version of the picture in the above post...
look down from the "piston" end an inch or 2, you will see what looks like 2 tiny holes inline with the 2 large holes I drilled. Those are the rebound holes, the lower one is filled w/JB Weld.
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #36 on: December 16, 2008, 09:52:25 AM »
Dont tell the Mrs
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline MCRider

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Re: Progressive suspension shock and fork springs install
« Reply #37 on: December 16, 2008, 09:53:59 AM »
look at the large version of the picture in the above post...
look down from the "piston" end an inch or 2, you will see what looks like 2 tiny holes inline with the 2 large holes I drilled. Those are the rebound holes, the lower one is filled w/JB Weld.

I see, thanks!
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #38 on: January 27, 2009, 07:21:39 PM »
I have been meaning to give an update of the performance of the shocks and my fork overhaul.

Simply, the bike handles MUCH better. Maybe not like a current GP or superbike, but at least as well as my VFR did a few years ago.
I started with the rear shock at its softest and after about 50 miles like that I discovered that my rear wheel had worn down a sizable groove in my under tail mounted brake light.... I guess my travel has increased because I put 2000+ miles on the bike last year after I angled my brakelight down for better visibility. No biggie, $60 and change for a very slick flexible LED strip tail/brake/signal light from Signal Dynamics and another click of preload in the rear and back out on the road. I probably have only logged 200 or so miles since then but man were they nice miles. Sitting while plowing over speedbumps @ 30mph is something I have never done before on ANY bike, I always hopped up on the pegs to un weight the saddle, I don't have to anymore (but still do out of habit). The Progressive Suspension shocks are well worth the $ in my opinion.

The forks are completely different from when the seals were blown, obviously, but also much better then I remember any pre 1990's bike I have ever ridden. They are really adjustable, and I have yet to alter my initial set up other then to add a few lbs of air pressure to see what difference it would make. I am sure I will fuss with and fine tune it a little comes regular riding season, but it is handling incredibly well for the shorter slightly more sedate rides I have been doing on cold roads breaking in new brake pads.
It is hard to say if the Progressive Suspension springs or RaceTech valve emulators are responsible for the improvement by themselves, i believe my results are a sum of the many parts. I know the springs are a great improvement over stock, and having the ability to fine tune the forks valving so easily is a great thing.

All in all, these couple of things and a new All Balls roller bearing headset were simple, relatively inexpensive projects that anyone here with simple tools can do themselves and TRANSFORM the ride of your old bike in a very tangible way.

Happy wrenching,
Drew
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

ev0lution7

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Re: Progressive suspension shock and fork springs install
« Reply #39 on: April 02, 2009, 11:16:43 AM »
any more updates have you had some time to put some more miles on it?

Offline 78CB750CAFE

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Re: Progressive suspension shock and fork springs install
« Reply #40 on: April 02, 2009, 04:48:28 PM »
850 miles since new years...
The suspension really is way better than it was, I had a chance to ride a low mile k7 with stock suspension and a 75 cb350 recently and had a reminder of how different the stock forks felt. I still need to tweak the cartridges a little, but I am really close to where I want to be. I am also currently running 2 bar of air pressure as well.
"I believe in the bodies, I believe in the blood, I believe in salt around the rim of the glass because it makes us thirsty, and when we drink, then we all fall in love"
-212 Margarita by The Hold Steady
Build thread:http://forums.sohc

Offline MCRider

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Re: Progressive suspension shock and fork springs install
« Reply #41 on: April 02, 2009, 05:00:09 PM »
850 miles since new years...
The suspension really is way better than it was, I had a chance to ride a low mile k7 with stock suspension and a 75 cb350 recently and had a reminder of how different the stock forks felt. I still need to tweak the cartridges a little, but I am really close to where I want to be. I am also currently running 2 bar of air pressure as well.
Not only is the ride better, it is way safer as the chance of a tamkslapper from bottoming out is greatly reduced. I knew you'd like them.
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."