CX500 minor bob job - whooooot issues solved goes like a bat out of hell, for an old bike at least

Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

The top speed for these is something like 105mph
was it lazy??
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

A bit. I have some better throttle cables to install. It has great. 1/2 -3/4 throttle. Before and after it sucks.

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Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

Yep, if I can just get a couple hours to play with it I think I can figure out what is up and get it running right. The engine temp guage isn't working so I need to fix that, but the fan comes on if it sits and shuts off when moving again so I am guessing the engine is in the right operating zone. I hope to get to it this weekend, running out of riding weather so I likely won't tag it this year or insure it until next year now. I can rip it up and down the road in front of my house without any worries.
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

Ok I threw new plugs in. Fired her up. Warmed her up the went for a rip up the road. This was not a proper plug chop but I wanted to see what the plugs looked like. It has great response from 1/2- 3/4. Before that is sluggish and from 3/4 to full almost no change. Here is a pic of the plug. Nice line of colour right at the bend in the plug electrode.

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Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

So after refreshing my reading on plugs, the strap colour means the heat range is ok, and the rest is no good until I get the throttle cable changes and get the throttle marked off in 1/4 increments and take my wrench and go up and down the road in 3rd or 4th gear and chop at each setting. So stay tuned, I hope to do that saturday, I will get her running right just in time to store her for winter LOL.
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

what jet sizes have you put in?? And did you ultrasonic the carbs?
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

Off the top of my head I cannot remember, will check when I start the tuning process. I did not ultrasonic the carbs, just lots of elbow grease and carb cleaner etc. I did install the "Jet Kit" for k&N's out of New Zealand that folks used on the CX forum. I really think part of the issue is the throttle cable that came on the bike is too long and has too much play, I also need to follow the manual and set the idle per the instructions, then move to 0-1/4 and check plugs, then 1/4-1/2, then 1/2-3/4 then 3/4 - WOT and make sure the plugs read right and it responds proper. Weekend is supposed to be 24 and sunny and if I can get the 3-4 hours I need I may just get it sorted before snow flies.
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

I may have to pick up some jets, we'll see. I have some that will fit, need to check the sizes though, have them left from when I tuned the CM450 for Emgos and pods. I got that bike to run pretty good so I hope I can get the CX there too, Time is really what I need. I started last night but it was way to dark. I see a lot of riding, plug chops and then changes to the carb settings in my future LOL.
 
Re: CX500 minor bob job - Test ride success, on to final paint and pretty things Up

Just noticed I may have missed a spot cleaning the carbs, I didn't pull out the full open stops in the vaccum slides and there my be some crud in there I missed. I think I may just pull the carbs tonight and go throught them again.
 
Re: CX500 minor bob job - Road her to work, time to address issues

OK, proper 20 min ride to work, list of issues below. All to hopefully be addressed this weekend.

Handling, damn near perfect. tires great, forks good, rear shocks good, Brakes.... front suck, need a re-bleed or rebuild of master. rear need adjustment.

Throttle, too much freeplay so new cable needs to go in

Clutch is slipping so I need to re-adjust or maybe change out disks.

1/4 throttle cruising the bike surges. I am guessing I have the pilot curcuit off. So I will re-read the steps in the manual and do that as soon as I get home while bike is properly warmed up.

top speed is still 75, can't hold that in 5th, drops to 65. clutch slip has some to do with that but I think I may need larger main jets, a plug chop will likely confirm this. I'll know if it is leaning out or if it is getting too rich.
 
Re: CX500 minor bob job - Road her to work, time to address issues

Maritime said:
OK, proper 20 min ride to work, list of issues below. All to hopefully be addressed this weekend.

Handling, damn near perfect. tires great, forks good, rear shocks good, Brakes.... front suck, need a re-bleed or rebuild of master. rear need adjustment.

Throttle, too much freeplay so new cable needs to go in

Clutch is slipping so I need to re-adjust or maybe change out disks.

1/4 throttle cruising the bike surges. I am guessing I have the pilot curcuit off. So I will re-read the steps in the manual and do that as soon as I get home while bike is properly warmed up.

top speed is still 75, can't hold that in 5th, drops to 65. clutch slip has some to do with that but I think I may need larger main jets, a plug chop will likely confirm this. I'll know if it is leaning out or if it is getting too rich.
Click to expand...

For the clutch...remember that the metal discs (pressure plates) have teeth that actually have a correct way to go into the bike. Fingers have a SLIGHT bend in them and that should face AWAY from the bike. The CBR I picked up had a slipping clutch. 4 of the 7 discs were inserted wrong. Put them back in correctly and BAM! No slip.
 
Re: CX500 minor bob job - Road her to work, time to address issues

Thanks Bruno. I think I have the clutch adjusted too lose. I need to look at it, it wouldn't release when I first tried the bike and I think I took too much play out of the cable so I'll start there, If that doesn't rid it of slip I will pull the cover when I change the oil and check the plates and measure the springs. then go from there. I have some CM450 springs that actually may be the same, I need to check the part numbers. I am finding a lot of stuff is common to the 2 bikes.
 
Re: CX500 minor bob job - Road her to work, time to address issues

MotorbikeBruno said:
For the clutch...remember that the metal discs (pressure plates) have teeth that actually have a correct way to go into the bike. Fingers have a SLIGHT bend in them and that should face AWAY from the bike. The CBR I picked up had a slipping clutch. 4 of the 7 discs were inserted wrong. Put them back in correctly and BAM! No slip.
Click to expand...

a slight bend i have never seen or heard of that you are mistaken
 
Re: CX500 minor bob job - Road her to work, time to address issues

So I think I have the clutch sorted there was no free play at all left in the cable so I re adjusted and seems goodn. Reset the pilot circuit and installed better throttle cables and that is good. Got to dobjust the WOT plug chop and that showed bike js way too lean on the main jet so I need to get some or find some to go up a couple sizes. At 1/2-3/4 it seems to run better. I can actually redline it at 3/4 and not wot. So low and mid range is good. Time to get jets and play with wot.

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Re: CX500 minor bob job - Road her to work, time to address issues

what jets are you running now?

normally with no air box and hbox 90/120s do it if the ignition system and advance is up to snuff

if you have the exhaust hbox run 90/115
 
Re: CX500 minor bob job - Road her to work, time to address issues

I am going to pull carbs and see what the jet kit came with I forgot to write it down. I pulled out 115, which are bigger than the 118's I have from my 450 carbs. Which means one are kiehin and one set are aftermarket.

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Re: CX500 minor bob job - Road her to work, time to address issues

xb33bsa said:
a slight bend i have never seen or heard of that you are mistaken
Click to expand...

I'll not mess up his thread with any more than this, and after some digging, I noticed this is not true for all clutches, many of the steel plates can go either way, must have just been the bike I was working on at the time. Odd. After that bike, I've assumed they all slightly waved one direction. So with that, I humbly say that I am sorry for throwing that into this Maritime :) Carry on good sir.
 
Re: CX500 minor bob job - Road her to work, time to address issues

Bruno. No problem. I have seen many clutches packed wrong and each bjke can be different. My 450 came wit one disk turned around wrong and would slip like a mo fo then I pulled it. Repacked it per the parts fiche and it wad gtg after that.

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Re: CX500 minor bob job - Road her to work, time to address issues

maritime

likely some one drilled your jets out at some pioint that is why the 115 is bigger than the 118

so replace them all they are not expensive if you have no air box no hbox

use 90/120
 
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