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The Vintage Japanese Motorcycle Owners Group: Discussion Forums

Vintage Japanese Motorcycle Owners Group :: View topic - '73 CL100 fix-up


'73 CL100 fix-up
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spurlock
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Joined: Jul 08, 2014
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Location: Vacaville, CA

PostPosted: Sun Sep 17, 2017 3:14 pm    Post subject: Reply with quote

dgjessing wrote:
Is the right hand side cover on a CL100 the same as that on a CB100? I'm guessing that it is not; different to clear the exhaust pipe. But confirmation would be helpful.


You're right, the CL cover is different to fit around the muffler.

-Bill

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1975 Honda XL250K2
1989 Honda NX250
1989 Honda GB500tt
1990 Honda GB500tt
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mnmrider
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PostPosted: Tue Sep 19, 2017 11:39 am    Post subject: Reply with quote

... looking great but don't forget to get rid of the clubman bar and replace it with the correct handle bar. That together with a stock seat will improve the look a lot i.m.h.o.
mnmrider
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dgjessing
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PostPosted: Tue Sep 19, 2017 1:17 pm    Post subject: Reply with quote

mnmrider wrote:
... looking great but don't forget to get rid of the clubman bar and replace it with the correct handle bar. That together with a stock seat will improve the look a lot i.m.h.o.
mnmrider


I completely agree - new bars are on the list.

I got a seat off eBay but it's not right. Mounts are the same but it's a little too short and a little too wide. I think it's from a CB instead of a CL, as the CB's gas tank is bigger. The seller agreed to kick back some of the money instead of fooling around with returning it, so I guess I have a CB100 seat for sale Rolling Eyes



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mnmrider
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PostPosted: Tue Sep 19, 2017 8:51 pm    Post subject: Reply with quote

Did you try Marbles motors for a seat? http://marblesmotors.com/product-category/parts/
mnmrider
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dgjessing
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PostPosted: Wed Sep 20, 2017 2:59 pm    Post subject: Reply with quote

Thanks, but Marbles doesn't seem to have one. There are a couple on eBay, but my discretionary funds are pretty slim right now so I'm going to wait. I've put the new (incorrect) seat on temporarily because it sure is more comfortable.

But I found that without that upholstered "snout" extending over the end of the tank, the tank kinda rattled around on bumpy roads. To fix this, I drilled and tapped an m6x1 hole in the flat spot of the frame so I could put in a screw to hold it down. It's sandwiched in thick, hard foam pads with a fender washer on top (see picture). Much better. But that gap bugs the shit out of me - need the correct seat!

I've also noticed that the right rear shock's spring is rubbing on the back side of the muffler. I think the bracket has probably been bent in at some time. Going to fix that in a little while here.

Have also noticed quite a bit of noise coming from (I think) the speedometer. Going to try a little ride with the cable disconnected to see if that's the issue, or if it's just something vibrating.



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dgjessing
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PostPosted: Fri Sep 29, 2017 8:11 am    Post subject: Reply with quote

Finally got the correct seat!

I've been riding the thing a lot - scoping out 45mph routes all around the area. Get a lot of guys rolling down their windows to ask "what year" etc. at stop lights Very Happy



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spurlock
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PostPosted: Fri Sep 29, 2017 8:17 am    Post subject: Reply with quote

dgjessing wrote:
...............Get a lot of guys rolling down their windows to ask "what year" etc. at stop lights Very Happy


Yep, that's part of the fun of vintage bikes. I rolled up to a gas pump the other day on my CB125, shut of the engine and heard some clapping. Turned around and two guys standing by a pickup were grinning and giving me thumbs-up. And of course they had to walk over and ask what year it was! Kind of a good feeling knowing you've brought a little pleasure into someone's day.

-Bill

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1975 Honda XL250K2
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dgjessing
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PostPosted: Mon Oct 09, 2017 4:04 pm    Post subject: Reply with quote

Sold that wrong seat on eBay for more than I paid for it Very Happy . Got new handle bars on the way - not "correct", but closer than these clubman things it has now. I can start it cold first kick now most of the time. Happy camper!
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dgjessing
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PostPosted: Wed Oct 11, 2017 3:57 pm    Post subject: Reply with quote

New handlebars arrived. I cut about 1.25" off both ends to get the over-all width to 26". Makes it easier to get it through the 32" door Very Happy . I thought they would have a bit more rise than they do, but they will be OK. The riding position is much more comfortable - don't have to bend my wrists out too far like with the clubman bars. Close enough to stock to fool 99% of people I'll bet!


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John550f
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PostPosted: Mon Oct 16, 2017 5:51 pm    Post subject: Reply with quote

Hey there!
I just picked up a 72 CL100 myself so I’m interested in your thread. I have not taken the time to read it all yet so I apologize it you have already answered this question. What type of battery are you running? I’ll try and post some pics of mine. Like you wiring is a mess. Keep up the great work.

John

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dgjessing
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PostPosted: Tue Oct 17, 2017 7:56 am    Post subject: Reply with quote

John550f wrote:
Hey there!
I just picked up a 72 CL100 myself so I’m interested in your thread. I have not taken the time to read it all yet so I apologize it you have already answered this question. What type of battery are you running? I’ll try and post some pics of mine. Like you wiring is a mess. Keep up the great work.

John


Thanks! Yes, please post pictures. Battery is 6N6 3B, per the manual.
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dgjessing
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PostPosted: Sat Oct 21, 2017 1:53 pm    Post subject: Cam chain adjustment? Reply with quote

Regarding the timing chain adjustment, the manual says to loosen the screw, then turn it in "until it becomes heavy". Well mine feels the same, from all the way out to all the way in. Yesterday I removed the cover over the cam sprocket so I could feel the tension with my little finger. Loosening the screw definitely lessens the tension somewhat, but never to the point that it feels sloppy. All the way out, there is still some spring tension on the chain. So I just ran it in a couple turns from all the way out and put it back together. The screw is out quite a bit further than it was before, and I can't discern any difference in performance or noise from around the head. Seems to me that it would be better to err on the loose side than to have it too tight - does that sound right?
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spurlock
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PostPosted: Sat Oct 21, 2017 7:04 pm    Post subject: Reply with quote

There were two types of cam chain tensioner mechanisms. On the early style (used in engine number before 206400) the tensioner blade that presses against the back side of the chain was spring loaded from below, causing it to curve more and press against the chain. The tensioner screw pushed down from above to limit the upward pressure of the spring and limit the chain tension. So backing the screw out until it is no longer pushing against the spring tightens the chain, while screwing it down pushes down and straightens the tensioner blade, loosening the chain. On that style you back it off till the screw feels loose, then screw down just until you feel the resistance of pushing against the tensioner spring. On this style it is impossible to over-tension the chain because the spring force is limited in strength. This early style is shown in the main (left) picture here:
https://www.cmsnl.com/honda-cl100-scrambler-1970-k0-usa_model529/partslist/E++05.html#results

The later style (after engine number 206400) is pictured on the right inset illustration of the link above. On that style the adjustment screw is physically connected to the bottom of the blade. It adjusts in a similar way, screwing down straightens the tensioner blade and loosens the chain. But backing the screw out will pull the tensioner blade into a tighter arc, over tightening the chain if turned too far. And if turned out way too far a circlip can be pulled off the bottom of the screw, disconnecting the screw from the tensioner so adjustment is then impossible.

In either case the chain adjusts opposite of what you describe: turning the screw down loosens the chain, turning it up tightens - unless it's the late style and has become disconnected. So first step is to find out what style tensioner you have, then pull the rotor or alternator cover to inspect if you feel the chain is noisy and not adjusting correctly. Hope this helps,

-Bill

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1975 Honda CB125S
1975 Honda XL250K2
1989 Honda NX250
1989 Honda GB500tt
1990 Honda GB500tt
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dgjessing
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PostPosted: Mon Oct 23, 2017 7:35 am    Post subject: Reply with quote

Thanks, Bill!
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John550f
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PostPosted: Thu Nov 02, 2017 3:44 pm    Post subject: Reply with quote

Hey guys I ran into a problem today when ordering a battery online from amazon. It asked if the bike was a scrambler or a scrambler/s. How can I tell if it’s an “s”or not. Amazon is saying the 6N6-3B fits the s , not just scrambler. My vin number is CL100-1226782. Is amazon correct?
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