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The Vintage Japanese Motorcycle Owners Group: Discussion Forums

Vintage Japanese Motorcycle Owners Group :: View topic - Normal - Abnormal ?


Normal - Abnormal ?

 
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Howdyboy
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Joined: Feb 17, 2018
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Location: Central Pa

PostPosted: Fri Feb 23, 2018 5:23 am    Post subject: Normal - Abnormal ? Reply with quote

OK, my ? IS ! Is it normal or not to find CT-90 parts in a ST-90 motor , such as a fly wheel & a timing advancer , being as I already have this ST motor on a CM body , I feel the need to ask this ?, Or may I have a Johnny Cash ( one piece at a time ) item Crying or Very sad Have already found half the float missing in the carb , & most recently found (ONE) spring on the timing advancer, yep I did say (ONE) , Who the H--- was this MASTER mechanic ? Shocked, before my auction purchase , any input ? TY Howdy !
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05c50
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PostPosted: Fri Feb 23, 2018 8:09 am    Post subject: Reply with quote

In the world of vintage motorcycles, I would say yes it's normal to find parts from many bikes assembled into one. Is it right, probably not, but you have to remember that these things are 40 or 50 years old and their relative low value caused them to be repaired in what ever manner was available. I've found that the smaller (less valuable?) bikes suffer from this than the larger bikes.

.......Paul

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mnmrider
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Joined: May 14, 2015
Posts: 128
Location: Alberta, Canada

PostPosted: Fri Feb 23, 2018 8:40 am    Post subject: Reply with quote

Not only will you find parts of other models - I guess a lot of parts from the 90 cc ers are interchangeable - but often you will be surprised to find hardware that came from the local hardware store like this bolt in the spring stopper under the fork cap. (not intended to steal your thread). Usually acceptable if it still is metric...

https://www.dropbox.com/s/ghib1t3gqo96bhx/IMG_0891.JPG?dl=0

Marc
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Howdyboy
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PostPosted: Fri Feb 23, 2018 11:05 am    Post subject: Reply with quote

OKKKKKKKKK, THNX men, then more parts available the merrier, only seems as though those advance leg springs should be bountiful then , But it seems NOT ! I would surely think they were used on many different Honda bikes & even other Honda equipment , how can something so simple & tiny , that plays such a huge role in an operation be so rare at a reasonable price ! WOULD the real hoarder of these little items (PLEASE) Step forward :old: ! If a foreign co makes an after market advancer mech , which I read is fact, then I would imagine those little spring buggers are used for multiple items & a DIME a DOZEN haha or is it all just wishful thinking on my part ? Help ty Howdy !
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05c50
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PostPosted: Fri Feb 23, 2018 11:42 am    Post subject: Reply with quote

You have to remember that the springs control the advancer using centrifical force and they were designed to deflect a certain amount at different rpms. Although the springs appear the same the spring rate may be different, but I think that you'd have a hard time telling the difference.

......Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
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Bentwheel
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Location: Sarnia, Ontario, Canada

PostPosted: Fri Feb 23, 2018 12:14 pm    Post subject: Reply with quote

I've got those springs, but they are from a CM90 engine. They measure 19.5mm long and 5.6mm wide. If this is the same size then then I can send them to you. Only problem is you have to buy the whole advance unit. $10 plus shipping from Canada.
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Howdyboy
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PostPosted: Fri Feb 23, 2018 9:20 pm    Post subject: Reply with quote

Thanx , Paul & Bent , I will keep this all in mind & work diligently in my area & see what I can come up with respekt ty Howdy !
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B52bombardier1
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PostPosted: Sat Feb 24, 2018 3:42 am    Post subject: Reply with quote

Yamiya in Japan sells these springs that appear to be the same as early 70's Honda CB750 advancer springs:

http://www.yamiya750.com/index.php?main_page=advanced_search_result&search_in_description=1&keyword=advancer+springs

They are a spendy 3000 yen which is a tad over 28 bucks plus shipping.

Rick

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Howdyboy
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PostPosted: Sat Feb 24, 2018 5:39 am    Post subject: Reply with quote

Highscore , THANK YOU , B - I feel we must have, or come up with a better solution , on our own turf ! My feelings are , that if these were used in so many different bikes , & possibly applications that aren't familiar to us, then (at a reasonable cost) hoards of classic & vintage owners would purchase multiple #s of them, sayyyyyyyyyyy, as in, maybeeeeee, ( 2$bucks apiece ) , I grew up hard working , simple, country , I'm just not the type, lets say to pay, $5 bucks for a slice of pizza , weather it be in Manhattan or Katmandu, & yes I realize I would starve in the previous Smile maybe this is why I was led here, maybe this is my purpose , & maybe this will be my (GOAL) ! As by now I'm sure the point is known , I despise getting ripped by companies that think every individual will pay with their soul for something they feel one has to have , such as the Rx people , OK, end of angryfire rant, WE"ll see what we can do, TY all for your input & for helping to stir my pot , I need those jump starts on occasions ! Howdy !
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Bentwheel
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Location: Sarnia, Ontario, Canada

PostPosted: Sat Feb 24, 2018 10:31 am    Post subject: Reply with quote

Dude, sell your bitsa bike and get out of the restoration hobby. You aren't cut out for it. Holding out for a miracle that someone will produce 50 year old Japanese stock made in America for $2 is insanity.
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05c50
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PostPosted: Sat Feb 24, 2018 11:11 am    Post subject: Reply with quote

Howdyboy wrote:
Highscore , THANK YOU , B - I feel we must have, maybe this is why I was led here, maybe this is my purpose , & maybe this will be my (GOAL) ! WE"ll see what we can do, Howdy !


OK, let's put this into some perspective. Actual cost of producing the springs would be very minimal as long as enough were produced to cover engineering, machine setup, and labor costs. Reverse engineering could be done to determine material, size. spring rates, etc.: a company could be found to produce them once you've determined the engineering stuff, here's an example: http://www.quickspring.com/form/custom-quote . The biggest problem would be determining the market. Different motorcycle manufacturers use different springs, so you would need to determine which particular make and model that you want to cover. Through research you could find different model applications that would be "close enough" to allow you to market them to fit more than one application. Next you need to target that audience through some kind of marketing. And then the biggest problem as I see it, is to convince your customer to purchase them. All that for a couple bucks a piece. Yes it could be done, but it would take years (probably decades) to recover the initial costs.
The fact that these old bikes are a limited comodity and the number dwindles every day, it makes sense to me (imho) to pay the inflated price of nos or "good used".

.....Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
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dorT500
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PostPosted: Sat Feb 24, 2018 12:28 pm    Post subject: Reply with quote

$$$$$....it's not so bad.......... after you finally stop keeping up with the crazy money you have spent on restoring a bike.

Hmm Uh-oh......now I'm getting flashbacks......I don't feel so good. Neutral




Howdyboy wrote:
.....maybe this is why I was led here, maybe this is my purpose , & maybe this will be my (GOAL) !......
I think you just like our emoji's. beammeup
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