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Extending the life of the camchain (Read 769 times)
blue-thumper
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Re: Extending the life of the camchain
Reply #30 - 01/21/07 at 07:33:20
 
es ist doch egal ob ich den deckel zum einbauen einer neuen steuerkette oder zum nachstellen öffnen muß.

gruß norbert
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Kropatchek
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Re: Extending the life of the camchain
Reply #31 - 01/21/07 at 08:53:27
 
blue-thumper wrote on 12/31/69 at 16:00:01:
ich spreche leider kein englisch aber vieleicht kann das ja einer übersetzen.

probleme mit längeren steuerketten gibt es keine, hier ein beispiel von zwei ketten.

die eine ist neu und die andere hat 65 000 km gelaufen, der längenunterschied ist so gering das dieser auf die steuerzeiten kaum einfluss ausübt.

http://www.ls-650.de/techfotos/steuerketten.jpg

außerdem sind die steuerzeiten der savage so zahm berechnet das die geringe längung der kette nicht bemerkbar ist.

ich selbst fahre momentan eine steuerkette mit 58 000 km ohne probleme.

ich habe alles lange genug getestet und erst dann mit dem verkauf der neuen kettenspanner begonnen.
gruß norbert (blue thumper mit 135 000 km) Grin

"Unauthorized translation"
Unfortunately I do not speak English but someone can make the translation.

There are no problems with the extended lenght of the chain.
Here are examples of 2 chains:
# 1 is new and the other has been running 65000 Km.
The difference in lenght is so small that it has hardly any effect on the valve timing.

Futher more is the valve timing that soft ( as opposed to racing cams. ed) that the small amount of increased lenght is hardly noticeable.

I have an engine with a chain that has run 58000 Km without problems.
I have tested long enough and then started selling the new chain tensioner.

Greetings Norbert (  blue thumper with 135,000 Km

Hope this helps
Kropatchek Grin
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Kropatchek
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Re: Extending the life of the camchain
Reply #32 - 01/21/07 at 08:55:53
 
blue-thumper wrote on 12/31/69 at 16:00:01:
es ist doch egal ob ich den deckel zum einbauen einer neuen steuerkette oder zum nachstellen öffnen muß.

gruß norbert

Unauthorized translation

It does not make any difference whether you have to open the sidecover for chain replacement or to adjust the tensioner.

Greetz
Kropatchek Grin
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Re: Extending the life of the camchain
Reply #33 - 03/05/07 at 08:46:47
 
Remember this post?
Reading to the German forum the chain and or guides have to be replaced anywere between 10 and 30,000 KM.
With the Standard Kit the life of the chain/guides can be extended up to 50 or 60,000 KM.
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Re: Extending the life of the camchain
Reply #34 - 03/05/07 at 09:15:58
 
If the weight of this has missed you... Norbert has a BIG ruler!  Shocked

Norbert has gone 40,000 miles and chain has only stretched .054" per 21 pins or 5"

So, the chain is still within spec.  Grin
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Re: Extending the life of the camchain
Reply #35 - 03/05/07 at 17:05:25
 
Oh BTW Norbert, those are cm's, not mm's. Grin
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Re: Extending the life of the camchain
Reply #36 - 03/05/07 at 19:12:07
 
verslagen1 wrote on 12/31/69 at 16:00:03:
Oh BTW Norbert, those are cm's, not mm's. Grin

Thanks for clearing that up.  I suspected something was wrong Tongue
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Re: Extending the life of the camchain
Reply #37 - 03/11/07 at 14:54:43
 
Well the device to "extend the life of the camchain " is in.
Norbert did a wonderfull job as the pieces went together as promised, lasercut to .01 mm.
I wanted to replace the countersunk bolt by SS bolts but found out that the heads were turned off a little as to clear the other plates.

Here a picture of the complete installation.
I fitted a new guide and used the old ( 127.9 mm ) chain and made the adjusment at the bottom for the tensioner to be 10 mm out.



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Re: Extending the life of the camchain
Reply #38 - 03/11/07 at 18:14:56
 
kropatcheck,
that is awesome.
did he ever figure a way to adjust with the cover in place ?
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Re: Extending the life of the camchain
Reply #39 - 03/11/07 at 20:48:12
 
You have to release the rachet in the tensioner before it will retract.  So the cover still has to be opened.
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Re: Extending the life of the camchain
Reply #40 - 03/12/07 at 04:14:11
 
franch wrote on 12/31/69 at 16:00:03:
kropatcheck,
that is awesome.
did he ever figure a way to adjust with the cover in place ?


The "Other" system worked with a damper i.s.o. the tensioner. Norbert had problems with the spring that would move the top-plate. Believe he dropped the idea for now.
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Kropatchek
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Re: Extending the life of the camchain
Reply #41 - 03/12/07 at 04:17:21
 
verslagen1 wrote on 12/31/69 at 16:00:03:
You have to release the rachet in the tensioner before it will retract.  So the cover still has to be opened.


You're right about that. Will open the case at the end of my riding season ( april - november) estimate 3000 km and will let you ( and everybody else) know what happened.
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Re: Extending the life of the camchain
Reply #42 - 03/12/07 at 04:51:05
 
verslagen1 wrote on 12/31/69 at 16:00:03:
You have to release the rachet in the tensioner before it will retract.  So the cover still has to be opened.


That looks great.  Another pioneering step forward.

Is it at all possible to install a stronger spring and remove the ratchet?

I dunno.  Just a thought.
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Re: Extending the life of the camchain
Reply #43 - 03/12/07 at 17:02:39
 
SHoulda posted this here in the first place.

I think I may have come up with a way to make a adjustable tensioner, that is cheap <$20 and can approx. double the life of the chain. all parts can be bought at an industrial supply.



picture is as close to scale as i could make it on this computer.

I have all the parts ordered, and they should be here this week.

The basic priniciple is to use a 1/4" drill and drill out from the inside of the tensioner cavity toward the bolt hole. Thread the new hole using an m8 tap.

cut off the old flange and screw in the new bolt, see picture.

the spring from the tensioner should slide over the the bolt and thus wont change the tension from stock.  Also i am thinking that a nut on the inside and a jam nut should stabilize everything really well.

In theory if you cut the bolt so that it just sticks out of the tensioner cavity, you should double the life of the chain and tensioner set-up.

Along with the bend mod mentioned in another thread, we should be able to get on top of this thing. I think every 6k miles you go in and turn out the bolt, tighten the jam nut, and reset the tensioner, and wallah.

I will post picks on this mod and let you know all how it works.

Any input from the engineers in the group would b great.
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1996 Mirage paint, seat lift, 2 #4 washers, 155 main, 52.5 pilot. Removed pillon, belt guard, rear blinker mod, moved battery box. K&N cone, Chain conversion 17/43 (in process). Cam tensioner mod.
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Re: Extending the life of the camchain
Reply #44 - 03/12/07 at 17:49:42
 
sounds great!

This would give you the ability max out the time between adjustments.

General rule: you need to have 1 1/2 times the thread diameter to thread the bolt to for full strength.
ie., 8mm x 1.5 = 12mm
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