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Message started by LarryC on 09/01/11 at 16:50:53

Title: Manual Cam Chain Tensioner
Post by LarryC on 09/01/11 at 16:50:53

Not tryin' to start a war, just curious, there's a manual tensioner out there for the DR650, sold by Procycle.com. Vers, please forgive me........Would it work? Pop the cover every time you change the oil and tweak it????? :-/
Is it more of a racing thing?
LarryC

How much braking potential comes from the front brake? Answer=70%-MSF

Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/01/11 at 17:31:18

No problem, been RE-thinking this one too.

give up a link for info, like to take a look.

Title: Re: Manual Cam Chain Tensioner
Post by LarryC on 09/01/11 at 17:48:14

http://www.procycle.us/bikepages/dr650.html

They push the TOOL for installing, about the same price as the tensioner, stating that problems arise when rookies try to the job w/out a third hand.

Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/01/11 at 17:58:37

problem is, there's no where to mount this thing.
http://www.procycle.us/images/bikepages/dr650/tensioner.jpg

Title: Re: Manual Cam Chain Tensioner
Post by LarryC on 09/01/11 at 18:01:01

Isn't the DR650 and the LS 650 the same motor?

Title: Re: Manual Cam Chain Tensioner
Post by Boule’tard on 09/01/11 at 18:02:30

The cam chain tensioning setup for the DR650 is nothing like the Savage.  The DR's CCT can be removed without opening the case, not so with the Savage.. the systems are not at all alike.  

Neither the DR or Savage need a manual CCT.   The DRZ400 benefits from it, but not the DR.  Procycle is a good vendor but they're FOS acting like a MCCT is necessary for the DR650.

Title: Re: Manual Cam Chain Tensioner
Post by LarryC on 09/01/11 at 18:05:38

Now you know the rest of the story, as per Paul Harvey. So Vers, what are you re-thinkin'.......

Title: Re: Manual Cam Chain Tensioner
Post by Oldfeller on 09/01/11 at 21:40:20


Back in the "cam chain discovery" days we all had a theoretical chain tensioning system that could replace the Suzuki system completely.

Some got built -- they worked but were cumbersome and expensive.  I built an expensive spring/hydraulic system but realized that a leak could tear up my engine so I never put it in place.

I also had an "inelegant" system that I invented later,  one that I did put in a motor that is still doing its job as we speak.   Problem is the motor is on a pallet wrapped in plastic waiting being needed.

Verslagen won't say what his new idea is until his idea is fully cooked -- he's the silent type.

Title: Re: Manual Cam Chain Tensioner
Post by engineer on 09/03/11 at 14:10:00

It would be easy enough to make a threaded tensioner that would replace the existing one and would mount the same way.  But who would want to take the cover off to turn it a couple threads and then reseal the cover every time it was a bit loose.  The current Verslavy version takes up a huge amount of slack when it is mounted using the new hole and it would be hard to put that much adjustment distance in an adjustable one that would mount to the same hardware.  But one could be made with an extended hole similar to the Verslavy, you just couldn't use it until you had some accumulated chain wear and wouldn't gain much if anything over the simple Verslavy conversion.

If I were going manual I would want to be able to do it outside the case.  Maybe some clever guy can figure out an easy way to do that.

Too bad they didn't just build the thing with a heavier chain that wouldn't stretch out so quick.

Title: Re: Manual Cam Chain Tensioner
Post by MotoBuddha on 09/03/11 at 18:39:39


484A414A434A465C2F0 wrote:
But who would want to take the cover off to turn it a couple threads and then reseal the cover every time it was a bit loose.


Which is why automatic tensioners were invented. Manual tensioners are fine if someone's the type who's always fiddling with the engine anyway.

The Savage was intended as a beginner bike that would be sold after a year or two in order to move up to a bigger bike. So there are a few things that are budget engineered. The cam chain is one of them, unfortunately.

Rather than spend the money, time and energy trying to make some kind of manual adjuster work (unless you just get off on the challenge), get a Verslavy and be good to go. Maybe get a new chain if you want to do more involved wrenching.

Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/03/11 at 22:36:29


3E3020323536272A34262A530 wrote:
So Vers, what are you re-thinkin'.......


Are you a machinist?  Or are you lookin' to bolt something on?

A machinist could drill and tap a hole, put in a counterbore.  And with some hardware be done.

If you want a bolt on...

http://smileyjungle.com/smilies/headgear8.gif

still working on it.

Title: Re: Manual Cam Chain Tensioner
Post by Serowbot on 09/03/11 at 22:48:44

Oh,.. horsefeathers!...  
If you're gonna' go that far,... why not just make a conversion to a pushrod and hydraulic lifter?...

how hard can it be?... :-?...
http://p1.bikepics.com/2008%5C09%5C07%5Cbikepics-1409745-full.jpg



Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/03/11 at 23:09:16

you know that's a fake don't ya?

and that's a fake bevel drive.

Title: Re: Manual Cam Chain Tensioner
Post by Serowbot on 09/03/11 at 23:13:26


253621203F3234363D62530 wrote:
you know that's a fake don't ya?

and that's a fake bevel drive.

I know that,... and you know that,... but does the guy who did it, know that?...
:-?...

I always wondered what that plugged port was for, on the right sidecase...

;D ;D ;D...

Serious note...  what's the downside of a bevel drive?... Do they ever wear out or need adjusting?  ...  
I don't mean,, ever, ever... but...  it seems as solid as a gearbox... :-?...

Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/03/11 at 23:25:16


4D5B4C51495C514A3E0 wrote:
I always wondered what that plugged port was for, on the right sidecase...

;D ;D ;D...

That's the oil fill port.   ;D

Title: Re: Manual Cam Chain Tensioner
Post by Serowbot on 09/03/11 at 23:36:24


6E7D6A6B74797F7D7629180 wrote:
[quote author=4D5B4C51495C514A3E0 link=1314921053/0#13 date=1315116806]I always wondered what that plugged port was for, on the right sidecase...

;D ;D ;D...

That's the oil fill port.   ;D[/quote]
Not that one!... That's the one you're supposed to put oil in,... if you don't use  "Clots",...
I mean "Klotz"...
:-?...

Title: Re: Manual Cam Chain Tensioner
Post by verslagen1 on 09/03/11 at 23:55:53


5046514C54414C57230 wrote:
Not that one!... That's the one you're supposed to put oil in,... if you don't use  "Clots",...
I mean "Klotz"...
:-?...

Oh, the one on top?
Just a cross drill to connect the cylinder oil path.

Looks ripe for a gage don't it?

Title: Re: Manual Cam Chain Tensioner
Post by Serowbot on 09/04/11 at 00:03:54

Definitely needs a purpose of some kind...

It's just sittin' there,.... waiting.... ;)...

(I thought the engineers had an idea, and then changed their mind, and stuck a plug in it)...
;D ;D ;D...

Title: Re: Manual Cam Chain Tensioner
Post by LarryC on 09/04/11 at 10:52:16

Machinist?....No...Grew up on a Saw Mill....When somethin' broke you made the part out of stronger stuff...Cuttin' torch....Welder... Function was the order of the day....Fashion.....not so much... Overkill vs Bandaid.
Sounds like Vers' invention is the answer, just add the better chain...At the most opportune time, when you  have gotten' all life out of the Stock POF(feces) ;D ;D
My passion involves educating those who want to partake of the joys ridin'(Something that works properly, of course!)

Regards-LarryC

12 second anticipated path=Look that far ahead-MSF

Title: Re: Manual Cam Chain Tensioner
Post by justin_o_guy2 on 05/21/16 at 11:56:01

Kawasaki W-650 is gear driven. The lash is critical. Best I can tell, those engines need valves adjusted rarely and just Run and Run..
As long as nothing happens, like screw up, mess up the plug threads, hafta take the head off, then the bevel gears are rarely a problem. Adjusting them in assembly is not something I want to do, but it looks possible.  

Title: Re: Manual Cam Chain Tensioner
Post by norm92de on 05/21/16 at 13:25:12

We can have a manual cam chain adjuster if, as Dave suggested, the spring  behind the plunger is removed.
We then need to figure out a way to push the rear guide forward without opening up the clutch cover. OK I know.---- But just a push on the thing would allow it to catch the next tooth on the ratchet and we would be good to go until the next time.

I know this isn't a solution but just my thoughts. :)

Title: Re: Manual Cam Chain Tensioner
Post by justin_o_guy2 on 05/21/16 at 16:39:28

Have you looked at what Is behind the plunger? The pin and casting that the whole thing is mounted To.
I'm thinking a softer spring would be a start.

Title: Re: Manual Cam Chain Tensioner
Post by LANCER on 05/22/16 at 03:33:45

Hey, we could just loosen the head bolts occasionally just a "touch" and that would snug up that old chain ! ! !    :D

Title: Re: Manual Cam Chain Tensioner
Post by justin_o_guy2 on 05/22/16 at 07:37:49


68656A6761763633040 wrote:
Hey, we could just loosen the head bolts occasionally just a "touch" and that would snug up that old chain ! ! !    :D



Is This the same guy who was asking if others were drinking moonshine?

Title: Re: Manual Cam Chain Tensioner
Post by batman on 05/22/16 at 21:11:36

I think taking the spring out of the tensioner and using just the paw might not be so good,if the paw fails you could be in some big trouble!A lot worse than what I'm trying. Even if my spring were to break it would remain inside and keep the plunger from bottoming out.

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