Ball-swivel rocker adjusters

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Ball-swivel rocker adjusters

Postby rvich » Sun Jan 08, 2012 12:43 pm

Anybody ever try these in a Commando head? I have to wonder if there isn't enough oil spashing around under those valve covers to keep them lubed without drilling the rockers. At least it sure seemed like that when I lost a rocker cover and puked oil all over the bike!

http://b2600turbo.com/swivel%20foot.htm

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Re: Ball-swivel rocker adjusters

Postby swooshdave » Sun Jan 08, 2012 1:40 pm

Good find. I wonder if those would even work on the extreme angles of the Combat valve train?
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

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Re: Ball-swivel rocker adjusters

Postby rvich » Sun Jan 08, 2012 1:42 pm

I have also been looking at these...

http://vwparts.aircooled.net/Porsche-Va ... juster.htm

It took me a while to find the Porsche variety as opposed to the Chinese knock-offs.
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Re: Ball-swivel rocker adjusters

Postby rvich » Sun Jan 08, 2012 1:47 pm

swooshdave wrote:Good find. I wonder if those would even work on the extreme angles of the Combat valve train?


I don't know, which is why I was hoping to get some feedback. I hate to tap my rockers out to 8MM only to find out I can't make them work. It is also possible that the rocker might need to be shaved on the underside where the adjuster protrudes from it. I guess I should start looking for some donor rockers to mess with if I want to try it.
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Re: Ball-swivel rocker adjusters

Postby swooshdave » Sun Jan 08, 2012 2:01 pm

rvich wrote:I have also been looking at these...

http://vwparts.aircooled.net/Porsche-Va ... juster.htm

It took me a while to find the Porsche variety as opposed to the Chinese knock-offs.


http://vwparts.aircooled.net/Bugpack-s- ... p/4010.htm

These might work, and are a lot cheaper. And recommended by the same place selling the Porsche ones.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

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Re: Ball-swivel rocker adjusters

Postby 72Combat » Sun Jan 08, 2012 3:12 pm

I ran them on my 1776 VW Westy for 30000kms. They apparently give the ends of the valves an easier life and thus make setting the gaps easier....more accurate.
I did however have a clip break on the rocker shaft and by the time I noticed it the swivel foot was well and truly munted itself on the valve stem..... I think they fall under the " looks like a great idea but do I really need them "
The rockers need to be packed up for the increased height.
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Re: Ball-swivel rocker adjusters

Postby splatt » Sun Jan 08, 2012 10:25 pm

Apparently the genuine porsche ones dont fail, thread roughly the same pitch but 1mm bigger, 8 x1mm , the valves would need to be shortened like t160's were. Check out YA()&*o&%^HA SR 500 forums, the KEDA ones look like they would screw in from the top.
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Re: Ball-swivel rocker adjusters

Postby stockie2 » Wed Jan 11, 2012 2:03 am

Guys, When I had a Triumph triple these items were discussed and I think used. The Porsche style are favoured, because oil can gravitate into the ball joint. The type with the ground ball in the end of the adjuster were actually fitted to T160's as standard, but usually gave trouble and were replaced in the day with mushroom head or T150 style.

I would go for the Porsche type.

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Re: Ball-swivel rocker adjusters

Postby john robert bould » Wed Jan 11, 2012 2:20 am

High rev's or a missed gear can cause the ball to rotate, [valve float] once off the ball flat the valve is kept open. RGM once stocked them.
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Re: Ball-swivel rocker adjusters

Postby lynxnsu » Wed Jan 11, 2012 12:13 pm

john robert bould wrote:High rev's or a missed gear can cause the ball to rotate, [valve float] once off the ball flat the valve is kept open. RGM once stocked them.


i have a set in stock and for some reason could not use them , but cannot remember why
anyone who wants them can have them for the postage (belgium )
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Re: Ball-swivel rocker adjusters

Postby rvich » Thu Jan 12, 2012 8:09 am

I've chickened out and ordered some mushroom adjusters. Basically I decided that adding extra moving parts to the valve train was a bit scary and that it might be one of those projects of diminishing return.

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Re: Ball-swivel rocker adjusters

Postby comnoz » Thu Jan 12, 2012 12:20 pm

rvich wrote:I've chickened out and ordered some mushroom adjusters. Basically I decided that adding extra moving parts to the valve train was a bit scary and that it might be one of those projects of diminishing return.

Russ


Darn- I wanted to watch. Jim :D
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Re: Ball-swivel rocker adjusters

Postby rvich » Thu Jan 12, 2012 12:34 pm

comnoz wrote:
rvich wrote:I've chickened out and ordered some mushroom adjusters. Basically I decided that adding extra moving parts to the valve train was a bit scary and that it might be one of those projects of diminishing return.

Russ


Darn- I wanted to watch. Jim :D


I sorta figured that if you haven't done it yet that it is probably a waste of time...but if you have a spare head laying around for me to experiment on, just drop it in the mail and I will let you know.

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Re: Ball-swivel rocker adjusters

Postby comnoz » Thu Jan 12, 2012 1:02 pm

rvich wrote:
comnoz wrote:
rvich wrote:I've chickened out and ordered some mushroom adjusters. Basically I decided that adding extra moving parts to the valve train was a bit scary and that it might be one of those projects of diminishing return.

Russ


Darn- I wanted to watch. Jim :D


I sorta figured that if you haven't done it yet that it is probably a waste of time...but if you have a spare head laying around for me to experiment on, just drop it in the mail and I will let you know.

Russ


I experimented with a set with the flattened balls one time that were made for a VW engine. They were a dramatic failure. With the 2s cam I was running at the time they would not stay flat side down. I tried some S&W triple valve springs to cure it but they still flipped over.

I don't remember exactly how many taps I destroyed trying to tap the rocker arm holes out to 8mm but it took at least 2 taps to get through each arm. The case hardening on the arms is pretty tough. Jim
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Re: Ball-swivel rocker adjusters

Postby Webby03 » Thu Jan 12, 2012 4:04 pm

rvich wrote:I've chickened out and ordered some mushroom adjusters. Basically I decided that adding extra moving parts to the valve train was a bit scary and that it might be one of those projects of diminishing return.

Russ


I would tend to agree, I have never tried them but I don't like the idea of adding extra weight and an additional part that could fail to the valve train. I have mushroom type adjusters fitted to my T120 and they work well (over 3K miles). However I would be temped to chuck them in the lathe and turn down the heads so they could be unscrewed without removing the rocker boxes. It may also save a little weight :D

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