custom manual cam chain adjuster

[devilsyam]

[pilgrim]

Wish I'd had one of those when the spring in mine let go.
Would have saved me nine bent inlet valves

[devilsyam]

will b avaliable shortly few tweeks yet this is the sample so save ya pennies to save anonther 9 bent valves

[cable tie]

Thats a great idea  , we used to do this conversion on enduro bikes, for little cash it saved alot of hassle when things went pete tong.

[Gray fox]

Looks interesting, but how do you set the correct tension?

[devilsyam]

easy

remove our existing un look inside you will see the guide dont turn the motor over
screw the thread inwards till base plate moves away from block back off half a turn and nip up allen keys
start motor turn anti clockwise till ticking sound is heard you will know very audable
turn clock wise till ticking goes but no more then nip all up job done

[joe43]

Ticking sound eh... sounds familiar :-(
Better check my tensioner this evening...

I'll put my name down for one of these please - any ideas on cost / when the first batch will be created?

[fireblake]

How do you know if the one fitted works, what makes them fook up?

[devilsyam]

tbh i have heard of three failing in as many years and thats just the ones on here - the springs fail or they stick
as i said this is a prototype going to shorten the rod as to long and fettle it a bit

[joe43]

The Haynes manual says something like - pop the top off and use a flat head screwdriver to check that the piston (which is threaded) moves back and forth smoothly. Replace the sealing washer when finished checking. The task is marked as 'four spanners' which means it is challenging.

It seems to me like it relies on a spring to automagically take care of things.
In reality, if it failed or got stuck, it could be curtains for the engine. devilsyam's adjuster would need to be checked periodically, but removes the possibility of the engine automagically lunching itself.

[Kosmic Kartman]

@ Joe 43

Totaly agree.

If it moves and it wears out check it periodally, regardless of whether it's self adjusting.

[JZS 600]

So, being a bit thick here, how do you access the piston?

[phil on a fazer]

great.....after reading this thread im now worried about my engine blowing up! 
 
shes on 31K and had the valves checked at around 27K....apart from that shes had no engine work done.

[devilsyam]

im not scare mongering here i have had this made as for me it's a upgrade with a bit security built in - yours may never have issue and there was nowt wrong with mine - call it belt n braces
as with all bits i do i do a run maybe 20 odd justify's the cost of cnc design etc
if they sell they sell if not i still have mine and they fit the r1's as well early uns

they will be about 40 quid when done but wont be for a while as this as i keep saying is just the prototype
i need to tweek the astheatic's a bit