DIY vernier pulleys

[MiniLandy]

So after doing a bit of reading on cams, it seems that timing them in accurately is key to making them perform. Thing is, the cheapest vernier pulleys for the K series are about £140.

There seems to be enough meat on the standard pulleys to try something like this, does anyone know of it being tried?

[Oz]

What about offset keys ?

[InstantCustard]

Offset dowels, simples!

[MiniLandy]

I know you can get them, but don't you have to get them made up to the specific offset that you need? You can't just buy them like the range you can get for an A series, or can you?

[InstantCustard]

No, you'd have to figure out what degree you want or have a selection made.

[MiniLandy]

Hmmm. That'd work if you could afford to have the engine apart long enough to work out exactly what offset you need.

Got any thoughts on making the standard ones adjustable? The prototypes in that thread look a bit ropey, but the lasercut ones look workable.

[Oz]

Didn't Matt or Gaz have some made recently

[ardonfast]

http://www.16vminiclub.com/forums/sh...ad.php?t=32106

[Oz]

Thats the one

[Roverdose]

ive got something like that on my kv6. works well for me.

Drew

[MiniLandy]

ive got something like that on my kv6. works well for me.

Drew

The offset keys, or adjustable cam pulleys?

[kcchan]

By the time you've fucked around either drawing up CAD files and getting them laser cut and paid for materials or messed around with a drill, angle grinder and hacksaw, swearing because something is a mil out (then you have to make another matching one), you'll wish you'd have just spent the £140.

[gadget555]

And they would be made out of aircraft alloy, anodised and look very pretty.

[evolotion]

i made the keyway in two old pulleys twice as wide as they should be, and tried many combinations swinging both cams 2 degrees at a time till i was happy, the friction of the bolts is plenty to hold em tight if torqued to spec. once i found a happy place i'd then modify another set of pulleys so they doweled in that location. tedious, but cheap nowadays i value my time to much so would just buy very-near pulleys.

[MiniLandy]

i made the keyway in two old pulleys twice as wide as they should be, and tried many combinations swinging both cams 2 degrees at a time till i was happy, the friction of the bolts is plenty to hold em tight if torqued to spec. once i found a happy place i'd then modify another set of pulleys so they doweled in that location. tedious, but cheap nowadays i value my time to much so would just buy very-near pulleys.

I've heard about this method, and glad to hear you used it successfully Couple of questions though:

How many degrees adjustment did they give when opened out?
How did you re-dowel them permanently?
Have you got any pics?