10:1 crayford on Saxon/Sky watcher dob

[danielsun]

I have successfully fitted a crayford 10:1 crayford focuser to my saxon 10" dob without the need of drilling any extra holes in the tube or having to use an extention tube.
In the photos below you will see that the base mounts on both focusers can be removed, so i have been able to turn up an adapter bush to go from the original r&p focuser base plate fit to the new crayford and give it the height needed for normal focus travel.
The only minor mod you must do is drill and tap two M4 threads in the under side of the focuser base plate as shown in the pics and the new adapter sleeve will need 3 M4 holes drilled and tapped to hold the new crayford to it.
Lucky for me i was able to get access to a lathe and the material cost about $60.
It may cost a bit to get an engineering shop to turn one up but i think its the best way to go to do it properly.

[danielsun]

I forgot to show the pic on drilling and tapping the M4threads into the r&p focuser base plate and here is a basic scetch of the sleeve with a couple of dimensions missing but if anyone wants to have a go i can re draw the sketch properly.

[janoskiss (Steve H)]

That's great Daniel. Unfortunately beyond the scope of my abilities.

[ving (David)]

Originally Posted by janoskiss

That's great Daniel. Unfortunately beyond the scope of my abilities.

no pun intended hey?

quite beyond me too, but escellent job there

[Starkler (Geoff)]

Great job

Once you go fine focus, you'll never go back

[CoombellKid]

Originally Posted by Starkler

Great job

Once you go fine focus, you'll never go back

Just having something better than the $5bin R&P that
came on my Saxon 8" newt, would be a plus. They dont
get better with age, and cant really handle my premium
ep's. I must get off my behind and get one of these.

Daniel, thanks for sharing, you have done well.

regards,CS sunny days

[Dave47tuc (David)]

Nice job Daniel well done

[danielsun]

Thanks everyone for the positive feedback

Originally Posted by Starkler

Great job

Once you go fine focus, you'll never go back

Your not wrong Geoff, after giving it a test run it was great!!!

Originally Posted by CoombellKid

Just having something better than the $5bin R&P that
came on my Saxon 8" newt, would be a plus. They dont
get better with age, and cant really handle my premium
ep's. I must get off my behind and get one of these.

Daniel, thanks for sharing, you have done well.

regards,CS sunny days

Thanks Rob, the bonus with the 8" saxons/skywatchers is that i'm pretty sure that they bolt straight on without the need of any adapter and no need to drill any new holes.