skywatcher primary mirror adjustment??

[johnny diamond]

can anyone tell me if my primary mirror should have springs on the adjustment or just the rubber Orings

[Stephen]

Most likely just o-rings (at least on the 200P dob and explorer and 150P I've had a play with.)

[johnny diamond]

thanks Kh3ldar, i was wondering if fitting bob's knob's and springs was a good or bad idea

[Stephen]

thanks Kh3ldar, i was wondering if fitting bob's knob's and springs was a good or bad idea

I don't know if Bobs springs are compatible (I see no reason why not as I'm fitting them to my Altair/GSO) but springs make a lot of improvement if they are strong enough.

On my 200P I fitted Bobs collimation bolts and some other sourced springs in place of the o-rings.

I don't even need locking bolts on that now, it holds exceptionally well.

[Stephen]

Here's a pic of what I did

http://stargazerslounge.com/discussions-scopes-whole-setups/148344-replacement-mirror-cell.html#post1880554

[johnny diamond]

that looks just the job!!! do you mind telling me where you sourced the springs please?

[Stephen]

Gas Struts, Springs, Accuride Drawer Slides, Hinges, Latches & Handles, UK

Part number SC229

The only warning is the delivery is more than the springs themselves

[Tinker1947]

£6.95 delivery next day if the order is under £200, the 3 springs i clicked just a wild guess come to £1.49, there's no cheaper delivery option...

[johnny diamond]

thanks fella's think im finaly getting somewhere now!!

[johnny diamond]

just to finish this thread off, (if anyone was interested in the outcome!! )

Kh3ldar was kind enough to assist with a few details and having ordered the springs and bolts i had a little play today,spot on easy collimation without constantly having to play with two bolts at a time,being a belt & braces type i made up 3 lock bolts also for added security...thank's again everyone & especialy Kh3ldar your a gent!!

[Stephen]

Glad to hear you've got it sorted

[dardano]

OMG ! For 3 springs, shipping to canada is £67.00

[LeeB]

All my scopes have been upgraded by using radio control 1/10th scale springs, they are available in a number of strengths are plastic coated and the collimation holds very well, £10 should get a good set and they last forever. We all know anything with the word astro after it costs more than it should.