The Curta.org Bulletin Board Forum Index The Curta.org Bulletin Board
Welcome to the Curta.org Information Exchange Forum for the Curta Enthusiast Community
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

How smooth is smooth ?

 
Post new topic   Reply to topic    The Curta.org Bulletin Board Forum Index -> General Questions and Help
View previous topic :: View next topic  
Author Message
Alan Vos



Joined: 21 Oct 2011
Posts: 6
Location: UK

PostPosted: Fri Oct 21, 2011 7:57 pm    Post subject: How smooth is smooth ? Reply with quote

I have just acquired a Type II #523768. The mechanism seems to work well, but how smooth is smooth? I am trying to figure out if it is worth getting it serviced. I have never handled one before, so I have no reference.

With all 0s on the input slides, the crank rotates very smoothly and easily, with a slight whirring noise and very positive stop at the end. Adding small numbers, I can feel something, but no noticeable additional force is required. Subtracting 1 from 0, so that everything is working flat out to make a load of 9s does require considerably more force, but is still easy and . I can do that using the tip of my extended little finger with no difficulty.

Other than a best quality Curta, is there anything I can measure against ?
Back to top
View user's profile Send private message
murff



Joined: 27 Oct 2009
Posts: 592
Location: Switzerland

PostPosted: Sun Oct 23, 2011 11:14 am    Post subject: Reply with quote

Your description sounds smooth Smile

It seems that your 48 year old Curta is running very well...
Once you will have a second or third Curta you will note slight differences.
In general older Curtas are less smoother than the newer ones.
_________________
:: m u r f f
:: curta.li
Back to top
View user's profile Send private message Visit poster's website
Alan Vos



Joined: 21 Oct 2011
Posts: 6
Location: UK

PostPosted: Mon Oct 24, 2011 12:34 pm    Post subject: Reply with quote

Thanks for your advice. I shall not be sending if for service, not needed at present.
Back to top
View user's profile Send private message
Alan Vos



Joined: 21 Oct 2011
Posts: 6
Location: UK

PostPosted: Thu Oct 27, 2011 12:02 am    Post subject: Reply with quote

I figured a way, though a risky one, to assess the mechanism How fast can I turn the crank ?

Adding 1 (to both result and counter), four turns per second. Subtracting one (from both), three turns per second. I could probably go faster, but don't intend to try. If something does jam, that sort of speed will do serious harm.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    The Curta.org Bulletin Board Forum Index -> General Questions and Help All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group