Hi Keith, Glad you are aboard. As an engineer, I know that a good answer is sometimes not as valuable as a good question. The latter promotes discussion, and produces different, possibly

Well, Not all of us had the opportunity to develop our natural intelligence! So when I have the help of people like you and Roland to pull off incredible feats, I just like to be appreciative. At

Hi Greg, The COD was to cover Canadian sales taxes (GST & PST), as well as a relatively small, perhaps reasonable, UPS brokerage service fee (and GST) of about $150 CDN. I posted this

Hi Roland, You beat me to the punch line. No difference at all to the center of the fulcrum arm assuming no deflection (I think a safe assumption for your mount). Since I am writing, here are the

Sorry to hear about your experience. I've got an AP900 on the way. Why was there a COD? Greg

Well, I just had a nightmare experience with FEDEX delivering my AP 600E mount, so don't trust them either. Jerry

Hi, I just wanted to warn folks about putting too much faith in the way some couriers deliver expensive goods to you - like your brand new, very expensive telescope mount. My AP900 just

... You're welcome ... ;-)

Thanks, Wont worry about it. I was just wondering if it had an effect. Thank god for all the enginers of the world:-) Keith, some 18 stress BUT - really

Thank you Gilles and Roland for the very fast reply. If I will find something interested I will post here. Clear skies from polluted Shanghai Marco ----- Messaggio originale ----- Da:

Hi All, Roland's elegant answer is simple, and true. However I see from some of the other posts that there is a great misunderstanding of the basic physics and engineering of the use of counter

It's easier to move the weights chooked up, less leverage for the motors to overcome...joe :)

Dear all, I believe to have found here in China a nice box that could be adapted to store and carry around my 900GTO. Unfortunately I don't have the head dimensions here with me and I won't be back to

writes: Actually, the leverage would be the same. 1lb at 10 inches = 1/2 lb at 20". Both have a rating of 10 inch-lb. The motors do not see the torque of a counterweight because it is balanced by

Dans un e-mail daté du 10/04/2007 12:48:44 Paris, Madrid (heure d'été), marcolorenzi70@... a écrit : Dear all, I believe to have found here in China a nice box that could be adapted to

marcolorenzi70@... writes: The max width dimension is approximately 9 inches on the 900 mount. Rolando ************************************** See what's free at http://www.aol.com.

esteskkkk@... writes: It makes little difference either way. Rolando ************************************** See what's free at http://www.aol.com.

That's a good point, Mark. I hadn't considered the pivot point being overloaded. But if the pivot point is balanced on either side (OTA versus weights), then the amount of stress would be very

Some years ago at the WSP I was asking this same question A few of the people who were also Engineers had dome some mathematical calculations on this, and found that if you put the bulk of the weight

Hi Keith, Good question, I too was thinking about that last week. The trade off is you can use a smaller weight farther out - let's say near the end of the bar. In some mounts, with thinner