John Carlos, As they say in the Lion King movie - 'Hakuna Matata'. If it jammed up 200 metres away then you would just have to go and tickle the lion under the chin while you fixed it - no worries. ;-)) I have found the reference to testing... Prochnow's booklet - 'Rolleiflex SL66, the Story of a Successful Camera System' - Let me know off list if you would like a PDF copy. On P14 - "The endurance tests lasted several days. ...simultaneous testing of a number of cameras (SL66) until something eventually broke. For the twin lens, we had developed the 'Rolleimot', a motor designed to provide film advance and shutter release... That gave us the idea of using this device for the endurance tests. Ten Rolleimot units were taken from stock and put to work." So they had been developed for the TLRs and adapted to test the SL66 cameras because they had a number of Rolleimots in stock which were not selling. I knew I'd read something about testing cameras somewhere but it wasn't the TLRs. John -----Original Message----- From: rollei_list-bounce@xxxxxxxxxxxxx [mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of CarlosMFreaza Sent: 05 April 2010 23:46 To: rollei_list@xxxxxxxxxxxxx Subject: [rollei_list] Re: Rolleimot 2010/4/5 CarlosMFreaza <cmfreaza@xxxxxxxxx>: <...It seems that Rolleimots had some type of problem with the film transport and it was necessary to disconnect them to start again...> I did not write the word "if" above, "...if had...", if the Rolleimot arm linked to the camera crank became stiff/jammed for some reason, it was activated an "overload" switch and the arm did not return to the regular position, it was necessary to disconnect the Rolleimot to do it; this could be a serious problem if you were operating the Rolleimot from 100-200m with the remote control, there was no way to try to solve the problem except disconnecting the unit. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list