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JJ's book finally arrived end of last week (yaaaah, the delay wasn't quite as long as I'd expected). I've been very busy with marking but have managed to get through to around chapter 6. There have been a few surprise to date. One thing that the group may be able to clarify. On a number of pictures the mouth peice from the backup reg is shown pointing away (out) from the diver. Presumably as the diver swims along the mouth peice would point forward (rather than the front of the reg/diaphragm). If this is intentional the only way I can imagine it would be acheivable is to have the bungie loop on the regulator side of the cable tie rather than on the mouth peice side (as I presently have it and as it appears on other web sites I've seen). I'm probably not explaining this well. The following image from the WKPP site shows how I currently attach the necklace (except I use bungie cord and have knots in each end of the cord to stop it coming off easily, the bungie cord is less elastic). http://www.wkpp.org/images/pina_equip/backup_reg_attach_r.jpeg In the alernate model the loose ends of the cord would point toward the diver/mouth peice. The loop would be toward the second stage but would obviously have to bend back round to loop round your neck. I could envisage a few advantages: 1) Presumably in this position free flow would be unlikely as water flow into the mouth peice would push the diaphragm out (and the valve closed). Or at least the diaphragm would face down and back rather than forward. 2) May be easier to pickup with your mouth? Would obviously need to try this. 3) I find (particularly since I use bungie cord) that the mouth peice is pulled out a bit by repeated donning and doffing, never come off altogether mind but I am careful. Now and again I need to push it back into place. Attaching the loop the other way round would obviously have the reverse effect and eliminate the chance of pulling the mouth peice off unintentionally. Am I making a mountain out of mole hill (on the basis of one or two pictures)? I can/will obviously experiment myself to see if this works but would love to hear advice on this one. Cheers, Simon Simon L Hartley EnvSM Website Coordinator\First Year Course Coordinator Associate Lecturer School of Environmental Science and Management Southern Cross University P.O. Box 157 Lismore NSW, Australia 2480 Ph: (02) 66203251 or (61 66) 203 251 Fax:(02) 66212669 E-mail: shartley@sc*.ed*.au* http://www.scu.edu.au/schools/esm/staff/pages/shartley/ http://www.scu.edu.au/schools/esm/ -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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