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Author Topic: Lavezzi VKF sprockets for Prevost? Robert Throop Master Film Handler Posts: 412 From: Vernon, NY USA Registered: Jun 99 posted 12-31-2005 09:09 AM                     The P70 intermittent sprocket is keyed like a Brenkert. Bob  |  IP: Logged Matthew Taylor Expert Film Handler Posts: 186 From: Essex, UK Registered: Mar 2004 posted 12-31-2005 12:28 PM                     Actually my one doesn't have a notch - here's a couple of photos;  |  IP: Logged Will Kutler Phenomenal Film Handler Posts: 1506 From: Tucson, AZ, USA Registered: Feb 2001 posted 12-31-2005 12:39 PM                     Hi Mark Here are some helpful machining solutions for you. If you need to indicate a part in on a 4-jaw chuck, but the part you are needing to work on cannot be marked-up because the holding surface is already finished, you can always make up a simple "split-sleeve" out of aluminum. It would resemble an AW-3 Center Ring...but the i.d should be the same as the work od before using the bandsaw to cut the slit. But I also love potting/chucking collets....as well as making lathe "soft-jaws". Ya, turning 55c-60c Rockwell on you lathe is quite a chore. It can really bog down your lathe, especially if you have a lower h.p. motor and lite gear train. You can always put an i.d or o.d grinding wheel onto your quick-release tool post. Keep in mind that Atlas actually made a grinding attachment for their lathes. The only bad thing about grinding on a lathe is that the grinding dust-debris can be bad for your ways, gibs and other parts, so cleanliness is very important. Cheers K  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 12-31-2005 12:40 PM                     MAtthew, If you can do with a top notch CS type sprocket ours should work just fine for you. At least its a hardened sprocket and would give longer life span than the non-hardened Italian sprockets typically do. Unfortunately the Brenkert sprockets are an unobtanium item these days unless you happen to find a NOS one laying around, Wolk may possibly still have a few there on the shelf, there may also be a few down in the CLACO dungeon. The Brenkert too is a CS type sprocket. The Phillips 35mm sprocket will work fine but it has a ludicrous dealer net of over 400.00 per unit from BL&S!! Apparently US Kinoton decided not to have any more 35mm's made up made up state-side and now only supplies the costly German made 35mm sprocket. Thats why we had our own made up... at a fraction of the cost of the German made sprocket. Ditto for the gate bands and curved "James Bond" runner which we also had custom done and stock considerable numbers of in house. Our gate bands definately resist the grooving effect thats typical of the Kinoton supplied 35mm gate bands and hence ours have a far longer life span at much lower cost to the customer. All parts fit in place with no modifications required to the projector. Will, Thanks for the tips. If I have to do this sort of thing again to proto something I will have it ID ground to just unbdersize and then lap it opt to size myself. I did do the VKF sprocket bore in a split bushing in the 4 jaw chuck. Took me about 2 hours start to finish... good enough accuracy for a holdback or feed sprocket but not for an intermittent sprocket. Grinding the I.D., then honing or lapping the bore to exact size would be the only way on that part. Plug gauges would be needed to verify the I.D.!! Plus one would need at least a Hardinge HLV in top notch shape to maintain the accuracy. Mark  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 12-31-2005 01:32 PM                     typically prevost sprockets have a good life span  |  IP: Logged Matthew Taylor Expert Film Handler Posts: 186 From: Essex, UK Registered: Mar 2004 posted 12-31-2005 02:17 PM                     Mark, I have sent you an email. Gordon, the sprocket currently in there is not a Prevost-made sprocket. The old one I had was, but the teeth were hooked.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 12-31-2005 03:58 PM                     While certainly pricey for US machines...the Kinoton intermittent sprocket for FP20/30 machines (not the "E" series which are 32-tooth)...are not over $400 dealer as has been posted above...they are $461.00 LIST price. Remember too that anything that comes to the US via Europe has a hefty 20-25% currency difference added on. Most of 2005 was trading at $1.25 to the Euro.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 12-31-2005 04:06 PM                     Yea Steve but they USED to have them made over here and they were alot less expensive... when stuff is that rediclously expensive that shouldn't really be, thats the general route one takes..... We did and ours list for about $200.00 per unit.... Less than your cost from them... a slight difference in price for the exact same, or possibly better quality part. Really, there's absolutely no reason under the sun they couldn't do what a small dealer can do in an effort to maintain reasonable parts for their customers, or I guess they just don't want to expend the effort. Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 12-31-2005 04:19 PM                     Kinoton in the US has off and on had such parts made domestically...especially the Norelco AA2 sprockets. We have a fair number Kinoton and Norelco badged FP20s running and the sprockets just haven't been wearing out to the point it has come up. If Kinoton America found that they were needing to supply volumes of sprockets, then I would think they would seek out domestic production...then again I'm sure Larry Shaw who frequents here could answer that one if he so inclined. I noted that LaVezzi has the Kinoton FP38E sprocket on their display and in print adds so I presume they make it for Kinoton...at ShoWest they said was an OEM part only though. As to the price...the purpose of my post was to correct a mis-statement..dealer cost is in fact not over $400 for the part and is in fact notably less.  |  IP: Logged Will Kutler Phenomenal Film Handler Posts: 1506 From: Tucson, AZ, USA Registered: Feb 2001 posted 12-31-2005 06:20 PM                     Hi Mark I sent you a few p.m.'s via F.T. with some info for you. Did you get them? Regards K  |  IP: Logged Matthew Taylor Expert Film Handler Posts: 186 From: Essex, UK Registered: Mar 2004 posted 01-01-2006 02:17 PM                     Mark, did you receive my email with q's about your sprocket?  |  IP: Logged Larry Shaw Expert Film Handler Posts: 238 From: Boston, MA, USA Registered: Mar 2000 posted 01-19-2006 09:52 AM                        The reason we (Kinoton America) no longer have the 35 only sprockets made is simply lack of demand. Sadly, likely due to incompetent operators, there are far fewer DP-70/AAII's in operation now, however most of the remaining users apparently want to retain the 70 capability based on what they order from us. Larry Shaw Kinoton America [Exclusive North American Distributor of Kinoton GmbH] 8 Goodenough Street Boston, MA 02135-1903 Tel: 617-562-0003 x104 Fax: 617-787-4253 E-Mail: larry@kinotonamerica.com Website:http://www.kinotonamerica.com  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-19-2006 10:11 PM                     Donno Larry, I only know of two locations that run with the combo sprockets any more.... out of about 120 or so machines that I am aware of that are in daily use..... that location is one of just a few left that regularly runs any 70mm. Mark  |  IP: Logged

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