Jeff, I had a FLS wade built motor powered winch with a wide drum that I used with mono for F3B and with braided 200 lb test line for TD. this winch had a 1/2 inch dia threaded stainless steel rod as a resistor to make it F3B legal and it was never disconnected.
1) You can't hurt the S/S rod with the heat generated by the hardest use at a contest and, 2) you won't hurt the motor, brushes or any other part of the motor with the S/S rod. 3) You will find that you can launch any of the current breed or future sailplanes with this package assuming the use of a properly built FLS motor on braided 200 lb test line. 4) Battery life will depend on the battery capacity you choose. Small chargers on the winch line and a small generator near by all but eliminates that question. Jeff, I have done this and I have built a new winch that will prove again, my plan to be workable. Bosch motors used in F3B may not provide the same power that the FLS motor can using braided line due to the larger armature and field dia's on the FLS motor but here again, the motor of choice in the US is the FLS so until we get off our cans and start experimenting with the variables what will get done. I have started with my testing again, HAVE YOU ? Let us know when you have some results to report and I will do the same. Regards, Dave Corven. -------------- Original message ---------------------- From: Jeff Steifel <[EMAIL PROTECTED]> > Without knowing for sure, I don't think we want the same resistance as > the F3B winches. > The F3B winches use mono so they get power from that, and the FLS draws > way more amperage, so if we resistor down to where the F3B winches are > the resistors will probably get smoked... > I would think we would want a little less resistance to overcome the > lack of mono, and higher draw of the FLS. > > One of the Electrical engineers could probably come up with a decent > resistance. I'd expect it to be a small , but as my F3B teacher has > taught me a little change is a lot of power. > > [EMAIL PROTECTED] wrote: > > Long, but read it anyway. > > > > Tension limiter discussions come and go and even the simplest concepts not > only add a substantial cost to each winch an more potential failure points > which > could put a winch in a contest situation down for the day, where a broken > line > can usually repaired within a few minutes. > > Two things that we can do to stanardise winch power, minimize line breakage > and make winches more user friendly are: > > > > 1 ) A simple 1/2 stainless steel threaded rod installed between the FLS and > the power from the solenoid can be adjusted to provide the resistance specs > for > F3B winches. > > > > Remember that the resistor rod is threaded so adjustment is simple with a > > pair > of jam nuts. There are a few checking devises for F3B winch certification > that > should be available to proof the setup. AMA has one. > > > > The target setup should be the same as current (pun intended) requirements > > for > F3B winches for a standard and then any winch could be used for all TD > comps,an > F3B comp and possibly to run an F3J comp also. The stainless rod is also > unaffected by the heat generated by contest loads and cannot fail during > heavy > use. > > > > Also the cost can't be more than $10 to $12 per winch. That reads CHEAP ! I > have done this mod thee times and and can testify to it's ease of > installation > and cost. > > > > 2 ) The slightly lower power achieved above, and I mean slightly, allows > > for > lower lb test line which will cost less and more importantly allow some > stretch > at the launch release giving the pilot a better choice on the amount of line > tension preferred, instead of jerking the sailplane out of his hand. Also > could > be an easier launch with the more fragile wood constructed sailplanes. > > > > This mod has been done 3 times by yours truly with successful results. I > > see > where Mr Hands Off Retriever fame, Rick Botha is supplying the SWC comp with > a > winch resistor system and that will be the start of something. We have to > quit > talking about this and get it done. > > > > I propose that we get the Soaring Nats winches resistorised for this years > Soaring Nats and with lighter line than the 300 lb test line that we have > migrated to this last year. > > > > Regards, Dave Corven. > > Also Merry Christmas and a Happy New Year. > > > > -------------- Original message ---------------------- > > From: Marc Gellart <[EMAIL PROTECTED]> > > > >> From what I have seen in this thread, the two real simple, straight > >> forward > >> suggesions seem to be, lower capacity batteries like used in B, and > >> lighter > >> line, like 200# (which the Dayton club already uses and it works just fine > for > >> them except they have a great grass field and and no humps in it). > >> > >> Personnally I just hate downwind launches (my problem huh?) and tension > limiters > >> sound worse than retrievers to keep working correctly. I am really > interested > >> to hear how SWC goes to see how Rick's resistor set up works, that might > >> work > >> just fine. > >> > >> I've had my arse chewed on privitaly about somethings here, heh, these are > just > >> ideas, right? Still wished we all had the B winches though, then there is > >> no > >> problem. > >> > >> Marc > >> > >> Have a great Christmas, and holiday with your families! > >> RCSE-List facilities provided by Model Airplane News. Send "subscribe" > >> and > >> "unsubscribe" requests to [EMAIL PROTECTED] Please note that > >> subscribe and unsubscribe messages must be sent in text only format with > >> MIME > >> turned off. Email sent from web based email such as Hotmail and AOL are > >> generally NOT in text format > >> > > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and > "unsubscribe" requests to [EMAIL PROTECTED] Please note that > subscribe and unsubscribe messages must be sent in text only format with MIME > turned off. Email sent from web based email such as Hotmail and AOL are > generally NOT in text format > > > > > > > > -- > Jeff Steifel > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and > "unsubscribe" requests to [EMAIL PROTECTED] Please note that > subscribe and unsubscribe messages must be sent in text only format with MIME > turned off. Email sent from web based email such as Hotmail and AOL are > generally NOT in text format RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
