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How long will last motor, designed for 1.2m dish, with 1.5m dish?Information exchange on LNBs, Single satellite, motorised and multi-satellite systems. DiSEqC switches, positioners, motors, actuators, dish-alignment etc. | |
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14-07-2009
| #1 | ||
| Specialist Contributor  Join Date: 09-09-2008 Location: Republic of Georgia
Posts: 914
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My System: Covering 30W-105.5E range, two motors, C and Ku band. Various receivers/cards/cams/etc. |
Hello. I have SG-2080 motor, according to manual, it can take dishes up to 1.2m. I want to equip it with 1.5m fortec star dish. Motor will be moved very rarely, say, 2-3 times per week. Will it last for year at least? | ||
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14-07-2009
| #2 | ||
| Toute Ronde Bon Oeuf  Real name: Gordon Join Date: 29-05-2009 Location: North Yorks Moors
Posts: 1834
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My System: Triax 1.1m and Orbital 80cm Motorised Dishes. Various fixed Dishes. Eclectic selection of Digital and Analogue Receivers. Complex switching and distribution that SWMBO cannot fathom. Nor me. | That depends: How sheltered is the site? I had a 1.1m Dish on a 1.2m specified H-H Motor and had to relocate it pronto from a house wall to a ground mount in a sheltered spot because I was not at all happy with it in even moderate winds. Wind loading affects the motor even when not in use, of course. Also, the specified size limitation on the motor needs to be tempered with consideration of the weight of the particular Dish. | ||
| Last edited by Tivų; 14-07-2009 at 10:21 AM. | |||
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14-07-2009
| #3 | ||
| Super Moderator  Real name: Mark Join Date: 17-05-2007 Location: Kent,UK
Posts: 4496
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My System: TM6800HD, TM1000, TM600 Linux,TM5200, TM2200 motor, Triax TD110 dish + Fortec 85cm. Meter=Satlook Micro+G2 NIT | Yes,depends on the weight. I had a Triax TD110 on a small Stab for 90cm dishes, it worked well for almost 2 years. But then I put a 90cm Fibo on it, and it sh&gged it. (fibo very heavy) Don't know what the FS 1.5m is like, but their 90cm is very flimsy and light. | ||
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14-07-2009
| #4 | ||
| Believe it when I see it Admin.  Real name: Rolf Join Date: 01-05-1999 Location: Southern England
Posts: 29868
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Blog Entries: 5 My System: Pace Sky HD, DM7000s, CubeRevo 3000HDPVR, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Televes H45 Digital Spectrum analyser. | The 1.5m fortecstar is quite heavy, but more important is the surface area and the way the dish will swing when moving, it is just as likely to strip or jam the gearing. | ||
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14-07-2009
| #5 | ||
| Specialist Contributor Join Date: 11-09-2008 Location: 38.5šN, 0.5šW
Posts: 712
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My System: Gibertini 1.5m, Jaeger 1224, Vantage x221 TS CI... Fibo 90, Mot-Sat3, Manhattan Plaza XT-M... Satcatcher Excel-TV, Lacuna Mk4 | 1.5m dish has got 56% more surface area than a 1.2m. Also a 1.5m dish need a 3" fixing or the wind will just turn it. | ||
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14-07-2009
| #6 | ||
| Specialist Contributor Join Date: 09-09-2008 Location: Republic of Georgia
Posts: 914
Thanks: 14
Thanked 261 Times in 199 Posts
My System: Covering 30W-105.5E range, two motors, C and Ku band. Various receivers/cards/cams/etc. | I don't know exact weight, but I can lift that dish with one hand without any problems, maybe around 10-15 kg? This dish will be used for DXing, stable reception is not required, so wind instability can be ommited. | ||
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14-07-2009
| #7 | ||
| Specialist Contributor Join Date: 11-09-2008 Location: 38.5šN, 0.5šW
Posts: 712
Thanks: 12
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My System: Gibertini 1.5m, Jaeger 1224, Vantage x221 TS CI... Fibo 90, Mot-Sat3, Manhattan Plaza XT-M... Satcatcher Excel-TV, Lacuna Mk4 | I've got a donkey. His old owner says he can carry 150 kilos of firewood but I want him to carry 250 kilos. How long do you think it will be before he dies of exhaustion? By the way he doesn't need to be reliable because I'm only going to make him do it 2 or 3 times a week. | ||
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14-07-2009
| #9 | ||
| Super Moderator Real name: Mark Join Date: 17-05-2007 Location: Kent,UK
Posts: 4496
Thanks: 76
Thanked 635 Times in 602 Posts
My System: TM6800HD, TM1000, TM600 Linux,TM5200, TM2200 motor, Triax TD110 dish + Fortec 85cm. Meter=Satlook Micro+G2 NIT | Obviously, if the motor is 'dispensable' like my stab was, you could try it just for the hell of it. It was quite interesting hearing my motor tearing itself to death, the noise woke all the neighbours up. Wouldn't put a donkey through that though.  | ||
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14-07-2009
| #10 | |||
| Super Moderator  Real name: Paul Join Date: 07-05-2007 Location: South Midlands, UK & Lanzarote, Canary Islands
Posts: 4399
Thanks: 24
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My System: Zone1, DSI8215 SkyHD, Thomson DSI4214, TF5000CI, Dreambox DM800 HD PVR - Nab BH0.12, TM-5200D, Gibertini 104cm, SNH-031, 36v Actuator, Vbox-II, 42°E to 30°W, Sling Media, Televes H45 Digital Processing Analyser, Satlook Micro+G2 NIT, Rover SDM 1s |
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14-07-2009
| #11 | |||
| Amo Amas Amant Admin  Join Date: 18-11-2004 Location: Blackburn NW England (Siberia)
Posts: 11304
Thanks: 24
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My System: IDD CI24 ECONO MM Penta 1.20 Galaxy II 1.2Mtr Polar MTG yes it has been on the arc for 21 years and is still driven by a modified wiper motor from a Ford Anglia. It's like me sometimes groans but always performs  Saved us from the black plague of ignoratio elenchi, he awaits a special badge with jugs |
it has nothing to do with wind stability the problem that everyone is trying to alert you to is the reverse loading on the gears caused by the large surface area of the dish , this is multiplied in the same way as servo on a braking system works. A large area receiving a large force will equate to a small area as in the gearing receiving a massive force, in the same way as a stiletto heel on a dainty woman will make puncture marks in a floor covering. It would be foolish to say the least to attempt this. | |||
| War does not determine who is right, it determines who is left! Formerly toppervte33h whose six pack has turned into a keg Help support this web site by making a donation Or use other options to help support Sats UK Show Your Support by clicking the button  Thank you. Freddie Flintoff is back | ||||
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14-07-2009
| #12 | ||
| Specialist Contributor Join Date: 09-09-2008 Location: Republic of Georgia
Posts: 914
Thanks: 14
Thanked 261 Times in 199 Posts
My System: Covering 30W-105.5E range, two motors, C and Ku band. Various receivers/cards/cams/etc. | Yes, this motor is "disposable", I'm not aware what going to happen to it, just I'd like to estimate how long it will last with such load, day, hour, 5 minutes, 4 months or century?  | ||
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14-07-2009
| #13 | |||
| Specialist Contributor  Join Date: 23-07-2005 Location: S.Wales
Posts: 1663
Thanks: 181
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My System: 1.2M, & 55cm Gregorian Dish`s, 1.8m Precision dish Jaeger 1224 H-H motor.Dreambox 800, Vbox-II. SS2 Card. |
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14-07-2009
| #14 | |||
| Super Moderator Real name: Paul Join Date: 07-05-2007 Location: South Midlands, UK & Lanzarote, Canary Islands
Posts: 4399
Thanks: 24
Thanked 542 Times in 478 Posts
My System: Zone1, DSI8215 SkyHD, Thomson DSI4214, TF5000CI, Dreambox DM800 HD PVR - Nab BH0.12, TM-5200D, Gibertini 104cm, SNH-031, 36v Actuator, Vbox-II, 42°E to 30°W, Sling Media, Televes H45 Digital Processing Analyser, Satlook Micro+G2 NIT, Rover SDM 1s |
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14-07-2009
| #15 | ||
| Super Moderator Real name: Mark Join Date: 17-05-2007 Location: Kent,UK
Posts: 4496
Thanks: 76
Thanked 635 Times in 602 Posts
My System: TM6800HD, TM1000, TM600 Linux,TM5200, TM2200 motor, Triax TD110 dish + Fortec 85cm. Meter=Satlook Micro+G2 NIT | No pain no gain, in for a penny in for a pound, and all that, but only in my own back yard. | ||
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14-07-2009
| #16 | |||
| Member Join Date: 08-02-2008 Location: Surrey
Posts: 2
Thanks: 0
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My System: echostar ad 3006 ip with 5 foot dish 48east to 30 west. computer is a packard bell |
I loved the donkey story...I put a bigger dish on a small moter it lasted 1 year the right moter has been going strong now for 5 years now. | |||
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14-07-2009
| #17 | ||
| Regular Member  Join Date: 08-06-2009 Location: QTH: 47°55′43″N 23°53′33″E
Posts: 111
Thanks: 58
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My System: C BANDIT | Bombed One, 1.5m fortec star dish,is a offset dish?? Or am I wrong? If it is a offset go for an offset polar mount .I think I still have one in the cellar .I used it 5 years with a 100cm very good noname dish and got 42east-30west with a 12" actuator. Pictures of polar mount for offset tomorrow | ||
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14-07-2009
| #18 | |||
| Member  Join Date: 09-04-2009 Location: Buckinghamshire(H.Wyc)
Posts: 54
Thanks: 1
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My System: Moterk 2100a motor on 80cm dish,16'E-18'W Manhattan XT-CM receiver. Fixed Sky dish 28'2E |
I like what you wrote Senor Huevos | |||
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14-07-2009
| #19 | ||
| Specialist Contributor Join Date: 09-09-2008 Location: Republic of Georgia
Posts: 914
Thanks: 14
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My System: Covering 30W-105.5E range, two motors, C and Ku band. Various receivers/cards/cams/etc. | Hello Doctor The dish is offset one. There's one HUGE difference between me and you. You already have polar mount, while me - not. And I'm not planning to invest money in it, just trying to re-use existing stock of "expensive junk" (as my wife calls them) as much as I can. | ||
| Last edited by BombedOne; 14-07-2009 at 10:27 PM. Reason: missing word | |||
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| The Following User Says Thank You to BombedOne For This Useful Post: | doktorofsat (15-07-2009) |
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15-07-2009
| #20 | |||
| Toute Ronde Bon Oeuf Real name: Gordon Join Date: 29-05-2009 Location: North Yorks Moors
Posts: 1834
Thanks: 42
Thanked 170 Times in 164 Posts
My System: Triax 1.1m and Orbital 80cm Motorised Dishes. Various fixed Dishes. Eclectic selection of Digital and Analogue Receivers. Complex switching and distribution that SWMBO cannot fathom. Nor me. |
Much common ground there ............. | |||
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15-07-2009
| #21 | |||
| Regular Member Join Date: 08-06-2009 Location: QTH: 47°55′43″N 23°53′33″E
Posts: 111
Thanks: 58
Thanked 44 Times in 20 Posts
My System: C BANDIT |
Hello Bombed One As I promosed here is the picture with da polar mount for offset dish: _http://img505.imageshack.us/img505/9347/polarm.jpg "expensive junk" (as my wife calls them) .. does she have her own setup ?(dish , receiver..) maybe changed her mind | |||
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20-07-2009
| #22 | ||
| Specialist Contributor Join Date: 09-09-2008 Location: Republic of Georgia
Posts: 914
Thanks: 14
Thanked 261 Times in 199 Posts
My System: Covering 30W-105.5E range, two motors, C and Ku band. Various receivers/cards/cams/etc. | lol haha Generally when she starts arguing, I'm reminding her, how much we paid for her car, and how big dish I could buy with that money | ||
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