| Author | Message | ||
| Charles (24.25.14.106)
Rating: N/A |
Can anyone recommend a source for the coupling to connect a generator head to an engine. One shaft is 1 inch and the other is 1 1/2 inch. The idea is to use a direct drive setup. Each shaft is horizontal. The engine is a 4 cyl diesel. | ||
| neil (64.12.105.154)
Rating: N/A |
Try WW Grainger or McMaster Carr Both of these are Industral supply houses. All bus Nuts should have a Grainger Catalog. Neil | ||
| Ross Carlisle (Ross) (207.88.97.52)
Rating: N/A |
"All bus Nuts should have a Grainger Catalog" I have an account there  | ||
| Peter (Sdibaja) (209.242.148.130)
Rating: N/A |
Are there any Grainger Retail stores in Calif? Here in Chula Vista (San Diego) there is a wholesale only store, you must have a sales tax resale number to shop. | ||
| John Biundo (Jbiundo) (67.112.121.112)
Rating: N/A |
Hi Peter, I believe Grainger's is direct business to business only. I was foiled a couple times, but finally managed to establish an account there without having a legal business. If you study the application, you'll note there's a way to provide your SS# instead of a tax ID#, and that will guide you as to how to classify your "business" (you must give them a business name -- but it doesn't have to be legally registered or anything like that). You might also try applying on-line at www.grainger.com. Anyway, I'm sure if you're persistent you'll be able to open an account there. I don't find Grainger's prices much lower than retail (they'll REALLY scrutinize you, and require a history of purchases you probably won't be able to generate, before granting you a volume discount price structure). But they're great for hard to find things, and their catalog itself is a real education. Well worth the effort to get an account. John | ||
| Peter (Sdibaja) (64.165.8.134)
Rating: N/A |
John: thanks, good tip! I agree, the prices are not a big deal but the selection is good. | ||
| DON5050 (207.224.147.180)
Rating: N/A |
Charles is it a 4-71 dd if so go to local dd dealer | ||
| FAST FRED (65.58.224.134) Rating: N/A |
The question of coupling the two together is the EASY part. How do you plan on keeping it on speed as it runs , and the loads vary? The HARD part. FAST FRED | ||
| Nelson Thomas (64.12.101.171)
Rating: N/A |
I am working out a similiar setup useing a Thermo King system. I believe the Thermo King units have an excellent govenor in addition to automatic shutdowns for low oil,high temp. I am planing to install the Thermo King controlls inside the coach. Ihave a 15KW onan generator head designed to run off the power take off of a tractor. the generator is rated at 1800 rpm. I would be interested in details of your set up. Thank's Nelson | ||
| Charles (24.25.14.106)
Rating: N/A |
I have a Thermo King ISUZU 4 cyl diesel. The speed can be set to run from approx. 1400 - 1950 RPM. There is a low speed solenoid and a high speed solenoid. With a tachometer the speed can be set to 1800 RPM. Is there a preference of direct drive over using pulleys? | ||
| FAST FRED (63.215.224.199) Rating: N/A |
No matter what the preset speed is set to , as he load varies , Range & 3 air cond , or just microwave , will cause an RPM , therefore Volts and Frequency will change. How does your system corect for changing loads , almost instantly as needed? What does the Thermo king controll monitor ? FAST FRED | ||
| NelsonThomas (205.188.192.188)
Rating: N/A |
Reply to Fast Fred: This is a subject I am not real familiar with. I had assumed that the governor on the Thermo King motor would automaticly compensate for loads and keep it at 1800 r.p.m... I gather from your question that this may not be so. What do know on this subject? Is there another Governor that would work better? The controll pannel has the start switch, guages, and hour meter. Nothing that actually controlls R.P.M. Any information is greatly appreciated. Thanks: Nelson Thomas | ||
| Tom Caffrey (Pvcces) (64.114.233.166)
Rating: N/A |
Nelson, aside of digital controls, there has to be a speed error to cause the governor to correct for it. With some setups, there might be 100-200 RPM change between full load and no load with everything working right. Onan has come up with a scheme in their gas generators that almost eliminates speed drop due to loading. One thing that gives them an edge is that they use a big displacement engine for the HP needed to run the generator at rated output. Our 4 KW unit uses over 50 cubic inches displacement. The Thermo King unit will run within a speed range that meets the compressor requirements and in most cases, refers don't need to be regulated that closely. To check any generator that puts out 110 AC for speed control, use an old fashioned electric clock, and check its accuracy against a digital watch. Try it light loaded, then try it heavy loaded. If you compare for one minute, the number of seconds the electric clock runs will be equal to the cycles per second. It's cheap and easy. A digital meter ought to be used to find out voltage regulation; try it light loaded and heavy loaded. Some generators have good voltage regulation with changing loads. Getting the combination right takes some work. For what it's worth. Tom Caffrey PD4106-2576 | ||
| FAST FRED (63.215.230.111) Rating: N/A |
I know of NO way to do the trick , although a buddy claims that he can find a ball weight gov that will work. But I have NEVER seen it work! Thats why my question was asked. If you ever solve the problem , short of purchasing a $$$$ electronic controll , PLEASE POST IT! FAST FRED | ||
| Richard Bowyer (Drivingmisslazy) (66.190.119.82)
Rating: N/A |
If you put full load on any genset, the frequency will droop a couple or three cycles but will typically recover to within one cycle of the pre-set frequency. The thermo king engine has a built in mechanical governor that works as well as the governors on most other gensets. Most small gensets have a mechanical governor. Electronic governors are typically only found on larger gensets as an option and this is really not needed for our applications. Frequency control within plus or minus three hertz is all that is needed. Voltage regulation on older thermo king units that I have worked on was in the plus or minus 5% which is also as good as needed. Voltage or frequency regulation is always stated as applying or removing full load. It will generally be better if only applying partial loads. About the only time you would apply full load is starting an A/C compressor and the dip of either for a couple of seconds would not do any harm. Richard | ||
| Bill Glenn (152.163.188.227)
Rating: N/A |
Food for thought. I don't know what $$$$ would amount to but I think my $ 150.00 electronic (magnetic pulse) cruise control can keep my little kubota 3 cylinder diesel @ the correct rpm to spin my $400.00 generator head (northern tool)regardless of the load on the 120v or the 12v clutched, automotive type ac compressors, so long as there is enough torque to handle the load. of course by removing the inefficiencies of the mechanical to electrical, and electrical back to mechanical compressor on the ac systems, I am hoping to reduce my fuel consumption in half. Not for the faint of heart though. I will keep you posted Bill | ||
| Richard Bowyer (Drivingmisslazy) (66.190.119.82)
Rating: N/A |
Sounds like a great plan if you can actually reduce your fuel consumption by 50%. Please keep us advised. Richard |