| Author | Message | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 551 Registered: 8-2004 Posted From: 70.61.105.213  Rating: N/A |
I'd appreciate some advice. I bought an air throttle set from Nick at NimCo. It came with threaded adapters (with compression fittings) for 1/4" OD plastic tube. I had been thinking that this means that 1/4" tube is the right thing to use, but is it? (I have a run of about 35 feet from the accelerator pedal to the fuel injector pump, if it makes any difference.) I have a 3/8" tube for the air supply to the pedal. Thanks, BH NC USA | ||
| Bill Gerrie (Bill_gerrie)
Registered Member Username: Bill_gerrie Post Number: 363 Registered: 3-2006 Posted From: 216.198.139.38  Rating: N/A |
Bruce I have installed a few air throttles and always used 3/8" line from the pedal to the engine. Never had a problem. If you have an air modulated valve on the tranny you need to put a "T" in the line in the engine compartment. The distance from the "T" to both the slave cylinder on the engine and the tranny valve must be of equal length. Bill | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 553 Registered: 8-2004 Posted From: 70.61.105.213 Rating: N/A |
Thanks, Bill, no modulated valve on the tranny. It's a very simple setup. The threads are sized for 1/4" OK tube - will the 3/8" tube be of benefit even with the small fittings? Many thanks for the input. | ||
| Bill Gerrie (Bill_gerrie)
Registered Member Username: Bill_gerrie Post Number: 364 Registered: 3-2006 Posted From: 216.198.139.38 Rating: N/A |
Bruce You meen the threads are 1/4 NPT in all the ports? That is the way all I have seen are. You can get a 1/4 NPT to a 3/8" compression fittings for all ports. Make sure you run the exhaust port from the pedal assembly to a place under the bus as it can get a little oily over time. You will love the air throttle after it is in. So little foot pressure. A slight lag but nothing to worry about. Bill | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 556 Registered: 8-2004 Posted From: 70.61.105.213 Rating: N/A |
Thanks, Bill. That's the perfect info that I need to know! I had planned to run a tube from the exhaust port to under my bus and put a screen over it (keep dust, insects, etc. out of it). Good idea? I've downloaded the Williams data sheet off the website. Just typed in the number on the foot pedal and also the injection pump cylinder and the info comes right up; mounting hole dimensions, port ID and dimensions, operating data (stroke length, etc.). Very useful. Just no info on best hose diameter. | ||
| Bill Gerrie (Bill_gerrie)
Registered Member Username: Bill_gerrie Post Number: 365 Registered: 3-2006 Posted From: 216.198.139.38 Rating: N/A |
Bruce No need to cover the exhaust tube. It blows out each time you let up from the pedal so nothing will go into it. Bill | ||
| Jim Wilke (Jim Bob) (Pd41044039)
Registered Member Username: Pd41044039 Post Number: 506 Registered: 2-2001 Posted From: 184.0.3.170 Rating: N/A |
Bruce, I would cover it with a bag of window screen. If you ran the bus all the time nothing would bother it but when vehicles sit for weeks and months, mud dauber wasps find & clog every hole they can find. I have also had hornets make nests in air horns both on top and under the coach. Yellow jackets love to nest in the bay door hand holes. So now everything possible gets screened. | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 558 Registered: 8-2004 Posted From: 12.52.187.202 Rating: N/A |
Yeah, Jim, you live in NC, too! :^) Do you put a screen over the "bell" of your air horn, too? (Message edited by oonrahnjay on June 18, 2010) | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1043 Registered: 8-2006 Posted From: 99.184.9.29 Rating: N/A |
Same thing happens in California! The railroads equip the air brake valves on all the freight and passenger cars with "wasp excluders," which are about an inch and a half rubber diaphragm over an inch and a quarter hole. The rubber stays tight against the metal, unless air is exhausting. G | ||
| Jim Wilke (Jim Bob) (Pd41044039)
Registered Member Username: Pd41044039 Post Number: 509 Registered: 2-2001 Posted From: 184.0.3.170 Rating: N/A |
Bruce, I have screen over the horns on the bottom ("city horns") but not the ones on the roof. This spring one was fully closed with a nest. Hey, do you think if we had big excluders on the horns, it might quack like a giant whoopee cushion when we honk the horn????? George, I am NOT making fun of the excluders. I'd like to exclude wasps from the planet! |