If someone with better CAD skills than I have could draw these up, I wonder what it would cost to get a batch made by one of those online machine shops? Does anyone know if they were making these in-house or using an outside supplier?
Iāve found a few bulkhead connectors that would work, and some have already been mentioned, but all the fittings I found start at 3/8" NPT for the internal threads. Thatās probably bigger than weād like for some connections, but possibly useable. Theyāre also typically expensive in the $80-90 range.
The best thing I can find that would be fairly easy to modify would be the straight through bulkhead connections like these:
Those come in smaller sizes, but might be a bit long on the outside. Spare nuts could be cut with o-ring grooves fairly easily on a lathe. Flats could be milled on part of the bulkhead thread.
I will miss those oops fitting if they donāt become available. I actually tried to get Top Rudder to use those for their tanks on the Ruckus.
Rusty
US Plastics, Nylon, with Viton or Buna-N gaskets = good. Polypropylene, EPDM gaskets = BAD.
This is, I think, the most suitable substitute for the āSNX-G01-30, 3/8 NPT Oops Fitting Qty. 1 Install in 1" Diameter Holeā fitting I have found. The price will water your eyes, but fit and function look right.
Banjo 3/8 in. 316 SS Bulkhead EPDM Fitting - John M. Ellsworth Company.
According to Karmarepair, the washer is wrong.
There are any number of substitute washers available from McMasters.
Wes
Perhaps another, less pricy, option for NPT 3/8 fitting. It would require different washers.
Bulkhead Fitting Tank Adapter 3/8" Female 1/2" Male Brass Water Tank Connector.
Wes
For those who are not part of the Sonex Builders/Pilots Facebook group, A long time supplier of machined parts to Sonex has stated that although they are not the current supplier of the oops fittings, he can ramp up easily if necessary.
5 Likes
Can someone verify the quantity and size of each oops fitting needed?
If your tank has the molded in inserts itās qty 1 of 3/8" and qty 4 of 1/8" used as follows:
Qty 1: 3/8" main tank outlet
Qty 1: 1/8" for fuel level sensor
Qty 1: 1/8" for fuel vent
Qty 2: 1/8" for tube based fuel level (one at bottom and one at top)
I know some people donāt replace all the 1/8" ones and some do. Also if you donāt have the molded inserts in the tank you wouldnāt need all of them. And if you need a fuel return for your system a 1/4" may be required.
1 Like
I put oops fittings in the sump and just plugged the top fitting, figuring it would not have much fuel pressure if any.