| Author |
Message |
    
Mark Taylor
Member
Username: dart
Post Number: 15
Registered: 02-2006
| | Posted on Tuesday, September 26, 2006 - 05:11 pm: | 
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Hi, finally got my R3M to start! However, it will only keep going for a few moments before dying again. So I checked the following - Stuart Carb level, jet clean, excellent spark, fuel appears to get through, and end of carb is screwed out about a 1/4 inch. So being almost there, what else can I check/adjust to get her going sweetly? Curiously why is there no air vent on the fuel tank - should there be one? I have always succeeded in getting seagulls going - I am determined not to be beaten by a Stuart! |
David Stott
Member
Username: david_stott
Post Number: 11
Registered: 06-2005
| | Posted on Tuesday, September 26, 2006 - 09:31 pm: |
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Mark, there will have to be a breather on the tank somewhere otherwise fuel won't flow. It will usually in the middle of the cap. Maybe you have a non standard cap. A small drill may fix your problem. |
Mark Taylor
Member
Username: dart
Post Number: 16
Registered: 02-2006
| | Posted on Wednesday, September 27, 2006 - 05:45 am: |
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Thanks David, that's what I suspected. I have the original stuart tank, which has a small brass screw in the cap - but not the sort of screw you'd expect as an air vent. It is the orginal cap for the stuart tank. So is this small screw the air vent? If so, why didn't they make it a sensible size like the seagull one?? |
Peter Ogborne
Senior Member
Username: peterogborne
Post Number: 169
Registered: 09-2002
| | Posted on Wednesday, September 27, 2006 - 06:15 am: |
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you will have to ask Mr S/T . Normaly 1/16 is a good size for the breather hole. |
David Stott
Member
Username: david_stott
Post Number: 12
Registered: 06-2005
| | Posted on Wednesday, September 27, 2006 - 07:46 pm: |
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Mark,
My Stuart Turner P55 tank simply has a very fine hole drilled in it, only the size of fuse wire, maybe a millimetre. It has no cap on it like a seagull. The hole only has to be small, because the size of your carby jet will dictate how much petrol can be drawn through at any time.
Maybe you should remove the brass screw altogether. |
Mark Taylor
Member
Username: dart
Post Number: 17
Registered: 02-2006
| | Posted on Thursday, September 28, 2006 - 04:48 am: |
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Thanks for the advice - I have removed the screw. But I think I now know the problem. I had connected up the old Stuart fuel tank, and even though I tried to clean it well, it has still taken muck through - which has been blocking the filters and jet. So dirty fuel seems to be the cause. Not sure how to clean up the old tank - perhaps it is better to use a new one? |
