wonwinglo
SMF Supporter
- Joined
- Apr 18, 2004
- Messages
- 6,754
- Points
- 113
- First Name
- Barry
One of the biggest sources of problems with engine reliability lies in the fuel tank,clunk tanks whilst a great idea are also prone to mis-use,in particular the tanks used in ARTF models have been personally found to be troublesome,however all is not lost as with a few mods they can be made into reliable items with a little care,let us start with the bung that goes into the fuel tank,this must be airtight,if there is any signs of a leak then you will get problems so make sure that the bung is sealed,with the type that rely on a bolt that goes through the end that spreads the bung,do not be tempted to over-tighten the bolt otherwise its job will be counter productive.
The use of silicone sealers with glo-fuel is not advised,the smallest amount could get into the fuel and cause a serious obstruction,best not to use it.
Next we have the fuel feed called the clunk,onto the end you have a weighted feed,the best types are scintered brass which stop any of the tiny strands of castor pressing getting into the carb of your engine,these strands are like tiny hairs and depending on the quality of the pressing of the castor bean vary in size,but rest assured they are there ! and will sooner or later rar their ugly heads in the form of blockages.
Where the pipe goes onto the brass feed make sure there are no sharp edges which will damage the silicone pipe,over the outside near this joint place another piece of silicone to support the weighted clunk.
With regards the silicone pipe sold in model shops this is not the best quality,better go for proper surgical quality pipe that is expensive but lasts ages without degrading,search the web for suppliers in your area,buy a roll with a buddy and cut the cost.
The same goes for the filler pipes and main feed to the carb on your engine,the rule is no sharp edges and to support the joint,place a small piece of pipe onto the end of a pair of pointed pliers stretch it outwards and push it onto the pipe with your fingers,next replacve the pipe and push it over the joint,good tip eh ! once you use this idea you will have little bother.
Most people place a fuel filter into the main feed,make sure it has a good seal to avoid any leaks,also do not neglect the pressure feed pipe that should also have a filter in the line,have you ever seen the crudge that comes back into the engine from that silencer ? dont take it to chance complete the system.
Spend a lot of time over your fuel tank installations as it will pay dividends in reliability again and again.
The use of silicone sealers with glo-fuel is not advised,the smallest amount could get into the fuel and cause a serious obstruction,best not to use it.
Next we have the fuel feed called the clunk,onto the end you have a weighted feed,the best types are scintered brass which stop any of the tiny strands of castor pressing getting into the carb of your engine,these strands are like tiny hairs and depending on the quality of the pressing of the castor bean vary in size,but rest assured they are there ! and will sooner or later rar their ugly heads in the form of blockages.
Where the pipe goes onto the brass feed make sure there are no sharp edges which will damage the silicone pipe,over the outside near this joint place another piece of silicone to support the weighted clunk.
With regards the silicone pipe sold in model shops this is not the best quality,better go for proper surgical quality pipe that is expensive but lasts ages without degrading,search the web for suppliers in your area,buy a roll with a buddy and cut the cost.
The same goes for the filler pipes and main feed to the carb on your engine,the rule is no sharp edges and to support the joint,place a small piece of pipe onto the end of a pair of pointed pliers stretch it outwards and push it onto the pipe with your fingers,next replacve the pipe and push it over the joint,good tip eh ! once you use this idea you will have little bother.
Most people place a fuel filter into the main feed,make sure it has a good seal to avoid any leaks,also do not neglect the pressure feed pipe that should also have a filter in the line,have you ever seen the crudge that comes back into the engine from that silencer ? dont take it to chance complete the system.
Spend a lot of time over your fuel tank installations as it will pay dividends in reliability again and again.