Originally Posted by
kochj
I am thinking about the OS 7 cyl. and when OS will come out with some Gasoline radials or MULTI cyl gasoline 4 strokes......
They will do a good job when they do...
My saito 325 will be up in a plane soon..... from my understanding, this has a fan that distributes the fuel evenly
I ran it shortly on a test stand, rich, and cyls were un even temps....
Which makes sence, as rich setting will cause this....
There isn't a PERFECT scenario..... with radials...... I wouldn't get all caught up in it too much....just go and run it rich for break in but make sure it gets hot enough to actually BREAK IN the engine.
I see it with the nitro car guys..... they don't heat up the engine enough to get the cyl to expand..... then the cyl/piston wares out prematurely or the conrod breaks from stress.... then the engine manf. gets the blame...
when it should have not...
I honestly hope OS doesn't convert it all to gas. They are doing the right thing keeping some methanol options. IMO, I think this engine is cool but there are drawbacks to gas in modelling. The benefit to running pump gas is the ease of availability, cost, and ease of mixing your on fuel ratios. It's all in the cost of running the fuel... but while the cost of gas saves you at the pump, In these size engines gas causes more problems than it fixes IMO - at least in terms of these Saito 4 strokes and radials. They seem to wear out rather quickly, and have added heat etc. plus, who wants to bring gasoline inside your house to work on your equipment? I tried running one of these Saito gassers, and wasn't impressed in a few aspects - the smell inside the house was the final deterrent. Love the methanol radials... too bad they are slowly killing them.