This is going to be a little long but I hope some of you will still read this and can help me out. I recently bought a new Savage 2.5 RTR which is my first nitro r/c. My brother also got his first nitro car, an HPI RS4 3 18SS which we have virtually no problems with at all.
I started the break-in on the Savage and it started no problem. A little stalling here and there but it stated that could happen in the instructions so no big deal, I’d just restart it and let it run rich and so forth. When I went to do the slow to mid speed driving part it just stalls the minute you breath on the throttle, even if I tried to slightly adjust the HSN. I found that if I started driving it with the glow stick still attached and then pulled it off after it started moving I could keep driving it so that’s what I did to continue with the break-in. The other day I tried to drive it and planned on starting to get it up to speed but still cautiously. I can start it every time no problem but if you so much as breath on the throttle it shuts off. I tired leaning it out but same thing happens. The factory settings of keeping the screws flush and level with their barrel body and then slightly turning the HSN just don’t work for anything other then starting it seems.
A friend of mine tried to lean out the HSN a lot, much more then 1/8” down it says is max in the manual and then it actually ran and ran fairly well. Good smoke when jumping on it and smooth fast acceleration. The problem now is when you’re full on it and it gets to the top of the rpm it practically shuts off, like sputters or cuts out and as soon as you let off the revs blip up and it keeps running and you can accelerate again, back up to wot. It never shifts to second but I don’t care about that, I’ll deal with that later as it’s just a simple adjustment if needed. The engine should not be quitting at wot regardless of which gear it’s in, and that’s the real problem. If I slowly keep richening the HSN little by little eventually it just won’t run, it will die again when you give it throttle. I’m scared with the needle in so far that it’s too lean but it won’t run any other way. Once in a while I could stay at wot without it cutting out but not enough to say it was working correctly. Is what’s happening a “flame out”? How could the settings in the engine manual be so far off? Turning the HSN in no more then an 1/8” wasn’t near enough. I’m thinking maybe I need to adjust the LSN but how can I do so if I can’t get the HSN anywhere near what the directions say is correct? Any ideas as to why it’s sputtering out at wot and what I can try to determine and correct the real problem?
I started the break-in on the Savage and it started no problem. A little stalling here and there but it stated that could happen in the instructions so no big deal, I’d just restart it and let it run rich and so forth. When I went to do the slow to mid speed driving part it just stalls the minute you breath on the throttle, even if I tried to slightly adjust the HSN. I found that if I started driving it with the glow stick still attached and then pulled it off after it started moving I could keep driving it so that’s what I did to continue with the break-in. The other day I tried to drive it and planned on starting to get it up to speed but still cautiously. I can start it every time no problem but if you so much as breath on the throttle it shuts off. I tired leaning it out but same thing happens. The factory settings of keeping the screws flush and level with their barrel body and then slightly turning the HSN just don’t work for anything other then starting it seems.
A friend of mine tried to lean out the HSN a lot, much more then 1/8” down it says is max in the manual and then it actually ran and ran fairly well. Good smoke when jumping on it and smooth fast acceleration. The problem now is when you’re full on it and it gets to the top of the rpm it practically shuts off, like sputters or cuts out and as soon as you let off the revs blip up and it keeps running and you can accelerate again, back up to wot. It never shifts to second but I don’t care about that, I’ll deal with that later as it’s just a simple adjustment if needed. The engine should not be quitting at wot regardless of which gear it’s in, and that’s the real problem. If I slowly keep richening the HSN little by little eventually it just won’t run, it will die again when you give it throttle. I’m scared with the needle in so far that it’s too lean but it won’t run any other way. Once in a while I could stay at wot without it cutting out but not enough to say it was working correctly. Is what’s happening a “flame out”? How could the settings in the engine manual be so far off? Turning the HSN in no more then an 1/8” wasn’t near enough. I’m thinking maybe I need to adjust the LSN but how can I do so if I can’t get the HSN anywhere near what the directions say is correct? Any ideas as to why it’s sputtering out at wot and what I can try to determine and correct the real problem?
