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Model Forum / Radio Controlled / Land Models / September 2006Problem starting RC Buggy
Hello, I am really struggling to "keep" my Tamiya started, I will try and explain step by step what I am doing.... 1: I ensure the fuel tank is filled 2: I pump the fuel button which fills what I think might be called the CARB? I give it 5 or 6 pushes... 3: I clip on the glow ignitier (with meter), and needle is in the green indicating the plug is hot. 4: I push down hard, and yank the pull start. Engine starts nicely, I let it tick over for maybe 30 seconds before having a minute or so of not so crazy driving, then I go a bit mental. 5: 75% of the time, the fuel will run out which is fine. 25% it will die if I accelerate too hard from a standstill, or I have the engine idle but with the knob on the control (not the main knob, the little one on the left- work like cruise control), if it is set to its lowest point. 6: I ALWAYS struggle to get it going again after it's first run.... I have experimented and I can definately say it's something to do with the Glow plug. For example, I have tried for 10 minutes to start it with no joy. As soon as I removed the glow plug, inspected it, and put it back in tightly, it startyed. Yesterday, the same situation - got a good run, then it failed to start again. I swapped the glow plug after 10 minutes of trying to get it started, and again it worked staright away. Trouble is, changing the glow plug doesnt always help - but nothing else ever works. And, I have changed back to glow plugs which previously didnt work, which now start the car....it feels like there us a nice position for the glow plug in the car, and if I can't find that position, it won't start. I have it fairly tight..... Any tips? :) Gary/ PS - its the Tamiya 43514 1/10 XBG Nitro Thunder > Hello, > [quoted text clipped - 33 lines] > > Gary/ > Hello, > [quoted text clipped - 33 lines] > > Gary/ It sounds to me like the engine is perhaps slightly lean. You still got the manual? Try turning the high end fuel needle out about 1/8th of a turn :) What glow plugs are you using? I recommend OS A3 's  SignatureDan - on his PC >> Hello, >> [quoted text clipped - 39 lines] > > What glow plugs are you using? I recommend OS A3 's Agreed, engine dying at WOT and hard hot restarts indicate a lean running problem. To the OP, this is not related in any way, shape or form to your glow plug! Doc > >> Hello, > >> [quoted text clipped - 48 lines] > > Doc The other thing is that its never good a thing is to run your nitro vehicles completely out of fuel every time you run it, specially at WOT. Try to figure out how much approx. run time your getting and then make sure you refill it before that time is up, you should be able to keep it running between fuel stops. The only time our trucks get turned off is when we break something or we get bored or the main fuel supply runs dry or someone is on the same frequency. Cheers > It sounds to me like the engine is perhaps slightly lean. You still got > the manual? Try turning the high end fuel needle out about 1/8th of a > turn :) Which direction? G. > Which direction? > > G. Clockwise should be lean and anticlockwise should be rich. Either way you should be able to tell because if its richer then it should have more smoke coming out the exhaust as you accelerate and if its leaner less smoke. Cheers too rich > Hello, > [quoted text clipped - 33 lines] > > Gary/ > too rich I disagree. Too lean. SignatureDan - on his PC > I disagree. Too lean. Doesnt matter I broke the pullstart on this today too :) f.ck, this is pissing me off! Gary. >> I disagree. Too lean. > > Doesnt matter I broke the pullstart on this today too :) f.ck, this is > pissing me off! > > Gary. Pff, just play with the MTA then ;) Just use the drill start - ignore the puller, it would have gummed up after a few tanks anyway. Raced my Sav against a MTA .21 today. That was quite funny... SignatureDan - on his PC > Pff, just play with the MTA then ;) Just use the drill start - ignore the > puller, it would have gummed up after a few tanks anyway. Think I have flooded the engine, which is turning the drill handle instead of the motor :) How do you UNFLOOD without the pullstart? Both being taken to LHS for repair in the morning, will collect on Monday - have wedding and i'm the best man, so no time to deal with the toys....DAMN. G. >> Pff, just play with the MTA then ;) Just use the drill start - ignore >> the puller, it would have gummed up after a few tanks anyway. [quoted text clipped - 7 lines] > > G. Remove the glowplug, flip the car upside down, and rotate it via the drill. It will puke all the extra fuel out of the glow plug hole. Doc > Remove the glowplug, flip the car upside down, and rotate it via the > drill. It will puke all the extra fuel out of the glow plug hole. > > Doc Thanks dude, Man this is such cool fun when the thing's just start and drive :) Oherwise, it is bugging me big time :) ! Patience Daniel Son.... G. >> Remove the glowplug, flip the car upside down, and rotate it via the >> drill. It will puke all the extra fuel out of the glow plug hole. [quoted text clipped - 9 lines] > > G. Patience and experience are key. Starting and tuning these things is the hardest part of the nitro hobby. Once you get good at it, it won't be such a big hassle. While some prefer pullstarts, I find them to be a menance and everything I own is either roto or drill start. Like Richard suggested, refuel your car before it runs out of gas. You can accomplish this by cutting a hole in the body above or adjacent to the fuel tank and affixing a zip tie to the fuel tank to pull the lid open while the body is on. When you pull in for a pit stop, crack your throttle open a bit via the throttle trim adjustment on your radio to prevent it from loading up and stalling. When me and my buds get really into a good bash session, we'll have them running for 2-3 hours at times. Even when WE need to refuel (read: more beer) we just leave it running, go inside to fetch a sixer, come back out, drink a beer, have a smoke, and then take off driving again. If you look at the pics of my stuff via the link I posted a few days ago you'll see examples of this. Doc > > How do you UNFLOOD without the pullstart? Both being taken to LHS for > > repair in the morning, will collect on Monday - have wedding and i'm the [quoted text clipped - 4 lines] > Remove the glowplug, flip the car upside down, and rotate it via the drill. > It will puke all the extra fuel out of the glow plug hole. What has worked for me is to just loosen the glow plug a turn and use the pullstart to turn it over a few times by hand. The fuel will ooze out past the threads around the glow plug. Its less work than removing the glowplug and making sure something doesn't get down into the combustion chamber. Chris |
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