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Post by adibrook on Apr 26, 2006 19:16:07 GMT -5
Hey peopel
I'v joined...as asked by someone from here.
I'm adi and i'm generally crazy. Experieces include pirate radio analogue electronics engines and general mechanical stuff. I'v been fixing engines and screwing around with electronics sicne the age of about 7.
I'm more into ''unofficial'' electronics, and regulary laugh at commercially made r/c gear.
I'v built lots of prototypes of wierd r/c stuff, from planes to nitro powered generators (who says somethign cant be electric AND nitro?)
so...umm...anywa...hello.
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Post by Airpressure on Apr 26, 2006 19:20:48 GMT -5
Hello Adibrook, I'm charles (air6pressure1) and your knowledge is just what we need on this board. Some people may think making a nitro and electric RC is weird but here we don't. We think outside the box here, and dont jump on people for a new idea. Its new inavative ways that keep this hobby running.
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Kouki_Trueno
RC racer
aka: r34gtr1999
--Drifter Inside--
Posts: 30
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Post by Kouki_Trueno on Apr 26, 2006 19:40:14 GMT -5
Hey dude. That generator sounds like it might be a pretty cool idea. Whenever I get around to it, I'm going to put either a weed wacker motor or a 5 hp push mower motor into the power wheels. It should be rather interesting....but yeah....according to other my friends I'm sorta crazy too ;D
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Post by adibrook on Apr 26, 2006 20:03:14 GMT -5
Oh man... Me and my friends have tried so many time to build a radio control lwanmower engine powered device. I have a big pile of old engines between 50 and 360cc anyway. We found a nice engine at the dump too, which had a automatic clutch (just liek RC trucks!) and was a 4 stroke 4.5hp Qualcast engine. Theyre old british engines used in lawnmowers generators garden tractors etc. They are very good. Extreamly stabe and have a built in regulator, so within limits it would control it's throttle to keep at thesame speed independent of the load. You set the speed with the throttle lever. However we ran into problems with the gear change. Because nitro engines have such a high stable rpm range, most nitro trucks work allright with 1 or 2 or 3 gears. But lawnmower enigines are only stable between about 500 and 2500 rpm, so you need gears. We tried to use a ger change system from a mountain bike, but the clutch responce was too abrupt. It ended up chewing the chain or skipping. Eventually it broke several teeth and killed the chain and the project just slowly got abandonned. However, now i have somethign interasting. A VESPA motorbike engine compelte with clutch and gearbox. Now i just need servos powerfull enough to pull the clutch, change gear and steer. You might as well sit on the **** thign and do it yourself  A weedwacker shoudl work, but youre better of with a chainsaw engine, since they have auto clutches. I do lots of crazy stuff like this. I have MIG arc and gas welding stuff and me and my freind are workign on a gas turbine at the moment. that shoudl be cool. I think the nitro generator would be usefull for rock crawlers, because you get the really tight control of electric, but it can produce more current than a battery, and for longer. |
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Post by offroadin101 on Apr 26, 2006 20:43:24 GMT -5
I think that the generator idea is innovative and everything but with all the new battery types coming out, I don't see a need, such as Lithium Manganese, and LiPo of course.
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Post by Airpressure on Apr 26, 2006 20:46:22 GMT -5
I think that the generator idea is innovative and everything but with all the new battery types coming out, I don't see a need, such as Lithium Manganese, and LiPo of course. Hello there off roadin nice to see you joined, your account name goes with the title of our web board! LOL Have a fun time. |
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Post by adibrook on Apr 26, 2006 21:21:00 GMT -5
I thought that myself.
Gensets can be usefull for two reasons.
1) their current output is superior to batteries. A standard rc truck motor being spun by an 1.5cc marine diesel (what i used for the 1st prototype) can produce current thats higher than a battery can do without self destructing. I like marine diesels for this because they have a water cooling head, and they have more torq and less revs than a nitro engine. Starting them is a bit of a pain in the *** tho. But then i'm used to diesels.
2) the oldest probelm of all. You cant put a battery in a bottle and pour it out. Batteries can only be transferred as a whole battery. You cant refuell one. Thats ok if youre a nice civillised on-road racing dude, with peopel in the pits to change batteries for you, but if youre into bashing off-roads where everythgin is dusty muddy and disorganised (heheh...how hardcore offroad should be) than pumping up a fuel tank (through a filter if possibel) is easier than trying to change batteries.
I'm still developign it. My last prototype had a shaft couplign that wasnt balanced and it shook itself to pieces. But weight and power was impressive.
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Post by Airpressure on Apr 28, 2006 7:03:36 GMT -5
I would enjoy to see that project to progress and see what it ends up like!
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Post by offroadin101 on Apr 28, 2006 8:52:49 GMT -5
It sounds pretty interesting. But my question is, Why not just run nitro if your going to do all this? Most people I know who run electric say it's just more convenient and isn't as noisy. One big thing for me is the noise. In my neighborhood, having a loud nitro engine running up and down the street wouldn't be a good idea. I guess it would make sense to have constant power but even if it did work well and everything, it would be too expensive to sell!
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