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Post by Deleted on Apr 1, 2008 10:22:11 GMT -7
Cuts - to remove, drill , lighten or clearance. Sometimes just for amusement, I perform this body lightening task over a sheet of 8.5" X 11" typing paper and then funnel the particulates and dust onto my Ohaus gram scale to check out the weight savings. A few tenths of a gram can be saved and its a cool way to measure what you have removed from the body (and /or chassis if permitted)
newbombturk
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Post by allstarhr on Apr 1, 2008 10:45:59 GMT -7
Ok...Gotta try to keep up here.
Anybody know where I can get a Studebaker HO screw-on body made from carbon fiber?
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Post by johnbalich on Apr 6, 2008 17:02:36 GMT -7
This tip is VERY viable!! Think about it; what amount of horsepower does a T jet produce??? Actually, quite a bit in theory! Assume 24 volts at 2.0 amps (more than enough for a Mild t jet.) 24 times 2 equals 48 watts. 48 divided by 740 (the number of watts in one horsepower) and you get 6/10 of a horsepower! (power to weight ratio is awesome) But in real world terms, its only the energy produced by a 50 watt light bulb!! Ok where was I?
The small power means: WEIGHT and FRICTION are HUGE factors- you have NO power to waste. As racing tightens up at an NTRA event, these factors will come to the fore more and more. Every gram-fraction removed is the same as power gained. Less weight and painstaking trial-and-error adjustment of downforce (traction mags) will yield big gains. Downforce trades resistance (perceived weight) for traction. Traction is critical at 24 volts.
Use your EYES, EARS and feeling. Anything that feels "friction-y" (what can I say, I make up words as I need them) needs investigation. Anything that wobbles, is out of round, binds, feels sloppy needs to be tracked down. A NOISY mesh is a poor mesh. Gear trains should spin freely when magnets and brushes are removed. Increased brush tension normally yields power gains but causes some parasitic drag. Magnets add drag as well, but are a necessary part of the equation. MAGNETS CAN BE TOO STRONG FOR A SPECIFIC armature. IT's like havinbg an engine with a compression ratio so high, the starter can't kick it over. A stock arm and Poly magnets would be a poor match. (arent you glad? POLY mags ain't cheap, Louie.
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