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Post by lesbaldry on Feb 23, 2009 14:02:05 GMT
Ok you Tech heads  ...some chassis give the option of raising or lowering the diffs to change handling also drive shaft lenghts can also change the handling...The diff hight I think I understand.... but the driveshafts???I cant get my head round this one?? Any body know or read much about the above?...another set up to worry us club racers   ;D |
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Post by yellowshark on Feb 23, 2009 14:45:06 GMT
Simple Les. Raising diffs is for carpet racing to stop fluff sticking to your balls. Increasing your shaft length is to impress the girls on the beach.  |
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Post by lesbaldry on Feb 23, 2009 15:36:42 GMT
Simple Les. Raising diffs is for carpet racing to stop fluff sticking to your balls. Increasing your shaft length is to impress the girls on the beach. Trust you!! ;D ;D ;D.....at your age too  Actually Pete its the Xray that seems to "faff" about with these sort of adjustments and perhaps the Shuey too??..I thought at least you could throw some light on my confusion. |
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Post by otr on Feb 23, 2009 15:54:08 GMT
The length of the drive shaft will directly affect the amount of grip you have and the power available at the wheels. The longer the drive shaft the more grip exponentially in relation to the wheel width at the wheel. In general terms a shorter drive shaft will give more power at the wheels that a longer one whereas a longer drive shaft will give less grip. It is part of the dynamic thrust equation. Whether anyone would actually notice the difference is debatable.
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Post by yellowshark on Feb 23, 2009 17:46:14 GMT
These adjustments were new out with the 008 Les. Lower diff position is recomemnded for asphalt and higher for carpet so I have never tried it or tried to work out what it is doing. Similalry, at odds with Ian's view, the longer shafts are recommended for asphalt and the shorter ones for carpet, so again never tried playing with it - you only need you shafts so long ;D
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Post by lesbaldry on Feb 23, 2009 19:33:18 GMT
Thanks chaps...I still cant understand the mechanics behind how a drive shaft thats shorter/ longer by 1or 2mm can make a difference..as for raising/lowering the diff by the same amount  |
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Post by otr on Feb 24, 2009 15:28:48 GMT
Ok I confess. I made all that up. Have no idea why anyone would want to make changes to either diff height or drive shaft length to be honest. It's a whole world beyond me that's for sure. I still struggle with droop (it's an age thing!) let alone all these other fancy complicated things.
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Post by gwesty on Feb 24, 2009 15:59:04 GMT
ok my understanding of diff heights is generally used for rotation speeds , hence raise for carpet = less scrub in hight grip , generally a higher diff/spool will make the car react faster and give less lateral grip ,but more mid roll ! as for drive shafts we normally use shorter shafts on fast flowing tracks like halifax as a shorter shaft will give better corner speed
its to do with pick up in relation to cg ! glenn
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Post by lesbaldry on Feb 24, 2009 16:14:26 GMT
ok my understanding of diff heights is generally used for rotation speeds , hence raise for carpet = less scrub in hight grip , generally a higher diff/spool will make the car react faster and give less lateral grip ,but more mid roll ! as for drive shafts we normally use shorter shafts on fast flowing tracks like halifax as a shorter shaft will give better corner speed its to do with pick up in relation to cg ! glenn[/quote Understood "I think "....my curiosity is satisfied...dont forget Mr W we crunch carrots ,suck on straw and drive ye olde worlde purple spud carts down er ...one of us folk still use brushed motors too ;D......Hi pete |
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Post by yellowshark on Feb 24, 2009 20:56:08 GMT
Thanks for that Glen; more money to spend before the next trip to Cotswolds then; not good with the Xray extra super front shafts costing a fortune  |
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Post by yellowshark on Feb 25, 2009 0:43:39 GMT
ok my understanding of diff heights is generally used for rotation speeds , hence raise for carpet = less scrub in hight grip , generally a higher diff/spool will make the car react faster and give less lateral grip ,but more mid roll ! as for drive shafts we normally use shorter shafts on fast flowing tracks like halifax as a shorter shaft will give better corner speed its to do with pick up in relation to cg ! glenn[/quote Understood "I think "....my curiosity is satisfied...dont forget Mr W we crunch carrots ,suck on straw and drive ye olde worlde purple spud carts down er ...one of us folk still use brushed motors too ;D......Hi pete Hi Les ; as it happens(oh gawd here he goes again) we gave our new Team 1 racing 19t a run out. No special Les special, fresh out of the box on saturday, a quick skim and brush reface Sat night. On the straight there wasn't an inch between Craig and Graham so I was well pleased with that. Of course on the infield the extra punch of the 10.5 and the extra skill of the driver made a serious difference. Alas though that trusty little 19T will be no more, consinged to the knackers yard by our new Nosram, assuming I can figure out how to set it up of course ;D |
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Post by Reuben on Feb 25, 2009 9:02:28 GMT
I hope you remember Pete that the Nosram is pretty much Plug in, geat and play! no skimming, dipping required have fun |
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Post by lesbaldry on Feb 25, 2009 12:57:18 GMT
Just "joshing" with you Pete ;D....welcome to a world with out brushes  |
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Post by yellowshark on Feb 25, 2009 13:03:59 GMT
Just "joshing" with you Pete ;D....welcome to a world with out brushes Hey Les have you got any ideas for what to do with spare lathe blades; shaving? |
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Post by lesbaldry on Feb 25, 2009 14:18:05 GMT
Just "joshing" with you Pete ;D....welcome to a world with out brushes Hey Les have you got any ideas for what to do with spare lathe blades; shaving? Museum,with your old motors,dyno etc etc ;D |
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...some chassis give the option of raising or lowering the diffs to change handling also drive shaft lenghts can also change the handling...The diff hight I think I understand.... but the driveshafts???I cant get my head round this one??
;D
