LocostUSA.com

No, the two are unrelated. If I have 100 lb/in springs or 1000 lb/in springs, I can still have the suspension designed for the above travel. One doesn't have anything to do with the other.

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Midlana book: Build this mid-engine Locost!, http://midlana.com/stuff/book/
Kimini book: Designing mid-engine cars using FWD drivetrains
Both available from https://www.lulu.com/

what I mean is that if it is a linear spring with 1 in droop, that is 1 g of force from the car sitting staticly, then wouldn't 4 in of total travel imply 4 g for a max load that will be exserted at the wheel?

also I changed the spring rate to 500 lb/in and it reduced the total wheel travel by .9 in

for the race setup the spring travels 1.61 in with the k=300lb/in

with the k=500 lb/in the spring travels .812 in. as you see above. the cam is slightly nonlinear which accounts for this data in my mind atleast.

thoughts?

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build log
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3507

Other toys:
2001 Z06 (supercharged )
2003 CBR600RR

this is without changing the motion ratio

_________________
build log
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3507

Other toys:
2001 Z06 (supercharged )
2003 CBR600RR

this was passed on to me from a knowledgable feller on suzuki sv forum and he got it from a gsxr forum. its not 100% accurate but its a good start i think.

Stock Shock Length Chart

Make Model Year Shock Length(mm) Shock Stroke(mm)

Suzuki Bandit 600 2000-2004 319 55
Suzuki Bandit 650 2005 319.5 65.5
Suzuki Bandit 1200 1996-2000 306 64
Suzuki Bandit 1200 2001-2005 320 (+6/-0) 61
Suzuki GSXR 600 1992-1993 312 (+12/-0) 67
Suzuki GSXR 600 2001-2003 325.5 (+6/-0) 74
Suzuki GSXR 600 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 750 1985-1987 290.5 61
Suzuki GSXR 750 1988-1991 312 (+12/-0) 67
Suzuki GSXR 750 1992-1995 312 (+12/-0) 67
Suzuki GSXR 750 1996-1999 356 (+6/-6) 79
Suzuki GSXR 750 2000-2003 325 (+6/-0) 74
Suzuki GSXR 750 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 1000 2001-2002 329.5 (+5.5/-0.5) 74
Suzuki GSXR 1000 2003-2004 332.5 (+6/-0) 74
Suzuki GSXR 1000 2005 319 70
Suzuki GSXR 1100 1986-1988 315 69
Suzuki GSXR 1100 1989-1992 312 70
Suzuki GSXR 1100 1993-1998 312 70
Suzuki Hayabusa 1999-2006 330 72
Suzuki SV1000/SV1000S 2003-2007 3325
Kawasaki ZX6R 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6RR 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6R 2005 335.5 (+12/-0) 64.5
Kawasaki ZX6RR 2005-2006 330 (+12/=0) 63.5
Kawasaki ZX7R 1996-2001 350 (+12/-0) 75
Kawasaki ZX9R 1994-1997 348 79
Kawasaki ZX9R 1998-1999 330 (+12/-0) 69
Kawasaki ZX9R 2000-2001 338 67
Kawasaki ZX9R 2002-2003 338.5 67.5
Kawasaki ZX10 1988-1989 314.5 67
Kawasaki ZX10R 2004-2005 338 (+7/-5) 69
Kawasaki ZX12R 2000-2005 338 (+7/-5) 67
Honda CBR 600 F 1987-1990 292 50
Honda CBR 600 RR 2003-2006 313 (+0/-6) 59.5
Honda VFR 800 FI 1998-2001 325 58
Honda VFR 800 FI 2002-2005 317.5 53.5
Honda CBR 900 RR 1992-1995 319 (+12/-0) 54
Honda CBR 900 RR 1996-1997 305 (+12/-0) 60
Honda CBR 900 RR 1998-1999 303 (+12/-0) 57
Honda CBR 900 RR 2000-2001 286 (+4/-2) 57
Honda CBR 900 RR 2002-2003 288 (+2/-4) 57
Honda CBR 929 2000-2001 286 (+4/-2) 57
Honda CBR 954 2002-2003 288 (+2/-4) 57
Honda RC51 2000-2005 326 (+10/-2) 63
Honda CBR 1000 RR 2004-2006 314 (+6/-0) 58
Honda VTR 1000 F 1997-2005 346 60
Honda VTR 1000 SP1 2000-2001 326 (+10/-2) 63
Honda VTR 1000 SP2 2002-2005 326 (+10/-2) 63
Honda CBR 1100 XX 1997-2005 319 52
Yamaha YZF 600 1994-1999 360 (+12/-0) 70
Yamaha YZF R6 1999-2002 305 (+4/-2) 62
Yamaha YZF R6 2003-2004 295 (+5.5/-0.5) 62.5
Yamaha YZF R6 2005 300 (+0/-6) 62.5

_________________
90 talon as old dd turned into donor for the locost
06 suzuki sv1ks for the kneedragging fix

mitsu 4g63 powered 442e - viewtopic.php?f=35&t=7317&start=0

thx

_________________
build log
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3507

Other toys:
2001 Z06 (supercharged )
2003 CBR600RR

no prob. i found it useful, hope somebody else does too. even if every shock has a +/-10% error the listing is a good starting point.

i've figured out which shocks in theory to use but where do i find more info on the specifics of inboard suspension? this thread is more general stuff. i'm looking for the finer points like angle of pushrod compared to shock, differences and effects of different bellcrank designs, formulas to figure wheel rate vs. spring rate vs. whatever else needs figured? i know there is a lot of stuff scattered about the forum but should we try to start a thread to specific technical details.
or what books? i know of the tune to win/drive to win/i want to win(ok i'm paraphrasing) series but they are all kind 20-30 years old. are they up to date with inboard design info and multi link IRS and such things? or is there maybe a definitive newer release that covers everything? like the suspension equivalent of the turbo bible, Corky Bell "Maximum Boost"?

ok now that i'm done sounding like a noob thats too lazy to use search i'll shut up and disapper back into 'chronic lurker' mode

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90 talon as old dd turned into donor for the locost
06 suzuki sv1ks for the kneedragging fix

mitsu 4g63 powered 442e - viewtopic.php?f=35&t=7317&start=0

But physics and geometry rules haven't changed, and since we aren't building F1 cars, all the old books work just fine. I recommend Staniforth's books starting Race and Rally Car Source Book, and it's sucessors. Smith's books are excellent but don't cover push-rod suspension in any detail. Get the Stainforth book(s).

_________________
Midlana book: Build this mid-engine Locost!, http://midlana.com/stuff/book/
Kimini book: Designing mid-engine cars using FWD drivetrains
Both available from https://www.lulu.com/

i realize the really basics of it all are the same. i've read reviews that usually love the smith's books or say they're ok but dont cover some newer ideas like pushrod or IRS(not sure exactly what kinds IRS, i havent read them). i dont want to start burning my budget into a library when i have plenty left of things the car still needs. so i figured i's see what maybe more contemporary titles are suggested. i'll go see if i can find a copy of R + R source book right now.

thanks for the help

_________________
90 talon as old dd turned into donor for the locost
06 suzuki sv1ks for the kneedragging fix

mitsu 4g63 powered 442e - viewtopic.php?f=35&t=7317&start=0

I have Road & Rally Source Book, and though it has some outstanding sections, much of the book is filler. Competition Car Suspension is the one to buy, I think.

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Dreaming the dream since 2003. Haynes chassis, Miata uprights, everything else from 1987 NA RX7 donor.

thats really good to hear since thats i ordered CC Suspension instead of R&R Source Book. i read the reviews and amazon description and it seemed like CCS was a better option. it seemeed to cover a broader range of ideas/disiplines and listed a newish and updated 4th edition. RRSB seems like it was to be more specific to certain race type and no recent updated edtion. although when i start a library i'd be more than happy to read RRSB but not in the postion to do so quite yet.

_________________
90 talon as old dd turned into donor for the locost
06 suzuki sv1ks for the kneedragging fix

mitsu 4g63 powered 442e - viewtopic.php?f=35&t=7317&start=0

Take a jog over to the FSAE sites for different ideas on inboard suspension. Its a bank of innovative ideas that you can encorperate into your own build.

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2007 R1 Powered Mid Engine Street & Track Car
Build Log: viewtopic.php?t=4970

There were a few of the last line items missing from the "Shock Length Chart" posted above, compared to the otherwise identical list I came across...

Yamaha FZR 750 1987-1988 300.5 54
Yamaha FZR 750R 0W01 1989-1991 360 76
Yamaha FZR 1000 1987-1988 300.5 54
Yamaha FZR 1000 1989-1995 340 70
Yamaha YZF 1000 1996-2000 340 (+12/-0) 69
Yamaha YZF R1 1998-2001 300 (+11/-1) 65
Yamaha YZF R1 2002-2006 300 (+5.5/-0.5) 64.5

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-Justin

"Orville Wright did not have a pilots license." - Gordon MacKenzie

can the springs of the HONDA CBR600 be changed?

just thought id add this
(ive leeched enough enough from here, thought id give some humble bit of fruit back!)

k9/k10 GSXR 1000
315mm ETE
67mm stroke
oem spring 11.6 (kg / mm) = 649.570009 pounds / in

its a twin eyelet shock
gas chage, w remote res
3way adjustable

cheap

Thankyou for the added info

_________________
90 talon as old dd turned into donor for the locost
06 suzuki sv1ks for the kneedragging fix

mitsu 4g63 powered 442e - viewtopic.php?f=35&t=7317&start=0