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Post by Martin Young on Apr 6, 2009 7:31:52 GMT
As there were plenty of good comment on my last droop post I thought I'd ask again for some help ;D. I’m after some advice / comments on the set up of my Cyclone WCE. The car generally is very good with plenty of rear end grip while entering the corners, upon exit however the car has lots of on power over steer which make it very challenging to drive with a 10.5 in it  . I know I’m not the smoothest driver out of the corners  but any set up advice offer that could reduce this on power over steer would be appreciated. I have tried the following: - Increased front droop to try and shift the weight to the back tyres upon acceleration. - Changed various roll centres to increase rear end grip - Even tried the stiffer alloy rear brace (In desperation I must add). - Have tried adjusting the tightness of the rear diff. I feel I’m loosing loads of time exiting the corner almost waiting for the car to be perfectly straight before I can apply the power.  Any set up ideas would be greatly appreciated and any comment very welcome. With the SLCC only 2 weeks away I would like to try and sort it. Looking at how Lucas' car handles I may be borrowing his car  |
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Post by lesbaldry on Apr 6, 2009 9:52:26 GMT
The stiffer alloy rear brace will make maters worse as will a tighter diff,for our track and your car a 4/3 droop and 6/6.5 ride hight is a must,rear shocks laid in some help...try this "pro squat" 2mm shim under rear wish bone rear pivot and 1mm under rear wish bone front pivot with 1 mm shim under camber link (1nboard)..this should give you more rear end grip out of corners and balance the power on steering out of fast sweeping bends...Theoreticaly this setting should not Handel bumps well..works for Aldershot  , there the high speed banking and part of the strait has some serious bumps and ripples |
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Post by yellowshark on Apr 6, 2009 11:04:29 GMT
Martin, reducing your Ackermann (more angled steering rods) may help
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Post by yellowshark on Apr 6, 2009 11:08:57 GMT
Oh and my personal experience, on our 008 the other week, is that the Bashley setup is not good for Alderhot anyway!!! Low grip, rear end all over the place, probably need to increase ride height for high speed right turn banking. Fitting Matt's allegedly SLCC legal rear spoiler is probably the answer ;D
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Post by Martin Young on Apr 6, 2009 12:07:10 GMT
Oh and my personal experience, on our 008 the other week, is that the Bashley setup is not good for Alderhot anyway!!! Low grip, rear end all over the place, probably need to increase ride height for high speed right turn banking. Fitting Matt's allegedly SLCC legal rear spoiler is probably the answer ;D Hi I understand the same set up wont work at Aldershot but since i've raced outside with either the cyclone or my previous BD i've struggled with on power oversteer. I just wondered if i was working along the correct lines trying to transfer more weight onto the rear wheels upon acceleration? How will ackermann affect the on power steering? it one thing i've never thought of. As for Matt's rear spoiler I've heard a patents been applied for regarding boats and spinnakers ;D ;D |
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Post by issac on Apr 6, 2009 16:32:25 GMT
matts new spoiler is the new method of slowing everybody down
the faster you go the more the front of the car lifts up ie no steering
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Post by gwesty on Apr 6, 2009 18:47:15 GMT
hi , ackerman settings are used for turning in , through and exit . the further forward the inside ball joints are (towards spool) will give an aggressive feel (entry) but will then push through the corner ! the more rearward gives slower response and feel with more exit steering .
your oversteer problem . what springs are you using ?, also pistons , oil ? and what position on a arm and tower ?
glenn
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Post by Martin Young on Apr 6, 2009 20:13:17 GMT
hi , ackerman settings are used for turning in , through and exit . the further forward the inside ball joints are (towards spool) will give an aggressive feel (entry) but will then push through the corner ! the more rearward gives slower response and feel with more exit steering . your oversteer problem . what springs are you using ?, also pistons , oil ? and what position on a arm and tower ? glenn Hi Glenn, Answers to questions you asked - HPI Golds Front, HPI Silver Back - 40wt Oil Front, 35wt Oil Rear - 2 Hole Piston (STD Cyclone WCE Piston) - 1.5mm Shims under all pivot blocks - 2mm Shims under inside links - Longest camber link positions - All wheel base spacers are as the standard WCE Manual. - Shock positions on towers are 2.5 on the front and 3.0 on the rear. Does this help? Thanks Martin |
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Post by yellowshark on Apr 6, 2009 20:33:12 GMT
Hi Martin, I cannot really answer the Ackermann thing in theoretical terms. All I can say is that a few weeks back we wanted more turn in and the back was loose on power exit. I spotted in the Xray setup manual that reducing Ackerman would solve both - we made the change and it did!
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Post by lesbaldry on Apr 6, 2009 20:56:12 GMT
Hi Martin, I cannot really answer the Ackermann thing in theoretical terms. All I can say is that a few weeks back we wanted more turn in and the back was loose on power exit. I spotted in the Xray setup manual that reducing Ackerman would solve both - we made the change and it did! My gut feeling Pete is Martin may be missing somthing "we all do now and then"...some of us "mention no names ;D" even rebuild with the castor blocks wrong sided and wonder why the cars very nervous!!....Martin may have rear grip issues rather than a steering prob,the Cyclone has a reasonable steering feel in kit setting especialy with the understeering gold springs !! I have PM'ed martin with an easy to drive stable set up that does work for Aldershot!!..it quallied a 17.5 into the 13.5 A final amongst some respectable club drivers there a few weeks back ...Mr GW will vouch for that! |
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Post by TryHard on Apr 6, 2009 21:49:08 GMT
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Post by gwesty on Apr 7, 2009 16:07:26 GMT
hi , the set up looks pretty much what i ran when with hb ! although the camber link (longest)
would make the car over rotate on power exit . longest rear link will make the car roll later in the corner and almost feel as if the front has to drag it around ! as for ackerman set this to 4mm each side
hth glenn
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. I know I’m not the smoothest driver out of the corners 
but any set up advice offer that could reduce this on power over steer would be appreciated.
, there the high speed banking and part of the strait has some serious bumps and ripples 
