Subject:
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Re: Silver Champion design comments
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Newsgroups:
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lugnet.technic, lugnet.loc.it
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Date:
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Fri, 13 Oct 2000 17:00:04 GMT
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Viewed:
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19 times
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In lugnet.technic, John Guerquin writes:
> Hi everyone
>
> To all other Silver Champion owners..... I've just finished my
> McLaren... ...oops... Silver Champion, and have a few small complaints
> about the original design.
>
> 1st, why are there so many 3-long friction connectors used at the outboard end
> of the front suspension? This creates a tremendous amount of friction in the
> suspension's movement. The result is that once you compress the front, and
> then release it, the car returns only to about 1/2 the original ride height.
> This phenomenon is not present in the rear suspension design (probably also
> due to the 4-stud long yellow bellcrank, as opposed to the 3-stud one in the
> front, which results in a stiffer rear suspension). I've adressed this by
> swapping out the 3-long black friction connectors in the front with 4-long
> axles, with 1/2 wide gray technic bushings at the ends. This almost
> eliminates the friction in the front suspension, but does introduce
> additionnal freeplay in the steering and suspension geometry.
>
> 2nd, the kingpin offset of the front suspension (distance on the ground
> between the vertical steering axis and the center of the tire) is so large,
> that steering the car on a high friction surface is incredibly difficult. It
> puts the steering column and all steering components under a lot of stress.
> This large kingpin offset is due to the large, and IMHO cumbersome, front
> uprights. For comparison, the 8448 supercar has the front uprights almost
> dead in the middle of the front tires (inside the wheel, unlike the 8458),
> resulting in a very light steering effort. Anybody else found this a problem,
> and perhaps have come up with a better front upright design for the Silver
> Champion?
>
> 3rd, and last, the 6 dark gray 1 and 1/2 long connectors that are used to
> connect the steering rack to the L-shaped liftarms also introduce a lot of
> freeplay into the steering geometry. I swapped them out for 4 black 2-long
> friction connectors, which significantly reduced the freeplay. They stick out
> of the bottom of the rack, but that doesn't seem to be limiting the steering
> angle.
>
> Also, why no transmission?!?!?!?!?! There appears to be plenty of 4-stud wide
> space underneath the engine and 'exhaust'. Anybody tried it yet? Have
> anybody's yellow suspension bellcranks (the small ones used front and rear)
> broken because of the stress? Mine haven't, but I'm a bit worried about them.
>
> Sorry for the length of the post, but I had to get this off my chest. I found
> these shortcomings while building it, and once it was finished, I changed the
> front suspension immediately. But overall, I really like the car,
> the size of it is truly impressive, and the new suspension arms and pushrods
> are great (about time). And in case someody asks, YES, I am an engineer :)
>
> keep building!!!
>
> John
>
> PS. is the Mika Hakkinen Special Edition version coming soon?
Hi John
you missed the biggest mistake : the silver colour.
A F1 should have been red, Ferrari Red to be more precise :) and specially this
year :-)
With some friend we are joining our pieces coming from three 8448 to make it
the right colour, if you like when done I will send you a picture :)
Bye
PS : McLaren was forced to pay to send a truck of McLaren flag to be
distributed for free to the people attending the race in Suzuka, but the
people did not want the flags they had already bought by themself the Ferrari
flags
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Message has 1 Reply:
 | | Re: Silver Champion design comments
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| (...) ...... (...) this (...) Hi Marco I'm sure it would great in Ferrari-red as well.... let me know how your project turns out... I'm sure other LUGNET members would love to see it too! And yes, TLC's timing could have been a little bit better, (...) (24 years ago, 13-Oct-00, to lugnet.technic, lugnet.loc.it)
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Message is in Reply To:
| | Silver Champion design comments
|
| Hi everyone To all other Silver Champion owners..... I've just finished my McLaren... ...oops... Silver Champion, and have a few small complaints about the original design. 1st, why are there so many 3-long friction connectors used at the outboard (...) (24 years ago, 13-Oct-00, to lugnet.technic)
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