Subject:
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Re: 8880 Super Car motorization ideas?
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 15 Jan 2001 16:52:32 GMT
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Viewed:
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1159 times
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You have your finger on it, Ross!
It is the weight of the hubs and tires, I have decided, which exacerbates any
friction at the steering arm between itself and the knuckle ball and the
locking hub. I have been building an 8880 chassis from spare parts but with an
8448-style 5-speed and reverse transmission and one motor. I previously
reported sluggish performance. I have been rebuilding the transmission to bring
the shifter knob closer to hand (I'm using a tow ball instead of the axle with
stud as the shift gate is one brick's level higher) and not to intrude on the
dashboard so much. I have also completed an engine and the body. Since I only
have four of the locking hubs, I decided to share them between this assembly
and my original 8880, still built since 1995. It was at this point I realized
that I could make those axles blur in fifth gear and recognize the different
ratios as well. Things slow down a little when the locking hubs are installed
but by far the most significant slow down comes from just attaching the wheel.
So I do not blame the transmission, the multiple differentials, or the angle of
the suspension. In first gear, it would move fast enough on a table, say, so I
would have to grab it before it drove off the edge, so I guess that makes it
faster than a crawl. I did try installing two motors, but this blocked access
to the drive shaft of the engine, so I went back to one motor. Except for the
headaches caused by the steering link (which no longer has the room to pass
through the transmission) I managed without much violence to the original
instructions. The inboard slope pieces on the seat cushions had to go, to clear
the teeth of the idler gears of the transmission, the 8448 transmission is that
much of a shade over 6 studs wide. And there is no place for the "hand-of-God"
steering wheel, either.
In lugnet.technic, Ross Crawford writes:
>
> I think one big problem is the extra friction introduced by those special CV
> joint thingies. Because they're much larger diameter than standard axles,
> and there isnt really much holding them square in the steering arm piece,
> they generate much more friction than those in (for example) the 8448.
>
> ROSCO
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Message is in Reply To:
 | | Re: 8880 Super Car motorization ideas?
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| "Gaurav Thakur" <cp5670@supermail.com> wrote in message news:G6xB1n.Ln5@lugnet.com... (...) left (...) reestablished, (...) empty (...) this (...) the (...) what you (...) motor (...) transmission, so (...) that (...) was (...) I think one big (...) (24 years ago, 10-Jan-01, to lugnet.technic)
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