thenorthface
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| posted on 13/9/10 at 02:48 PM |
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Anybody seen this chassis setup ? Help
has anybody seen this front end done on a chassis before ? I bought the chassis last week and all I know it's been modified to suit a R1 bike
engine but I have noticed the front wishbones plates are they same top and lower (232mm) between the wishbone plates. The rear wishbones have been
done to the haynes roadster spec
Will this front setup work ? If so does anybody know where I can get the front wishbones done ? Help please
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big_wasa
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| posted on 13/9/10 at 03:03 PM |
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In my opinion the steering rack mounts need beefing up a bit.
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thenorthface
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| posted on 13/9/10 at 07:43 PM |
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the steering rack has been made the same as the haynes roadster, what you think about the wishbones plates being the same ? has the builder copied
another locost chassis ?
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interestedparty
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| posted on 13/9/10 at 08:28 PM |
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Looking at it, I'm guessing that the bottom brackets are as close together as the tops, which are standard (I don't have my Haynes book
handy).
If that is the case, then I would say that is a bad thing. I don't know for sure, but intuition tells me that it's the bottom wishbones
which take a lot of the reaction stress from braking, and that having narrow wishbones is a BAD thing.
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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thenorthface
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| posted on 13/9/10 at 08:36 PM |
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That's what I was hoping people wouldn't say being a BAD thing !
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Badger_McLetcher
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| posted on 13/9/10 at 09:08 PM |
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Yep, the bottom wishbones react most of the braking forces.
If disfunction is a function, then I must be some kind of genius.
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Mix
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| posted on 14/9/10 at 03:49 PM |
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Hi
Just to put this into perspective, (as I understand it), a Cortina upright will transmit the braking load in the order of 56% to the lower bone and
44% to the upper.
Regards Mick
[Edited on 14/9/10 by Mix]
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thenorthface
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| posted on 14/9/10 at 04:41 PM |
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Does that mean with cortina uprights it will be ok to have the wishbones the same width upper and lower ?
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Mix
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| posted on 15/9/10 at 04:08 PM |
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Hi
I would be trying to determine what the chassis is. Are you going to make your own wishbones? if so I'd rejig the chassis to either the Locost
or Haynes design and fit the relevant wishbones. Far too many unknowns to give a better response - sorry.
Regards Mick
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Badger_McLetcher
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| posted on 15/9/10 at 05:19 PM |
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quote:
Originally posted by thenorthface
Does that mean with cortina uprights it will be ok to have the wishbones the same width upper and lower ?
That's not quite the correct question- it doesn't matter if the upper wishbone mounts are narrower, larger or the same as the lower, as
long as the lower mounts are man enough to take the forces. Also you'll end up with some funny looking upper wishbones but hey 
If disfunction is a function, then I must be some kind of genius.
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