haynes roadster & locost wishbones ?

[thenorthface]

i have just bought a chassis off ebay and was told it was done to the locost book, i was wondering if the difference between wishbones are the uprights you use ? roadster for sierra and cortina for locost ? are the chassis mounts in the same place ?

[HandyAndy]

The Locost chassis is totally different to the Roadster chassis,

for starters The Roadster chassis is 2 inches wider & 4 inches longer than the Locost,

The Roadster is an IRS setup whereas the locost is "Live axled",

Or.... have you bought a "Roadster" chassis but has come with Locost wishbones?

Do you have a photo of the chassis? very easy to confirm from a photo.

cheers
andy

[aerosam]

Front wishbone mounting points are very similar, I think the haynes wishbones are something like 3mm wider iirc. I think they may a little longer as well so result in a wider front track, not too sure on that one though.

I'm using Haynes front wishbones on a locost chassis as I wanted to use the better sierra uprights. I had to make my own alignment tool to fit the brackets to the chassis, but this was no more work than making the normal haynes one, I just had to make a few more measurements that's all.

Also, it has allowed me to match up the width of the front and rear track, as I'm using a BMW E34 rear axle assembly, that is very wide. But that was just to suit me really.

[thenorthface]

sorry for the poor photos the chassis is in storage for awhile until i move house,

[David_17]

Doesnt look like a roadster to me. Similar, but bits are different.

[HandyAndy]

It looks like this chassis has been made to accept IRS, but its not a Roadster rear end, the suspension boxes ( CP3 & 4 ) are different, as is the positioning of parts D12, so maybe its a locost chassis to accept IRS ( slightly less chassis width), the front frame is also different & it looks like its been built to accept a bike engine.

Looks nicely put together

cheers
andy

[thenorthface]

Originally Posted by HandyAndy

It looks like this chassis has been made to accept IRS, but its not a Roadster rear end, the suspension boxes ( CP3 & 4 ) are different, as is the positioning of parts D12, so maybe its a locost chassis to accept IRS ( slightly less chassis width), the front frame is also different & it looks like its been built to accept a bike engine.

Looks nicely put together

cheers
andy

yeah its been made to take a R1 bike engine but am not sure what wishbones it will take ? i will have to measure the wishbone plates to see if they will suit the roadster bones

[aerosam]

Could it be this?

http://hellfire.locostsites.co.uk/he...RSAssembly.pdf

There are wishbone designs on here as well. Measure your mounting points and compare to this plan and the one in the Haynes book and you should find the answer.

I guess my earlier post wasn't actually that helpful, I didn't know you were referring to the rear end, as a normal locost doesn't have wishbones at the back.

[Bonzo]

Nice link Sam

It certainly loks to be a locost chassis with a Rorty rear end.

As said, use the book dimensions & compare them with your new chassis.