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Suspension bush advice please.
goodguydrew - 22/9/06 at 12:58 AM

What is the general advice for selecting suspension bushes? Do I:
1.Build the book spec arms and use "Herald" bushes
2.Build book spec arms and buy poly bushes? (Where from?)
3.Build arms with larger diameter bush tubes?
I don't intend to go racing.

Thanks for any advice.


airframefixer - 22/9/06 at 01:04 AM

not quite the answer to your question but another idea to float passed you guys.

i plan on using nylon bushings whith a steel inner sleeve. any advice on this. i see another locost builder had used these on his, not a new idea, any comments?


timmy - 22/9/06 at 06:00 AM

The Herald bushes will be slightly more compliant than the 'poly' bushes (I'm assuming you mean polyurethane).
I'm using PU on mine (book chassis) just because they were readily available.

Nylon ones would probably be too hard for road use - there is little or no compliance in them (so you could get away with using no inner tube). Nylon is a natural bearing material so can run fine on the shank of a bolt.

HTH,

Tim


Bluemoon - 22/9/06 at 08:32 AM

Even with Nylon you will need the central tube, this is the cush tube, it provieds the pivot once the bolt is tightend, other wise you will bend the brackets and bind the joint? Or have I missed somthing?

Dan


procomp - 22/9/06 at 08:43 AM

Hi westfield sell some herald type ones that have a softer shore rating than standard replacment ones they work really nice on a westfield but posibly a bit expencive but it is a case of just pressing them in to your wishbones once made as the pivot/crush tube is already in the bush.

Or there is the ones that almost all locost manufacturers use that only cost 30p a pair and then all you need to do is make your own inner pivot/crush tubes out of stainless and then machine it to suit every individual wishbone/bracket combo so they dont have a binding effect when tightend up.

cheers matt


goodguydrew - 22/9/06 at 09:03 AM

When you say "machine it to suit " do you mean adjust it's length? Or are you refering to it's diameter. Thanks.


robertst - 22/9/06 at 11:44 AM

i was going to make mine from regular steel.... cut and file to suit...

is that not good? i mean, the entire crush tube sits in the bushes, covered with grase...


t.j. - 22/9/06 at 12:42 PM

I'm using the peugeot 205 bushes. They have a 10 mm inner diameter. I have made them 12 mm.

They only cost 3 euro each.

The arms are 25 mm dia and 3 mm thick.
I'm building the avon-arms and made them longer (wide-track 147 cm)


brackets and bushes
brackets and bushes


[Edited on 22/9/06 by t.j.]


Danozeman - 22/9/06 at 01:43 PM

Id use poly bushes. All kit makers do them. Eg GTS, mk.

The inner tubes are just cut down tube. Aslong as the diameters right inside and outside.


procomp - 22/9/06 at 01:54 PM

Hi sorry i meant machine in lenght to stop the outer bush being crushed inbetween the bracket and resulting in stiff movement .

The inner pivot/crush tube needs to be in stainless as no matter how much grease you use you will not stop the moisture and rust getting in. Just ask any of the locost racers who regulary have to sort this problem out unless they use stainless .

cheers matt


dr-fastlane - 22/9/06 at 02:48 PM

I also use the Peugeot 205 bushes like T.J. does. Not drilled them up, but used an normal M10 bolt. And that works well.

Greets Roy.


Mark Allanson - 22/9/06 at 07:08 PM

Anybody got a part number for the 205 bushes?


t.j. - 22/9/06 at 07:12 PM

quote:
Originally posted by Mark Allanson
Anybody got a part number for the 205 bushes?



sidem 807605

Don't know the OEM number. It's the inner bush of the lower front wishbone.
It costs about 7 euro if you buy them by peugeot.

Grzt Theo


kp - 25/9/06 at 04:06 PM

procomp writes:
>Or there is the ones that almost all locost manufacturers use that only cost 30p a pair and then all yo...

What bushes are these, where to get?


welshboy - 25/9/06 at 08:19 PM

hi sorry to jump on the band wagon but could anyone tell me where i can get the standerd bushes from please im in the same boat