What are these arms?

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fred2000
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What are these arms?

Post by fred2000 »

Image

In looking around RC10Talk I stumbled on this image and I am interested to know what arms are these - Andy's?

Anyone know where to get a set - Front and Rear? Also do the Andy's front need special longer drive shafts?

Also is this a 870c or the '91 works chassis?

Any help would be appreciated.

Thanks, Fred
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Dual
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Re: What are these arms?

Post by Dual »

Hi Fred,

Those arms are Yokomo arms that came standard on the Works '91 and Works '93 (the '93 versions had a hole for the anti-roll bar). The versions in the photo have been modified somewhat with the centre sections being cut-out.

The chassis is a Works '91.

Vin

fred2000
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Re: What are these arms?

Post by fred2000 »

So the follow up question is, will the arms work on the 870c? Would any other parts need to be changed.\

Fred
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bscotti
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Re: What are these arms?

Post by bscotti »

Yes, Fred, they should bolt right on. What I'm not sure about is whether or not the bearing carriers and steering blocks from the 870c will fit these '91 arms. My hunch is yes. You may have to use the '91 shock towers, universals, wheels and wheel mounts to get everything in spec. I believe the '91 arms are a bit longer than the 870c.
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Mr. ED
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Re: What are these arms?

Post by Mr. ED »

bscotti wrote:Yes, Fred, they should bolt right on. What I'm not sure about is whether or not the bearing carriers and steering blocks from the 870c will fit these '91 arms. My hunch is yes. You may have to use the '91 shock towers, universals, wheels and wheel mounts to get everything in spec. I believe the '91 arms are a bit longer than the 870c.
Sorry but I have to disagree: at the gearbox side no-issue, but near the wheels: the hinge points on these 91 arms are far more outward and the carriers have less offset than their 870C counterparts

EDIT: for example on the front: the steering knuckle of an 870 C sits on the outside of the arm , while on the 91 it sits inside of the arm

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bscotti
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Re: What are these arms?

Post by bscotti »

Ah yes, I forgot that. Thanks for the correction!
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fred2000
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Re: What are these arms?

Post by fred2000 »

So that would mean to move to these arms - I can bolt onto the 870c but everything (knuckles, arm, universal) would have to be works '91?
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Re: What are these arms?

Post by Mr. ED »

correct, and to have the right offset; also correct hubs and wheels. Everything on the 91 is made for the arms to go as wide as possible: deep into the wheels with very little offset.

Trend of that time: if you compare the optima mid , or optima to the lazer you see the same evolution

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Re: What are these arms?

Post by Mr. ED »

off-topic but kinda cool: does anybody know who made that metal top with the cooling finns for the center axle?

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bscotti
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Re: What are these arms?

Post by bscotti »

I have one for those heat sinks in blue made by Litespeed.
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fred2000
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Re: What are these arms?

Post by fred2000 »

So Andy's did make replacement arms for the 870c - anyone else and how common are they?

I think I remember then from the time but I imagine they are hard to find now.

Fred
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Re: What are these arms?

Post by bscotti »

Andy's and RPM made replacements Andy's are less rare than the RPM but still not an easy find.
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fred2000
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Re: What are these arms?

Post by fred2000 »

The chassis plate above is the -91 works. Can you replace the 870c chassis plate with that one?

Might ebay one or look get one from fibre lyte.

Fred
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Re: What are these arms?

Post by Mr. ED »

yep straight swap, not sure if the battery straps are the same...

fred2000
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Re: What are these arms?

Post by fred2000 »

Which is the chassis shown on the fibre lyte site - is it the 91 works. http://www.fibre-lyte.co.uk/

Also if anyone has a '91 let me know - I am interested.

Fred
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