Delrin Arms for '94 YZ10

[stickboy007]

Arms installed. Pics below (despite the Pavidis towers, this is a '94. I got the towers from eBay). Had to widen the inner and outer hinge pin holes in the rear, and the inner holes in the front, by just a bit with a Dremel. Also needed to shave the shock mount opening a bit, to fit the ball end that mounts into the bottom of the shock. Looks pretty good...

Since these arms are flat, as opposed to the stock arms which have kick-down, the ride height will be a little lower than stock. The reason the stock arms have kick-down is to enable more droop, since the kick-down basically wraps the arms around the ends of the chassis which otherwise blocks straight arms from traveling down further (the 870C has this problem and is partly why it does not jump well). This gives more suspension travel upon landing, and also allows the front to rise up more when accelerating up a jump, which in turn should keep the front from diving mid-jump.

One **could** shave the chassis at the rear of the front arms, and the front of the rear arms, to bring this level of droop back with the Dynotech arms (similar trick can be applied to the 870C to get more droop, since that chassis uses straight arms. I've done this - it works). I want to keep my '94 chassis as-is, so I opted not to do this. In any case, the ride height is pretty reasonable and comes in close to my B44.

Overall, I'm happy with the arms. The feel very solid and they add a great look to what is already a beautiful chassis.

[rc10uk]

Nice work, lovely yokomo indeed.

[stickboy007]

Thanks.

I have been debating on whether to put a brushless setup in there or go full vintage. I just bought a Novak Hammer and have some old Reedy Sonics lying around, which are both era appropriate. Those will go in there for now...

[ralphee]

Is there a direct link on where to buy, i cant find a Dynatech listing these parts?

lee

[stickboy007]

I'll contact Chad and ask if they can update their webpage with a product link, but in the meantime I think you'll have to just send them an email if you want to order these parts --> [email protected]

[ralphee]

Contacted Chad, and he had no clue what arms i need, just that he has made some as customs lol, not great business practice but, do we maybe have a part number so i can narrow the selection and actually make an order?

lee

[stickboy007]

I did not get any part number. You can try telling him that you're interested in the Yokomo arms that he custom made for Reinaldo Vega (that's me), and send him the picture I posted above of the arms.

[ralphee]

Reinaldo, ill try that bud, id like to have him make some 91 arms if i cant get them done in the UK!

Lee

[ralphee]

Well two e mails later, and I'm yet to hear anything back, even sent a picture, with words and everything, it was beautiful, you shoulda seen it.....was so proud...but alas, it seems Chad is rich enough to buy his own island already!

[stickboy007]

That is very strange. He was usually quick to reply to me. Maybe give him a few more days...he might be busy or out...? I can try contacting him...

[ralphee]

If you can reach him bud cool, id appreciate it! Was also wondering, reckon these would be adaptable to a works 91?
Trying to find 91 arms is driving me nuts now, wondered if these would work seeing as there is no kick up in the arm!

Lee

[stickboy007]

I sent him an email asking for part numbers for these. I'll let you know if I get a reply. As to your question...

I had toyed with the idea of using '94 YZ10 arms for the 870C (which have the same front and rear bulkheads as the '91 works). The length of the opening inside the '94 arms is longer, and so you'll need spacers either in front of or behind the arms to eliminate play (that would actually be a nice feature to have, to allow for wheelbase adjustments). Not sure about the '91 arms, but at least compared to the 870C arms, the '94 arms are much wider and so you'll need '94 universals (or Kyosho/Tamiya universals of comparable length). In theory, I think it can work...

[stickboy007]

So I heard back from Chad about the arms. When he made my arms, he was short on time and only had time to make programs for the profiles of the arms, but not the holes (which he drilled manually). For him to make another set, he'd need my arms again to measure the holes.

I am going to try to measure the hole co-ordinates myself and send him the data, so that way I don't have to ship anything out again. I asked him if that would be sufficient for him to complete the programs for these arms. Will hear back from him soon...

[ralphee]

Ok cool bud, see what you guys can arrange. Id just love to get a set to trial on the 91 TBH.

bests.......lee

[stickboy007]

I sent him the measurements.