Mr. ED's yatabe bug : updated with action pics!

[Mr. ED]

The Yatabe rules say the suspension arms and transmission design have to be from 1989 or earlier for vintage cars.
So here's my nearly finished attempt to put some more fun into an ultima chassis with the original arms and gearbox.

Under the hood there's still some work to do, so nude pics are for later Here're the teasers.

EDIT: 1st time at KND cricuit today.
Action pic on the way, but naked shots at the end of the page already.

[MOmo]

Dahms Bugsy body?

Looks good. I like it.



MOmo

[AYKBOBCAT]

What are those tires? Cool!

[Mr. ED]

The shell is the lexan scorcher clone from Parma, been using this specific one for about 15 years already. It's incredible strong.
Here you see it on the previous car, with fenders still: http://www.rc10talk.com/viewtopic.php?f=5&t=663

Those tires are from Panther: these were the only allowed tires for the Ifmar World championships. I thought they worked well and look almost scale with this body.

[Mr. ED]

Well here it is: taking over lots of parts from its racing brother which is currently in the garage for another face-lift.

what's special? Basically I tried to make the best: most fun, of parts I won't use for my vintage-illegal racer.
And I'm pretty happy with the result sofar.

1) The in-length battery configuration was abandoned for the standard side-ways for 2 reasons:
- to lower the CG: making space to mount the electronics in the tub.
- to reduce the number of nose scrubs on the jumps. By shortening the chassis by an inch and inversing the front-arms the wheelbase is almost the same. The wheels are however further forward from the nose for the same ground-clearance in height.

2) Heavy old ESC: placed low and upfront for low forward CG.

3) Standard full-size servo right behind the battery: again to keep the CG forward and mounted standing up to allow lower mounting of the light receiver behind it.

4) original 2mm chassis: countersunk and using small-head screws: lighter than the 3mm turbo chassis.
This doesn't compensate for the heavier body and electronics, but it helps.

5) single arm steering swivel: to reduce the play in the steering. worked perfect, but as you can see in the pic I should have used a servo saver on the servo outdrive. I was in such a hurry to get the car track-ready I simply forgot
The horn in the pic was the 2nd servo horn I broke with 1 pack and it ended the fun at thtrack for today.

[JK Racing]

Mr Ed, what front hub/carrier combination are you using? It appears you have new RB5/ZX5 front rims/tires, and I have had this though also, since I race both, for one of my RC10's.

[Mr. ED]

Those are from an optima mid. (well TF-1 option parts, but they are all the same in design)
On another car I'm using the new RB5 set-up: It's narrower so it is usable with the longer andy's arms.

[RichieRich]

I really like this bug. It's also nice to see Ultimas getting their props.

Do you get any weird camber changes with the arms inverted and the bend in the upper link?

[Mr. ED]

I really like this bug. It's also nice to see Ultimas getting their props.

Do you get any weird camber changes with the arms inverted and the bend in the upper link?

Thanks for the encouragement

The arms swing over the same axle still so the movement is the same. I also didn't have to increase the down angle much as the large modern wheels and tires make up for the loss of ride-height from inverting the arms.
The upperlinks shape doesn't matter: as long as the part between the attachment points is rigid, the action is no different from a straight axle. I had longer ones; running straight and in front of the shocks earlier, but they got bend when hitting the corners (REALLY need more practise)

[knucklebuster]

Sweet ride Mr. Ed!

[Mr. ED]

grass doesn't make for the nicest action pics but I hope you still like these:

[Dr. Robotnik]

Awesome. Were you taking pics and driving?

[bearrickster]

Looks like fun!! I like the flyin grass. I am jealous though all of mine are in peices getting re built. I scored 3 cases of old Losi parts for 50 bucks at my local hobby store and thought it was time for a major rebuild. but they havent been apart in ten or so years they were due. love the pictures

[Asso_man!]

Great action pics ED, looks like you had some fun

[Mr. ED]

Thanks guys,
I would have had more fun if I had glued the back tires on the rims; after half a pack I got tired of pulling them back on to the wheels.

pulling tires.jpg (65.92 KiB) Viewed 2950 times

pulling tires.jpg (65.92 KiB) Viewed 2950 times

I ran my latest project last weekend with the same wheels and tires, but it had a slipper and milder moter, so that went all well.
http://www.rc10talk.com/viewtopic.php?f=5&t=2172&st=0&sk=t&sd=a&start=15

The reason I didn't glue them yet is not because I don't know better, I just want other tires on this Tamiya wheels at some point in the near future.

I drove, the misses took the pics, and I just cropped them later: here she is:

IMG_3582_cr.jpg (225.61 KiB) Viewed 2950 times

IMG_3582_cr.jpg (225.61 KiB) Viewed 2950 times