Here's some pics of my modified Kyosho Inferno TR15 dirt oval car. I built it for our club's 1/10 scale dirt oval unlimited class. It's maiden voyage was this past Sunday. Without knowing how it was going to be on fuel, I decided to go with a twin tank set-up. It turns out, I didn't need both, so the front one is going.

This is definitely a work in progress. If there's interest, I'll keep this thread current on my progress.

This was stock:

where did u get that body?[X(] i want it!!!!!![8D]

It is an old "Road Kill" body from factory works. They sold the rights to it to DEANS (the connector people). Factory Works still sells one very similar (almost identical)

Here's a link to their site:

http://www.factoryworks.com

hey thats a cool site, i have a quick question, do they come un-painted?[:-]

Mine did.

What kind of engine and pipe are you using?

The engine is a Picco Maxx 21 and the pipe is from RD Logics.

Some of the modifications include:

removing the radio compartment
relocating the throttle servo to accomodate a slide carburetor
Kyosho gold shocks (soon to be replaced with associated units)
relocated steering servo
OFNA big block engine mount for the HPI Super Nitro RS4 (some chassis modifications were required)
Kyosho Super10 100cc fuel tank in the rear
Stock 75 cc tank relocated to left side of car for weight distribution (soon to disappear as it's not needed)

How did you do in the race?

Pretty good for it's first time out. I came in third in the A-main. I need to find more traction and a little more suspension travel.

that car is so cool. makes me want to do that mod to my tr15 too.
keep this thread alive and let us know the progress on the car

Whoa - that's pretty wild!! How did you manage to do that?

Well, it started life as a stock Kyosho Inferno TR15. I bought the car to race in my local track's dirt oval 1/10 open class (nitro and electric, run what you brung and bring alot class). I used to race a custom creation that started life as a Kyosho MP-5, but the 1/8 scale coversions were outlawed the year before.

The kit comes with bushings, so I added full bearings during the assembly process.

Knowing the stock kyosho engine wouldn't be up for the task, it was swapped out for a Mugen MT-12 rear exhaust engine with associated pipe.

Being a nitro/electric class, races last 6 minutes. The 75cc tank would be extremely tight for time. Not wanting to go to an 1/8 scale tank, I found a 100cc one from a kyosho super10. While I was at it, I also picked up a pair of kyosho special differentials (hardened steel units replacing the stock cast ones). Completing the drive train were front univeral drive shafts.

With a larger tank and a slide carb engine, I needed to rearrange the chassis. Out went the radio box. After relocating both servos and new tank, the chassis layout was pretty much complete (the second tank was a very recent addition that has since been removed).

To compliment the chassis, I replaced the stock plastic shocks with some kyosho gold shocks (best shocks you could get in the '80s).

In this configuration, I won several A-mains and finished no worse than 2nd.

In my never-ending quest for more power and speed, out went the mugen 12 and in went a Picco Maxx 21 with RD Logics pipe. To fit the engine, I needed to cut new engine mount slots on the chassis. For an engine mount, I used an adjustable one from OFNA.

When it came to mounting the current body, I used a Jammin Jay rear graphite shock tower for an MP-6 (with slight modifications).\


Now all I have to do is find some traction.

how much did all that cost you? and how much speed to you get out of it?

I really don't like thinking about costs. It gets downright embarassing.

Inferno TR15 - $230
Super10 Tank - $20
Optional diffs - $95 each ($190 total)
shocks - $50
graphite brake disk - $15
engine - $190
pipe - $60
front universals - $40
bearings - $30
engine mount - $20
clutch (flywheel, shoes, springs, bell) - $50

If I stop counting there, I'm at about $900 (all numbers are in U.S. funds) before misc. parts, body, and radio gear.

but i bet it is all worth it when you see the look on peoples faces when you nail it w.o.t andbeat the opposition!!!

Update time:

I've finally resumed project Inferno TR21.

Here's the rough cut of the chassis (plenty of work to do) and the rear bulkheads.

I have never seen a Dirt Oval - I am picturing a 400m running track on clay, am I anywhere close?

You're pretty close. The track isn't that large (approx. 100-120 meter). The picture doesn't do the banked tri-oval justice.

It looks pretty fun - is it just WOT from start to finish?

No. You need quite a bit of throttle control to adjust pitch and your driving line through the corners. Too fast and you're into the guardrail

cool - I dont think there is anywhere near me with a setup like that, but it does look like fun.. plenty of opertunity for practicing your drifting - and burying your opponents in Roost

hey man
thats quite impresive. i was thinking of getting a tr-15 to play with around my house. any idea how much power the stock engine has gx15r (i belive) could it pull wheelstands if not can your hotted up one pull wheelstands. and can you get a 2 speed for these car's.
btw that is a really cool project
p.s as you can tell im new to rc nitro cars

ive just bought an inferno tr15 and i want a decent engine hopup is there any good cheap ones

Any side exhaust OS small block, along with the engine mounts and flywheel are all you need to make it a little rocket. There's really no need to go with much more than a .12 cvr (the car's so light, all you end up doing is roasting the tires with more juice....trust me).