100cc twin cylinder 2-stroke 4WD

[JariV]

100cc twin cylinder 2-stroke 4WD with 3 differentials and 600mm wheelbase.
Started a new project yesterday by making a new chassisplate, differential service and billet aluminum diff housings.



Let's see how it comes out. I need a new toy for the winter to have fun with.

[Mike Casey]

glad to see you back. Great project!!

[JariV]

Thanks.

It was time to do something again. And no, I'm not selling differentials, the billet cases were just some parts that I bought online and thought they should fit because they are Nutech parts and the axsles i'm using are Carson CRT. Same guy has designed both so it was very nice to see that Nutech bolts right up instead of Carson diff housings.

Now I'm waiting for the pinion and spur gears to arrive and then I can start to make the clutch and primary drive. After that engine location and center diff location.

[JariV]

Lot's of progress:

[JariV]

All mechanical and electrical work done. The only thing remaining is painting the body. And giving this one a name of it´s own.

Pics maybe tomorrow.

[JariV]

Basics:
- Wheelbase currently 600mm (23.62 inches)
- Overall length with Ford Escort body 960mm (37.8 inches)
- Track width (adjustable between 480 - 550mm (18.9 - 21.65 inches)
- Weight 19,9kg in full driving condition with body on and full tank of gasoline
- Four wheel drive
- 3 silicon filled differentials, rear, center, front, aluminum diff housings (Limited slip diffs available)
- front and rear disc brakes with longitudinal adjustable brake arm
- independent suspension on all corners
- layout with much resemblence to 1/8 offroad cars
- 5mm thick aluminum chassis plate

- Engine 100cc aviation twin cylinder flat two stroke engine modified for car use, selfmade twin exhaust, 22mm Walbro carburator, adjustable CDI ignition, stock power 10,2hp
- engine is now ported and piped, new power target is estimated to be around 15-20hp
- Arkansas 3-shoe clutch made for BZM 50cc engine, adjustable
- Self-made starter "system" (same style as old English outboard marine motors
- Carburator and air cleaner are the only parts above the top level of the tires, very low center of gravity
- Targeted max speed 100 km/h @ 10.000 rpms

- Modified primary gears to have direct drive from clutch gear to center differential (90 degree center diff gears eliminated = less power loss)
- Fully adjustable silicon shocks with ajustable shock mounts, vertical wheel travel 100mm with current track width, 140mm with widest adjustable track width
- 750ml fuel tank, 4% premium gasoline with Elf Competition 2-stroke oil
- Jumbo (Hitec, Rhino) servos on both steering and throttle/brake
- 4600 Mah battery
- Extra large 4-stage airfilter
- Aluminum wheels, Baja 5T
- Hostile MXTs, ice spikes (64 pcs / one tire)
- Futaba 4PK transmitter

I still have the paintjob to think about. Otherwize fully ready for testing. This car would be VERY easy for mass production. Wink wink if someone is interested

Pictures:








































What do you guys think?

[JariV]

Name in short is:

BAJA SRT4

(100cc twin cylinder 2-stroke 1/4 scale)

[a187lbird]

WOW just WOW !!!
Thank you for sharing this. This car is amazing if you ever decide to run it PLEASE post the video.

[M.R. Ogle]

Very impressive piece of engineering!

[eightman]

this Escort will... fly!!! i really wonder how it will sound with 100cc! nice job for this cheap model (compare to the big buggy you did )
bravo!
Stef

[ceyhun34]

veryy goood

[JariV]

Ok Funky, I can do that. Nice to see you again here. Long time.

Here's my previous one that I made from scratch (the ugly human being in the pic is me for size reference, I'm 200cm tall):



Quarterscalelegends was the initial site where I introduced that car internationally. Unfortunately the original discussion and pics were lost due to the site crash here. Here's the tech and discussion that is existing in English:
http://www.hpibajaforum.com/forum/sh...ad.php?t=55476
http://www.hpibajaforum.com/forum/sh...ad.php?t=55761
http://www.rcuniverse.com/forum/m_86..._1/key_/tm.htm

Here's more of that car:

[JariV]

Actually I really miss that car. I hope to see it again some day but that's not so likely to happen.

[JariV]

Above links are not working for some reason. I will try again:

http://www.hpibajaforum.com/forum/showt ... hp?t=55476

http://www.hpibajaforum.com/forum/showt ... hp?t=55761

http://www.rcuniverse.com/forum/m_8654960/tm.htm

[JariV]

Two project photos. First one is about grille cutouts (vent holes) to supply cleaner and cooler airstream to carburetor and cylinders. Second one is for show; bigger brushed aluminum exhaust tips [:D]