Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: arvindsiv on August 01, 2009, 09:45:08 AM

Title: Transmission for 3.5 cc engine powered robot
Post by: arvindsiv on August 01, 2009, 09:45:08 AM

hi
I live in india.I need a transmission system for a 3.5cc engine powered robot. any suggestions?

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: gaurav.p on August 02, 2009, 03:21:52 AM

search for brc hobbies in Google.i hope they have it .
i guess u need the engine for competition in  techfest or some other competition??
and nice  to meet a Indian robotic enthusiast in the forums.

-gaurav

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: I LIKE PI on August 04, 2009, 12:08:13 AM

I'm currently working on a robot with a five-horse engine on it. I just used a clutch and chain design for it. What exactly are you trying to build?

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: matt liao on August 04, 2009, 12:22:05 AM

3.5cc engine? it's for automobiles not for robots, your question is very complicated, I guess no one can answer it. 

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: Truckstop on August 04, 2009, 03:39:22 AM

First off, No offense to anyone.

3.5cc is for rc car / uav app's and runs on a fuel called nitro not exactly a full size automobile engine, the smallest car engine i know of would be the the Geo metro's 3 cyl which has a displacement of about 75cc, you might check hobby town USA? the people who work there are kinda a$$ holes but there website was pretty good last time i was on it.

Also note...
3.5cc = 0.21358310433 Cubic Inch's

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: gaurav.p on August 04, 2009, 03:42:12 AM

there are engines in this category and these are mostly used in the field of RC racing.they are very costly and the fuel is also very costly.

-gaurav

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: wil.hamilton on August 04, 2009, 07:53:39 AM

if the engine is indeed an RC car enginge, which it's sounding like it is, i would try to find more information on the motor and you can then find transmissions to go with it.

 plenty of RC hobby sites sell RC car parts/kits/engines, so you  should be able to find something to suit your needs

try
towerhobbies.com

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: iflymyhelishigh on August 04, 2009, 05:52:33 PM

Hey there. Now, a 3.5cc engine would be a nitro engine. The best nitro engine that I know, which is ALMOST 3.5, is a Traxxas TRX 3.3. This engine is a 3.3 CC engine, and is almost to your needs. I would recommend using a TRX 3.3 with an EZ-Start, its an electric starter. Makes it SO much easier.

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: matt liao on August 04, 2009, 07:31:43 PM

 :'(
I made a mistake, I misunderstood 3.5cc as 3.5 liters, if it's 3.5 liters, it would be a real car engine...

Title: Re: Transmission for 3.5 cc engine powered robot
Post by: ArcMan on August 05, 2009, 03:01:00 PM

IMO, a small liquid fuel engine is a bad choice for a robot.  Those engines are designed for high-performance RC car racing, and not necessary to accomplish a robotic task.  Electric motors are much easier to work with and will probably meet your needs.  A gas engine certainly has advantages when you're talking about larger horsepowers (like 5 HP), but not for something so small.