Stretched chassis revo based large scale on roader - Page 2 - RC-Monster Forums

mistercrash · 10:58 AM

This is a cool project. In board shocks with cantilever suspension, narrow chassis, hmmmm.... I see an F1 or an Indycar. I thought FTW was for Feed The World.

What's_nitro? · 06.03.2009, 11:05 AM

Linc I was just thinking it would be really cool if the truck had a working tailgate on it!

lincpimp · 06.03.2009, 11:08 AM

Quote:

Originally Posted by mistercrash

This is a cool project. In board shocks with cantilever suspension, narrow chassis, hmmmm.... I see an F1 or an Indycar. I thought FTW was for Feed The World.

Yes, it would make a cool indy chassis with some mods.

SpeedAssault · 06.03.2009, 12:25 PM

oh yea I have some of that tire compound.
wish you knew where you got those tires. that's heck of alot easier to mount than my FG wheels with square hub and 5/16 hole

How did you find the body ? very cool to use a truck, maybe slamm it or do like a stock race car/truck or somethin

Hey Linc did I infect you with the super sizing of a emaxx/revo ? Glad to see someyone else doing it

nitrostarter · 06.03.2009, 12:27 PM

Quote:

Originally Posted by SpeedAssault

Hey Linc did I infect you with the super sizing of a emaxx/revo ? Glad to see someyone else doing it

LOL, nah linc is stretching a bunch of R/C's at the momnet. He's just trying to compensate for shorter lengths...

lincpimp · 06.03.2009, 12:39 PM

Quote:

Originally Posted by SpeedAssault

oh yea I have some of that tire compound.
wish you knew where you got those tires. that's heck of alot easier to mount than my FG wheels with square hub and 5/16 hole

How did you find the body ? very cool to use a truck, maybe slamm it or do like a stock race car/truck or somethin

Hey Linc did I infect you with the super sizing of a emaxx/revo ? Glad to see someyone else doing it

I got the tires from an old hobby shop that went out of business. I just wish I kept the packaging... I really like projects, and the larger scale stuff is just cool. I have wanted to do a stretched revo for a while, just did not have a body to go on it. This truck will be slammed to the ground, street only!

I will get the number off the body ,and google it to see what it is supposed to be used on, probably a FG or something similar.

Quote:

Originally Posted by nitrostarter

LOL, nah linc is stretching a bunch of R/C's at the momnet. He's just trying to compensate for shorter lengths...

You liked it, so I guess it was big enough for you. And given your considerable experience with this sort of stuff that says alot. I still cannot believe you spiked my drink, I guess there was no other way...

Overdriven · 08:48 PM

Very cool linc. Nice to see another stretch coming together. The body maybe FG size, but its not FG, Firehammer maybe?. FG has the front grill/headlights in a separate section that bolts on to the main body. Cool body either way, I'm digging the scale street truck look. When my 1/5 e-revo is done more scale looking project is in my future.

lincpimp · 12.15.2010, 02:19 AM

Back on this after a year or so... Thinking a CC 1520 motor on 6s lipo... Or maybe hv something or other, hell I could go 8s with the 1520 motor.

Need to get the tranny mounted and see how it goes from there. Plan to have all the evenings free between xnas and new year. Hope I can get some work done on this and the 7th scale lighning street.

lincpimp · 12.15.2010, 02:24 AM

Ok, have a choice between the old emaxx tranny setup as a single speed or an e savage tranny I have laying around. Pretty sure the old emaxx tranny will be stronger.

Here are the speed calc numbers:

E Sav tranny:

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1.736842105263158
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 25
Total Voltage: 22.20
Motor KV: 1577
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.008
Spur/Pinion Ratio: 1.84 : 1
Total Ratio: 10.57069 : 1
Tire Circumference (inches): 17.28 inches (438.88 mm)
Rollout: 1.63:1
Total Motor Speed: 35009.4 RPM
Vehicle Speed: 54.19 mph (87.05 km/h)
Effective KV Value: 1577

Old Emaxx tranny:

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 25
Total Voltage: 22.20
Motor KV: 1577
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.008
Spur/Pinion Ratio: 1.84 : 1
Total Ratio: 10.48171 : 1
Tire Circumference (inches): 17.28 inches (438.88 mm)
Rollout: 1.65:1
Total Motor Speed: 35009.4 RPM
Vehicle Speed: 54.65 mph (87.79 km/h)
Effective KV Value: 1577

Not much difference, so I will likely stick with the emaxx tranny with the gmaxx single speed setup. Need to dig this stuff up. Found my rcm hybrid cases earlier so I just need to scare up some diffs. Might just make the rear driveshaft out of some cut and glued revo sliders.

Overdriven · 12.15.2010, 09:36 AM

Wow, digging up the old projects! Wasn't this one up for sale at one point? Personally I'd keep it Traxxas with the Maxx tranny.

I did the cut and paste thing for the driveshafts on my stretch chassis Revo, it worked well. Except for the one shaft that came out of the mold bad from the factory, didn't notice it until it slapping the chassis from being out of balance. The thick shafts normally for the wheels will work in the rear. For the front and the lack of room the steering assembly makes, have to use the thinner shafts. Up front mine was double the length and it held up great.

lincpimp · 12.15.2010, 11:20 AM

Quote:

Originally Posted by Overdriven

Wow, digging up the old projects! Wasn't this one up for sale at one point? Personally I'd keep it Traxxas with the Maxx tranny.

I did the cut and paste thing for the driveshafts on my stretch chassis Revo, it worked well. Except for the one shaft that came out of the mold bad from the factory, didn't notice it until it slapping the chassis from being out of balance. The thick shafts normally for the wheels will work in the rear. For the front and the lack of room the steering assembly makes, have to use the thinner shafts. Up front mine was double the length and it held up great.

Yep. no one wanted it so I figured I would finish it up.

I think the revo driveshafts will work fine, just need to make sure they are straight so I do not have the issue you had.

mac3194 · 12.15.2010, 06:33 PM

looks great!! i wish i had skills like that lol

coolhandcountry · 12.15.2010, 07:13 PM

I am interested to see it closer to finished product.
Looks good so far.

lincpimp · 12.16.2010, 12:02 AM

Quote:

Originally Posted by mac3194

looks great!! i wish i had skills like that lol

Not that difficult, give it a try! Making the tubular roll cage and body mount will be fun... Probably going to use thicker brake tubing and try to bend as much as possible. Welding tube that small is fun...

Quote:

Originally Posted by coolhandcountry

I am interested to see it closer to finished product.
Looks good so far.

Me too. Just need some time. Kitchen remodel is coming to a close so I will have more free time.

mac3194 · 12.16.2010, 11:39 PM

my next build would probably be a 1/5 scale truggy?? shouldn't be so difficult i like making custom 5th scales. im only able to make thing like this because im in vocational machine shop at my HS and next year i am gonna have 3hrs a day to machine anything i want.