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How much power 1/5 scale vs 1/8 scale

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Old 03-30-2009, 08:39 PM
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Dirtdigger04
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Default How much power 1/5 scale vs 1/8 scale

Hey, i was wondering how much power these big 1/5 scale cars have. I have a 1/8 Sportwerks Mayhem that can easily get to 50mph pretty quick, but do these regular 2 stroke engines have more power than a small nitro engine. So what is faster. 1/5 scale or 1/8 scale.
Old 03-30-2009, 09:10 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

I have to say that if you compare engines, the 1/5 scales engines have more power. As far as speed, there are 1/5 scales that do about 30 MPH to some that top out at over 80 MPH
Old 03-30-2009, 09:34 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

ORIGINAL: Dirtdigger04

Hey, i was wondering how much power these big 1/5 scale cars have. I have a 1/8 Sportwerks Mayhem that can easily get to 50mph pretty quick, but do these regular 2 stroke engines have more power than a small nitro engine. So what is faster. 1/5 scale or 1/8 scale.
way lots of power, remember this 1/5 scale weighs somewhere 22 lbs and above and can go 50 mph + stock set-up....

here's a stock 5t speed attained.





1/5 scale is also lot better handling than 1/8 mt flips alot..
Old 03-30-2009, 10:13 PM
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speedy.d
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Default RE: How much power 1/5 scale vs 1/8 scale

1/5 scale can power thru terrain that would stop any smale scale car. bigger car, bigger engine,more torque!as for horsepower some of the nitro motors can put out some big numbers but torque is what you drive!
Old 03-30-2009, 10:24 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

a side by side race the nitro will win hands down. [:-]
Old 03-30-2009, 10:34 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: quarterscalelegends

a side by side race the nitro will win hands down. [:-]
Unfortunately, that is true. Nitro is very zippy, especially in accelreation. Nitro has several advantages to make up for the serious lack of torque: They are very light, and they are geared very very very high to account for the much higher RPMs of nitro engines. Well, they have to be geared high, because nitro engines downright suck as far as torque goes. Nitro engines are often lucky to even break one quarter of a ft-lbf (unless they are modded, then they can approach towards half a ft-lbf). They have to go with like a 14 to1 to 16 to one or even deeper to multiply that torque. And nitros being easily half the weight of a gasser seriously gives them an acceleration advantage, compare a 10lbf nitro truggy to our gassers that gravitate around 20lbf or more.
Old 03-30-2009, 10:42 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: speedy.d

1/5 scale can power thru terrain that would stop any smale scale car. bigger car, bigger engine,more torque!as for horsepower some of the nitro motors can put out some big numbers but torque is what you drive!
Damn straight! Our gassers, for a highly modded one, can approach 2.5 ft-lbf torque (from say a modded 6-7HP engine with good pipe).
Just what is 2.5ft-lbf when comparing that to nitro engines?
1ft-lbf is 192in-oz!

So, a nitro engine that peaks out at 50in-oz (typical for an RTR nitro .28ci engine) is barely making more than only ONE FORTH of a whole ft-lbf.
So, the 6-7hp gasser making about 2.5ft-lbf is making 480in-oz!

Gassers make so much torque we have to use much higher gear ratios to tame that torque: something like 8:1 where nitros have really deep gear ratios, like 14:1 or much deeper.
Old 03-30-2009, 10:50 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

Garmin GPS.. Baja 5B
Old 03-31-2009, 12:10 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

torque- this baja weighs 27lbs.. think a .28 can do this?

http://www.youtube.com/watch?v=9dLjSl0KeSM
Old 03-31-2009, 12:24 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

If I cant beat your nitro... Ill CRUSH IT!!!!


Old 03-31-2009, 12:38 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

Its pretty hysterical how my 1/5 jumps out of the hole. A 25lb. monster truck that will outright smoke the tires off the rear... C'mon! You know that'll get anyone to grin. The torque is UNREAL. It does right at 50mph. However, it takes a few seconds to get there. It is, after all, a monster truck. But besides the fact my 1/5 will roll over my 1/10 and keep truckin like theres no tomorrow, the thing handles way better on the track than my 1/10. Perhaps it's the weight issue and b/c the 1/10 is way lighter, and therefore less stable at high speeds. Now as far as who would win in an all out concrete drag race, or course the 1/10 nitro. The acceleration is gonna be way higher and be able to get to top speed much faster. But, I would have to say 1/5's are a BLAST. If I had to, I'd sell my 1/10 long before my gasser went.
Old 03-31-2009, 01:19 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

Towards the end of this vid a Baja and a Hyper 8 have a drag
Gives you an idea of the acceleration differences.
[youtube]http://www.youtube.com/watch?v=bQOIZYc3fHY[/youtube]

From my experiences 1/8 nitros with good engines will run rings around any 1/5th scale, even with a top of the line package. They just don't have the power to weight ratio.
Old 03-31-2009, 02:39 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

No doubt nitros are faster in every way, it's simple power to weight as Coopz said. Having said that though, it's a whole different ball game a 15kilo truck going 50 mph. Large scale is more fun and more rewarding, you need better driving technique as well.
Old 03-31-2009, 09:26 AM
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Default RE: How much power 1/5 scale vs 1/8 scale

Power and speed are 2 different things. It's all in relation to it's size, hp, gearing and weight. I can say that 80% or more of those who try gassers end up switching over from nitro. I did this over 5 years ago and never looked back.

Plus at less than $0.50 in fuel to run for 40 minutes non stop why would you not love it!
Old 03-31-2009, 11:52 AM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: savagecommander

torque- this baja weighs 27lbs.. think a .28 can do this?

http://www.youtube.com/watch?v=9dLjSl0KeSM
Sure can all day long with out having to find a bump to get the front end off the ground. The recorded for nitro is 109 MPH. I like my gasser but will NEVER give up my nitro. It is like compering oranges to apples.
Old 03-31-2009, 11:55 AM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: SELWA

Power and speed are 2 different things. It's all in relation to it's size, hp, gearing and weight. I can say that 80% or more of those who try gassers end up switching over from nitro. I did this over 5 years ago and never looked back.

Plus at less than $0.50 in fuel to run for 40 minutes non stop why would you not love it!
Other then fuel 1/5 scales are MUCH more expensive!!!!!! My race Savage I have some where around $1,500 in it and when I am done with mt HPI Baja 5B SS I will have around `$3,000 in it. [X(]
Old 03-31-2009, 12:04 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: 46u


ORIGINAL: SELWA

Power and speed are 2 different things. It's all in relation to it's size, hp, gearing and weight. I can say that 80% or more of those who try gassers end up switching over from nitro. I did this over 5 years ago and never looked back.

Plus at less than $0.50 in fuel to run for 40 minutes non stop why would you not love it!
Other then fuel 1/5 scales are MUCH more expensive!!!!!! My race Savage I have some where around $1,500 in it and when I am done with mt HPI Baja 5B SS I will have around `$3,000 in it. [X(]
Yeh, but that's an important part of why we form such strong relationships with our gassers, why we love them so much. They ARE worth it.
Old 03-31-2009, 12:17 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: 46u


ORIGINAL: savagecommander

torque- this baja weighs 27lbs.. think a .28 can do this?

http://www.youtube.com/watch?v=9dLjSl0KeSM
Sure can all day long with out having to find a bump to get the front end off the ground. The recorded for nitro is 109 MPH. I like my gasser but will NEVER give up my nitro. It is like compering oranges to apples.
No you can't. The point of their statement was that a .28 does not have enough power to pop a wheelie in a 27lb vehicle.
Old 03-31-2009, 01:12 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: 46u


Other then fuel 1/5 scales are MUCH more expensive!!!!!! My race Savage I have some where around $1,500 in it and when I am done with mt HPI Baja 5B SS I will have around `$3,000 in it. [X(]
So what?Gassers are the double size,hence the double money spent

1/8 versus 1/5 is beyond comparasion in my opinion,the whole impression with 1/5 with that roaring,deep sound,the weight and the appearance is absolutely unbeatable compared to the little nitrobee zumming aroundThat is my opinion
Old 03-31-2009, 01:51 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

ORIGINAL: Bmr4life


ORIGINAL: 46u


ORIGINAL: savagecommander

torque- this baja weighs 27lbs.. think a .28 can do this?

http://www.youtube.com/watch?v=9dLjSl0KeSM
Sure can all day long with out having to find a bump to get the front end off the ground. The recorded for nitro is 109 MPH. I like my gasser but will NEVER give up my nitro. It is like compering oranges to apples.
No you can't. The point of their statement was that a .28 does not have enough power to pop a wheelie in a 27lb vehicle.
OK then I do agree with that. But the engine in that video is MUCH bigger then the .28. the engine in the video is more thin likely a 23 or 26CC the .28 is 4.6cc That is like comparing a muscle car to a go kart. Or comparing oranges to apples.
Old 03-31-2009, 01:56 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

I think some of the price has to do with the fact of supply and demand. There are a WHOLE lot more people into nitro then 1/5 scale. Like I said I like my 1/5 5B SS a lot but will never give up my nitro's . Nitro are much more durable and you can jump them a WHOLE lot higher with out damage.
Old 03-31-2009, 07:42 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: Coopz

Towards the end of this vid a Baja and a Hyper 8 have a drag
Gives you an idea of the acceleration differences.
[youtube]http://www.youtube.com/watch?v=bQOIZYc3fHY[/youtube]
LOL, yeah, but the Baja will last 3times as long on a single tank than the Hyper!

Old 03-31-2009, 07:45 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: 46u

I think some of the price has to do with the fact of supply and demand. There are a WHOLE lot more people into nitro then 1/5 scale. Like I said I like my 1/5 5B SS a lot but will never give up my nitro's . Nitro are much more durable and you can jump them a WHOLE lot higher with out damage.
I agree here, Nitro is a different ball of wax and a different set of challenges than gassers. I too since last year, have put away my nitros in favor of my gassers, but last month, after breaking down and buying a gallon of nitro, have actually rediscovered the joy of nitro. The sound of nitro and the zippy feeling of the acceleration brought back some great bashing memories to me, and forthermore, I had fogotten how much I loved the smell of nitro fuel burning in a high revving RC! (I hate to say it, but gas stinks, really badly, when compared to nitros.)
Old 03-31-2009, 08:58 PM
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Default RE: How much power 1/5 scale vs 1/8 scale


ORIGINAL: Coopz

Towards the end of this vid a Baja and a Hyper 8 have a drag
Gives you an idea of the acceleration differences.
[youtube]http://www.youtube.com/watch?v=bQOIZYc3fHY[/youtube]

From my experiences 1/8 nitros with good engines will run rings around any 1/5th scale, even with a top of the line package. They just don't have the power to weight ratio.

Yea, but that Baja looks like and sounds like, a pig.
I have 3 large scales in my stable that would have ripped that rice burner up.
I'm not saying they are the fastest, but that for sure was no good of an example.
Old 03-31-2009, 09:12 PM
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Default RE: How much power 1/5 scale vs 1/8 scale

ORIGINAL: Pro5thScaleDistributors


ORIGINAL: Coopz

Towards the end of this vid a Baja and a Hyper 8 have a drag
Gives you an idea of the acceleration differences.
[youtube]http://www.youtube.com/watch?v=bQOIZYc3fHY[/youtube]

From my experiences 1/8 nitros with good engines will run rings around any 1/5th scale, even with a top of the line package. They just don't have the power to weight ratio.

Yea, but that Baja looks like and sounds like, a pig.
I have 3 large scales in my stable that would have ripped that rice burner up.
I'm not saying they are the fastest, but that for sure was no good of an example.
If you are ever in Georgia PM me and I will run you with my Hyper 8.5 Pro 1/8 nitro any way you want to run.


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