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Is 4 lbs. to heavy for a 1/10th scale car???

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Is 4 lbs. to heavy for a 1/10th scale car???

Old 02-08-2008, 01:00 PM
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Brent Davis
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Default Is 4 lbs. to heavy for a 1/10th scale car???

Just as the title says. How much does 1/8 th scales weigh too?
Old 02-08-2008, 05:58 PM
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ferrarimk13
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

wait, dont confuse, which is it the 1/8 or 1/10? if its 1/10 it should be around 2 pounds, so where the heck are you getting the extra two pounds from? lol time for a diet.
Old 02-08-2008, 07:02 PM
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Brent Davis
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

LOL. Didn't confuse. The subject line asks is 4 lbs too heavy for a 1/10th scale car and I asked what does 1/8th scale cars weigh "TOO"?

My TC3 started as a new stock car but I added a .21 big block and Mugen 1/8th scale wheel/tires and never knew what it weighed in stock form with the little .15 and small tires on it. I used a digital scale from work today and saw that it was 3.9 to 4 lbs. so that is where the heck I got added weight from. I just wanted to know what normal weight is for a 1/10th scale ride, that's all.



Old 02-08-2008, 07:08 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

lol, i wasnt mad, i was just saying it jokingly, but i guess it came out wrong. i guess with that big block and stuff, itll be like 4, but a competition car, im guessing weighs two pounds, but i guess not all cars are equal, lol. I know my buggy weighs around 8 pounds.
Old 02-08-2008, 07:57 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

ORIGINAL: Brent Davis

LOL. Didn't confuse. The subject line asks is 4 lbs too heavy for a 1/10th scale car and I asked what does 1/8th scale cars weigh "TOO"?

My TC3 started as a new stock car but I added a .21 big block and Mugen 1/8th scale wheel/tires and never knew what it weighed in stock form with the little .15 and small tires on it. I used a digital scale from work today and saw that it was 3.9 to 4 lbs. so that is where the heck I got added weight from. I just wanted to know what normal weight is for a 1/10th scale ride, that's all.



..........................Hey Brent I went to Tower Hobbies website and looked at a couple of the 1/10 scale cars they sell, they usually list the weights, anyway a mugen 1/10 scale car weights 3.21 pounds without a motor and a Hara R-40 weights about 3.70 with motor so your TC3 is not a super heavy weight put it does weight a little bit more that its .12 size little brothers.
Old 02-08-2008, 08:14 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

1/8 scale onroad weight appox 4.5-5 pounds Brent
Old 02-08-2008, 08:41 PM
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Brent Davis
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

WOW! I don't feel so bad then that a Mugen without an engine is almost the same weight as my TC3 with an engine. I guess I can shed some weight with some carbon fiber pieces then. I'd like to get it to 3 lbs. if possible.

BTW, looking at the pics of the NEW TC3 chassis, I've been running the car and man is it a beast. I bought a new Integy tire lathe and cut the tires WAAAAAAAY down and that helped it damn near 95% from the way it was acting with the tires new from Mugen. The plan is to run it hard this spring/summer and take some vids if I can get someone to video as I run it and radar it.

Where are you with yours nitrohead?

Thanks ferrarimk for your input and no pun was intended from me either.
Old 02-08-2008, 09:58 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Hey Brent I can't get a break or maybe I am getting too many of them !! I re-injured my hand breaking up a fight at school so I am still going at a snails pace. I am going to have to remake my motor mounts did not measure them right the first time and they were too tall.[] I bet your car handles pretty good does'nt it with those 1/8 scale tires??
Old 02-08-2008, 10:23 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

[/quote]
..........................Hey Brent I went to Tower Hobbies website and looked at a couple of the 1/10 scale cars they sell, they usually list the weights, anyway a mugen 1/10 scale car weights 3.21 pounds without a motor and a Hara R-40 weights about 3.70 with motor so your TC3 is not a super heavy weight put it does weight a little bit more that its .12 size little brothers.
[/quote]

maybe that extra 0.3 of a pound is with a full tank of gas?
Old 02-09-2008, 02:07 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

The BRCA min weight for a 1/10th car is 1750grams or 3.86 lbs. Josh Cyrul won the winternats a few years ago with an FW05 that was 1850 grams or 4.08lbs so its normal. The min for 1/8th cars is 2500 grams or 5.5lbs

Cheers
Old 02-09-2008, 08:57 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???


ORIGINAL: ziggy12345

The BRCA min weight for a 1/10th car is 1750grams or 3.86 lbs. Josh Cyrul won the winternats a few years ago with an FW05 that was 1850 grams or 4.08lbs so its normal. The min for 1/8th cars is 2500 grams or 5.5lbs

Cheers

Now that is very information to know. Maybe I will just add a few carbon fiber pieces anyways and do that hardcore racing lightened chassis to help for more speed.



Anyone got anything else to add for shaving weight on a TC3?

Nitrohead, let me know if you need some help making some big block mounts for a TC3. I made mine with aluminum stock, drilled and tapped it and installed. I also fabbed my pipe to work as well. I found out by cutting down the tires dramatically increased chassis clearance and I had to cut very, very minimal upper plastic off the upper chassis and none of the aluminum chassis.
Old 02-09-2008, 10:10 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

titanium screws wil lsave a few ounzes. It matters in electric, but not so much in nitro. The 1/12 minimum weight is 28 ounzes, so those few really help, lol. titanium is a lot stronger, but aluminum is 1/3 the weight of your present stuff. so i would probably go with aluminum in the less stress area.
Old 02-09-2008, 10:19 AM
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Brent Davis
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

ferrari, that is good to know as I thought titanium was lighter. Hmmmm, learn something new everyday.

I'll start looking around for some aluminum scews now.
Old 02-09-2008, 10:24 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

yeah, check rcscrewz, they definitely have a NTC3 screw set for like $20, but where you think is a high stress area, keep the stock ones.
Old 02-09-2008, 04:51 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Brent , thanks for the offer to help on the motor mounts but my doctor told me that some light physical activity will help my hand heal up faster. I finished off one mount already starting on the second I wonder about that hardcore chassis it was designed a few years ago for TC3's running .12 motors which are not as powerful as yours!! I hope your modified big block does not make the chassis flex won't know until you try it however.
Old 02-09-2008, 08:51 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Brent I just finished my engine blocks I will post pictures tommorrow.
Old 02-09-2008, 09:31 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Good news nitrohead. Definately post pics man. I want to see your progress and YES the car handles very well with the 1/8th scale tires. I found out today under some hard acceleration pulls that the front tires went into tire shake BAD. I disconnected the driveshaft so that just the rear was pulling and the car was acting as if the clutch was slipping but it was the rear differential that was slipping the ring gear. I held the car down and gave it some throttle and the clutch bell was indeed engaging hard to spin the pinion gear but not the rear tires so out came the diff to meet mr. JB Weld......LOL. I already had to do that to my other TC3 anyways but I thought maybe because that diff was old and tired but I am guessing that the .21 has way more TQ and HP that this stock diff can take.

I am going to hold off on that chassis since it is very pricey and with a CNC machine at my job, I can machine the one that I have but with less holes.

POST THOSE PICS!
Old 02-10-2008, 01:49 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Brent. Do you have 1/8th rears on the rear and 1/8th scale fronts on the front? They are different diameterso you will be getting less drive to the front than the back and this will handle like a pig. Use 1/8th scale fronts on the front and rear.

Cheers
Old 02-10-2008, 06:59 AM
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Brent Davis
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

I went and bought a brand new Integy tire lathe to cut the tires down. In fact, the place that I got the tire lathe from races at a local track and they are the ones that gave me the tire measurements to cut down to and showed me their very own Mugen tires that were cut. I took .078 off the rears and .072 off the fronts. Just as a test as you mentioned Ziggy, I have several sets of these tires and did try another set of 1/8th fronts/rear and there was no change in the way my diff was acting/working. The car handles just fine with the large tires in the rear and the smaller ones in the front. That has not been the case this time. It was the differential slipping the ring gear. That is now fixed as I took the car out last night and it is not shaking the front tires anymore at all.
Old 02-10-2008, 10:20 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Brent what I think Ziggy is refering to is if you are not running a one way diff on a 4-wheel drive car that has smaller diameter tires on the front than the back it causes the front end to create drag on the drivetrain because the rollout for the front end is less that the rear, the front end is covering less distance than the rear.. The solution is simple just true the front and rear tires so they are the same height or get a oneway diff for the front end If you check out your typical 1/8 scale onroad car you will notice that the front tires are alot smaller in diameter than the rears they use a oneway diff to compensaite for the diff in diameter and create a overdrive ratio. I would not reccomend that you use 1/8 scale fronts on the rear with the stock gearing you have it may make your car have less traction . But looking at your pictures of your car the tires look like they are the same height anyway You can get a soild rear end for your TC-3 too.
Old 02-10-2008, 11:30 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Yes nitrohead and Ziggy, the tires are true and the same diameter front to rear. I also have three other sets of front tires that are .010", .020" and .030" smaller to see how they responded and all shook hard BUT after this rear differential was locked, all is good. I mean the rear diff was not pulling the car like it should have with the driveshaft taken out of the equation. Like I said, I held the car down and the clutch engaged hard and turned the spur gears but the rear tires didn't move. I have a old busted rear TC3 upper case that I use to see the ring/pinion gear and it was the pinion spinning the ring gear and the ring gear wasn't turning the yokes. JB welded it all and now we got HOOK!
Old 02-10-2008, 11:53 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

That's good Brent !! Here are some pictures of my motor mounts.
Old 02-10-2008, 11:54 AM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Another angle
Old 02-10-2008, 12:15 PM
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Brent Davis
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

ORIGINAL: nitrohead5300

That's good Brent !! Here are some pictures of my motor mounts.
Man now those look very good. I like the angles since it also cuts out some weight too. GREAT job nitrohead. Anything you plan to do to the chassis? I am getting into this car more and more even though it doesn't get lots of love nowadays, it is still a good car and can be made into a competitive mill. Keep the pics coming man. I like to see others' progress.

My mounts are solid end to end because I use long bolts to make sure that the motor won't vibrate loose. I do like your idea though.
Old 02-10-2008, 12:38 PM
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Default RE: Is 4 lbs. to heavy for a 1/10th scale car???

Brent I am going to put red locktite on my engine mount bolts. I don't plan on doing any lighting to the chassis because I know the chassis is going to be over powered anyway with this .28 motor. I am going to try a tuned pipe from a boat motor on my LRP .28. I think this car had alot of potential that associated did not develope. Too bad the did not design a stronger pinion, diff gear setup it should hold up for draggin but for road racing where the race last for 30 min or longer the diff is known to fail.

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