Semi Pro's Carbon 8ight

[Semi Pro]

this has been a long and expensive project but we are finaling getting to the light at the end of the tunnel

i know you guys didnt come here to read, so here's some highend buggy porn

[BL_RV0]

Purrrrty. Love the wheels. I think a custom sized RCM tray would top it off nicely.

[Semi Pro]

Originally Posted by BL_RV0

Purrrrty. Love the wheels. I think a custom sized RCM tray would top it off nicely.

im planning on changing to mikes mount and i may have him make me a tray,or i may just make one myself

[himalaya]

How much weight have you saved from this 7075--> carbon fiber conversion ?

[Semi Pro]

Originally Posted by himalaya

How much weight have you saved from this 7075--> carbon fiber conversion ?

http://www.rc-monster.com/forum/showthread.php?t=18773


the matrix chassis is 216grams, stock chassis is 314grams
the matrix front shock tower weighs in at 12grams stock is 24grams
the matrix rear shock tower weighs in at 20grams stock is 38 grams
the matrix steering ackermen Weighs in at 20 grams, stock is 38 grams

so over all its 147grams lighter just from the carbon conversion

when you add in the titanium turnbuckles,hinge pins, king pins, cermaic bearings and other lite weight parts it all starts to add up........er i mean down.........wait...........you know what i mean

im not sure what the final weight will be but right now with the body on and the wires tossed it its 6.5lbs rtr

[kvrc]

you say the car ready to run is about 6.5lbs? i have weighed many losi 8 b cars all with 4s 5000 lipos and all are no frill race ready cars.
the lightest one i weighed was at 7.9 lbs and that was with the losi conversion, the lighter mamba max esc and a 60mm medusa motor. the other 5 or so i have weighed were about 8.1.
you list the carbon parts reduce it by 147gms or a little over 5oz. where in the world are you reducing another 17oz from?
i understand that tires and rims and some other parts can make a little difference, but the cars i weighed were running micro pin indoor type tires so they were on the lighter side.
so from my experience, the cars i have weighed with your listed carbon parts substituted would still weigh about 7.6 lbs rtr. to make them about 6.5lbs they would need to be weighed without the 500 gm battery.
please enlighten me as to how you come up with those numbers.

[Semi Pro]

Originally Posted by kvrc

you say the car ready to run is about 6.5lbs? i have weighed many losi 8 b cars all with 4s 5000 lipos and all are no frill race ready cars.
the lightest one i weighed was at 7.9 lbs and that was with the losi conversion, the lighter mamba max esc and a 60mm medusa motor. the other 5 or so i have weighed were about 8.1.
you list the carbon parts reduce it by 147gms or a little over 5oz. where in the world are you reducing another 17oz from?
i understand that tires and rims and some other parts can make a little difference, but the cars i weighed were running micro pin indoor type tires so they were on the lighter side.
so from my experience, the cars i have weighed with your listed carbon parts substituted would still weigh about 7.6 lbs rtr. to make them about 6.5lbs they would need to be weighed without the 500 gm battery.
please enlighten me as to how you come up with those numbers.

wow you sound like a hater

but i will be nice and help you out alittle

i am only useing a 380gram pack 35c 6cell pack

12gauge wire, no motor bullets

the esc is lighter and fanless too

my caseless spektrum 3500 mini recever is only heat shrinked to save weight

kyosho spurs are alot lighter than stock, the pinion is aluminum not hardened steal

hotbodies aluminum suspension balls

factor in the titanium parts ie shock mounts,hinge pinsking pins,turnbuckles axel pins,hub pins,screws, (im not sure what the weight diffrence is)

Fioroni lightweight diff outputs,hex hubs,axels, and rear flexer all are alot lighter than stock.

requard tuneing foam is 1/4 the weight of proline molded foams

ceramic bearings are lighter than stock

losi light weight diff out drives

no external antena or switches all wires are shortened (every little bit adds up)

the stock wing is one of the lightest on the market, so is the stock body

the list goes on and on, i came up with the weights of the parts just like i got the weight of the buggy, i put it on my digital scale, i didnt weigh everything because im impatient and want to get it done

the best part is there is still alittle more i can do to save weight, just depends on how much i want to spend

[js058515]

Now I see why you said it cost a lot! There are a lot of hidden to the eye goodies you have. Your crazy bro! That thing belongs in a RC museum or on my desk at work.

[nitrostarter]

I was just thinking the same thing. My Tekno 8B weighed in at 7lb 14oz with a 4s FP 5000 pack. I would love to cut the weight down to 6.5lbs or even 7lb even. Please enlighten me.

[SpEEdyBL]

My 8ight now weighs about 7.25lb with a 4s 4100 mah pack and stock tires/wheels.

A few tips:
Kyosho plastic vs. Steel spur: 20g less
Removed front chassis brace (non-flex tuned chassis only): 14g less
Did not use motor brace, diff bulk spacer in losi conversion: 17g less
(Dremeled chassis for spur clearence instead)
Got some fioroni drive axles from a-main hobbies: 20g less
Got a the lunsford titanium hinge pin/turbuckles kit: 36g less
Total: 107g of weight loss which is almost 1/4 lbs, but you can save even more just by getting the right tires, wheels, foam, battery, and shortening your wires,

[kvrc]

speedy....you are using a 4100 pack and that will save about 3oz. over what most 4s guys use to race with.
are you weighing your car with those onroad tires in your signature pic? you always have to pick your tires/inserts based on what works where you race. how much did you spend on those fancy hinge pins and axles?
like i said, i have weighed about 6 losi 8b cars and all are race ready no bs cars. true none of them have ti hinge pins or super expensive lightened axles but still they weigh close to a pound more than some of the reports i get from a few other guys.
and yes i have compared my digital fish scale to my local post offices scales more than a few times and it is within 10gms.

[SpEEdyBL]

Originally Posted by kvrc

speedy....you are using a 4100 pack and that will save about 3oz. over what most 4s guys use to race with.
are you weighing your car with those onroad tires in your signature pic? you always have to pick your tires/inserts based on what works where you race. how much did you spend on those fancy hinge pins and axles?
like i said, i have weighed about 6 losi 8b cars and all are race ready no bs cars. true none of them have ti hinge pins or super expensive lightened axles but still they weigh close to a pound more than some of the reports i get from a few other guys.
and yes i have compared my digital fish scale to my local post offices scales more than a few times and it is within 10gms.

7.25lb with the stock losi wheels and pins which are 450grams total. With the tires picture, my car would be even lighter. My scale is precise to within .05 grams, but anyway you got me. I am also using modified L8ight shock towers with front shocks in the rear, which seem to benefit on anything except huge jumps, due to the slight decrease in suspension travel (it's not as much as you would think however and decreases body role quite a bit eliminating the need for sway bars). That saves another 35g plus 14 or 28g grams for the lack of sway bars (i forgot which). All the plastic that I have cut to lower the battery tray, increase air to the motor, improve the look of the rear wing must subtract about 10g as well.

You see, I've done almost everything in the book to decrease weight except for switching to carbon fiber. There are a lot of little things that I didn't mention, but they all add up.

The fioroni drive axles are $57 at amain, almost twice as much as the stock ones and the titinium turnbuckles and hingepins were $78. I've had my 8ight for almost two years, so as you can see, upgrades and mods have accumulated.

And btw, wheel/tire sets can vary by 1/2 of a lb. Choose wisely. Associated makes 83mm wheels that are advertized and are actually 33g per wheel, and panther slicks are some of the lightest tires you can buy at 46g each. Lighted outdrives will save you a dismal 0.9grams a set. They should be the last thing you consider upgrading.

[saucisse]

Very nice indeed!!! Do you have any pics from under the frame?

[himalaya]

6.5lb rtr is very attractively light. My 8ight-E 2.0 weights 3355g with a 2.6Ah6S pack and MMM combo.

[bdebde]

If you race anyplace with rules, 6.5lbs will be too light!