Building A Drag / Street Ve8 Buggy Need Advice !

[The Overclocker]

Originally Posted by simplechamp

You can use Jammin and Kyosho spurs with your HotBodies center diff, so you could use a 48T, 46T, or 44T. That's enough to squeeze out a bit of extra speed, and if you keep the 4.3:1 F/R diffs there still should be plenty of torque with a quality 4-pole motor on 6S.

Most options for increasing speed will reduce overall torque (higher rollout from either bigger tires or lower gear reduction, higher kv motor). The other main option is increase the voltage, but along with that come a few other things to consider.

I have a 44T Jammin spur that is too small for my gearing, like new, if you want to give it a try let me know.

thanks dude

as for the drag and speed runs ... they have to be combined !

i need this buggy to do 0-100mph very quick !

the average fast drag car real scale is going to rip me if i cant have fast start ups and be able to hit 100mph atleast , they cross the line at a average 100mph

so i need the drag & speed setup in one buggy

is it possible ?

heat ... listen 1/4 mile isint much run time , i could expect it to get hot but not worried it wont burn because a 1/4 run if im lucky i could get 10-14 second run time , then if i just want to play with it in the streets or what ever , i could set my remote control to give 80% of power when i want to play safe nothing should heat up or burn

what do u guys think ?

thanks !

[thzero]

+1 Read up on the Insane Speedruns. And look at how they run 1:1 cars on the Bonneville Salt Flats; completely different animal than the quarter mile.

Originally Posted by snellemin

You can't run the same gearing for both, as one setup is for acceleration and the other for speed.

[simplechamp]

It's definitely all about give and take. To get more acceleration you're going to sacrifice speed, and vice versa. It's that damn math and physics trying to ruin all of our fun!

[PBO]

A couple of points;

The warmer the cells, the lower the resistance. Speed runs like cells that are warm & ready to go...I warm mine before a run to get the best from the first run or two. It works well, a lot of boat guys do the same. Give them a quick peak charge as they are warming too

Weight can be your friend with speed runs also however it does increase acceleration times

Ditch the bling

Remember posts #13, 14 in this thread...your thinking will evolve & you will understand the benefit of these comments

Not sure about your RC experience but driving a buggy in a straight line at 50 is easy enough, 60 gets a little harder. 70 is the threshold speed IMO, everything past this point is a challenge...100 is probably twice as hard as 70

You will need to spend time on your throttle & braking setup also. Braking at 100 is tricky also...I use some initial drag brake (say 15%) to let it settle off throttle & then brake (say 35%) to a slow stop

[The Overclocker]

i think im going to end up buying the mmm 2650kv kit , 26t pinion 44t spur and thats it ... its gething to complicated

[DwightSchrute]

i thought doing 100mph in a 4wd buggy was pretty easy. i did it with a 43T spur and a 26-28t pinion with grp tires and a slightly modded rc8 wing. i did it in a losi 8ight with an rc-monster motor mount. that was the only mount i ever found that could handle up to a 30t pinion. this summer, i'm gonna do a run with the 30T i got. i need to see that one go. :)

batteries....

i can do it on hyperion packs all day long. their packs are really powerful, but it took alot of tries on HK packs, and i puffed several trying to get there.

power combo...

i used a 2650 with a mmm esc.


body...i used a slightly modded hard-drive nitro body.


X-treme rc magazine got a vorza to 100 pretty easily by changing the diff gear and gearing the piss out of it.

i thought driving the buggy at 100 was pie. it was very very easy imo. once you get the suspension right (my springs were very soft) it's just correct alignment and a gentle ease up to speed with your buggy sitting very low. i never did any splitter wings or anything...imo it was not necessary.

i always did my speed runs in the summer time because imo, you get a ton more traction with a hot street.

good luck, you ought to be able to get there .

[simplechamp]

Originally Posted by The Overclocker

i think im going to end up buying the mmm 2650kv kit , 26t pinion 44t spur and thats it ... its gething to complicated

If you look at it like all this stuff that needs to be done at once it will seem overwhelming. Look at it more like a process and progression. Start out with the 26T pinion and 44T spur, and see how fast it goes. Run it like that and get some practice driving it. Then a little at a time you can start modifying, upgrading, customizing. Try do make it so each thing you do gives you some type of quantifiable improvement (even just 1-2mph, or a little easier to drive). Doesn't have to be major things, maybe just a different set of springs or different wing angle. Over time you can build the ultimate speed machine. But it won't happen overnight.

[The Overclocker]

Originally Posted by simplechamp

If you look at it like all this stuff that needs to be done at once it will seem overwhelming. Look at it more like a process and progression. Start out with the 26T pinion and 44T spur, and see how fast it goes. Run it like that and get some practice driving it. Then a little at a time you can start modifying, upgrading, customizing. Try do make it so each thing you do gives you some type of quantifiable improvement (even just 1-2mph, or a little easier to drive). Doesn't have to be major things, maybe just a different set of springs or different wing angle. Over time you can build the ultimate speed machine. But it won't happen overnight.

Yeah your right , but what motor should i start with , 2650kv mmm on 6s ? I think thats the winner doesnt matter if it heats up

[The Overclocker]

but what motor is that ? the one that come with the mmm kit 2650kv is it a 1512 or a 1515 ?

[thzero]

Huh? The 2650kv CC motor is a 1512. The 1515 is a 2200kv.

Originally Posted by The Overclocker

but what motor is that ? the one that come with the mmm kit 2650kv is it a 1512 or a 1515 ?

[TexasSP]

The 2200 will be more powerful in the end and allow you more gearing options without heating up as quickly. There's more to the mix than KV alone.

[DrKnow65]

1518 (1800kv), Mamba XL, 8S 2650mah 40/50c lipos

[simplechamp]

Just a thought on the tires, I just saw these added to the IGT Hobbies website. Alpha Racing belted slicks. They are supposedly made for high-speed brushless applications and tested at up to 120mph.

http://www.igthobbies.com/product_p/alp12704.htm

In a related note, Bill at IGT Hobbies posted that he will now be carrying RC-Monster products, which is awesome!

[The Overclocker]

Originally Posted by DrKnow65

1518 (1800kv), Mamba XL, 8S 2650mah 40/50c lipos

lollll hey jeff

nah that 1518 motor doesnt fit

but the 1515 yes

im confused ... so many choices , so many kv's .... i just what to do my choice ones ...

[The Overclocker]

Originally Posted by simplechamp

Just a thought on the tires, I just saw these added to the IGT Hobbies website. Alpha Racing belted slicks. They are supposedly made for high-speed brushless applications and tested at up to 120mph.

http://www.igthobbies.com/product_p/alp12704.htm

In a related note, Bill at IGT Hobbies posted that he will now be carrying RC-Monster products, which is awesome!

nice tires but cant find anymore info , picture , diameter size

good thing its a canadian company so might be cheaper :)