Electric 1/8th Scale conversion kits.

[Dirt-Racer]

Originally Posted by DJ1978

If you are talking Lipo's you only need one battery. Let it cool and charge it again and again and again.......

Thx for the tip Dan, though i find it hard to believe you only need 1 pack? , what if that gets damaged during raceday? dont you guys have a backup pack?

[DJ1978]

Originally Posted by Dirt-Racer

Thx for the tip Dan, though i find it hard to believe you only need 1 pack? , what if that gets damaged during raceday? dont you guys have a backup pack?

Good point... I actually do not have back up lipo's for the EH7. I would need to switch to Nimh 4400's

[Paul_67]

It would also be good to have extra batteries if you bump up.

[badassrevo]

Make the A the first time around! LOL

[party_wagon]

What looks to be the best bargain pack to me is pick up two 36volt dewalt packs and use the 12 a123 cells from those to make three 13.2 volt 4600 mah packs. This way you will always have one pack fully charged, you can wire two in parallel to get that big run time, 9600 mah, and then if you get bumped you only have to charge a 4600 mah pack which can be done in like 25 minutes w/ the right charger. If you are on a tight budget and can find a way to properly gear a mamba system then the cheapest way to go would be this. pick up one dewalt pack, build a 4p 3s pack, 9200 mah 8 volt nominal pack, they peak at 9.9 volts. Then wire it up to a 7700 mamba, they will put out around a kw of power which is enough to push these buggies like a high end nitro engine. So, basicly you can pick up a hypersonic charger, dewalt pack, mamba system, and a power supply & walk out spending under $450 on your motor,esc,batts,powersupply, and charger. Not to mention you can charge it all up in under an hour from being completely dead and then go and run for 30+ minutes. This would probly be the most idealistic way to go for an e-maxx and such.

[pink_sleeve]

does this one work? http://www.rc-monster.com/proddetail...515_1yF&cat=20 what the big differences in all of them?

[motomanpat]

I really hate trying to find a pit guy at the races and that makes me so interested in this type of electric setup.Maybe after I get some more time with my Hyper 8 and it starts getting old I will go this route.What would it cost me for a full blown out system ?

[kvrc]

all of the electric 1/8 racing we have done so far in sw michigan has been against only other electrics so the bump thing isnt an issue. honestly if /when this really takes off i dont want the bump rule anyway.
sure it can save a bad day of qualifing but because of the need for extra batteries and possibly having to cool down your electronics quickly to make back to back runs i am against it.
i also dont want the mains to ever be so long that you have to make a battery swap. that just makes it a pitman issue and makes it harder to get the program together. i think that having 20 min. max mains for now is very realistic for anyone with 8000 mah batteries. if in the future batteries get even better and once people get more time doing this then the max. main time could go up a little but not if it involves a batt. swap.

[badassrevo]

I have started to assemble my car. I will post updstes later this week. Hopefully the rest of my parts show up before Sat. I can't wait to run it.

[party_wagon]

The battery capacity is limitless. You can run a 16k mah pack if you want to. The reason the 8k mah packs come to mind is because the people who have realy sparked interest in this class are the people running the 20 minute li//bl 1/10th scale trucks. Personally I think 20 minute mains are the best way to go because it doesn't require tons of cash to be able to really run for 20 minutes. If you browse back to page two or three I covered what a full blown setup would consist of. You could also choose to run the a123 cells if you desire to as well instead of lipos. Either cells will both perform great.

[glassdoctor]

8000mah packs can run a lot longer than 20 minutes!!! More like 40 minutes...

I have a 12000mah pack in my truggy that can do 45 easily and probably close to an hour depending on driving style etc.

I can almost make a 30 min race with a 5000mah pack on an indoor track.

[badassrevo]

I really hope to be able to get 30 min out of mine. I will set the cutoff on the Mamba and check it out. I will need 30 min to run with the gas guys. We run 30 min A mains at our outdoor track. Here is a link with some track pics.
www.medinarcraceway.com

[kvrc]

yes i have a pair of 8000 maxamps and i can go 30 minutes +. i am just saying that for now, until it really catches on i think 20 minutes is a great place to start. that gives the nitro guys who convert a fairly long main and dosent upset the electric guys that might have to marshall them.

glassdoctor....are you running a 4s or 5s system? i run a 4s system and i know i couldnt come close to 30 minutes using only 5000mah. if it were 5s then that makes a little more sense. from the limited on track racing i have done so far i am pulling approx. 265 mah per min. in a 20 minute race that would mean i used approx. 5300 mah.
if it dosent rain this saturday, myself along with a few others who post here should be able to get some good feedback about runtimes in race conditions.

[badassrevo]

Do you guys run connectors on you motor or do you hard wire it? If you use connectors what size are the male ends that match up to the mamba?

I just got my motor today and there are no connectors on it. the directions for both the motor and speedo tell you not to cut the wires.

Let me know how it is done or what size the conectors on the Mamba are.

Thanks,
Doug

[glassdoctor]

My 8ight setup was running in the ballpark of 180mah per minute racing indoors. No kidding...

I have also had more thirsty setups also... well over 200mah per minute. My CRT I think was in the 250-270 range last summer... but I didn't really track it. It may have been a little better than that.

Usually I just run things and don't take notes..... but I should more often so I would have good data