***__ The 1/8 Onroad Think-tank __*** - Page 5 - RC-Monster Forums

Ryu James · 11.13.2008, 09:21 AM

So Countryhick,
i just finished my 3speed Schumacher and took it out for a test run. Not bad. it brought a grin to my face. i wore out a brand new set of tires on one battery. not the speeds i was hoping for but it still is a 70mph (120kph) car. right now it is in raw form and kinda ugly. now that i got it running and like the setup i am going to clean it up real nice. like yours. your ride is looking great. its come along way from a few months back. i will post some pics later today.

Ryu James · 11.14.2008, 10:01 PM

so here is my schumacher 3 speed i finished. i put the gps on it and it did 74mph. not bad. not the 100mph i was hoping for but just a gearing issue. but this is plenty fast and drivable. but it has no grip. it slides all over and went thru a pair of tires after 2 batteries. i ordered some foams. we'll see how they do. now i am finishing the RC8T and then its on to my 1/5 scale on road. been slowly starting on that one.
the schumacher is kinda ugly right now. just wanted to get it done to see how it ran. now i am going to clean it up with tons of carbon fiber, titanium, and aluminum. i will post more pics later.

Romster · 11.16.2008, 10:13 AM

Countryhick nice video. It's awesome I am looking to convert one also.

mabu · 01.22.2009, 05:17 AM

Nice Video :)

i converted a 950 to brushless using 6s1p fepo packs and a no name 1800kv motor.
because i am a lazy guy i used the conversion kit ... i tried to use the teknorc clutch adapter, but i won't fit :( so i have only 1gear ...

but at the moment i am still working on a battery

01.22.2009, 04:49 PM

Quote:

Originally Posted by mabu

Nice Video :)

i converted a 950 to brushless using 6s1p fepo packs and a no name 1800kv motor.
because i am a lazy guy i used the conversion kit ... i tried to use the teknorc clutch adapter, but i won't fit :( so i have only 1gear ...

but at the moment i am still working on a battery

Got any pics??

I just finished making some modifications to a new body shell. It's now off to be painted. I will post up some new pics when it's done.

mabu · 01.23.2009, 02:00 PM

Unfortunaly this conersion replaces the 2 gear setup. I think it would be possible to restore the original setup, but then i would have to use a servo to brake ;)

strodedawg · 01.24.2009, 11:27 PM

does anyone make a conversion? if so where do i get it?

strodedawg · 01.26.2009, 09:53 AM

does this motor mount fit anyother chassis in the serpent line? how about the mugens?
thanks

mabu · 01.26.2009, 10:03 AM

well, it fits in 950 and 960 ... because its developed for serpent, i guess it only fits serpent line - and which chassis i do not know ..may be you get some information at speedpassion.

strodedawg · 01.26.2009, 11:01 AM

i can get a 950r cheap, that is why i asked sweet! for my 1/8 offroads i try to keep the rpm between 35-37k max. for onroad, since there is no jumps and usually level ground can we up the rpms to around 40k? i would like to run an 8s pack and a 1300 kv motor, what capacity are we looking at 3000? or do i need more?
thanks

mabu · 01.26.2009, 12:05 PM

i am running a 1515 3d on 6 to 10s Fepo in a 1:8 Xray Buggy and get peaks on maximal 50 amps ( i am using a jazz 55-10-32 ).

so i think you can expect similar ampere here. i did not run my conversion until now because i have to replace the steering arm first

samwong · 10:26 PM

The only problem now remained is the motor selection....

tested that 19T P / 45T S gives 96deg cel. of motor, ESC is around 45Deg. cel.

Motor is 2350kv with 4S Lipo .... rotor broke ...

Thinking if it help....to use 2100kv motor to lower down motor temperature to around 70deg cel., anyone can give me a hand.....

02.16.2009, 04:38 PM

Looks great!!! I think you might want a better quality motor. Maybe try a NEU??
Well done!!

Cheers Andrew

samwong · 02.16.2009, 08:28 PM

Quote:

Originally Posted by Countryhick

Looks great!!! I think you might want a better quality motor. Maybe try a NEU??
Well done!!

Cheers Andrew

Thanks .. Andrew..

yes exactly ... I really need a serious motor... but in Hong Kong, it is hardly to find....finally yesteraday I got Losi Xcelorin 2100kv for my second trial.

And I will still keep the gear 19T p / 45T s and see how will the temperature of motor be...

May I know your motor spec (kv) and temperature after a continuous run? and how you compare 2gears system vs single gear system in 960 brushless conversion...in terms of motor temperature, acceleration and run time? as I still unsure if it need 2gears system for brushless... to achieve a comparable speed with other Gas Power 960. But seems now just use 2nd gear gives motor too much loading and temperature...( at least with cheap motor, hope Losi 2100kv works better)

02.17.2009, 04:42 PM

Quote:

Originally Posted by samwong

Thanks .. Andrew..

yes exactly ... I really need a serious motor... but in Hong Kong, it is hardly to find....finally yesteraday I got Losi Xcelorin 2100kv for my second trial.

And I will still keep the gear 19T p / 45T s and see how will the temperature of motor be...

May I know your motor spec (kv) and temperature after a continuous run? and how you compare 2gears system vs single gear system in 960 brushless conversion...in terms of motor temperature, acceleration and run time? as I still unsure if it need 2gears system for brushless... to achieve a comparable speed with other Gas Power 960. But seems now just use 2nd gear gives motor too much loading and temperature...( at least with cheap motor, hope Losi 2100kv works better)

I'm using a NEU 1512 2050Kv. (but I run 6s LiPo) I think your motor KV will be a little low to achieve the same speed as a gas 1/8th, unless you can drastically gear up, which will possibly add to your overheating issues.

Because I use a large aluminum motor mount, the chassis of the car dissipates a lot of heat (this is how the gas motors also dissipate their heat) running temps are around 70deg C. (30deg ambient) This reading is after continuous running on the racetrack for 10 Mins. I see you have a CF motor mount and this could partly be some of your problem.

After running the car with a 2 speed, I don't feel that there are really any benefits. If there was a larger ratio change between first and second then there maybe an advantage.

Because I haven't tested with a single speed I can't definitively state if the run time is better or worse. I do however think there wouldn't be much difference.

Keep us posted!! It's great to see these 1/8 onroad cars popping up

Cheers Andrew