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Some ideas/brainstorming for a 1/7 scale on road car build
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lincpimp
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Some ideas/brainstorming for a 1/7 scale on road car build - 12.06.2010, 11:49 PM

Was cleaning up and found my Hot Bodies Lightning Street and decided it was time to make something out of it. Maybe use it to jump start my rc interests again??

Anyways, the LS (lightning street) is basically a HB buggy with a longer chassis. It has a 2 speed center spur with 46/42 gears. Single mech brake setup and regular buggy 43/13 diffs. Uses 1/8 buggy wheels with 17mm hexes.

Looking at my motor inventory I have a few options. A 2200kv flux motor, 1521 1y neu, 1717 cc motor, 1521 2y and 1521 2.5y.

I do have the RCM 2 speed adapter and a few losi and rcm pinion gears to use with it, 26/30 would mesh with the center gears and be the highest gearing I can swing with off the shelf gears. 16/20 would be the lowest gearing.

Would use a MMM and a turnigy 5k 6s 40c lipo. I have those at hand.

With the 2200 and max gearing I get 104 in 1st gear and 131 in 2nd. Might be overgeared for that motor. Lowest gearing gets me 64 in 1st and 87 in 2nd. Do we think the 2200kv flux motor will pull this gearing? I know the 1515 sized motor is quite potent and this car will not be much heavier than a truggy with alot less wheel/tire weight...

I like the 2200 flux motor as it can be easily adapted to this chassis by attaching it to a flat plate and then threading that plate to accept the nitro motor screws. The other motors would require some sort of L bracket or maybe get mike to make me a center diff bulkhead to fit?

I could go to the 1521 1y and gear up and get similar speeds with moroe motor power. Unless I can find a suitable esc the 1521 2 and 2.5y are out. TThe 1717 could be used, but I have it earmarked for the 6x6 lst...


1521 1y with mn and max gearing on 6s:

min gearing: 46 1st, 63 2nd
max gearing: 75 1st, 95 2nd

The more powerful 1717 would be about the same, as it has a similar kv, and would likely pull the max gearing in 2nd, as long as the MMM can handle the load. Pretty sure that 40c turnigy can swing it, if not I can make a 6s2p 6400 pack that will.

Thoughts???? Insults???
   
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