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Old 09-18-2009, 08:28 AM   #331
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pan cars we always talk roll out. the difference is that some use metric and some use standard. the 3.04 is in inches
To my rescue... again.

In that case thats just over 77mm.
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Old 09-18-2009, 08:30 AM   #332
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that's for a 13.5 though right ?

how much would you drop that for 10.5 ?

just after a ballpark figure here, will adjust on the track
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Old 09-18-2009, 08:37 AM   #333
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To my rescue... again.

In that case thats just over 77mm.
yeah, I think that is right. just multiply by 25.4

if it helps kenny has his complete car setup in the rev5 thread.

http://www.rctech.net/forum/6343610-post476.html

also his wgt car. when you come to texas. that setup will be way pushy. out track does not have the tracktion. that iic. we will get you going. just give me a call
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Old 09-18-2009, 08:42 AM   #334
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that's for a 13.5 though right ?

how much would you drop that for 10.5 ?

just after a ballpark figure here, will adjust on the track
You'd want to drop it down to the mid 60s and temp it. The motor settings, timing boost and turbo should be good for starters too.
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Old 09-18-2009, 08:46 AM   #335
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thanks, I'll give it a go this evening
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Old 09-18-2009, 09:04 AM   #336
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Originally Posted by theisgroup View Post
yeah, I think that is right. just multiply by 25.4

if it helps kenny has his complete car setup in the rev5 thread.

http://www.rctech.net/forum/6343610-post476.html

also his wgt car. when you come to texas. that setup will be way pushy. out track does not have the tracktion. that iic. we will get you going. just give me a call
he ran a rollout of 94.78 with a 17.5? Is my math wrong?
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Old 09-18-2009, 09:07 AM   #337
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Quote:
Originally Posted by theisgroup View Post
yeah, I think that is right. just multiply by 25.4

if it helps kenny has his complete car setup in the rev5 thread.

http://www.rctech.net/forum/6343610-post476.html

also his wgt car. when you come to texas. that setup will be way pushy. out track does not have the tracktion. that iic. we will get you going. just give me a call
I raced the WGT last night at 63mm (because that's what was in it) with my 13.5 1S setup against a 12th scale running a 10.5 and won with consistency. He was .5 a lap faster, but had handling issues. I ran 3 zero marshal races. I need to wake up from my dream now.... I think there was enough room temp and torque wise to take it to the low 70s and test again for our little track.
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Old 09-18-2009, 09:19 AM   #338
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he ran a rollout of 94.78 with a 17.5? Is my math wrong?
(1.63 * 3.14)/(71/50) = 3.60 Inches

91.44mm, so yeah you're math isn't bad. He's over a half inch longer in rollout than the 13.5 guys. Probably wanted a better top end.
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Old 09-18-2009, 09:49 AM   #339
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What are some good rx packs people are running. Would prefer lipo. Thanks!
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Old 09-18-2009, 09:55 AM   #340
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What are some good rx packs people are running. Would prefer lipo. Thanks!
I like the TQ booster so far. It has its own power switch and works well with V200 firmware.
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Old 09-18-2009, 11:25 AM   #341
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The RX pack isn't going to back feed and give the motor more power.

I feel it's faster only because it will prevent ANY power from being taken away from the motor. If you run a booster there is a small amount of power being used for the receiver and servo, while minor it's a difference especially in mod where they're pushing it as it is.

If I had the choice I'd go rx pack simply to keep my servo and receiver at a higher voltage for optimal performance.
Here is from RedRC.net

New from Edge of Power are these stealth smart power packs that come complete with electronic unit, LiPo battery, on/off switch with LED (green, yellow, red) lights to give status of battery, plus the switch also doubles as a charging connector for very easy access. Smart Power Packs are single electronic components and claim to be smaller, lighter (50 to 75%), and more powerful with longer worry free run times than any other receiver battery pack available to racers today.
Source: Edge of Power
www.edgeofembedded.com

and from SMC
450mAh 7.4v 20c Lipo Battery Receiver Pack.(Black box)
Now you can put a self-contained lipo receiver battery pack in your 1S Lipo 1/10 or 1/12 pan car to power your radio system easily and affordably. This small, lightweight unit mounts easily and is protected by a hard shell case. Separate charge lead means you don't have to unplug it every time you need to charge it. Built in switch for easy wiring.
Voltage output: 7.4v nominal (requires voltage reducer for most installations)
Size: 43 x 28 x 20mm
Weight: 32 grams
Attached Thumbnails
Tekin RS/RS PRO on 1s Lipo Q&A-eopsmartpp-400x346.jpg   Tekin RS/RS PRO on 1s Lipo Q&A-smc450rcp.jpg  
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Old 09-18-2009, 11:37 AM   #342
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The problem will be mounting. Most tracks insist on lipo sack charging. It would have to come out of the car and go in the sack, or the whole car has to go into a large sack. An you need 2 chargers for the car, not just one. If you have an hour or more between rounds to charge both full at 1C, you're lucky.
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Old 09-18-2009, 11:52 AM   #343
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Guys, that setup I posted a few pages back is Kenny's 17.5 setup, not 13.5(sorry).

I do agree that in spec classes the booster is far easier to deal with and ultimately should not affect the power to the motor since you're not using the packs capacity.

However in mod, I can tell you that EVERYONE was pushing it. Running a booster most certainly caused enough draw to not make it and I know a few changed over to an RX pack.

Mike and Donny both were using the SMC 50c packs at the race and neither had run time issues. WE could have made their cars much faster than they were already going but deemed the run time to be to close to the limite.

Mike ran a setup in practice that had him pulling wheelies in the chicane at one point! However this setup was using more mah's per minute than I cared for...This however is what 1/12 mod was all about just 5 years ago. You had to choose the right motor, gearing, and setup for your car to make 8 minutes. Even then a good driver could race "reserved" to conserve battery power for later in the run...
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Old 09-18-2009, 12:02 PM   #344
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You say it so much better Randy.
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Old 09-18-2009, 12:56 PM   #345
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OK, I have another dumg question. If someone were to run a receiver pack instead of the booster, wouldn't it either feed back into speedo, or cause bad things to happen to either one or all items (speedo, receiver, and pack)?

Last edited by MUDVAYNE; 09-18-2009 at 01:06 PM.
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