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Old 11-29-2013, 11:01 AM   #16
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For top speed, I would still go down on the pinion one tooth to 25t pinion, and then add full boost at the top end of the Rpm range.. Past 70mph things heatup fast.
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Originally Posted by kmc978 View Post
Ah ok good call on the fans. I'm just curious about the gearing...my ultimate goal is to have a higher top speed, so if I had a smaller fdr, I get more top end. But if I do that, ur saying the boost won't work as well. So my question is, is it more advantageous to go smaller pinion/higher boost or larger pinion/low boost?
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Old 11-29-2013, 11:21 AM   #17
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Wow ok. So u think my setup as is putting out 45-47mph will get that much of a jump in output running a 25t gear and full boost? If so, that's exactly what I'm looking for. And when u say full boost, is that 0 on the end bell, 60 on boost and 0 turbo?
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Old 11-29-2013, 01:37 PM   #18
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Full boost means max total boost at high rpms.... So it should be default timing on the motor + good boost(40° to 50°) at the highest rpm start point + the max possible boost with the turbo kick after holding full throttle for half a second.... If 60° boost is max possible boost, then it will be best to spread it with 10°motor + 40° boost(30000rpm to 40000rpm) + 10° turbo (40000rpm to max rpm)... Just an example.... The later you delay max possible timing in the rpm range, the cooler things will be, or so I think...
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Old 11-29-2013, 01:41 PM   #19
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Wow good explanation. Thanks Bertrand. May be a couple of weeks before i get the hotwire but I'll post my results based on what you've told me.
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Old 11-29-2013, 02:01 PM   #20
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You also have to find old setup sheets for the Rspro on huge tracks like hemsteed(Netherlands)... These guys were hitting 72mph(Hara) over there, eventhough he ran a GM esc... Good luck....
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Old 11-30-2013, 05:46 AM   #21
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Tried googling heemstede, Netherlands rs pro setup sheets and couldn't find a damn thing. Any other suggestions?
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Old 12-08-2013, 02:30 PM   #22
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Hey Bertrand, ok so I finally got a hotwire and did a setup like u suggested...default 10 degree advance on the endbell, 40 boost from roughly 30000-40000 rpm, with 10 turbo at .5 seconds with ramp at 3. Noticed no gains at all. Did I do something incorrectly? Also, should I have current limiter allowing full current? Default is off.
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Old 12-08-2013, 02:50 PM   #23
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Current limiter will not limit the top speed. Only the amount of power at start. Helps keep from spinning the tires.

I'd lower your start and end RPM's. They are way too high. I doubt you are even hitting 30,000 rpms. So it's not even kicking in I'd bet. Setting it really high to start will not make it any faster. It will add the same amount of timing whether you start it early or late. The difference is going to be how much per rpm is added. So if you add 40 degrees and start it at 10,000 rpm and end at 20,000 rpm it will add 10 degrees every 2500 rpm. If you make the start and end rpms closer together it will seem like it hits harder. Spreading them out will make it a little more gradual. You still end up with the same timing though. It just changes the feel. Also, once you hit the 20,000 rpms it continues with max timing you set. So at 25,000 rpms you would still be at 40 degrees timing.

Keep an eye on temps...
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Old 12-08-2013, 03:29 PM   #24
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What I suggested was a starting point for top speed runs that needs lots of testing... The idea is to keep lowering the start Rpm/End rpm until there is a noticeable difference in power and top speed, without too much heat...
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Old 12-08-2013, 03:34 PM   #25
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Ahh ok thanks guys. Back to the drawing board lol.
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Old 12-08-2013, 10:01 PM   #26
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For example here is Derek S. 6.5t boosted setup at Norcal Hobbies, which he claims has rip like a 3.5t: start rpm 6000, End rpm 32000, boost 50 ,turbo 15, endbell timing 12 , delay 0.5 , turbo ramp 1.0, gearing 7.0fdr , push control none, software version 212.... Maybe this is a better starting point than what I suggested before... Sorry buddy.... You can gear a little lower to make up for your faster 5.5t motor: maybe 7.3fdr....
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Old 12-08-2013, 10:33 PM   #27
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Ahhhh ok cool. Where did u find that by the way?
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Old 12-08-2013, 10:40 PM   #28
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I downloaded lots of pdf files from the tekin website a long time ago , and this file was amongst them....
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Old 12-09-2013, 05:51 AM   #29
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Cool thanks man. Just a quick question...I had read numerous tikes that it wasn't a good idea to run combined timing/boost/turbo above 60. Is that true?
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Old 12-09-2013, 06:39 AM   #30
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Yes that is true.
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