R/C Tech Forums - The Speed Passion Thread

I have a newb motor question I hope some one here can help me with. I am running a stock class with a 17.5 MMM motor at only 4.8 FDR. At the first 3 min of the race the car runs great. But the power starts to fade after the 3 min mark. It's not going extremely slow or anything like that. It's just lost the "bursty" feeling that it had at the start of the race.

I checked the temperature after the race it was around 140F. So I don't think it's overheating. I am using a 25c lipo battery and a tekin RS. both seems to be running at normal temperature.

I am not sure what is causing the loss of speed. And I can't begin to fix the problem without knowing what the problem is. I am not even sure if it is a motor issue. I am just trying my luck here on the SP forum. Anyone here has experienced similar situation?

Any advise would be greatly appreciated.

Speed Power (same as Speed Passion) sells lipo, 6200mah, 65c for less then $60....I think it is time for the upgrade and get rid of those unknown problem.

Your lipo is way too low in mah and also low in C rating...you can buy something alot nicer for the same price you paid 2-3 years ago. Or even less...

gom	10-14-2011 08:51 AM

Quote:

Originally Posted by Solara (Post 9781389)

Thanks Solara. Looks like it's time to buy some new batteries.:)

Mb3195

10-15-2011 02:15 PM

Hi guys, any setup suggestions for a HPI pro flux 10.5t motor with the 323 software?

Running indoors on carpet around 30m x 20m track

Cheers

Mb3195

10-15-2011 02:46 PM

what's the difference between the sp 323 and hw 211 firmware? is there any?

mattwoodcraft

10-16-2011 07:50 PM

i have a question regarding 17.5 turn motors, yesterday i was tuning and getting my setting correct the motor was temping around 65 degrees it has plenty of punch and mid speed but seems to lack just a little on the top end not by much but in boosted racing the LRP motors seem to be faster.

i am running the 323 software 0 degrees on the motor
45 boost and 20 turbo punch set at 7

its fast of the line and through the mid feild but lacking the top end just a small amount but noticable.

is it possable that the LRP motors rev just a little harder ? i love the speed passion but with the nationals coming up in 6 weeks i want to be on the pace

thanks any advice

transplantlife

10-16-2011 08:05 PM

Quote:

Originally Posted by Solara (Post 9781389)

Solara i won the 5800 lipo you donated to the track. Thank's again for all your support!

Deepsouth

10-17-2011 04:29 AM

Quote:

Originally Posted by mattwoodcraft (Post 9790593)

drop a tooth on spur or pinion? give you a tad bit more top end?

mattwoodcraft

10-17-2011 05:24 AM

done that still didnt help i will try a few more things next time i venture out on the track

jrxs-r

10-17-2011 05:58 AM

Matt,

Try a little more turbo. 1 degree at a time. What is your turbo ramp rate? Temps will be safe up to about 78-80C.

Pattojnr

10-17-2011 06:05 AM

Quote:

Originally Posted by jrxs-r (Post 9791912)

Matt,

Try a little more turbo. 1 degree at a time. What is your turbo ramp rate? Temps will be safe up to about 78-80C.

he is maxed out Zacha. 62 or 64 deg is Maxx. anythign past that point it will not add. so what ever he uses up first wether it be turbo, then it will add the rest of the boost to a max of 62 or 64 deg, not 100% sure on that number.

Manfredo

10-17-2011 06:39 AM

I'm looking for a good 12th scale setup using an GT EX2.1 ESC and a V3.0 1cell 3.5t Motor. Which timing-insert, software, settings would you recommend?

It seems like boost is required nowadays in 1/12th (?) Do you guys run Stock-software with mod motors in order to do that?

SRW141

10-17-2011 07:51 AM

Quote:

Originally Posted by mattwoodcraft (Post 9790593)

Try adding some motor timing. I always have more power when the SP motor's are set on 10 degrees instead of 0 or 5.

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