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Old 01-27-2014, 05:49 AM   #61
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Up next...

Motorama motors!

If you need a 17.5 Killshot for S.C. or Buggy they are being done now

These motors are being set differently (timing and rotor) for the best performance
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Old 02-10-2014, 01:48 PM   #62
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Thumbs up Oval

Thank you Team Scream and Wayne for all the help getting me up to speed in 1/10th oval 17.5 Super Trucks. The support and advice everytime has been right on. Thanks Daryl
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Old 02-27-2014, 06:29 AM   #63
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Thank you Team Scream and Wayne for all the help getting me up to speed in 1/10th oval 17.5 Super Trucks. The support and advice everytime has been right on. Thanks Daryl
Glad things are working out!
Maybe I'll see you at the TOUR Nats
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Old 02-27-2014, 07:19 AM   #64
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Great results at Motorama!

2wd 17.5 buggy:
4 in the "A" main, also hot lap of the main

17.5 truck:
2 in the "A" main

2wd 17.5 S.C.:
3 in the "A" main


All of the motors were Killshot based Team Scream 17.5's with different timing/rotors for each class
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Old 03-06-2014, 01:43 PM   #65
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Default New for 2014....

I just received pics of the new Team Scream 17.5 motor that has been sent in for ROAR approval...


Team Scream Racing!!!!-img_1242.jpg


There will be 12.3 and 12.5 rotors
Stator numbers in the 21's
Quality bearings, no need to swap out
Gold plated solder lugs
High temp solder
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Old 03-06-2014, 02:36 PM   #66
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Another pic:

Team Scream Racing!!!!-img_1229.jpg
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Old 03-06-2014, 02:54 PM   #67
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I like it
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Old 03-06-2014, 05:19 PM   #68
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I like it
I'm working on yours
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Old 03-07-2014, 09:47 AM   #69
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I'm working on yours
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Old 03-07-2014, 09:55 AM   #70
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It looks good
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Old 03-10-2014, 06:39 AM   #71
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Default Results from the new TSR 17.5

Pete Bartlet ran over the weekend at R/C Excitement in the S.C. Pro 2wd stock 17.5 class.

He posted TQ by 7 seconds and hot lap by .46 seconds in Qualifing.

Pete qualified with:
16 5:10.259
18.545 hot lap
18.933 top 10

In the main:
22 7:11.325 (only 22 lap run, won by 1 full lap)
18.612 hot lap
18.941 top ten
and a 18.670 on lap 21 (no fade there!)

His set up was the new TSR17.5 with the 12.5mm rotor and 45* of endbell timing!!

Great job Pete!
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Old 03-16-2014, 08:01 AM   #72
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This motor is fast...
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Old 03-16-2014, 04:22 PM   #73
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Originally Posted by JamesL_71 View Post
This motor is fast...
Tell us more

What did you run it in, how did it compaire to other 17.5?
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Old 03-17-2014, 09:39 AM   #74
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Elaborating a bit on my previous post...

I ran 17.5 12th this past Saturday... I was just testing, not actually racing. Wayne had sent me the new Team Scream motor and a couple rotors to do some testing with prior to its ROAR approval. Just trying to get some data points here, so that when the motor starts being sold/distributed to a larger population, we can recommend a starting point for gearing/timing. Anyway... I had heard very good things about the motor from Wayne, so I was interested in testing it out myself.

One of my local tracks is RSD Speedway in Houston... The layout @ RSD has been down since the first week in December. It's an awesome layout... very fast, open in some spots, tight in others. And since the layout has been down for a while, the grip has come up pretty high for a non-subfloor club track. It was a perfect opportunity to do some testing, since the lap times are well established by now... I have run 17.5 12th a number of times on this layout, and I know right where I should be. Of the handful of times, I have turned a hot-lap of mid 9.6s on two separate occasions... low 9.7s on the other weekends.

I started off the day with my D3.5 in the car. I have found 2 different rollout/timing configs that work very well at this track/layout. I tried both of them, 2 packs each. I was able to get down to a 9.62s hot-lap... so far so good.

Next came the Team Scream motor. I haven't dyno-ed the motor yet (although I plan to this evening), but according to Wayne it makes some downright silly high RPM #s across the board, when the timing is 45deg or higher. He suggested using the smallest rotor(12.3mm with a ~1350G measurement on the gauss meter...) and gearing very low with the timing cranked. I started at 81mm with the timing @ 45deg. I also tried 50deg and 53deg with the same rollout... It just wasn't the ticket for me. I managed to get down to a 9.72s lap, but it was obvious the motor was lacking speed compared to earlier in the day. I went up 2 teeth, but quickly realized that was the wrong direction. Even with the 81mm rollout, the car was overgeared for the timing I was running. It is certainly feasible that the high timing setup could work, but it will definitely require more testing to find the right rotor and gear.

So I brainstormed for a bit and decided to go the opposite direction. I bumped the timing down and threw more gear @ the motor. I tried a couple different rollout/timing configs... And in the end, I settled at ~106.5mm @ 35deg with the 12.3mm/1350G rotor. This yielded a hot lap of 9.48s.... not too shabby. I pulled the car off the track @ the 6min 30sec mark... it was still doing low 9.8s and temped @ ~115F. I felt like I had a much better feel for the motor @ that point, so it was time to try the big gun rotor. Wayne sent me a variety of rotors to try out and the strongest one was 12.5mm and showed a ~1550G reading. I bolted in the fat rotor @ the same rollout/timing. The car was quite quick up front... turned a 9.50s fast lap and lots of slower 9.5s. However, by the 4min mark I could tell the car was fading pretty hard. And by 6mins it was doing 9.9s and 10.0s. I went back out with timing bumped down to 30deg. There were lots of cars on the track @ this point, so it was hard to judge exactly how fast it was... but I only saw two 9.5s and the fade didn't seem to improve.

I think the key to getting the big rotor to work well will be LOTS of gear and very little timing... When I test this rotor again, I will start @ 112mm with 20-25deg, depending on how things look on the dyno. I also have a 12.5mm rotor with a more reasonable magnet, measuring ~1400-1425G. I think this rotor could work quite well @ the 106mm setting.

This post is long-winded enough as it is... so I will end it by saying that this motor impressed me. Both on the bench and on the track. Anyone who is looking for a starting point for 17.5 12th, I would highly recommend 106-107mm with 35deg and the 12.3mm rotor. I will get a free-rev amp draw # on my motor w/ the rotor/timing set where I found it worked best... and update this post later.
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Old 03-17-2014, 12:25 PM   #75
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Thanks for the info!

Looks like 35* with a 106mm rollout with the 1300's rotor worked the best so far!

Let us know how the other testing goes for you.
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