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Old 07-15-2013, 08:45 AM   #226
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I'm going to be trying my Apex2 HT/HT setup this weekend. Going to start with my TRF417v5 at 92/46, which puts me at 3.88FDR. Was previously running 100/46 with my RPM/HT combo. It was good in the infield but I was getting caught fast on any section that required a full trigger. For now that motor will go in the box and will get the 12.5 BP rotor I have for open asphalt tracks most likely.

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Yikes, I missed that memo!! so on the ION motors 0=30* this explains alot
All D3.5 based motors have 30 built into the can. Will make a huge difference.
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Old 07-15-2013, 09:51 AM   #227
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I'm going to be trying my Apex2 HT/HT setup this weekend. Going to start with my TRF417v5 at 92/46, which puts me at 3.88FDR. Was previously running 100/46 with my RPM/HT combo. It was good in the infield but I was getting caught fast on any section that required a full trigger. For now that motor will go in the box and will get the 12.5 BP rotor I have for open asphalt tracks most likely.



All D3.5 based motors have 30 built into the can. Will make a huge difference.
Well that makes a huge difference and explains alot!
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Old 07-15-2013, 10:07 AM   #228
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Originally Posted by Autocratic View Post
I'm going to be trying my Apex2 HT/HT setup this weekend. Going to start with my TRF417v5 at 92/46, which puts me at 3.88FDR. Was previously running 100/46 with my RPM/HT combo. It was good in the infield but I was getting caught fast on any section that required a full trigger. For now that motor will go in the box and will get the 12.5 BP rotor I have for open asphalt tracks most likely.



All D3.5 based motors have 30 built into the can. Will make a huge difference.
the HT/HT combo will work fine, you just need to gear the car all the way to the damn moon. On our small ~13 second asphalt track, I was geared at 3.37 with 55 endbell timing, and it was just right. I am geared taller than some 21.5 guys with that combo.
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Old 07-15-2013, 10:22 AM   #229
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I'm going to be trying my Apex2 HT/HT setup this weekend. Going to start with my TRF417v5 at 92/46, which puts me at 3.88FDR. Was previously running 100/46 with my RPM/HT combo. It was good in the infield but I was getting caught fast on any section that required a full trigger. For now that motor will go in the box and will get the 12.5 BP rotor I have for open asphalt tracks most likely.



All D3.5 based motors have 30 built into the can. Will make a huge difference.

What car do you have. I can't place a face to your posts. I run at mikes every week and don't recall too many people running a tamiya.
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Old 07-15-2013, 10:46 AM   #230
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What car do you have. I can't place a face to your posts. I run at mikes every week and don't recall too many people running a tamiya.
I haven't ran carpet in a few weeks. Sold a radio and in the process of switching over. I'll be running Saturday and Sunday's EOS race.
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Old 07-15-2013, 11:08 AM   #231
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I haven't ran carpet in a few weeks. Sold a radio and in the process of switching over. I'll be running Saturday and Sunday's EOS race.
I am running the ht/ht in my t4 at 3.8. It's fast on the straight and nice on the infield. Great combo on our track. I can't see going down to 3.37 like CPT. does. I might try and run 92/47 this week and see how it does.
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Old 07-15-2013, 12:16 PM   #232
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3.37 will be drastically overgeared at Mikes... Id be very surprised to see anything lower than 3.6-7ish be the ticket on the current layout.
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Old 07-15-2013, 01:00 PM   #233
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I am running the ht/ht in my t4 at 3.8. It's fast on the straight and nice on the infield. Great combo on our track. I can't see going down to 3.37 like CPT. does. I might try and run 92/47 this week and see how it does.
That is what I thought too, after talking to Warren about the HT/12.5 HT combo apex2. I ran it that low this weekend and destroyed my track's lap record in 17.5. Here is warren and I chatting a few pages back. Naturally the track layout will dictate your FDR. i would probably be around 3.5ish for a tight track, 3.3ish for a flowing open track. Our track is small, with a fast lap in the low 13s, but it isn't that tight, so we gear a little on the taller side. ~3.4 @ 55timing was the ticket.


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This past saturday I started at a fdr 3.3 at Jackson with 60 on the timing never came off higher then 140 I tried to raise timing and drop to a 3.5 but lost my infield speed have to test more at the region 2 this saturday I will try less timing see how it goes
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I don't get it.. that's geared taller than 21.5 guys. I was geared at 3.67 today, and the motor was coming off the track screaming hot. I don't think I can even gear that tall without changing to a different spur..hhmm..
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Old 07-15-2013, 01:14 PM   #234
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HMMMM, I wonder how all of this would relate to 21.5 F1? oh wait you guys are running the V2 17.5 right? Thats some serious gears you guys are pullin!
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Old 07-15-2013, 01:23 PM   #235
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I'm wondering if the HT/HT combo makes it's power so low in the rpm range that it needs to have the low FDR in order to properly stay in the powerband. If the FDR is too high you might be over-revving the motor which would cause heat issues.

My D3.5 motors seem to not care how you gear it, they're just fast anywhere. My current experience with the Apex2 RPM/HT combo is that they have a smaller window than the 3.5, but once you find the window they run very well.

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HMMMM, I wonder how all of this would relate to 21.5 F1? oh wait you guys are running the V2 17.5 right? Thats some serious gears you guys are pullin!
I'm definitely going to test this weekend with lower than 3.8FDR.

You coming up for the EOS race right?
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Old 07-15-2013, 03:08 PM   #236
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HMMMM, I wonder how all of this would relate to 21.5 F1? oh wait you guys are running the V2 17.5 right? Thats some serious gears you guys are pullin!
Correct... right now the apex2 is only in 17.5.

And just for the record, gearing all the way up to 3.3 to 3.4, is with the High Torque Stator, and 12.5 High Torque rotor. Moving to the RPM stator, broad-powerband rotor, or high rpm rotor, will drastically change how you gear.
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Old 07-15-2013, 04:27 PM   #237
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Correct... right now the apex2 is only in 17.5.

And just for the record, gearing all the way up to 3.3 to 3.4, is with the High Torque Stator, and 12.5 High Torque rotor. Moving to the RPM stator, broad-powerband rotor, or high rpm rotor, will drastically change how you gear.
Yup. The HT/HT combo can pull some serious gear. There's nothing off about that ratio.
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Old 07-15-2013, 06:02 PM   #238
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Yup. The HT/HT combo can pull some serious gear. There's nothing off about that ratio.
What kind of track can you run that on. Our track I believe is 96x40. It's got a nice long 96' straight with a pretty mixed infield of a couple 180's and some short chicanes. I am geared at 3.8 now and come off at 130 ish on the fan side and about 145 ish on the opposite side. I would be afraid that gowing that high would create a ton of heat. Or do you junk like autocratic said that the sweet spot might just be down that low.
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Old 07-15-2013, 08:03 PM   #239
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What kind of track can you run that on. Our track I believe is 96x40. It's got a nice long 96' straight with a pretty mixed infield of a couple 180's and some short chicanes. I am geared at 3.8 now and come off at 130 ish on the fan side and about 145 ish on the opposite side. I would be afraid that gowing that high would create a ton of heat. Or do you junk like autocratic said that the sweet spot might just be down that low.
My track is about 100x45 or so... but is pretty open. So instead of ~3.35 to ~3.4, I would run ~3.5 to ~3.6 if your track is tight.
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Old 07-15-2013, 09:51 PM   #240
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Originally Posted by Jerz616 View Post
What kind of track can you run that on. Our track I believe is 96x40. It's got a nice long 96' straight with a pretty mixed infield of a couple 180's and some short chicanes. I am geared at 3.8 now and come off at 130 ish on the fan side and about 145 ish on the opposite side. I would be afraid that gowing that high would create a ton of heat. Or do you junk like autocratic said that the sweet spot might just be down that low.
I'll know soon enough.
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