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Old 12-27-2008, 12:28 PM   #12151
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The CO27 is onroad (probably won more stock class races than all of the other 27T motors put together)...you may be thinking of the P2K2. The internal ratio on the FK's is 1.77, which still puts FDR with a 93/27 at 6.10. A 116/46 would get me in the ballpark but I don't know if it will fit, and I don't want to order a bunch of gears that I won't need as I have a pit box full of them already.

-rocky b
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Old 12-28-2008, 12:10 PM   #12152
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Here's a question for you guys running brushless in your T1's (Chris I'm looking at you)...what spur are you running to get the low FDR's required by brushless? Santa brought me a Speed Passion combo and I was told to start around 4.50 FDR, and the limited motor adjustability is driving me nuts! A smidge too high and the rear belt rubs the can, a smidge too low and the can rubs the pavement. Im running the low-ratio pulleys (32/18 1.77) so I'm looking for around 2.54 spur/pinion ratio. For reference, I ran 124/37 with my CO27 (64P obviously lol).

-rocky b

Well going brushless is where the FK04 and earlier cars show their age. We run around a 4.6 FDR here which is possible with a 116 spur and 44 pinion(works out to a 4.66). Ihave this on my evo now[IMG][/IMG]

But thats really only half the issue, cooling the motor is a huge problem. Having the motor centered in the chassis is great for weight distribution but it gets less air on the motor to cool it down. And with the layshaft right over the motor its almost impossible to put a heatsink/fan on the motor. I did machine one of the novaks to fit inside the bulkhead/belt but I still have to find a better way to fit it in around all the componets as you can see.
[IMG][/IMG]
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Old 12-28-2008, 01:09 PM   #12153
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i have ran mutch lower FDR on mur 2 T1fk04 cars lately . we had a super oval lately and i opened up the chassis around the bottom of the motor to rotate it down more and did a (64p) 88t spur and a 63t pinion = 2.47 fdr
i actualy like running BL in these cars you have mutch more FDR rance in these older 04 cars and with the motor being more near center with the lectronics on the endbell side and a lipo in the other it balances out @ about 1450ish in vta trim i will take some pics this weekend to show you guys how its done i am rebuilding my friends cars (he is new to it and isnt very organized with the install) it has some beefy electronics
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Old 12-28-2008, 03:41 PM   #12154
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Thanks Chris I think I'll pick up a 114 and a 116 and go from there...how much clearance do you have with that spur/pinion? Is there room to go bigger on the pinion or would it drop the motor lower than the chassis?

There has to be a cooling solution...I'm not a big "fan" of fans, and that's just another wire to keep away from the belts, so I'm gonna look high and low for a heatsink that will work.

jlfx: a 2.47?!! How fast was it down the straight??

-rocky b
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Old 12-28-2008, 06:53 PM   #12155
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Well Rocky I just did some playing around and I can fit a 44 thru 47 with a 116 spur without any chassis mods. That gives a gearing window of 4.66 to 4.37, not a big window but all of those will fit without any(very close with the 44) belt rub and without grinding on the chassis for motor clearance. This is with a novak motor and this might not be possible with other motors due to differences in the endbell design. If I was to notch out the chassis and drop the motor level or just under the chassis I could get down to an FDR of close to 4 with the 116, I think. But you dont want the motor hangging low as this could cause it to drag and create lots of handling issues. BTW which wind motor did you get?

The ratio that jlfx got to is cool but I think it might have thermaling issues in a roadcourse, oval is very different and does'nt require the constant on-off throttle which with a big pinion like that I suspect would lead to higher temps. But it should have been a rocket on the straights like that, got any video jlfx The biggest pinion I have is a 55 and the smallest touring spur is 92 which would work out to a 2.96, I'll have to try that combo sometime and see if it fits.
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Old 12-28-2008, 06:54 PM   #12156
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like i said we were running a flat asfault oval in jonesboro AR @ rc hobbies raceway ( he held the us asfault nationals here) the track area is 70w x 140L
and inner rails were 45w x 110 we were running 5.5-5.8 sec fast laps
in mod (3.5turn) we were running about 5.1-5.4 best also we were running in 45deg weather or we would have been tring to keep the motors cool all day
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Old 12-28-2008, 06:59 PM   #12157
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Thats a great looking track, I remember seeing pics of the track back before the on-road nats and wishing that I could go.
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Old 12-28-2008, 07:28 PM   #12158
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go to nexisracin.com they have some spurs down to 82 i think and i think they stock pinions up to 61-2 my 63 is the only one i have ever seen but i here on here somewhere that someone has a 66t for sale and the 1/12 guys have some spurs down to 72t (yes, 64p)
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Old 12-28-2008, 07:30 PM   #12159
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also i was rubbing my belts when i was geared with that combo but i sprayed WD-40 on them and it didnt make the motor run hot 45 out side and the motors were right at 100deg
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Old 12-28-2008, 07:39 PM   #12160
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wow look its fellow T1 folks hah. I love my T1 just no place to race in Houston right now that I'm aware of.
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Old 12-28-2008, 07:47 PM   #12161
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wow look its fellow T1 folks hah. I love my T1 just no place to race in Houston right now that I'm aware of.
That sucks, your welcome to join us here in AZ, but is a tough commute
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Old 12-28-2008, 07:49 PM   #12162
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ha just might have to after the investment (money blown) on this hobby in the last 30 days. I'm currently running parking lot oval with my t1 and my t2 009 has yet to be driven
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Old 12-28-2008, 08:11 PM   #12163
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Jan 9th will be the first race in close to 9months on our on-road track, since then its been only p-lot racing here, or traveling 90miles to the carpet track.
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Old 12-28-2008, 10:14 PM   #12164
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It's a Speed Passion 13.5 for Pro Stock next season...they threw me out of Stock after slingin the 004 around so bad on them last season I had to dremel the chassis a bit to get full motor movement, but like you said have to be aware of how low the motor sits because it can now drop below the bottom of the chassis. I found a 116 spur in my box so I just need to get the 44-47 pinions because that is right where I need to be FDR-wise. Sweet!

Now the cooling thing...Trinity makes a center ring heatsink (like the Novak has) for monster trucks that has a bulge on one side with fins. http://www.redrc.net/2007/09/trinity...tor-heatsinks/ If you could orient it just right that one could work for you...my SP is one solid can, so I am still looking. I'm thinking about just getting a regular clamp-on style and cutting off just enough to cover the part of the motor that hangs outside of the bulkhead....every little bit would help I think.

CypressT1...which T1 do you have? Wanna join our cult?

-rocky b
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Old 12-29-2008, 07:45 AM   #12165
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CypressT1...which T1 do you have? Wanna join our cult?

-rocky b

To my knowledge its the factory kit. I traded a 16.8v E-maxx for the car, 9 mod motors, 4 saddle packs, a tons of parts and tires with inserts along with about 4 bodies
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