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Old 07-28-2009, 03:29 PM   #781
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Anyone try the new TC5X chassis and top deck from EXOTEK?

http://www.exotekracing.com/EXOTEK_N...6/29_TC5X.html
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Old 07-28-2009, 03:37 PM   #782
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Yes, it works great on asphalt.
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Old 07-29-2009, 10:01 AM   #783
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Quote:
Originally Posted by Kajman View Post
Anyone knows how about flex in offroad? Should it be more or less? Everyone talks about asphalt, how about rally cars? Some people here use tc5 and tc4 for it...
Kajman - the reason we talk about asphalt here is because this is the onroad section of the forum. . . you could start a thread over on the offroad section. . .

I love rally - I actually race rally in full-size cars (Dodge Neon makes a great 2WD class car) so it might be fun to play with rc rally cars but off-road tracks have too many jumps for rally. . . :/
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Old 07-29-2009, 10:24 AM   #784
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Well, offroad is treated as for buggies and 1:8 vehicles mostly, here in Central Europe we have quite strong onroad rally class competitions where we use onroad cars like f.e. TC5, Xray and so on.
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Old 07-29-2009, 11:04 AM   #785
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I had quite a discussion on a previous thread looking for cases where a full size car might need more flex. It turns out that racing on dirt is the case. On asphalt more stiffness is usually desirable in full size. The fellow talked about choosing a space frame chassis that by chance had a little more flex in roundy round racing. Oval on dirt, sprint cars I believe.

So yes the RC dirt car can be easily made too stiff. A TC4 having much more flex might be an improvement over the TC5 chassis wise. Unfortunately that extremely responsive solid shaft driveline might be less desirable than the double belt. A XXXS with the long belt should be ideal. I would set up a TC5 with high flex, ITF, for rally racing. On dirt you need very smooth inputs to the tires to hold traction.
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Old 07-29-2009, 02:57 PM   #786
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hello!

i want balls bearings for wheels tc 5 but the team associated are very bad.
the measures is 6x10x4 mm Where buy other more good?.

sorry for my english


thanks
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Old 07-29-2009, 03:03 PM   #787
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Quote:
Originally Posted by antonio_cadiz View Post
hello!

i want balls bearings for wheels tc 5 but the team associated are very bad.
the measures is 6x10x4 mm Where buy other more good?.

sorry for my english


thanks
hi!

they are 6x10x3mm, you can look at ebay or stores.

Btw, IMHO asso bearings are very good, just clean and oil it
I use my asso set 4x and after this I drop some to trash

Regards!
m.
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Old 07-29-2009, 04:24 PM   #788
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Guys, there is no difference in performance between delta and wye winds. The difference between the two are kv related. A Neu 1515 1D motor has a kv of 4100. A 1515 1y has a kv of 2200. The main reason for using one wind over the other is to target a certain kv. Wye winds are usually favored over deltas becuase they are more tollerant to timming advances. Deltas work best at low timming, advancing the timming on a delta only generates more heat and not performance. Hope this helps.

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Old 07-29-2009, 04:28 PM   #789
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That is not that simple. True, that same kv Y and D will be similiar. But f.e. GM and CS Electronic motord delta work best with 30deg timing. People say Y is more efficient, but in case of above mentioned delta are more efficient (over90%) than Y. So story is hard to explain
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Old 07-29-2009, 05:00 PM   #790
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Antonio- Look at a set of these. They have rubber seals. Our wheel bearings fail from two causes, dirt entry (get the rubber seals) impact with the boards (buy plenty of bearings till you quit hitting the boards). These are four packs.

they also have an ultra seal which has a very small gap that limits dirt entry.

http://bocabearings.com/main1.aspx?p...CWK106-2YS_NB2

Buena Suerte
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Old 07-30-2009, 04:53 AM   #791
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hello!
very thanks to M.Abramowicz and John Stranahan

bye.
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Old 07-30-2009, 09:10 AM   #792
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You are welcome.

Here is pic of the top strap with dimensions layed on. I checked these wigth a dial caliper.
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Old 07-30-2009, 06:03 PM   #793
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Heat Control Continued

My touring car is in good condition to run in the heat with a 3.5 now. Things that I did. I added Novak's largest capacitor to the Tekin RSPro speed control. I installed a homemade fan made from a pinion to the armature of the LRP X12. I made it a centrifugal fan (like a blower) rather than an axial fan like a home/ shop fan. I have one electric fan left to cool it. It was 98F today although the track was only 117F. Things were quite cool after a 6.5 minute run. The hottest was one part of the speed control on the bottom at 160F. It has its own fan which blows on the solder posts.

Novak Internal Fan cooling Kit Eagle Racing, Integy
Now I wanted to duplicate this setup or improve it with more store bought items and less handwork. I bought a Novak internal fan kit made by Eagle Racing imported by Integy. It has a tiny axial fan that mounts on the tapered part of the pinion side of the armature. I used red high temperature loctite and tapped it in place with a guide. A small steel cylinder from my Hyperdrve bearing installation tool. It did not want to go on square, but with a little more work it was fairly true. Now the kit is imported so all the instructions are in chineese with few diagrams. The kit also has a nicely ventilated endbell, silver colored. The fan and endbell fit the ballistic series of motor with the stock armature. There was good air exit paths now, but nowhere for air to get in the motor. I made two large vents that match those in the stack at the back. You can see one in the photo. I then mounted the integy heatsink and fan. This will help by blowing air into the back of the motor. The armature fan will direct it forward and out and hopefully will stay in place. I have my doubts. Anyway, mostly storebought but some handwork needed. Speed passion does sell a 3.5 with an internal fan as an optional armature. The Speed Passion can is well ventilated. The Speed Passion would be the lowest effort route.

Note that the rear endbell comes right off the back of the motor so the holes are made with no danger to the windings.

The Fantom 3.5 advertized at Stormer with an internal fan did not have one. I sent it back.

I narrowed the blue heatsink by one row.
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Last edited by John Stranahan; 07-30-2009 at 06:15 PM.
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Old 08-17-2009, 05:58 AM   #794
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has anyone tried nitride bearings on the tc5? for example http://www3.towerhobbies.com/cgi-bin...&I=LXSHU2&P=ML
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Old 08-22-2009, 09:01 AM   #795
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John,

Have you though about powering the fans on a seperate (small) lipo packs?

I though about using a small lipo like this.

http://www.hobbycity.com/hobbycity/s...Ah_2S1P_15-25C

Using three yeah racing fans. Two on the motor and one on the esc.

http://www.youtube.com/watch?v=muH9TVsbNjY
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