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Old 01-02-2011, 05:29 PM   #1696
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Any shops in the U.S. have these parts in stock?
HPI73507
HPI75188

Thanks,
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Old 01-02-2011, 05:59 PM   #1697
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Default My TCX maiden drive ended in dissappointment

I did a comparison from my old RS4 Pro car to the newly / Christmas acquired TCX.

I took my trusty "old" and vintage HPI RS4 Pro out to my local hobby store/track. My intention was to use the same motor, speed control, tires and gearing in both the RS4 Pro and the TCX and see what comes of it. I used the stock setup of the TCX as per the instructions EXCEPT the shock locations. For that, I used what all the pros seem to agree on, #3 setting for both front and rear. I would have loved to set it up using the "base standard setup" of the pros but Hot Bodies, of course, didn't provide us with those same parts in the standard kit. How really annoying. Just to note, I don't know of any manufacturer who does do this.

So I get a lot of laps in my RS4 and was confident that I could get a comparison between the two. I probably had 250 laps or so with it. Most of them were timed. Of course, I grazed a wall or two now and then, but it didn't break anything. I ran ball diffs front and rear and full-time AWD (i.e. - removed one way clutch).

So I switch out the electronics and tires and put them into the TCX. The gearing was the same. I ran the standard spool in the front and the ball diff in the rear. My initial impressions were that it ran quieter and that the car definitely felt a lot more stable. However, the RS4 had more steering. I would assume that the ball diff in the RS4 helped with this. While the spool in the TCX helped with stability, I think it gave some away in steering. I would have loved to have been able to do timed laps with the TCX as well but... the freakin hub broke after a very soft tap at the 5th lap!

I was very surprised how brittle this part was considering that I grazed the wall much harder and with more frequency with the RS4 Pro and broke nothing! In fact, in roughly 13 years of owning and racing the RS4 Pro, I don't believe I have ever broken a hub.

So far, my gripes with the kit are the following:
1) For $460, did not include parts that would be considered the "base setup" of the pros: 3 hole shock piston, shims/spacers, pink front springs, toe blocks, 40 wt shock oil. In fact, for that money it should have included a body, wheels/tires and at least the standard basic tools (1.5 mm and 2 mm allen wrench, cross wrench and turn buckle wrench. I mean, how much could these have been to throw in?). There is some serious markup in this kit.
2) Forwards and backwards play on all 4 shock mounts.
3) Play on the steering. I thought that the play in my RS4 Pro was excessive. I was wrong when the the TCX seems worse).
4) Play in the steering knuckles and C hub carriers. I don't know if other cars (TC6, Photon, Xray, Tamiya, etc.) have the same issue.
5) Brittle steering hubs
6) Putting a pinion gear on is a major PITA
7) The inside servo mount is awfully close to the belt. If I got to run the car long enough, I am betting there would have been some evident belt rubbing there.

Quote:
Originally Posted by kid TT-01 View Post
Since the TCX uses the same knuckles as the normal cyclone. The weak point of the car in crashes will be the knuckles and c hubs. Other wise the car is flawless
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Originally Posted by idbdoug View Post
Yea, you better get some spares:
#73507 - CARBON GRAPHITE BLOCK AND HUB SET
idbdoug
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Originally Posted by am View Post
ok, looking into getting a TCX but evry were i look there seems to be difficult getting spareparts. Suspension arms, castor blocks steering knuckles and so on i out of tock evrywere. I need it shipped to europe, even A-main and stormer is out...

Has HPI/HB a parts problem at the moment?..
So I have this same issue... No one seems to stock the #73507 - CARBON GRAPHITE BLOCK AND HUB SET.

But as luck would have it, I bought some spare parts for the RS4 Pro that I thought "might" fit the RS4 Pro. These were the HPI 85092 - hub and knuckle set for the HPI Sprint 2... It DID NOT fit the RS4 Pro... But it's a direct fit for the TCX!!! Here's a link to the part.

http://www3.towerhobbies.com/cgi-bin...I=HPIC8592&P=K
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Old 01-02-2011, 06:00 PM   #1698
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Also has anyone tried Tamiya 416 steering knuckles? Part # is TAM51332. It seems pretty close to me except the steering holes. The inner one matches up pretty close to the outer one on the HB part. Thanks for the input.
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Old 01-02-2011, 06:34 PM   #1699
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Originally Posted by John Doucakis View Post
I am working on my new ride for 2011.

Click on the photo below for more..

Very nice, all the bling bits i see The rest of mine are on the way and then my car will be "finished" Post some more pics of the finished build when its done
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Old 01-02-2011, 06:41 PM   #1700
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Originally Posted by Ty View Post
Also has anyone tried Tamiya 416 steering knuckles? Part # is TAM51332. It seems pretty close to me except the steering holes. The inner one matches up pretty close to the outer one on the HB part. Thanks for the input.
The guys tested them at iic and ran them at worlds so they do fit, just a tuning option id say if you wanted to try them
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Old 01-02-2011, 06:48 PM   #1701
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TY,

You can use them, but changes the ackerman, run between 0-1mm instead of 4mm to 5mm with the kit items.

M3Armand,

For pinon fitting, flip the layshaft over, so the screw heads are on the side of the motor, this moves the spur outwards so you have clearence for your driver to tighten the grub screw...
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Old 01-02-2011, 07:03 PM   #1702
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Well this was my day today the broken one happened durring practise
the bent one happened during the 3rd heat which I was on a tq pace dont know if it would held up but I didnt find out
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Old 01-02-2011, 07:38 PM   #1703
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My LHS has the steel 44mm bones in stock. Is it a real big deal if I use this shorter length up front? Thanks again.
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Old 01-02-2011, 07:56 PM   #1704
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Originally Posted by Ty View Post
My LHS has the steel 44mm bones in stock. Is it a real big deal if I use this shorter length up front? Thanks again.
You could pop it out of the outdrive by touching a turn. It is not long enough for the front.
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Old 01-02-2011, 08:03 PM   #1705
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You could pop it out of the outdrive by touching a turn. It is not long enough for the front.
David,
Thanks for the reply. I guess I will wait for the 46mm. HB needs to get their act together and get some parts out to dealers and distributors.
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Old 01-02-2011, 08:04 PM   #1706
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Quote:
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David,
Thanks for the reply. I guess I will wait for the 46mm. HB needs to get their act together and get some parts out to dealers and distributors.
I was online earlier and saw them at HB and at Stormers...

http://hotbodiesonline.com/products/en/68734.html
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Old 01-02-2011, 09:32 PM   #1707
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I was online earlier and saw them at HB and at Stormers...

http://hotbodiesonline.com/products/en/68734.html
Thanks David. I ordered some steel HPI 46mm ones from Hong Kong, I wish they carried them in the U.S.
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Old 01-02-2011, 10:14 PM   #1708
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Default Photon parts

well after going thru a total of six (6) front bones I just put on the top photon bones....not the absolute best fit but i can see how it works.

also put on the photon pivot ball setup...took about 90% percent of the slop away from the front end...
by the best thing for the car...
so much easier now to setup the front toe....it was almost impossible before.
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Old 01-02-2011, 10:35 PM   #1709
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Any of you TCX drivers thought of fabbing up a slipper setup for the front spool, it's a shame to see so many broken front shafts. Would the TC6 slipper spool fit in the car? Just a thought...
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Old 01-02-2011, 10:49 PM   #1710
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Default 46mm

i think the weak part on the dog bones is not the shaft itself..but the part where the pin and coupler sits it usually warp and deforms ...once warped then it will start to bind inside the axle.....then just starts to make the car steer more to one side...due to the binding.

My last bone lasted 1 a pack...
i think it's the material they using for the part..
the rest of the car is rock solid..

broke two arms....no other parts....
fixed the arm breaking by cutting the axle down so it doesn't go past the wheel.. and put a Parma TC5 bumper.

i sized up a TC6 spool but the holes did not line for the pulley...needed to much chopping on the pulley to work for my taste. did not try the TC5's
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