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Old 30-01-2012
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Join Date: Jul 2008
Location: Whitstable
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Quote:
Originally Posted by Chris View Post
Dear all,

When building the TRF 502X I have found some design mistakes:

- the shock tower attachment on the front upper gearbox cover does have a wrong angle. This should be the same angle as the front kick-up. The result is binding of the front shocks when mounted according the manual. It can be solved by use of a double shock tower, but the shocks won't be square with the lower arms. The TRF 511 doesn't have this problem.

-The slots in the diff joints are too large, in this way dust can easily enter the "sealed" gearbox. To prevent this i used a piece of heat shrink to cover the slots. (only covering the slot that's inside the gearbox)

Some minor things:

-Where is the angled steering system from the TRF 511? I for the best steering characteristics the steering system should be parallel to the steering uprights, like was done on the TRF 511 and 501X.

-The rear shocks are not reversible like on the TRF 511. Shocks can only mounted on the front side of the suspension arms. BTW: I didn't like driving the rear mounted option on the TRF 511.

-The gear box housings are not fully sealed like on the TRF 201. A sealing edge is missing. The gearboxes are very stiff and secured with 6 screws, so hopefully there is no need for sealing edges.

-accessing the motor screws is not easy, an improved motor mount like on the B44.1 should be nice.

- a double slipper clutch, I like this option very much on the TRF 511

So hopefully tamiya releases soon an updated front gear box cover and improved diff joints.
This is your post

agree with point one 2mm spacer longer bolt job done

point 2

no more than any car with similar design (B44 D4)

point 3

not possible as gear box in the way

point 4

no where does it say this can be done!

Point 5

Again no more than cars of similar design (B44 D4)

Point 6

Not a problem if kit supplied allen key used

Point 7

Both the 511 and 502 have the same type of slipper clutch

like i said it sounds like you dont like this car.

stu
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