Hop Up Centre and Diff Pulleys for 501X

[DaveG28]

Hi All,

Tamiya are bringing out 18T centre pulley's, and 37t diff pulley's, along with new length belts, for the TRF501X. Does anyone know what effect this may have on the car?

I am asking as was about to get replacement 16T pulley and belts anyway, may as well get the new ones if there is some advantage?

Dave

[jimmy]

bigger pulleys all round I guess just means less stress on the parts, looser belts can be run for less friction etc.

[bender]

I wonder how much longer the belts are?

I just tried to fit the white 36T pulley up front and the belt was too tight, even at the loosest setting.

It will be interesting to see if the different internal ratios affect the car in any way, as there are now many different combinations you could run.

[Fabs]

I've been running 18T centre pulleys on my 415 for now a year and a half. For me, the main advantage is a much longer lifetime of both belts and centre pulleys. The belts will be 3mm longer (1 tooth) for this change.

[BORMAC]

I got myself a set of the little blue alloy belt tension adjusters and these have stopped my belt slipping on the standard pulleys.Ive been running my belts 2 clicks looser than what the manual suggested.No problems yet.

[mobilow]

Is there a combination in hardened aluminium or steel center pulleys available for the sedans ? that will fit the 501 ?