Archive

Archive for April, 2013

Raceberry 417 conversion

April 7, 2013 3 comments

I recently jumped on the raceberry bandwagon and ordered the 417 conversion kit from Tonisport (http://www.fast-webshop.com/tonisport). I must have set some kind of record in international post because it arrived at my house in Sydney 4 days after being shipped from Germany!

The pack contains (almost) everything you need to complete the conversion, including 2mm top deck, 2.25mm “standard” bottom deck, yokomo motor mount & centre shaft assembly, frond and rear belts, and some 1.5 shims. The only included instructions are for the yokomo pulley assembly but the build is straightforward – I did consult the BD7 manual to make sure I hadn’t missed anything. The belts included are a raceberry branded front belt and a yokomo rear belt. I did a little research and found out that the front belt is the same size as the long optional belt for the Corally PHI’09.

Image

I purchased the optional soft bottom deck too, which is also 2.25mm but a different weave and should provide more grip in cold and low grip conditions. Compared to the TRF417V5 bottom deck, the standard raceberry deck is noticeably stiffer, while the soft raceberry deck is a fraction softer than the V5 deck. This photo shows the different weaves – the soft deck is at the top.

Image

I’m using a 417X for the conversion so I can test it back-to-back with my V5. ┬áThis means there is a bit more shimming to do, namely 0.5mm under the bulkheads, and 2mm rather than 1.5mm between the bulkheads and top deck. I will order another V5 servo mount soon but in the meantime the Smokem mount also fits the raceberry chassis.

Image

The Yokomo motor mount is keyed into the chassis and everything fits very well, and the quality of the raceberry carbon is excellent. The internal ratio of the car changes from 1.94 to 1.85 due to the 20t centre pulley, so I’m using a 116t spur gear to get the desired FDR for modified racing. One thing I encountered was that the conversion does not include the 3x5mm button screws needed to mount the spur, and 6mm screws will bottom out in the pulley. I didn’t have any 5mm screws, so I had to dremel some 6mm ones to fit. The pulley itself has a bit of slop between the two pulley pieces, I’m not sure how to remove it so if anyone can help please let me know. The side-to-side play was good and I only added one 0.1mm shim. The rear belt fits well, but the front belt seems a little big and requires the eccentric holders to be turned 2-3 notches from centre – hopefully it doesn’t stretch!

Image

Image

Image

Image

Time for the suspension and electronics. There is less space to mount everything because the motor is further forward, but all my gear still dropped in fine. Something I noticed is that a normal antenna tube doesn’t fit through the middle of the top deck easily, so for the first time ever with a tamiya I’ve had to use the outside antenna mount! There is no hole underneath the chassis to adjust the pinion but you can reach it from the top – more or less.

The flex is quite different to the TRF417V5 when checked by hand, the raceberry car seems to flex from the motor mount forwards rather than straight through the middle as the V5 tends to. How will this differ on track? I’ll find out on Tuesday (weather permitting).

Imagep.s. I ran out of light to take a nicer photo, I’ll take some more of the final product in the coming days

Categories: Product News