Hi guys I have a XRC buggy Its spent more time in the workshop than it has in the dirt, I did not even run a tank through it before I replaced the pipe with a samba tuned pipe, The pipe did improve it but still not very much. So then came along a zenoah 27cc topend this made a fair bit of difference but still not enough to take the baja's ect, So out came the 27 and that got replaced with a cy bottom end with a zenoah 29 cc ported topend a racing carb and a harm airfilter.
Now were talking, where we go out thier are around 15 other 1/5 scales consisting of baja's and FG's the XRC is by far the quickest thier were talking wheelies from take off it will roost any offorad surface like its in the sand with a set of paddles. The top speed of this is amazing All the guys comment on how much power it has, mainly down to the geraing and how light the car is compared to a baja, Only trouble is that it will run for around 10 mins before a weak point gives way.. So far some of the other mods which I have done has been 3mm carbon chassie rails going the full length of each side of the chassie, I have had to add Harm titanium hex nuts both sides as the standard alloy ones strip out straight away, Harm torsion rear diff, Harm complete gear set set up cosisting of the alloy spur mount as the plastic one stripped harm cush drives, Harm spur gear and Harm titanium pinion, Also harm alloy clutch houseing bracket to replace the standard plastic one which melts from the heat of the bearing. The engine has been completly re mounted useing different engine mount locations with stronger materials, And hardened steel chassie braces.
I have had to re design the brake set up as the old one would just pull its self out so now it mounted with nuts and bolts rather than pressed in. The list of mods goes on and on, I was hopeing that the re mounting of the engine with stronger mounts would solve my gear stripping problem but it has not, the chassie is very weak. The next mod which will be done which will solve all my problems will be, a bracket which will go from the front of the clutch houseing to the front of the spur gear the shaft for the spur all ready has a thread for me to work with but the bell houseing is going to be drilled and tapped with a thread. this will stop the two gears from pulling apart and stripping under the tork of the engine with the weak chassie. The good thing is that the problems I get never accure twice so when something gives way it gets modified and does not go again so im slowing working through all the weak points.
Once I have finished with the chassie I will put a set of disc breaks on the front and go from thier..
Ive kind of passed the point of no return with the XRC Due to the amount of man hours and sleepless nights which has been spent in my work shop fixing her up, So Its going to be a ongoing thing.I would not recomend anyone else to go for the 29cc as its very impractical for the car I have had to go out and buy another 1/5 scale to use while i fix the XRC up just so I can have some fun with the other guys.. The radio I use is a spektrun DX3 with a ACE digital 12.6 Kilo MG servo for the breaks and a hitec hitork metal geared for the steering which works a treat.
Heres a pic of the XRC this pic was taken before it got the Zenoah engine.
Thanks
Piston
