Quote:
Originally Posted by OldTimer
The hole that locates the idler post is countersunk on the other side of the motorplate (otherwise the motor would not be flush to the motorplate) and a extra countersunk hole so close to the other would weaken the area as there is not much cf left.
I choose the 78t as it is the kit spur and its what most people use, i am in the process of getting some 78t hydra drive spurs made. Also using the smaller spur allows you to move the motor more to the rear of the car.
And as you point out as a 78t spur is about 1mm smaller od than the hydradrive casing you would need to shave / dremel off half the width of teeth on the idler, so the hydra casing does not rub against the idler gear, but as the idler is over twice the width of the spur gear this would not cause a problem. But this only needs to be done if your using the hydradrve.
If you just using the two pad slipper then there are no extra mod's required.
|
A 78t Hydradrive spur would be excellent! I had already "chopped" an
idler gear when experimenting with the idler mod. I was concerned that the idler may move on the bearing as it now had a degree of freedom towards the motor plate and the losi manufacturing tolerance between bearing and idler is rubbish (almost a completely loose fit in some cases).
I ended up bonding a bearing into the 1/2 idler - tricky solution, but it worked - only took a drop to hold the bearing in place.
Make sure to come over and say hi at the Petit RC. All the people from Ireland are pitting together and I'm the only one with an Atomic Carbon.