Quote:
Originally Posted by SHY
This is very interesting! Jonathan, please explain more as to 1 vs 2 vs 3 belts! Pros and cons!
I find the 3 belts on the original XX4 easier to deal with compared to the X-5's one belt, suffered a lot from belt skip on that one (even with 3 belt rollers mounted, two idlers etc). Still a great car, make no mistake about it!
But the belts on the XX4 when put on astro break very easily... I guess there's too little flex on such short belts? And also they are quite narrow.
And it's a shame! The xx4 is just AMAZING to drive! No matter the conditions!!!
Another thing, isn't the xx4 narrower than for instance a B44?
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3 belts - To complicated to me i like to keep it simple, also more rolling resistance with 3 belts more pulleys bearings etc, re the XX4 if it did not have some of the belts fine pitch it woudl be better, but it was design in the days of 18-20t motors which people do forget.
2 belts - Main problem is you have to have the motor sticking right out the side of the car ie 501 unless you have a high layshaft but then you raise the c of g a lot so you are comprised whichever way you go, unless you introduce some gears into the drive train.
1 belts - I did have a xxx4 knocking around so that did push me down the single belt route for this car a little. But a very free drive train, the motor can be central in the car, a very low c of g, and lots of options for moving the weight distribution. On the raptor the whole motor mount / slipper & spur assemble can be moved forwards up against the steering servo or moved back 2-3 inch's so its against the lipos.
But i am not sure how far i will take the raptor as the cost's are mounting and for one man in a spare room its hard work and very expensive. And to get the car more race ready is going to take more investment, or i could simply buy something like a 410R and do a little work on it
and put the raptor on the backburner.
One thing i will add the raptor did float over the bumps like a well setup xx4, so i know the suspension is sorted lol.