K1 (Small Bore) Shocks+Durango springs?
 

Hi everyone,

I bought a K1 recently, and on arrival of the car I was surprised to see how much bigger the K1's spring diameter is compared to the Durango Big Bore springs I usually run. As a result, the Durango Big Bore springs don't fit on the preload adjuster.

The TD springs have a 15.5mm inside diameter. The K1 springs have a 16mm top inside diameter, 17mm main inside diameter and 13.1mm bottom inside diameter. The bottom spring retainer is an easy fix: I'll just use a Durango cup and shock ends.

As for the preload retainers, I could have someone machine it down to a 15-15.25mm diameter to make the Durango springs fit, but I'd rather find a standard part that solves it. Does anyone have suggestions/a fix for this? :)

Buy the core rc spring kits fir the k1

You could try turning the upper spring collar upside down, and then use the upper spring seat from Traxxas 3768 set.

Core RC do some spring seats that may work, you can find them here;

http://www.rccarshop.co.uk/index.php...to-13mm-4.html

Maybe you could contact Schumacher or MB Models to confirm.

The core collars allow schumacher big bore springs fit the old small bore shocks, they don't fit the k1 shocks as they have large collars already.

Thanks for the suggestions :)

Unfortunately, spending 40GBP on two spring sets doesn't fit in my budget.

The Durango shocks are a bit longer than the Schumacher ones, so reversing the adjuster and add a Traxxas spring seat results in a big preload on them. I can reduce that preload by 3.5mm if I cut off the current spring seats entirely. Seems I'll just have to try it out!

If there is only .5mm difference in the top diameter of the spring, could you not just push the spring onto the seat?

It might be possible, but this reduces the number of active coils. This means that less coils have to make the same compression, putting more stress on the material. This can damage them and alter the spring rates/make them inaccurate. Besides that there's also a chance that stretching the springs over the seat will damage them too.

With my financial situation, I can't risk damaging sets of springs :p