Heavy duty spring rear shock for fat rider?

[macribs]

What kind of spring do I need. I am weighing in at close to 140 kilos, should be about 300-310 lbs.
Then there is the Vector frame, motor, controller, batteries etc. I would guess bike and rider 200+ kilos.

How to know what spring to choose?

Will an air fork suffice? Like manitou dorado, dnm usd 8, etc where you can add air to compensate for heavy rider.
Or should I go for motoX fork?

Yeah and I am aiming for >45-50 mph so I need to know what I choose is adequate for my weight and speed.

 

[cal3thousand]

Use this:

http://service.foxracingshox.com/consumers/Content/mtbspringratecalculator.htm

That's how I determined that I needed a 600lb. spring from my stock 550lb spring.

 

[macribs]

Thx. That calculator does not seem to add in the weight of the bike. I guess for a DH mtb the weight is not that big. But e-bikes easily gos 50-80 kilos with all the batteries and what not.

 

[Punx0r]

The explanation of how to measure weight distribution suggests that the weight of the bike is included in the Total Riding Weight.

 

[cal3thousand]

The explanation of how to measure weight distribution suggests that the weight of the bike is included in the Total Riding Weight.

This^

 

[docnjoj]

It seems to work for suspension trikes too. Stein was right on at 750.
otherDoc

 

[Punx0r]

It seems like a good calculator and seems to explain why I was always bottoming out my rear shock

 

[macribs]

I have yet to get confirmed rear wheel travel for the Vector bike, but if I remember correct it was 8".
Does that sounds correct or is it too much?

Seems I should have 650lbs spring. But if that rear wheel travel is off I might need stronger spring.
So I hold off ordering until I know for sure.