43 replies to this topic

[chris_uk]

Im sure scuffs will be along shortly to bawk at you if your wrong. Remember scuffs, he said 'isnt there' which means he doesnt know so try keep it civil.

[Scuffers]

Isn't there a problem if you run tenders that do not fully collapse that at the moment that it does collapse (bump), spring rate suddenly increases to the rate of the main spring. For example, you use a 300 lbs/inch tender and 600 lbs.inch main spring. Combined rate is 200 lbs.inch. At the moment the tender collapses, the rate will increase to 600 lbs/inch. So you go from 200 to 600 all of a sudden. Without having any experience with it, I can imagine that it's not exactly the kind of behaviour you're looking for.

 

 

yes, but please remember, we are talking about a rate change, not a load change (and in reality, a tender spring will not be 100% linear at the ;ast few mm of travel before being coil-bound)

 

so, if you go from 200 to 600 in say 3-5mm damper travel, I very much doubt anybody could actually 'feel' this point, (Jamie's is on 1000+350's and I can't feel the transition)

[alexb]

I've no problem what so ever to get my ears washed even in an uncivilized way, Makes for more interesting reading I have to admit that I have a tendency to go for the Scuffers threads, as at least you learn something. OK, not the social niceties, but that's not why I'm on the forum anyhow.

 

Like I said, no experience. I'm really surprised that you don't feel that factor 4 (effectively you go from 250 to 1000 in the 350+1000 set up). To me that looks comparable to hitting a bump stop, so some give, but not a lot. And I do realize we talk about a rate change, but that translates into a load change. The rate change is a step function (Ok, almost), which causes a sharp incline in the force versus compression curve. So the step in rate causes a sharp bend in the load curve. Anyhow, pure theory and how this relates to what you actually feel or not, no idea.

[Scuffers]

to put this in context, hitting a bump rubber your into 3,000-10,000Lb rates in 10mm's of travel.... and yes,you will feel that!