37 replies to this topic

[racingbob]

will be changing bump stops

have got some new rubber ones I have modified

taken a bit off them and shaped so about 1/4" shorter

 

or

 

should I put on the poly ones instead

 

car is modified fun car only

 

looks like going with standard new rubber cones slightly lowered

and spax shocks

 

will this be ok for fast road as don't like the car dipping to much round corners

but not racing type speed just lanes b roads

 

I see fitting red dots on the front you have to modify the lock nut been told

on here make it thinner or take off (but wont taking off make dangerous )

 

am still not 100% sure on standard cones tho the ones I got could go on the back

 

will red dots still be a better ride than cones that are knackered

 

I like spirited driving but that's as far as I go, have had my days of racing so don't need that

[Steve220]

If you're bottoming out a lot, I wouldn't go for the poly ones, they can be quite harsh!

[Cooperman]

Rubber ones will be ideal. If it is for the road I would advise against lowering it much. When lowered, the rubber cone spring does not reach a high enough rate to prevent the suspension hitting the bump stop on bumpy roads, and bumpy corners, and this means that it won't steer as well if you hit a bump in a corner. It will drive better if the suspension can work as intended in terms of geometry with adjustable dampers helping to set the optimum ride and handling profile.

[racingbob]

Rubber ones will be ideal. If it is for the road I would advise against lowering it much. When lowered, the rubber cone spring does not reach a high enough rate to prevent the suspension hitting the bump stop on bumpy roads, and bumpy corners, and this means that it won't steer as well if you hit a bump in a corner. It will drive better if the suspension can work as intended in terms of geometry with adjustable dampers helping to set the optimum ride and handling profile.

I assume best stick with new genuine rubber cones

[Dan]

  Be very careful trimming bumpstops, they are the length supplied for a reason.  If you let the suspension travel further than intended you can snap the ball joints when they reach the end of travel.  Poly bumpstops are shorter, but also harder.

[Cooperman]

 

Rubber ones will be ideal. If it is for the road I would advise against lowering it much. When lowered, the rubber cone spring does not reach a high enough rate to prevent the suspension hitting the bump stop on bumpy roads, and bumpy corners, and this means that it won't steer as well if you hit a bump in a corner. It will drive better if the suspension can work as intended in terms of geometry with adjustable dampers helping to set the optimum ride and handling profile.

I assume best stick with new genuine rubber cones

 

For a road car the standard original ones are ideal. I use them in rally Minis and they work fine.

I like to drive quickly, well as quickly as the slow old classic Mini will allow, but I never lower a road-going car as with the state of the roads these days the need for good suspension travel is obvious. Lowering a car for the road gives several non-compatible issues. One is the tendency to 'bottom-out' with consequent loss of steering and road-holding and if the dampers are stiffened up to try to reduce this the car becomes 'jittery' on the road as the tyres are not in contact as much as they might be. For a quick-ish road car on mixed surfaces there is a requirement for more suspension travel which allows the rising rate rubber springs to work over their intended range. 

On a race track it is entirely different because the surface will be very smooth.

[1968andyf]

Try using hydro bump
stops on the front as they are more progressive

[racingbob]

Try using hydro bump
stops on the front as they are more progressive

can you fit hydro bump stops to dry top arms

[1968andyf]

Yes the minispares ones. The mounting bracket fits on the shock pin i've used them for years.Give about1/2" clearance when adjusting ride height which is about 3/4" lowered using standard cones

[1968andyf]

Just checked minispares web site part no c-ajj4007 £16.80 with vat

[racingbob]

Just checked minispares web site part no c-ajj4007 £16.80 with vat

ok interesting so if it was lowered touch more you could just file out the holes and move up

 

why should you use these instead I see they do 2 types as well

[1968andyf]

The rubber on these is softer and more progressive so on a fast corner the car rolls onto them but when hitting bumps sill allows the arm upwatd movement. The standard stop is very hard as are the poly ones to lower further i mark the angle it will hit the subframe at and cut a small amount off the rubber

[racingbob]

The rubber on these is softer and more progressive so on a fast corner the car rolls onto them but when hitting bumps sill allows the arm upwatd movement. The standard stop is very hard as are the poly ones to lower further i mark the angle it will hit the subframe at and cut a small amount off the rubber

ok so if I use these cut the rubber a touch

 

but wont the car dip more around corners as its a second car fun b roads

 

don't like that

 

new standard cones spax and slightly lowered

[1968andyf]

If you are only lowering slightly use the stops as they are they will help stop the dip on corners don't set the dampers to hard though

[racingbob]

this is getting an interesting topic

 

are they the same length and the dry ones

 

so if I want to lower touch more than a bit

 

ok to trim them back 1/4"

 

what about the other hydro bump stops