This is a read-only archive of the old Madabout Kitcars forum. New posts and replies are no longer possible, but every thread is still here to browse and read.
I finally got to put a wheel on as couldn't fit it with Z3 Sill in place, I'm looking for confirmation that the small metal tab (shown in picture below) can be bent away from wheel so I know that they will fit ok, else have to go for smaller tyre which I don't really want to do.
What is it with everyone going for extra large wheels and tyres ? The real Ferrari never had doughnut style tyres , they were quite modest. The red demo car by new body has massive rubber too , it just looks too much imo.
Ultra low profile doesn't look right either , then there are problems trying to get it all under the arches without it rubbing .
I guess it's down to personal preference, sorry but I'm not being rude however if I'm spending a shed load of money and time on building a car then I'll fit what I like, which may not be to everyone's taste, which is fair enough. If you google the Le Man 1961 no.14 car with the blue stripe the tyre walls are huge, this is the look I want. However I did spend a lot of time making sure these tyres are W rated as the ones on the car were this rating. I've got a massive issue with speedo calibration with this set up though, thinking of ways around that currently. As have 17% difference. 3.0 engine should have enough power to cater for difference, I think if I had a 1.9 it would struggle possibly. It looks like the easiest solution is to change the speedo gauge numbering format to a z3m set which pretty much matches the setup change, but I need to do more research and will be going over a previous change already as I have swapped to cream gauges already.
... I've got a massive issue with speedo calibration with this set up though, thinking of ways around that currently...
For accurate calibration (at least to 70mph) I can recommend using a cycle speedo which triggers using a magnet on the wheel rim.
I ask for at least one clip-on weight to be used on the inner rim by the tyre shop. The magnet clings to that, helped by epoxy or filler.
The accuracy is only dependent on how you measure the rolling circumference of the wheel (in mm !!!)- chalk tyre and road, roll car one wheel rev, chalk road again, measure distance. And that will change as the tyre wears obviously.
I guess it's down to personal preference, sorry but I'm not being rude however if I'm spending a shed load of money and time on building a car then I'll fit what I like, which may not be to everyone's taste....
Spot on! This is the reason that I love these type of kit cars, none of them will be the same with everybody putting their own ideas into each build which adds character. I think that it would be very boring to see everybody build exact replicas and since the originals vary massively in so many ways, this would not be accurate in any case.
As have 17% difference. 3.0 engine should have enough power to cater for difference, I think if I had a 1.9 it would struggle possibly.
Your car must feel much more sluggish with the new wheels and tyres - due to their additional mass and because you need to gain almost 40lbs ft of torque to make up for losses due to the taller gearing that they've introduced.
ericholm wrote:
It looks like the easiest solution is to change the speedo gauge numbering format to a z3m set which pretty much matches the setup change, but I need to do more research and will be going over a previous change already as I have swapped to cream gauges already.
Your car must feel much more sluggish with the new wheels and tyres - due to their additional mass and because you need to gain almost 40lbs ft of torque to make up for losses due to the taller gearing that they've introduced.
Could you not use a GPS speedo on your phone?
Not sure yet as haven't had all tyres fitted onto rims in case it doesn't look right or fit into the arches without some reasonable gap. Will let you know if/when kit is on with wheels and take it for a drive. GPS on phone is an option also, would need to mount it somewhere, as would be much larger that Cycle speedo option which could be more discrete.....hmmm, thanks for the suggestion it is welcome, Iv'e also asked on the Z3 forums and there are some interesting ideas, specifically around dividing the signal from the speed senor, etc.
which I don't really want to do.
If you google the Le Man 1961 no.14 car with the blue stripe the tyre walls are huge, this is the look I want. However I did spend a lot of time making sure these tyres are W rated as the ones on the car were this rating. I've got a massive issue with speedo calibration with this set up though, thinking of ways around that currently. As have 17% difference. 3.0 engine should have enough power to cater for difference, I think if I had a 1.9 it would struggle possibly. It looks like the easiest solution is to change the speedo gauge numbering format to a z3m set which pretty much matches the setup change, but I need to do more research and will be going over a previous change already as I have swapped to cream gauges already.