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hms

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Posts posted by hms

  2. The motion of wheels

    in Car Related Photos/Videos

    Posted

    I'm too thick to understand, but:

     

    "but its instantaneous velocity varies between zero, when it is touching the ground, and twice the axle velocity as it passes through the half-way point."

    You cannot have one part of the wheel velocity at zero as it touches the ground and another part at twice the axle velocity as it passes through the half way point. If one is zero then the other should be zero!

     

    So what you are saying is that the lower portion of the wheel rotates to the rear then has the forward momentum of the axle subtracted from it.

    The top of the wheel rotates forward and then has the forward momentum of the axle added to it.

    Does that make sense?

    I am thinking off the similarity of the doppler effect heard in police sirens, where the pitch changes as the car approaches and the goes away?

    h

  4. Why would anyone want to do this?

    in Non-Car Related Photos/Videos

    Posted

    If you want something that shows bullfighting at it's worst, to show people what it really is about then Chris Rea wrote the music to a short film about it, "Bullfighting", but it comes as part of the Santo Spirito CD set with inclusive DVD. Done by an anti bullfighting group.

    Towards the end of the film it gets very horrific as they kill the bull, whilst the "humans" seem to have no feeling for what has just happened.

    Not a video for the kids!

    h

  6. Tony's Lamborghini Countach

    in Car Blogs

    Posted

    Tony,

    get the engine/mechanical bits sorted first. The last thing you need is to have the bodywork sorted and then drop a spanner on it, or scratch it from the buttons on your overalls.

    Plus it gives you more time to choose, paint, wrap; paint, wrap; wrap, paint!

    Is the car to be used for WIM sponsorship or is the car personal? If WIM what about a matte version of the WIM blue?

    h

  14. Oh no.......

    in Car Related Photos/Videos

    Posted

    Only 160 miles?

    Built in 1990?

    Off the road since 1992!

    Steering rack loose, probably some other things as well?

    That is going to be a whole pile of problems!

    I suspect those photo's are from 1990/2 and not recent... 'benefit from a respray'.

     

    h

  17. Best coilovers for NB MX5

    in Suspension

    Posted

    Hi guy,

    You seem to have tried everything apart from Gaz Gold!

    First off, the disclaimer, Gaz has sponsored the Hornet, the PlanetMX5 track car, and has a set of the older Gaz pro shocks which have been rebuilt as Gaz Gold Pro. supplied foc.

    I also have a set of Gaz Gold on my own supercharged mark 1.

    On the Hornet it is set up with tonys track setting and the shocks turned up harder than the road settings.

    Corners nice and level, and is great on track, we dont bother to change the suspension settings now, too lazy, so she rides hard on the road, about the same as the bilstiens I had.

    On my own car, fast road/track settings with the suspension set to slightly harder, so have a balance between comfort and handling.

    Regarding noise, you will hear more of these complaints as there have been more sold. When there have been problems Gazman has been accessable to resolve problems.

    H

     

    Hi there,

     

    My first post on here so nice to meet everyone, you seem like a friendly bunch!

     

    I currently drive a W reg 2000 Mazda MX5 1.8iS with the Torsen LSD and am looking for some better coilovers. This is my third MX5 and I'm hoping to do a 'novice only' trackday at Oulton Park in September, I did the same in my old Integra Type-R and it was brilliant fun. But I'd like to upgrade my coilovers before I do and get the geo set up properly as well.

     

    Over the years I've had about 6 different types of aftermarket coilovers on my MX5s and am still searching for the magic combination of ride comfort and fast-road/track responsiveness. In total I've had the standard OEM suspension, the standard OEM Bilsteins, Performance 5 'pure drive', HSDs, Tein Control Master Flex, Performance 5 'Sport Drive' and lastly Koni Sports (yellow) with Tein S-tech springs.

     

    I liked the 'Pure Drives' but the outer dampening adjusters seized up after just a few months. Up until very recently I was driving around on their follow up coilovers = Performance 5 'Sport Drive' which were very good but still have NVH issues which Phil is working hard to resolve but it's taking forever and I'd rather have a niggle-free solution right now.

     

    The HSDs weren't bad but began to rust quite badly after just one month, plus they wouldn't go high enough for my ideal ride height of 13" front 13.5" rear (wheel center to arch). The TEIN flex offered more height adjustability but seemed to be quite a harsh ride; even after I backed the dampening off considerably, I think they must've had quite high spring rates and the ride was still a bit uncomfortable.

     

    I like the Koni Sport/Tein S-Tech combination as the ride quality is almost as good as stock on full soft, but the responsiveness doesn't seem to be there. Or maybe I need to just wind up/stiffen the dampening a bit? I heard that they're a digressive shock though and that at higher speeds they work less efficiently though; although I'm definetely no expert, it seems most manufactures are now producing monotube instead.

     

    I did read somewhere that it's better to have a twin-tube system that's specifically valved/adjusted to suit that particular car rather than just jumping on the Mono-Tube bandwagon when the valving isn't correctly setup for your car?

     

    I liked the sound of GAZ Gold Pros but after hearing stories of poor build quality and the same knocking problems on several different MX5s I think I'll steer clear.

     

     

    The only ones I've not really tried (well the sub £700 ones anyway) are Meister R and BC Racing. Both of which have separate height/spring preload adjustment a side of which I believe is less suspension travel on the back, which is already quite limited on MX5s - apparently even stock MX5s ride on the bumpstops fairly regularly, that's why Mazda made them progressive so that they almost act as a second spring?

     

    I think I read somewhere that Meisters are just rebranded BC Racing coilovers anyway and that they're made in the same factory in China? But then again Meister claim to have made several improvements over the original design e.g. adding an extra 10mm of travel to the rear shocks, outsourcing/using Japanese bearing inside which are stronger than the Chinese stuff? And they have increased the ride height adjustment so you can actually get them upto 13inch front 13.5inch rear unlike the HSDs (not sure if BC Racing go this high).

     

    I'm the first person so admit I'm not an expert (hence coming on here) but feel like I know what I want, just not sure which to buy. I'm prepared to change my coilovers once more, but after that I don't want to be having to take them off again, etc.

     

    Which coilovers qould you guys recommend? Which would WIM recomend?

     

    I basically want a ride height of 13inch front, 13.5inch rear, something that has adjustable dampening. Something that will ride bumpy British B roads well as my car is my daily driver, but also something that will be fairly epic on track..... do such coilovers exist?

     

    Appreciate your help chaps, don't want to end up buying the wrong ones again ;)

     

    Thanks in advance

     

    - Guy

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