Hi All,

I got my self a Venom Speed Meter for my Hyper 7.

I have fitted it and got it working fine. Apparently I have gone 43Mph onroad with onroad tyers.

However the problem is the magnets keep coming off. I have now lost both that came with the kit and am trying to find some more.

I have glued them on with super glue and then wrapped tape round it and I have even glued it on and then put heat shrink plastic over it. But it still comes off.

I am mounting the magnet on the socket that is a connected to the back diff, where the drive shaft goes in to. (Sorry if this it not clear, I will try and get some pics soon) One thing that has been suggested to me is that, that joint will get hot and super glue melts when hot. So the magnet come loss.

Has anyone got a Hyper 7 (or similar buggy) and installed a Venom speed meter on it? If so please please can you tell me (or show me with pics) where you have mounted the magnet.

Thanks very much for you help.

Matt.

unfortunately you wont get an accurate reading with those on a buggy as all the shafts rotate at different speeds because of wheelspin. Though it would be closer to the truth on-road.

only way you coud get a vaguely accurate reading was off the spur gearbecause it the only thing that isn't effected by diffs, but as grahama89 says, wheelspin good fun but not much good for speed readings

i agree with that, good for road readings but not off-road.

What i did, as i didnt want to drill the spur gear. I put the magnet on the front drive shaft. You have that problem as where you are putting it, it has a large cetrifugal force due to the circumferance. Basically it has to travel faster to make one rotation of the centre compared to something with a smaller circumferance, even though they have the same rpm

all i use is elecrical tape and it hasnt fallen off since i got it. I wrapped it up nice and tight so the bulge of the magnet protrudes almost streaching the tape

This theory is probably not exactley right, but its true and works.

Also as you mounted it on the bone, there may not have been enough distance for it too count correctly.

as in the magnet is detected when it's on both sides of the bone, to clarify that[8D]

i put mine on the cap joint and put super glue on and it has never came off

why not put it on the center diff case

you mean the center diff case or the spur gear?

If you could manatise the center diff Grub screw that would be Ideal.

I think you mean magnetise, not manatise if it's stell you can run a huge electric current through it, but something that small would probably melt with the resistance or you can run a magnet along it the same direction over and over again may take a couple of hours to get it up to strength


While it's being mentioned, whats that for? is it to drain oil or bleed it or something[sm=confused.gif]

yeah, ithink it is for bleeding, though wouldnt be much good if you use grease rather than oil.

Also if you tried to replace it with the magnet be sure to secure it properly otherwise you can imagine the mess in the car.....lol

Magnetizing the grub screw would be an excellent idea, if you know how to do it. Do you have to pass a current through it or something??

if it's steel you can if it's anything else you would have to look it up

It's there so you can remove the pin from the outdrive cup shaft. Oh and it's STEEL not stell ( Touche). The fact that it is steel should be enough to justify the hours of draging to MAGNETISE it.

You do mean the screw in the diff case don't you, because I dont see one on the outdrives, That looks rather stupid actually I correct your mistake and then three words later, you get some solid stell I'm not going to edit though it would confuse everybody and then we'd get two pages of 'what are you on about'[8D]

BTW how many times are you going to change your sig today and how do two opposable thumbs allow you to read English?

They allowed the person who designed the first computer to hold the pencil and draw it. I think you can work out the rest.

The grub screw I'm refering to is in the diff case side at the other end from the spur gear (this is only on the sandard diffs, not Spiders or Torsens).

Can't see a pin that the grub screw goes on to though and when I screw mine in all the way it locks the diff action[sm=confused.gif]

You dont screw it all the way in. Just so it's flush with the case. It's only a blanking screw so the diff dont leak and for access to the pin.

Item 19004 to get to the pin that retains 19006

OK i was wrong, its not for bleeding. (that why he changed his motto) but if its there to hold that part in place, i cant see how it would allow it to move, without turning the whole thing. It would as mk999 says lock up the diff.

It's not to hold it just to stop it leaking, sort of what you said, and to provide access to the pin

ahhh, with you now.