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I remember them. Get some furry dice to hang in the Ford Capri as well.an oversize valve cap on the end of it, normally dice shaped or some glow-in-the-dark
Not quite a jublee clip as there is no worm drive but a vast improvement.Or as I did, x2 straps (essentially big jubilee's) with rubber blocks: £7
That explains a lot and why I felt safe with mine.. here is a pic of the one's I have in aluminium and 90 degrees.. bolted from the inside.Pete.L wrote:Sorry Hawk,8541Hawk wrote:I would still like to see a failed Al stem or at least a link to one.
The way I see it, first you need to figure out the tensile of the Al alloy used and the the weight of the small tube sticking out.
Then with that info you could figure out how fast the wheel would have to spin in order to cause deflection of the tube.
I would guess the RPM needed to cause the tube to bend would be higher than this bike is capable of producing.
I should have got back to this thread sooner. I had no idea it would be so controversial
Firstly, there was a craze over here a little while ago to add a 90 degree valve stem to the existing rubber stem. Then you would get some pillock put an oversize valve cap on the end of it, normally dice shaped or some glow-in-the-dark variety and that was what a warning was published about .I've not heard any thing about replacing the whole stem with a metal one of any material. In fact, metal, whether it be steel, aluminium or phosphor bronze is normally the safety valve of choice.
I hope this clears things up and all those irritable formula which have been flying around you head will subside and you can let your calculator cool down.
Once again,
Humble apologies
Pete.l
Cheers KevKev L wrote:This is mine mounted on the left spar under the seat -
that's where mine is going, when I eventually get back in the cave to do something 
I shall be leaving Lloyds after this cuppa and see what these cams really do 
Nothing much, usually.Ckennedy wrote: and see what these cams really do
first day out on the bike with the "rogered" forks on, can't chuff in wait!!!
No worries and no need to apologize for anything, it makes perfect sense nowPete.L wrote: Sorry Hawk,
I should have got back to this thread sooner. I had no idea it would be so controversial
Firstly, there was a craze over here a little while ago to add a 90 degree valve stem to the existing rubber stem. Then you would get some pillock put an oversize valve cap on the end of it, normally dice shaped or some glow-in-the-dark variety and that was what a warning was published about .I've not heard any thing about replacing the whole stem with a metal one of any material. In fact, metal, whether it be steel, aluminium or phosphor bronze is normally the safety valve of choice.
I hope this clears things up and all those irritable formula which have been flying around you head will subside and you can let your calculator cool down.
Once again,
Humble apologies
Pete.l
Don't ever stop. I enjoy it8541Hawk wrote:Sorry to offend with my quick calculations.... it's just how my mind works........
Probably one of the safest valve set ups on heregl_s_r wrote:That explains a lot and why I felt safe with mine.. here is a pic of the one's I have in aluminium and 90 degrees.. bolted from the inside.
That puppy's not going to cause any problems for a very long time 
