Originally Posted by
Gizmatron
NO the 2072 is every bit as strong and well made as the 2047..reinforced stinger and nice thick looking chrome finish.only time will tell of course but it feels solid and not light and flimsy..
OK well so how does the 2072 run on a MM5 7 port in a buggy..EVERYONE GET ONE is the answer..oodles of power everywhere..lovely crisp scream as well..did two timed tankfuls today..7mm insert (still wheelspins at will and will lift the front wheels momentarily out of corners) in a kyosho mp777 buggy..OK perhaps not quite at full race scream in the technical sections as my only crash collector is my 4 year old son but full speed everywhere else and I got 12min 1sec and 12min 11sec...I'll do a couple more tomorrow as saturday the track should have enough people to act as collectors for proper insane driving..but 12 minutes is awesome..tempted to try a smaller insert but I don't see it breaking 15 min which is what it would have to do to remove a fuel stop in semi finals etc so why bother..racing near Rouen on sunday on an unkown track but I'm told it's smooth,very fast and not many jumps..even more reason to stay with the 7mm..
One thing I forgot to mention..Previous to today I'd begun having idle/stalling problems...not often but enough to be irritating as they always happen at the worst moment in a race.I set the idle gap to 0.8mm as usual reset the needles to hsn flush and lsn in 1.5t but I was having to constantly tweak the mix..maybe only an hour or two but it just wouldn't stay steady..so I took after reading a few recent posts here I took out the hsn for a look...OHMYGOD.. full of shite!! not sure if it was flaking from the o-ring or just dirt...removed carb for airline action and there was some similar crap around the o-ring in the base of the carb hole in the crankcase so I'm guessing the o-rings are degrading..cleaned up added a touch of silicone sealer and now it's rock steady again..Massive I'll be ordering some of your new nitrile o-rings along with the GO plugs real soon..
Thanks for the info on the 2072 Giz. Sounds like another sweet GO pipe.
Nothing but good reports so far.
That blocked HSN due to the flaking O rings is quite a common problem it seems. Hard to track down too, as it can be very itermittant. That's why I changed all my needle O rings to fuel tubing ones. Got some of Marks new nitrile O rings on order though, as they sound like the ultimate cure

Better stock up Mark, there could be a rush on those O rings