Hi all went rideing last weekend and noticed my quad was getting loud. So when I got back to the shop and was looking it over I found a crack in my hpd pipe about 6 to 8 inches out from the head most of the way around the pipe[img]i/expressions/face-icon-small-shocked.gif[/img]. I have all the correct mounting springs and rubbers has anyone else had the prob? if so how did you stop it?
Im thinking that maybe leaveing the spring up front that goes to the frame off might help or should I add more mounting points?????
The pipe is only a few months old[img]i/expressions/face-icon-small-sad.gif[/img].

Jeff

 

I would first try to contact HPD or Rick, depending on where you got it.....most likely just hpd, and see if they will cover it, or if they have any suggestions.

 

I'd nearly bet that they would take of ya. Especially if you bought it from Rick.

 

i agree

 

Well I did buy it from rick I guess if no one else is haveing any trouble with theres maybe I got a a bad one the weld is kind of ugly where the crack started.
I will call rick and see if he can get a replacment from HPD under warrenty if there is any.I don't want to see rick pay for it after all he dident build it.

Jeff

 

u only run 43 gram weights jeff? thats lighter than stock isnt it?

 

Yes stock is 48 but I have ground these weights in such a way that they actually have more weight out at the tip then the stock 48 but are lighter overall this gives me the higher stall I wanted with the same shiftout as about a 55 gram weight.The heavy tip also offers the belt grip of a heaver weight.
and I now have a artic cat orange spring 143-295 Lbs. It hits hard off the line I can't lean over the bars far enough to keep the front down if I full throttle it[img]i/expressions/face-icon-small-smile.gif[/img] After many hours and $$ I got the clutch right where I want it it absoloutly never lacks for power in any riding condition the custom gind on the weights was the final answer it shifts out hard and back shifts perfect[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img] With the custom grind once it shifts out a bit I can actually back off the throttle to below stall rpm and cruise because the heaver tip portion of the weight is farther from center giveing it more centrifugal force then at idle if that makes sense.
So I have the benfits of high stall (no bog, takes off on steep hills no prob, wheelies,etc) WITHOUT the down side of haveing to cruise down the trail at half throttle just to move. It's a great setup but took a helluva long time and trial error to figure out.

Jeff

 

That last statement says it all. A lot of time and trial and error. Mudmaster, it's all about the effects of inertia and centrifugal force of the weights reacting to engine speed. Depending where you put or take away material from the weights determines how they act. It takes some knowledge and a little guts actually to start modifying the weights. Usually a second or third set is needed before succeeding.Good job Jeff![img]i/expressions/face-icon-small-happy.gif[/img]

 

Thanks Bubba It did take me 3 sets of weights to get it right. kind of $$$ but well worth it in the end had to buy a scale also. I made a fixture to hold either end of a weight so I could tell how much more or less than stock was on either end of the weight.
I screwed up one set of weights so bad they wouldent swing out and engauge no matter how high the rpm[img]i/expressions/face-icon-small-shocked.gif[/img]
You know its bad when the threads that hold stuff together start wearing out from being apart so many times LOL.. and my quad is only 10 months old[img]i/expressions/face-icon-small-shocked.gif[/img]

Jeff

 

Good info Jeff. Thanks!