Panthera Build
- Thread starter wwillf01
- Start date
The Panther based one I mentioned in an ealrier post.
So he sent it with a 6-2..... when you get it to idle it’s too lean low to mid... richen enough to get that bike no idle. Top end egt long pulls on pump gets to 1250 on the egt.. I have about 25 gallons through it at this point... I don’t think mine would idle with an 8-3 I would have to choose between an 7-1, 7-0, 8-0, 8-1 .. power jet is a quarter turn out. I know as you go up in size the 2nd number is leaner as you move up in the first number. So maybe a 7-2 would lean the idle enough.
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Ok guys last year was a bust for riding but this year I will have a lot more time. This is where we are at I have swapped the lectron for a 40mm smart carb (I have always had better luck with good tuning on these and it fits wayyy better) still using the fuel pump and moving the gas back to the normal dirt bike tank and off the tunnel. I really did not like it on the tunnel I think this is a personal preference. I changed the front springs to .72 and supercross valving. Now I just need snow if we don’t get any I will be driving somewhere this year! But don’t worry even with being I really rich this thing was a beast!
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looks good ...what length is your ARO and what year? any mods to it? And what size is that gas tank? thanks.
That looks great. I'll stick with the Lectron until I hear if you liked to the smart carb. What PC silencer did you use? Tucking the track in that close would help a lot with the handling but it looks like a lot of fab went into it.
Last spring I had a couple of teeth on my clutch gear fail. One of the teeth went under the shift mechanism so when I down shifted I noticed the odd feel and it put a hole in my side case which stopped me from doing any other damage. The replacement gear Panthera sent me was completely different and much stronger. The one that failed looked like the back side was machined too close under the gears. Panthera mentioned that there is a machined bearing recess in the side case that supports the crank end at the primary. The bearing is a non-sealed 6906. I put one in since it looks like it will help.
While figuring all this out, I rebuilt the top end. The plating came off between the exhaust ports and the piston skirt had started to fail. I am guessing the failing skirt caused the plating issue. It looks like I need to change pistons more frequently.
I got it all back together late spring and it ran great. Just need some snow now.
Last spring I had a couple of teeth on my clutch gear fail. One of the teeth went under the shift mechanism so when I down shifted I noticed the odd feel and it put a hole in my side case which stopped me from doing any other damage. The replacement gear Panthera sent me was completely different and much stronger. The one that failed looked like the back side was machined too close under the gears. Panthera mentioned that there is a machined bearing recess in the side case that supports the crank end at the primary. The bearing is a non-sealed 6906. I put one in since it looks like it will help.
While figuring all this out, I rebuilt the top end. The plating came off between the exhaust ports and the piston skirt had started to fail. I am guessing the failing skirt caused the plating issue. It looks like I need to change pistons more frequently.
I got it all back together late spring and it ran great. Just need some snow now.
So we are going with a 50 hours piston change? How many on yours? Also at the beginning I did have an issue with bolts coming loose in the clutch basket but went through and retorqued everything we could access. I am looking forward to riding it this year. As far as fab I had a lot of help from friends to make this thing come together! On the stand the Smartcarb already sounds a feels wayyyyy better. We just got our first snow storm so I would say mid Jan will be the first it can go out at this rate.
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I think 50 hours would be pretty safe. It was the original piston and I went well over 50 hours. They changed to piston design so it may last longer. I might limit myself to 50 gallons of fuel to change it too.
