20200315152706 1 #101 how not to straighten welded flywheel 2011 twin cam crankshaft truing harley by tatro machine Tees, Hoodies, Hats, Parts at : tatromachine.com
ah good to know about the induction hardening/blue color is normal. new to harley ect and had my new to me 2000 fxdwg apart for some lower compression pistons and stock efi heads. they had this bike setup at 12.5:1 with a woods tw6h cam set. now its 9.2:1 and a fueling 525 cam.
Back when twinkis first were thrust upon the people. And needed fixed left and right. The new twinkies are not like the twinkies we had when we were kids, those lasted forever.
truing those crankshafts is a 3 step process: (1) after pressing the forgings together on crankpin. (2) after pressing interference plugs into pin ends. (3) after welding the pin to forgings. its no more difficult to move them after welding than before..
great, that sounds super simple. lets see you do it. welding kills the press fit of the crankpin which weakens the hole assembly. you only add strength if the welding is stronger than the press fit that you lost. the truning goes all to hell too. tatro
Tatro why do some shops do a Timken conversation on the m8 and other shops don't because they say the case breaks what's your option. do you have to do conversation with high horsepower builds
that is unless you take them apart and fix them. the manufactures are not the only ones that can assemble a crank. the problem is that they don't know how to rebuild anything. but they can take a 75.00 crank and sell it for 1400.00 tatro
welding is a bad idea. it pulls the material away from the crankpin reducing the critical, interference fit surface area needed for rigidity.. you see how easy it was for them to influence the crankshaft to rotate with less runout?..
the stroke lengths are determined by the centers. whats not accurate are the splines that are broached on to sprocket shaft independent of a centerline or center point. indicate close to wheel supported and rotating on a set of dead bench centers..
@@TatroMachine yeahaa... But sooner or later it will come back with double force of damage... I twisted wheels in my private 2003 RK, 98 build. 90hp was enough to do it. Now building all bore 107 with s&s wheels and 4.125"bore jugs. Keep doing good job Tatro. Like your work style and knowledge....
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The knowledge this man has is incredible! He has an answer and tool for every issue or problem.
THIS GUY IS A WEALTH OF INFORMATION. GOOD VIDEO
Excellent work. You are obviously very experienced!
Amazing to watch. Experience matters.
Nice job with a lot of experience. After each alignment, the crank also wants balancing?
ah good to know about the induction hardening/blue color is normal. new to harley ect and had my new to me 2000 fxdwg apart for some lower compression pistons and stock efi heads. they had this bike setup at 12.5:1 with a woods tw6h cam set. now its 9.2:1 and a fueling 525 cam.
now you can ride it anywhere and have a quite valvetrain. it will late way longer too.
tatro
I wish Ichiban Moto worked on Harleys too. Id love to see his method of doing this
Reminds me of back in the day ✌️
that would be yesterday.
tatro
Back when twinkis first were thrust upon the people. And needed fixed left and right. The new twinkies are not like the twinkies we had when we were kids, those lasted forever.
Just curious what would this cost to have done?? Love the channel
I need some flat head 80 wheels fixed
I thought after 2002 twin cam didn't use timken bearings. I'm guessing this one had a kit put in it? excuse my ignorance.
Yes this had a Jim's timken conversion
no, it was an s.e. one. that was made by jims.
tatro
@@TatroMachine s.e. ?
@@whatyoumakeofit6635 Screamin’ Eagle, Harley’s in-house hot rod parts shop.
Harley davidson are the yugos in the motorcycle industry
Thanks for sharing. So my logic says you are flexing the wheels and the crank pin. Are we not to worry?
flexing yes, bending yes, straightening yes. that about covers it.
tatro
Tatro Machine ok. Just making it happen. I like how you just keep going on a project.
truing those crankshafts is a 3 step process: (1) after pressing the forgings together on crankpin. (2) after pressing interference plugs into pin ends. (3) after welding the pin to forgings. its no more difficult to move them after welding than before..
great, that sounds super simple. lets see you do it.
welding kills the press fit of the crankpin which weakens the hole assembly. you only add strength if the welding is stronger than the press fit that you lost. the truning goes all to hell too.
tatro
"welding kills the press fit of the crankpin".. thats exactly the point im attempting to make..
My friend thinks those welds broke on his. Lots of vibration he said
twincams don't vibrate, they are rubber mounted. that is what everyone says around here when you bring up balancing.
tatro
Tatro why do some shops do a Timken conversation on the m8 and other shops don't
because they say the case breaks what's your option. do you have to do conversation with high
horsepower builds
sell it and go buy a good big aftermarket evo motor. way stronger and it will last.
tatro
Nice. Wen rod bearings or rods need to be replaced, so do the flywheels by default. Some "improvement".
that is unless you take them apart and fix them. the manufactures are not the only ones that can assemble a crank. the problem is that they don't know how to rebuild anything. but they can take a 75.00 crank and sell it for 1400.00
tatro
@@TatroMachine roger that
ｉ ｗａｎｔ ｔｏ ｇｏ ｆａｓｔ
Yeah, but cruisers like Harleys place emphasis on low-end torque lel
that might be for your bike but not mine. spin the hell out of it and lets get moving.
tatro
@@TatroMachineFair enough.
Panheads cranks are a lot easier to fix than the twin cam crap
yes, they are made to be rebuilt. twincam cranks are made to toss into the trash.
tatro
welding is a bad idea. it pulls the material away from the crankpin reducing the critical, interference fit surface area needed for rigidity.. you see how easy it was for them to influence the crankshaft to rotate with less runout?..
But you don’t like to complain ha ha
WHY?? align Crank with Centres? Inaccurate should use Bearing Journals. How NOT to do it is right!
the stroke lengths are determined by the centers. whats not accurate are the splines that are broached on to sprocket shaft independent of a centerline or center point. indicate close to wheel supported and rotating on a set of dead bench centers..
Replace that shit by s&s wheels....
that is what i keep saying too but they don't want to spend the money.
tatro
@@TatroMachine yeahaa... But sooner or later it will come back with double force of damage...
I twisted wheels in my private 2003 RK, 98 build. 90hp was enough to do it. Now building all bore 107 with s&s wheels and 4.125"bore jugs.
Keep doing good job Tatro. Like your work style and knowledge....
@@Darlovo private 2003 rk ? What is that ?
@@whatyoumakeofit6635 his personally owned 2003 Road King
Quit talkin, just fix it...
After 5 video, I do not want a Harley. They seem to be absolute sht!