Well... Guess its time for engine work
If you have any doubts, remove them, check the threads (both male & female) and use blue thread locker (medium) and re-install them to proper torque for your model. (for most models this is 40-60 inch lbs.)
It is very sad what happened to Dynam1tes engine, and we are happy he was not hurt.
He emailed us this morning and I called him and we spoke. It has not been determined yet why this happened, but it is not a design flaw in the A/C.
This is a common design and it is still the one used by S&S and most performance manufacturers.
We are going to work with Dynam1te to find out what happened, and help him anyway we can.
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DKCustomProducts.com
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
They are 1/4-20. However, you do not need to safety wire them. If the threads in the throttle body/carb are good, and you have used medium blue thread locker on them and torqued them to spec, they will not come loose.
If you have any doubts, remove them, check the threads (both male & female) and use blue thread locker (medium) and re-install them to proper torque for your model. (for most models this is 40-60 inch lbs.)
It is very sad what happened to Dynam1tes engine, and we are happy he was not hurt.
He emailed us this morning and I called him and we spoke. It has not been determined yet why this happened, but it is not a design flaw in the A/C.
This is a common design and it is still the one used by S&S and most performance manufacturers.
We are going to work with Dynam1te to find out what happened, and help him anyway we can.
If you have any doubts, remove them, check the threads (both male & female) and use blue thread locker (medium) and re-install them to proper torque for your model. (for most models this is 40-60 inch lbs.)
It is very sad what happened to Dynam1tes engine, and we are happy he was not hurt.
He emailed us this morning and I called him and we spoke. It has not been determined yet why this happened, but it is not a design flaw in the A/C.
This is a common design and it is still the one used by S&S and most performance manufacturers.
We are going to work with Dynam1te to find out what happened, and help him anyway we can.
Nuts and bolts only fall off when they're improperly installed or maintained, simple as that. This is hardware that should be checked anytime the air cleaner is off for service, which should be often. Unless something actually failed/broke off and went through the motor the manufacturer of the loose parts is irrelevant. Some SE high flows use this design also btw.
Road Warrior
Joined: May 2010
Posts: 1,718
Likes: 15
From: Bay area, CA
Dude that sucks! I've heard this happen with a Arlen ness big sucker also. I was told a bolt broke, not worked loose but the end result was obviously the same. Sorry about your troubles man, good luck whatever way you end up going.
Thread Starter
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Road Warrior
Joined: Sep 2012
Posts: 1,252
Likes: 7
From: SLC, UT
Thanks guys for all the input. What happened to my bike is a freak accident, not a design flaw by DK. What sucks is I just had the filter off for a cleaning and I neglected to check the tightness of those bolts while I was in there, all of it could have been prevented by a little extra time spent checking things out.
As far as my plans go, I'm still waiting to hear back on what's found in the cases. One thing I know is even with a scope they couldn't see the other half of the piston. But the flywheel seems to be in good shape...
Chances are I'm going to be send the bottom end to dark horse for added reliability. I'm also looking into a revolution 107 kit for the jugs and pistons. Luckily I know someone with stock heads he isn't using that I'll be getting, and I'm going to be calling Dave Mackie in the next day or two and see what he can do with em for what I'm planning...
And that'll about do it!!
Any one out there have a similar build?
As far as my plans go, I'm still waiting to hear back on what's found in the cases. One thing I know is even with a scope they couldn't see the other half of the piston. But the flywheel seems to be in good shape...
Chances are I'm going to be send the bottom end to dark horse for added reliability. I'm also looking into a revolution 107 kit for the jugs and pistons. Luckily I know someone with stock heads he isn't using that I'll be getting, and I'm going to be calling Dave Mackie in the next day or two and see what he can do with em for what I'm planning...
And that'll about do it!!
Any one out there have a similar build?
Outstanding HDF Member
Joined: Dec 2012
Posts: 2,557
Likes: 235
From: Texas
While in theory you may feel that there is no need to use lock-wire, it can not hurt to go this extra step either...there is a reason lock-wire is pretty much standard in aviation components, and that reason is that a catastrophic engine failure like this is much more serious...there ain't no putting it in neutral and coasting to the side of the road and calling a wrecker...
For whatever the reason, whatever or whomever is at fault, this could have initiated a deadly chain of events. I am running a carb and there is no hardware that can go down my intake unless it comes apart...but if it were FI and I were running one of these things on my ride, it would be coming off muy pronto until the problem was resolved.
...or I would take the extra step and safety-wire the bolts and enjoy the peace of mind it affords...just say'n
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Stellar HDF Member
Joined: May 2009
Posts: 2,066
Likes: 97
From: Northern VA
Can someone provide a picture of the bolts in question installed so I can see how this would happen. . .?
My AN Big Sucker has a cover bolt. Behind that, there are 3 small bolts that thread into these long threaded 'tubes' with I believe hex heads on the tubes. The tubes then in turn thread into the backing plate. I'm assuming S&S, SE, etc use a different design.
My AN Big Sucker has a cover bolt. Behind that, there are 3 small bolts that thread into these long threaded 'tubes' with I believe hex heads on the tubes. The tubes then in turn thread into the backing plate. I'm assuming S&S, SE, etc use a different design.
Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
Hope the rebuild goes well. I think it's time for an upgrade.
Earlier this year someone else had a very similar issue and wrote about it here on the forum. I searched and couldn't find that thread. It was about the same thing, an air filter bolt being sucked into the motor.
Earlier this year someone else had a very similar issue and wrote about it here on the forum. I searched and couldn't find that thread. It was about the same thing, an air filter bolt being sucked into the motor.