Ironhead Divorced Ironhead project.

[Kmanator]

Originally Posted by brianbbs67

How is the oiling of the primary chain done?

I will periodically squirt 90 wt oil on it just like the drive chain to the rear wheel.

[StonesCycles]

[QUOTE=Kmanator;5695060]Thanks man!...The motor sprocket was the key to the puzzle for me as well to get the sporty 35 series 3 row chain to the big twin 428 series double row chain to connect to the big twin trans..What I did was mill down the sporty motor sprocket in to a "Hub' and then press fit with a .008" interference fit into a shovelhead compensator sprocket,After the offset was established it was welded together.For my build with the late model [Twincam]five speed trans I used a .500 offset final drive sprocket to get the sweet spot between the the motor sprocket,82 link primary chain and the final drive 530 non O ring chain.

Hell yeah man! That's going to be a huge help! Thank you. I'm stoked for mine. One of these days I'll post up a build thread for mine. I just finished the engine today.

[brianbbs67]

Originally Posted by Kmanator

I will periodically squirt 90 wt oil on it just like the drive chain to the rear wheel.

I could be wrong, but that chain was made to run constantly thru an oil bath. The occasion it needs to be oiled is always. Maybe you could rig up a total loss oiler?

[Kmanator]

Originally Posted by brianbbs67

I could be wrong, but that chain was made to run constantly thru an oil bath. The occasion it needs to be oiled is always. Maybe you could rig up a total loss oiler?

Yes,Primary chain is a duplex vs.A roller chain like the rear...History shows they last approx 5000 miles running open,Rain being the culprit of the longevity.At $20 bucks a pop for a replacement I consider a new chain every season as a consumable.

[Berniebuell]

What would you guys recommend as the best/easiest big twin tranny to use with a divorced ironhead engine. I am in the early stages of ironhead with the tranny hacked off. Thanks

[Berniebuell]

What is the best big twin tranny to use with a divorced tranny ironhead ? Range of years ?

[Kmanator]

A 4 speed kicker from a big twin non rubermount would be the most compact size-wize next would be a softtail 5 speed up to 1999 before the twincam motors[HD bolted the trans to the motor as a "Unit"] The softtail 5 speeds have better spline clutch basket shafts and superior electric starters.My build I used a 2002 Twincam Softtail 5 speed trans and cut the bolt flange off the trans case and got creative with the fastening system to bolt it to the adjustable trans plate that through bolts to the frame.I do have a Kicker Kit for this trans that will be installed @ final assembly.

Still making progress,,,Another set of bars and re-did the rear brake pedal correctly to "Pull" the brake shoe lever instead of the longer push pedal I had....



Here is a shot with the "Rabbit Ear" bars I made to try for the feel.

[url=https://imgflip.com/i/2h22q5]

[Flame__]

Looking good!

[khav]

Liking the new bars. I know that you've done a few custom iterations, but personally prefer the more traditional curve...runs a cleaner line from the forks which are a focal point. Awesome build.

[Gold Member]

My favorite kind of bike. Next to my '72 that is.