99 FLT Ultra Lehman Renegade

[Fuzzy1]

Hi there again,

I have started ridding this new to me trike some and I have to say the rear drum rakes are really lacking stopping ability. They will not lock up the rear wheels at all and the front seem fine and provide most of the stopping force. I had the brake systems flushed and bled. I have the install manual and see nothing called out about the master cylinder.
Questions
1. Did Lehman add a residual check valve to the master cylinler? Because Disc masters do not have them and I believe they are need to be on drum master cylinders?
3. Anyone do a conversion from Drum to Disc on these older Lehmans?

Thanks for the help
Bill

Pic was when I was going thru the Magneti Marelli fuel system to repair leaks and clean it after years of sitting. Used Deoxit D5 on all the electrical connectors and adjusted per manual and all good so far.

 

[Gorilla]

Fuzzy I'm not a lehman person at all. But from reading posts over the years I do not believe they had a residual valve in the system. Papa Zook may remember.
Just a point the rear brakes were always a weak spot. Maybe try setting the shoes closer to the drums? Or try a different set of shoes that claim better stopping grip?

When you look at the residual valve there are 2 different ones one for disks and one for drums.

As far as a disk swap you would have to identify the brand of the current system. I read that they used different ones over the years.

 

[Papa Zook]

The addition of an inline residual valve can be helpful. THIS ONE on Amazon is a good option. Champion Trikes supplied one of these with all of their trike conversions.

 

[Fuzzy1]

Thank you Papa Zook, I just ordered the valve.

 

[Fuzzy1]

Fuzzy I'm not a lehman person at all. But from reading posts over the years I do not believe they had a residual valve in the system. Papa Zook may remember.
Just a point the rear brakes were always a weak spot. Maybe try setting the shoes closer to the drums? Or try a different set of shoes that claim better stopping grip?

When you look at the residual valve there are 2 different ones one for disks and one for drums.

As far as a disk swap you would have to identify the brand of the current system. I read that they used different ones over the years.

Thank you Gorilla,
Yelp I understand that the rear brakes have always been and issue and apparently still are for the TriGlide. One of the mechanics at a indenpent shop just told me yesterday his 2024 only provided about 10 percent of the stopping power. Go figure it looks like this issue would have been solved long ago. But heck I am just an old wrench that likes stuff to work correctly to me.