1997 BMW F650ST to F650R: Enduro Hellride Conversion

irk miller · Jan 10, 2018

Re: 1997 BMW F650 El Diablo Hellride

The tank is all closed up, so now I’ll need to locate the petcock. When the motor is rebuilt, that will happen. I want to be sure it goes where it needs to be.

I also got a Ducati muffler to replace the stock can...

Sent from my iPhone using DO THE TON

Pete12 · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Very nice work, that tank and seat looks factory.

2_DONE_THE_TON · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Looks killer man!
How did you shape the sheet metal pieces you soldered in?Are they curved?

Thanks

irk miller · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Ryan Stecken said:
Looks killer man!
How did you shape the sheet metal pieces you soldered in?Are they curved?

Thanks

Yep. They're curved slightly on an english wheel.

Maritime · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

This bike is going to make a lot of folks scratch their heads when they see it finished. I know you put up colour scheme with the BMW rondal but I'd debadge it completely and see if anyone can figure out it's origins LOL.

irk miller · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Hahaha. That could be pretty funny.

Hurco550 · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Maritime said:
This bike is going to make a lot of folks scratch their heads when they see it finished. I know you put up colour scheme with the BMW rondal but I'd debadge it completely and see if anyone can figure out it's origins LOL.

ATK used a ROTAX lump. You could use an ATK badge and really confuse people

"prototype 4 stroke ATK" type deal, since they were all 2 stroke in the ATK iirc.

irk miller · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Hurco550 said:
ATK used a ROTAX lump. You could use an ATK badge and really confuse people

"prototype 4 stroke ATK" type deal, since they were all 2 stroke in the ATK iirc.

That ATK is awesome.

Hurco550 · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

irk miller said:
That ATK is awesome.

buddy nick bought one at an auction once. They had some neat innovations with the countershaft mounted rotor to reduce unsprung weight and the spaced chain to keep the tension constant. They are cool machines for sure

JustinLonghorn · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

This is quickly becoming a pretty righteous motorbike, Irk.

irk miller · Jan 11, 2018

Re: 1997 BMW F650 El Diablo Hellride

Converted to a 21” front wheel from a DR650. It was pretty damn close to swapping with no work, but not quite. They both use a 17mm axle, so no changes there.

First, I had to turn 4mm off the DR speedo gear face. Then, I modified the BMW cable end to match the DR receiver...

Then, just a few mil off the DR spacer and we mount right up...

Sent from my iPhone using DO THE TON

irk miller · Jan 15, 2018

Re: 1997 BMW F650 El Diablo Hellride

A small update with the back tank and front seat mount, which is a bracket added to the stock mount...

Sent from my iPhone using DO THE TON

Maritime · Jan 16, 2018

Re: 1997 BMW F650 El Diablo Hellride

Slick

irk miller · Jan 18, 2018

Re: 1997 BMW F650 El Diablo Hellride

Working on simplifying this wiring harness...

...

Everything still shows on the drawing, but deleted parts lose their lines.

Sent from my iPhone using DO THE TON

irk miller · Jan 27, 2018

1997 BMW F650 El Diablo Hellride

I swapped the rear shock out for a GS rear schock...

I’m also working on the headlight fairing, which will be revealed later.

Sent from my iPhone using DO THE TON

irk miller · Jan 27, 2018

1997 BMW F650 El Diablo Hellride

Header from an ‘05 GS has the perfect bend to tie the Ducati muffler in. Even has a bung for an 02 sensor/gauge. It’ll come in handy tuning the carbs.

A clamp for the front side is forthcoming.

Sent from my iPhone using DO THE TON

irk miller · Jan 27, 2018

Re: 1997 BMW F650 El Diablo Hellride

We’re going to attempt to run TM34 flatslides. It’s super tight, and I had to make a bracket to keep them off each other. Dialing this things in is going to be a blast...

Sent from my iPhone using DO THE TON

irk miller · Jan 27, 2018

Re: 1997 BMW F650 El Diablo Hellride

Glassing up a DR350s fairing and shaping a Super Tenere windshield with heat. Still a long way to go, but you should get the idea where I’m heading...

Sent from my iPhone using DO THE TON

Pete12 · Jan 28, 2018

Re: 1997 BMW F650 El Diablo Hellride

Wow, this thing is going to be awesome. Easy to say, but everything seems to be falling into place. Watching the progress eagerly....

irk miller · Jan 28, 2018

1997 BMW F650 El Diablo Hellride

One major issue with fitment of the TM34 carbs and this frame is the location of the idle adjust. The left carb is right on the frame and the right is between the two. So, with no remote adjusters for this carb, I set out to make my own.

I took a TM33 pumper remote...

separated the cable and screw, and brazed it to the TM34 adjuster that was turned down...

Then, I drill a hole through the frame...

Now I have adjust located out of frame...

I’ll at least plug the hole, but a thought to weld a tube is also there.

Sent from my iPhone using DO THE TON

1997 BMW F650ST to F650R: Enduro Hellride Conversion

You've been mostly-dead all day.

Been Around the Block

Over 1,000 Posts

You've been mostly-dead all day.

Over 10,000 Posts

You've been mostly-dead all day.

Keep er' Between the Ditches

You've been mostly-dead all day.

Keep er' Between the Ditches

No Purple Hearts, No Blue Ribbons

You've been mostly-dead all day.

You've been mostly-dead all day.

Over 10,000 Posts

You've been mostly-dead all day.

You've been mostly-dead all day.

You've been mostly-dead all day.

You've been mostly-dead all day.

You've been mostly-dead all day.

Been Around the Block

You've been mostly-dead all day.

DTT Light or Dark

Spread the Love