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Author Topic: 1997 BMW F650ST to F650R: Enduro Hellride Conversion  (Read 10659 times)

Offline irk miller

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1997 BMW F650ST to F650R: Enduro Hellride Conversion
« on: Dec 27, 2017, 14:15:42 »
Time for more projects. I was ready to rid myself of the DR350 because it was strictly dirt  and lacked title or tag-a-bility. A local guy was killing the Funduro and wanted to trade for a dirt bike. Iím taking the hit in the deal, but I see a lot of untapped potential in this machine. It has a good frame and a wonderful motor in the Rotax 650. It has torque for days.  I got what seems like a good base for a pure enduro with legitimate off-road capabilities. 

Pre-2004 YZ426 front end swaps are well documented and a literal bolt-in application. I have a couple front ends (CR) in-house to try out, too.

Here it is in all of its fubar glory when I brought it in...



Lots of things were messed up by a hamfisted PO. I could list them for days, but what he tried to do to fix the throttle control says it all...



It also included an Ichibon worthy turn signal fix...



Stripping it down has begun with lots of house wire and wire nuts in the harness.  This is gonna be a blast...






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Offline TranceMachineVienna

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #1 on: Dec 27, 2017, 14:22:28 »
all kinds of awesomeness man!
count me in!

Offline advCo

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #2 on: Dec 27, 2017, 15:27:30 »
I dig these bikes, but they are ugly. Looking forward to this one.

P.S. - Finish that chopper.
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0 - Sold
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0 - Sold
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0
'97 BMW F650st - http://www.dotheton.com/forum/index.php?topic=75732.0

Offline The Limey

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #3 on: Dec 27, 2017, 15:54:55 »
Ah, the old Hunduro.  What sort of style you going for?
I was born a rocker.  I'll die a rocker.  And I'm proud of it.

Offline irk miller

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #4 on: Dec 27, 2017, 16:49:29 »
Going for a legitimate dual sport.  I'd like to shave as much weight as I can, without losing essential components.  I don't necessarily want to change the carbs, so I may be married to the rear subframe, despite how huge it is.  They did a pretty good job integrating the air box and electronics into that triangle.  Smaller tank, but not too small.  Something 80s Honda, most likely.

Offline WhyNot

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #5 on: Dec 27, 2017, 18:30:45 »
Dayyyyum Eric, you find all the good deals........

Wow........
2006 Harley Davidson Heritage Softail
1975 Honda CB750K5 needs carb work
1974 Honda CB350F2 needs tins painted (being lazy)
1972 Honda CB175K2 roller no engine
1972 Honda CB/CL350 Engines need roller
1972 Honda SL350K2 Frame for above engine
1972 Honda CB100K2 needs kicker shaft
1990 Mitsubishi MM needs engine rebuild
1984 Dodge D50 Beater DD since 1997

Offline irk miller

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #6 on: Dec 27, 2017, 18:55:19 »
Whether I got a deal is still to be determined. Haha.

A little more stripping and reminders why I like older bikes...




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Offline irk miller

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #7 on: Dec 29, 2017, 13:23:22 »
Adapting an XL600r tank to fit the short spine and wishbone. Itís nice because itís legitimate dirt, still has volume and still gives me access to the oil filler...












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Offline irk miller

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #8 on: Jan 01, 2018, 23:51:52 »
Swapped the bars for Renthal, stripped the harness out to do some relocating and to fix some hacks, pulled the air box and stock exhaust in preparation of things to come. For the moment, I have a Ninja clutch lever, but itíll get swapped back to stock when I find a replacement ...






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Offline Hurco550

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Re: 1997 BMW F650ST El Diablo Hellride
« Reply #9 on: Jan 02, 2018, 00:02:00 »
 that xl tank is the business.

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"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet