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Author Topic: M750 Scrambler Project  (Read 61935 times)
koko64
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« Reply #105 on: October 02, 2018, 09:13:21 AM »

I looked that up for open airbox and pipes 'stage 2". DJ mains at 148 (Mikuni 138), 729 needle at #3 waytogo. I'm using FP needles for a 900 which are leaner than the DJ 730 needles for 900's and closer to DJ 729 needles.
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koko64
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« Reply #106 on: October 02, 2018, 12:21:29 PM »

I thought you gave me the tip about stock springs in a 750? Maybe it was Speeddog. I guess Lofgren likes them so that's something.
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« Reply #107 on: October 02, 2018, 07:30:39 PM »

I'm shocked, checking my records I've been running the FCRs on my 750 for 5 years.

I've only used FP stuff as a complete kit, not done any mix-n-match.

I did my M750 Mikunis with an FP kit, and they worked so good that in a weak moment I decided to leave them be (rather than continue fiddling and make them worse).
FP Kit with floats at 14mm, #45 PJ, #135 Main, Needles on 2nd clip and fuel screw 3 turns is what my notes say.
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~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~
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« Reply #108 on: October 02, 2018, 07:48:44 PM »

 Grin

Well, I appreciate all the advice from you blokes.
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« Reply #109 on: October 02, 2018, 08:49:01 PM »

I thought you gave me the tip about stock springs in a 750? Maybe it was Speeddog. I guess Lofgren likes them so that's something.

No,it was me.  Just never got around to doing it on my bike.
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koko64
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« Reply #110 on: October 02, 2018, 10:07:18 PM »

  Grin
« Last Edit: October 02, 2018, 10:45:22 PM by koko64 » Logged

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« Reply #111 on: October 04, 2018, 09:41:58 PM »

S~~~SNIP~~~
The period-correct Ohlins can be made longer-travel with the new seal head.
I set mine up to just have the rocker barely clear the seat/tank support bracket.

I remembered that I had to carve away a bit at the inside of the rocker for it to clear the shock body.
And I still had to run a bit more preload than I wanted, such that the castle ring wouldn't hit.
It really did help a lot, though.
Extra travel at the wheel, and more progression through the stroke.
OTOH, I grew up on dirt bikes, so long travel is like warm cookies to me. YMMV

All the 90's era bumpstops I see are perished stale bread, or nothing at all.
Seems hard to talk folks into doing a repair on that.

I've not done any sort of travel increase on the 41mm forks.
I've done revalve and respring on them, and they turned out nice.
Sometimes replacing bushings is necessary as they get fuxxored on removal.
Check to make sure the bushing fit is OK....
I had a set of aftermarket replacement ones that would have been a permanent assembly if I had managed to get them together and just flat ruined otherwise.
Luckily I caught something seemingly dodgy and measured before hammering.

I would imagine theres some sort of cartridge from a Japanese ADV bike or ? that would be workable, yes?
It's astonishing how an added inch of suspension travel really can improve the ride.
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~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~
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« Reply #112 on: October 05, 2018, 12:35:07 AM »

IMG_1361 by Tony Kokonis, on Flickr

Since the carbs now have a jet kit fitted, I thought I'd test how it runs with these larger K&N barrel filters with outerware prefilter bags.
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« Reply #113 on: October 05, 2018, 12:42:55 PM »

Night ride through the mountains - yeeessss!
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2001 Ducati  Monster 900S ie
JE high comp pistons, bit of porting, open airbox with DP filter, PC3 with custom map, CCW matched injectors, Termignoni cf slip ons, 14:39 gearing.

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Honda VFR800i, Honda CBR600F3, Honda CBX750, Norton Commando 750S, Suzuki GS750, Yamaha XT250, Kawasaki Z250, Kawasaki KX80, Honda XL250, Suzuki TC100.
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« Reply #114 on: October 05, 2018, 01:08:35 PM »

Out for a late dinner with the GLW.

Thumbs up!
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2001 Ducati  Monster 900S ie
JE high comp pistons, bit of porting, open airbox with DP filter, PC3 with custom map, CCW matched injectors, Termignoni cf slip ons, 14:39 gearing.

Gone but not forgotten!
Honda VFR800i, Honda CBR600F3, Honda CBX750, Norton Commando 750S, Suzuki GS750, Yamaha XT250, Kawasaki Z250, Kawasaki KX80, Honda XL250, Suzuki TC100.
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« Reply #115 on: October 05, 2018, 08:19:45 PM »

 waytogo
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koko64
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« Reply #116 on: October 12, 2018, 03:16:54 AM »


So  it wasn't my imagination. I can see through the timing window that the flywheel is one of these minimalist alloy types. Rather than just an alloy copy of the stock conical shape like the DP version, it's a machined down alloy version with relocated advance marks. It is shaped like the single phase light flywheel but with the spline fitting for the later motor, so even lighter compared to the DP part. I thought this bike went well!

Anyone have this one?
« Last Edit: December 12, 2018, 04:33:58 AM by koko64 » Logged

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« Reply #117 on: October 12, 2018, 07:46:51 AM »

This one?

http://www.ducati-kaemna.com/schwungrad-ergal-900-ab-98-vergaser-monster.html
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- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~
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« Reply #118 on: October 12, 2018, 08:15:48 AM »

That's the one waytogo
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« Reply #119 on: October 12, 2018, 09:00:54 AM »

Anyone know what the stock cranking cylinder pressures would be?
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