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Messages - MarkCR750

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31
CB750 / Re: Electrical question
« on: June 28, 2019, 07:59:57 PM »
No not LED’s normal bulbs but they are only 5w not the 21w that the original rear indicators had, at present there are 21w normal bulbs at the front and 5w normal bulbs at the rear.

32
CB750 / Electrical question
« on: June 28, 2019, 05:37:17 PM »
Not a Honda but there are some on this forum with good electrical knowledge!, for me electrics = magic!, I’ve fitted small rear indicators on the rear of my Ducati Monster , leaving the standard indicators on the front,  now the indicators flash too fast, the small indicators have 5w bulbs and the standard fronts are 21w, if I fit small indicators on the front with 5w bulbs will that fix the problem, or will the flasher unit just not work properly with a total wattage of 10w per side when it’s previously had 42w?,

33
Other Bikes / Re: Ducati M900 the new toy
« on: June 22, 2019, 06:20:26 PM »
I fitted the 45 pilots, (the 40’s that were fitted were partially blocked), no more popping or backfire on decel, I found it already had 150 mains fitted and tapered needles that were all in great condition so I refitted those, the emulsion tubes looked good too but I fitted the new ones anyway + needle valves etc, there was a lot of dirt in the bowls and on the diaphragms but nice and clean now, rides really well , plenty of torque , when I first went to start it the starter was stone dead! , quick phone call to The local Ducati specialist and he pointed me at the small white connector on the back of the solenoid, he was right of course, I’ve also taken the pop rivets out and all is good:)

34
Other Bikes / Re: Ducati M900 the new toy
« on: June 20, 2019, 12:10:53 PM »
Yes it’s a PITA on the Monster, it’s very similar to my 900ss, getting to the carbs requires airbox/battery box, coils and igniters etc off, at least the tank hinges out of the way and has its own bonnet stay🙂, knowing it’s a long job I’ve divided it into chunks, got to carbs last night 45 mins including packing tools away, tonight it’s carbs off strip & clean est 1.5 hours, tomorrow rebuild est 1.5 hours, better than a 4 hour stint, shame it’s not the James Captain, 1 bolt and the carbs off, unscrew cap and slide is out, 1 more nut to remove bowl, proper engineering!

35
Other Bikes / Re: Ducati M900 the new toy
« on: June 20, 2019, 08:09:53 AM »
Ha, just had a quick look at the video, I’ll watch it later, looks bonkers!, I’m re-jetting, got a couple of rebuild kits from NRP carbs yesterday with bigger jets and new emulsion tubes etc, I got 150 mains and 42.5 and 45 pilots, I believe it’s currently fitted with 40 pilots so I’m trying to decide whether to go straight to the 45’s or not, it would be irritating to fit the 42.5’s and then have to take it all down again to fit the 45’s, decisions decisions!
Update; I think if I find the 40’s are blocked I’ll use the 42.5’s, if I find they are clear I’ll use the 45’s.

36
Other Bikes / Re: Ducati M900 the new toy
« on: June 17, 2019, 09:43:37 AM »
Ha, ingenious!

37
Other Bikes / Re: Ducati M900 the new toy
« on: June 16, 2019, 11:59:04 AM »
Ok so I’ve been out this morning, it was still popping on overrun, so I stopped and fitted all 6 screws in both baffles to blank off the small exit holes, popping is much reduced , virtually gone, came home and checked plug colour, looks good which surprised me having taken the pilot screws out so much, anyway it looks good so I’m leaving the mixture screws at their current setting for the time being, I’ve blanked off the small exit holes in the baffles semi permanently now with pop rivets, I think next it’s strip and clean the carbs, the very slight popping that remains is most probably partially blocked primary jets, I had that on my 900ss, baffle photo below.

38
Other Bikes / Re: Ducati M900 the new toy
« on: June 15, 2019, 09:16:44 PM »
Yes stock cans are restrictive, obviously they have to meet noise regs, it’s always a balance though, too little back pressure can result in less power/torque, lean running etc, earlier today just after posting I borrowed a tree fellers bow saw from a gardener I saw and cut some off the handle off my screwdriver (I always insist on using the correct tool for the job 🙂), this allowed me to adjust the mixture screws, I took them from 1.75 turns out to 2.75, it was still popping on the overrun though, so when I got home I check tightened the exhaust flanges, put silicone exhaust sealant in the slip on joints, (plugs looked a good colour, maybe a tad pale) anyway I took the mixture screws to 4 turns out (same as my 900SS runs well on), and tapped the 6 small exit holes that surround the large centre exit hole in each baffle, I then fitted 3 screws in each baffle in the holes I’d tapped to blank the baffles off partially, it then started raining like crazy so I couldn’t ride it to see the effect , tomorrow I’ll go out armed with 6 more screws and some tools, if it doesn’t pop I’ll remove the 6 screws currently fitted, if it does I’ll add 6 screws so the baffles only have the centre exit hole open, if it still pops I’ll take the mixture screws to 5 turns out, if it still pops I’ll have to look into fitting bigger jets,  but hey I love this experimental type stuff 

39
Other Bikes / Re: Ducati M900 the new toy
« on: June 15, 2019, 09:10:07 AM »
Sounds good, not too loud with the baffles in and a lovely deep boom when you throttle off, light popping on overrun which tells me it’s slightly lean, I expected that and put a screwdriver in my pocket to adjust the mixture screws, annoyingly I chose the wrong one, it’s 20mm too long to fit in, looking for someone with a hacksaw now to cut a bit off the handle 🙂

40
Other Bikes / Re: Ducati M900 the new toy
« on: June 14, 2019, 10:06:30 PM »
Those pipes make a massive difference to the look ...and, I suspect, the sound of the bike
They were a nightmare to fit!, RH dropped on but I couldn’t get any clearance to the swing arm on the LH, much adjustment, wrangling, shimming and swearing and 3 hours of my life I’ll never get back and it was done!, I haven’t been able to get out for a ride due to the rain but it’s hopefully sunny tomorrow, sounds OK on tickover 🙂

41
Other Bikes / Re: Ducati M900 the new toy
« on: June 14, 2019, 10:02:13 PM »
Looks good Mark.
But what do I know I thought it looked good before.
I consider my Aprilia to be tidy and now I realize just how ratty it is :-[
Cheers Mick, you’re aprilia just needs a little love that’s all, couple of spray tins and a days work and it’d be a minter!

42
Other Bikes / Re: Ducati M900 the new toy
« on: June 14, 2019, 01:45:12 PM »
New silencers, discs, bit of paint here and there, still a lot to do but at least it’s looking presentable now.

43
CB750 / Re: PD41A float height?
« on: June 13, 2019, 08:17:06 PM »
That’s alright, my pleasure 👀

44
CB750 / Re: pilot screw advice
« on: June 13, 2019, 02:28:47 PM »
You could be confusing this with info for PD carbs, these have a “fuel screw” , it’s on the engine side of the slide, unscrew give more fuel, screw in gives less fuel, your carbs have the “air screw” on the filter side of the slide, screw in means more fuel, screw out means less fuel.

45
CB750 / Re: PD41A float height?
« on: June 12, 2019, 03:23:11 PM »
NRP carbs, you can google them.

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