new toy

Maestro, SEI-V
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

new toy

Post by lemans »

User avatar
Daddy Dom
Posts: 512
Joined: 16 Nov 2006 19:48
Location: Auckland, New Zealand

Re: new toy

Post by Daddy Dom »

Very nice and lean. That pipe looks like it means business!!
MRC 3082½
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

did some work on the MM500 today. it is difficult to start but I have to recommission the bike. so carburettors will be cleaned and ignition timed. When running at 2000 rpm the battery is charged so the regulator does work (apperently). the choke must be used to keep it running. when I turn the chokes of ithe engine will run but dies then suddenly. When warm it starts more easily.

new tires are ordered as the ones fitted are from 1992, and dry.

has onyone of you experiences with the oil-filter-modification? https://www.heimracing.eu/motorradzubeh ... to-morini/
(scroll down a bit)
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

bought a container aspen 4-stroke fuel, bike starts much easyer and idles at 1100 rpm without chokes. short testride proved positive. so carburation etc is quite good for normal fuel. have to decide if I'm going to run it on this fuel or re-yet the engine for modern fuels.

checked the timing belt, seems to be first issue from factory so could be 30 years old. no more running till replacement.
Image

so it seems to be a genuine low-milage bike stored for most of its life
huub
Posts: 194
Joined: 24 Jul 2006 15:11

Re: new toy

Post by huub »

nice find!
but why tune it for aspen?
these things should run on E10 pump petrol.
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

well, at the moment it is difficult to start on E5/E10 and won't idle. When warm it will idle at 1200 rpm, requiring choke and then suddenly die. cleaning carbs didn't improve anything at all. Out of curiosity bought a canister of Aspen-fuel and presto, 1100 rpm tick-over and no stalling. test-ride also proved positive.

so now I have to decide on future use:
as a daily driver -> rejetting is necessary
as a weekend runabout -> could do with an occasional can of aspen, albeit expensive
huub
Posts: 194
Joined: 24 Jul 2006 15:11

Re: new toy

Post by huub »

sounds like your carbs are a good candidate for another ultrasonic clean.
the worst carbs i ever had were from a Aprilia pegaso, those drove me mad, impossible to set them up.
I eventually got them clean by soaking them in acetone for a week.
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

ultrsonic clean -> will do, eventually
first objective is to get it on the road.
new tires and RDW are for next week
EVguru
Posts: 1528
Joined: 01 Aug 2006 11:13
Location: Luton
Contact:

Re: new toy

Post by EVguru »

I've always stuck to Shell V-Power, or other high octane pump fuels as much as possible, but had no running or starting issues with 95 octane.

Poor starting, if the carbs are in good health and properly set up, can be down to a degraded ignition winding on the alternator, weak magnets in the rotor, or the usual suspects of leads, caps and plugs (non resistor, or 1k caps).
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

status as of today:
- belt replaced for new
- tires renewed

the tires were indeed from wk 25 1982. took some effort the remove the hardened rubber. fitted bridgestone battleaxe (BT46)
90/90 front, 110/90 rear. my experience with bridgestone is good, use them on the BSA and LM as well to great satisfaction.

next, check on exhaust decibels and requirements before going to the RDW
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

Image

received a left-side engine case today. will be used for fitting an external oil-filter. time-frame: unknown but probably before next season
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

some advice needed with regard to removing the castle-nuts.

bought a C-spanner (like this one https://www.kramp.com/shop-nl/nl/vp/40- ... b6-4149690 )
but can't move either nut, not even with a fair amount of force.

so how to undo these nuts for removing the exhaustsystem
regards A
3potjohn
Posts: 1243
Joined: 02 Jun 2007 13:58
Location: Devon

Re: new toy

Post by 3potjohn »

I would try and get a spanner as per viewtopic.php?t=6411
This type engages with more of the nut. A 350 version will not fit the 500 by the way.
I would then try applying penetrating oil for a few days, warming the engine then try again with a smack from a lump hammer. If you do get them out, clean the threads of carbon as best you can and apply some moly paste.I use Optimol grease, left over from the much easier BMW exhaust nut maintenance. Best of luck.
John
lemans
Posts: 63
Joined: 01 Oct 2017 18:52
Location: Heino

Re: new toy

Post by lemans »

sound advice, started with penetrating oil today and see if I can get hold off one of the topic-spanners. as for today, no movement at all.
Stempy
Posts: 135
Joined: 07 Jul 2020 08:23
Location: Grimsby

Re: new toy

Post by Stempy »

I still have a few spanner’s left if you need one :D
Post Reply