Search found 560 matches

by UHJ200
Fri Oct 23, 2020 11:41 am
Forum: Technical: Questions and Solutions
Topic: Ignition
Replies: 8
Views: 44

Re: Ignition

Double check that the insulators on the contact breaker sets are correctly fitted.
by UHJ200
Sat Oct 17, 2020 1:42 pm
Forum: New member, welcome here!
Topic: Rumi junior gentleman new owner
Replies: 2
Views: 100

Re: Rumi junior gentleman new owner

Seconded!

They always were a pretty little bike.

And that's the reason I never got one, sadly I'm too big and too fat to perch on top of one without looking silly plus I didn't think I could ever diet down to the size of an Italian Lothario.
by UHJ200
Sun Oct 11, 2020 7:47 pm
Forum: Technical: Questions and Solutions
Topic: Why a "remote" float chamber?
Replies: 47
Views: 29529

Re: Why a "remote" float chamber?

Col wrote:
Sun Oct 11, 2020 7:08 pm
Thank you,

I made an idle jet too :-)

idle jet.jpg
Nah! Too shiny! Needs "distressing" to look authentic . . .
Missed sumfink in the middle too! :evil: :lol:
by UHJ200
Sun Oct 11, 2020 1:31 pm
Forum: Technical: Questions and Solutions
Topic: Why a "remote" float chamber?
Replies: 47
Views: 29529

Re: Why a "remote" float chamber?

Your workmanship does you credit. :D
by UHJ200
Sat Sep 12, 2020 4:04 pm
Forum: New member, welcome here!
Topic: My Rumi!
Replies: 7
Views: 681

Re: My Rumi!

Cleniless and flatness are the guardian angles of a tight seal. Check EVERYTHING --- TWICE. Does your engine have the "O" ring groove across the lower crankcase half? If so you should source a new strip of material. Look for something that is reasonably compliant, there are different grades of hardn...
by UHJ200
Tue Aug 25, 2020 11:36 pm
Forum: New member, welcome here!
Topic: Re commissioning
Replies: 3
Views: 400

Re: Re commissioning

All else being equal all you need is a spark and some fuel. The snag is "equal" means the sparks in the right place and a carburettor that feed the fuel properly. Is there any evidence that the machine has been run since its rebuild? Open the filler cap and with a good light inspect the inside of th...
by UHJ200
Fri Aug 07, 2020 6:55 pm
Forum: Technical: Questions and Solutions
Topic: Condensors
Replies: 9
Views: 958

Re: Condensors

Ah! That you can do something about. The easiest option is to replace the points with a new matched pair of points. To check find something that is the same diameter as the pivot pins in the stator plate. A twist drill shank would do, place both of the moving parts of the breakers on the temporary p...
by UHJ200
Thu Aug 06, 2020 4:12 pm
Forum: Technical: Questions and Solutions
Topic: Condensors
Replies: 9
Views: 958

Re: Condensors

"Wot's dat?" "A goldfish". "Wot's a goldfish?" At my age you should expect nuffink more! :oops: :lol: I rather suspect that those 'Brightspark' gizmos don't do the same job as the cappy buried inside a Lucas armature. Still, it got you going which is what counts. :) I do have a NOS Lucas cappy and ...
by UHJ200
Thu Aug 06, 2020 11:12 am
Forum: Technical: Questions and Solutions
Topic: Condensors
Replies: 9
Views: 958

Re: Condensors

My understanding is that the capacitor's function is to suppress points arcing and the resulting erosion. I very much doubt that it matters much what the voltage rating is as long as it exceeds the voltage it "sees". I do dimly remember long ago discussing this very capacitor business with an electr...
by UHJ200
Mon Jul 27, 2020 10:37 pm
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 89
Views: 52194

Re: Project restoration Formichino

My first problem is there is no notched tooth on my selector drum (part No.8 page 30) but there are two notched on the small idler gear... Bummer! I suspect, but have never had occasion to inverstgate further, that the marked tooth represents the mid point in the angular rotation of part No.8. The ...
by UHJ200
Mon Jul 27, 2020 2:14 pm
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 89
Views: 52194

Re: Project restoration Formichino

' Ere we go again :!: :lol: There has been more discussion on this forum about gear selection and its problems than any other! How the factory did the original setting is, it seems, lost in the mist of time. One thing I am sure of is that they did have a way. After all, if you are making hundreds o...
by UHJ200
Sun Jul 26, 2020 4:20 pm
Forum: Technical: Questions and Solutions
Topic: Missing piece
Replies: 12
Views: 1086

Re: Missing piece

Well done that man :!: Makes sense. 8-)

Don't remember what was on my little red Formi but then that was back in the early '50's
by UHJ200
Sun Jul 26, 2020 2:26 pm
Forum: Technical: Questions and Solutions
Topic: Missing piece
Replies: 12
Views: 1086

Re: Missing piece

I cannot get to my Tipo at the moment to check but if memory serves, (not the most reliable tool in the box), :oops: my carburettor has a different solid clip (part 17). I suspect but cannot state for certain that part 19 is a split ring made from a material with some flexibility. I suspect its purp...
by UHJ200
Sun Jul 26, 2020 11:41 am
Forum: Technical: Questions and Solutions
Topic: Missing piece
Replies: 12
Views: 1086

Re: Missing piece

Is your reference to part No.19 from the " Moto Rumi Servicing and Quick Reference Spare Parts Manual" ? A copy of which Hugo was kind enough to place in the reference section of this Forum for me. On page 20 (Petrol tank, Carburation and Exhaust System) of that document part No.19 is shown as a pet...
by UHJ200
Thu Jul 23, 2020 1:15 pm
Forum: Technical: Questions and Solutions
Topic: Piston
Replies: 3
Views: 461

Re: Piston

Right! This could get complicated! I have been looking at some of my bit and bobs. Sadly I am too computer illiterate to have the ability to post photographs on here but can e-mail with difficulty should anyone else know how. I have: One (broken) original piston from my Tipo Sport. One homemade Tipo...
by UHJ200
Tue Jul 21, 2020 8:09 pm
Forum: Technical: Questions and Solutions
Topic: Piston
Replies: 3
Views: 461

Re: Piston

I suspect but do not know without sitting down and doing a lot of measuring that the piston crowns are very alike. Where there is more likely to be a difference is the skirt cutouts for the porting. Piston rings do not entirely rely on their springiness to seal, compression pressure is intended to l...
by UHJ200
Wed Jul 01, 2020 9:04 pm
Forum: Technical: Questions and Solutions
Topic: Dry sparkplugs
Replies: 24
Views: 2751

Re: Dry sparkplugs

The aluminium rings that the oil seals are fitted into sit in grooves in the crankcase, there are tiny little pins that hide in the bottom of those grooves in the lower half of the crankcase, that is what the notches in the rings are for, to locate the rings and prevent them turning. The aluminium i...
by UHJ200
Tue Jun 30, 2020 10:46 am
Forum: Technical: Questions and Solutions
Topic: Adjust ignition - electric start
Replies: 2
Views: 492

Re: Adjust ignition - electric start

'Tis an AWFUL long time since I had anything to do with Dynastart and that one was in a three, cylinder engine in a 4 wheeled Berkley, ( yeh! I know, wash my mouth out with soap but at least it was a 2stroke ). ;) But I digress, the thing I wanted to point out was that you should not be too precious...
by UHJ200
Wed Jun 24, 2020 2:12 pm
Forum: Classified - Wanted & Sale
Topic: Formichino headlights
Replies: 7
Views: 1189

Re: Formichino headlights

arthur lewthwaite wrote:
Wed Jun 24, 2020 1:17 pm
i have just sent a good one off to rudolph.
Good on yer!

While you are posting things how about a tenner in my direction? :evil: ;) :lol: :lol:
by UHJ200
Wed Jun 24, 2020 10:56 am
Forum: Classified - Wanted & Sale
Topic: Formichino headlights
Replies: 7
Views: 1189

Re: Formichino headlights

Assuming you have to hand the part in the picture why not use it to take a mould?

You could then make a new one in GRP or if you are really daring Carbon fibre. :twisted:
It really is not difficult, smelly & messy, yes, but if you can re-build a Rumi it'd be a doddle!
by UHJ200
Wed Jun 03, 2020 9:26 pm
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 89
Views: 52194

Re: Project restoration Formichino

Oddly enough the limit to the size that you can use is your ability to get the bunch of wires through the holes in the steering stem, via the handlebars and out to the switch.

'Tis dark now so will check what I used tomorrow but with only SIX volts to play with big is good, bigger is better!
by UHJ200
Tue Jun 02, 2020 11:19 am
Forum: Technical: Questions and Solutions
Topic: Piston rings
Replies: 3
Views: 736

Re: Piston rings

This is not going to be of any real help. In the days of yore, before the internet, when Rumi spares were all but non existent I had to make my own piston rings and the pistons to go with them too! And yes, you cynics, they did work :!: But I promise you, they are an awful lot of work! Almost any pr...
by UHJ200
Sun May 31, 2020 4:41 pm
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 89
Views: 52194

Re: Project restoration Formichino

See, if you fitted a battery you wouldn't need three rear light lenses --- by the way, did I mention that I could use a new one for the Tipo? :twisted: :roll: :lol:
by UHJ200
Fri May 29, 2020 6:05 pm
Forum: Technical: Questions and Solutions
Topic: Insert battery
Replies: 9
Views: 1325

Re: Insert battery

One more small point: If you go down this route please install a fuse to protect the wiring from the juce in the battery should you get a short. Something a little over 5A should do nicely.
by UHJ200
Fri May 29, 2020 2:36 pm
Forum: Technical: Questions and Solutions
Topic: Insert battery
Replies: 9
Views: 1325

Re: Insert battery

I am a devout follower of K.I.S.S. so didn't bother with regulators and all that jazz, don't really beleive in elektrickery anways, sumfink to do with the dark arts I reckon :!: We are dealing with 6V at about 5A maximum, the battery pretty much controls the voltage and as we mostly have the lights ...
by UHJ200
Fri May 29, 2020 10:54 am
Forum: Technical: Questions and Solutions
Topic: Insert battery
Replies: 9
Views: 1325

Re: Insert battery

Not nearly as difficult as you might imagine. I installed a battery on my Tipo and it worked a treat. There are safety issues in today's traffic that alone make it worthwhile, you can have a decent stop light for a start, (won't stop some silly blighter rear ending you of course but it does at least...