Search found 525 matches

by UHJ200
Sat Mar 21, 2020 11:58 pm
Forum: Technical: Questions and Solutions
Topic: engine removal
Replies: 10
Views: 417

Re: engine removal

Being from the "colonies", (nobody's perfect :lol: :roll: ), you probably don't know about thruppenny bits. Every Rumi owner should have one to demonstrate just how smooth the Rumi engine can be. Anyway, you have a surface plate and a d.t.i., good start! All you need now is three matching "Vee" bloc...
by UHJ200
Thu Mar 19, 2020 5:47 pm
Forum: Technical: Questions and Solutions
Topic: engine removal
Replies: 10
Views: 417

Re: engine removal

DO NOT weaken! I presume you took it apart, if so you can bloody well put it back together! Think thrice, measure twice, cut once! If you have ANY doubts we are here. While I have some sympathy for Greasy's method, (they are after all sneaky little buggers hiding down a hole), I am not entirely com...
by UHJ200
Wed Mar 18, 2020 11:56 am
Forum: Technical: Questions and Solutions
Topic: engine removal
Replies: 10
Views: 417

Re: engine removal

In the bottom half of the crankcase there are little pins that are there to prevent rotation of the crankshaft seal carriers. The seal carrieres themselves have notches that are meant to locate over the pins. It is all too easy when laying a crankshaft into the crankcase to not ensure that the all t...
by UHJ200
Fri Feb 14, 2020 12:19 am
Forum: Technical: Questions and Solutions
Topic: Contact
Replies: 14
Views: 1052

Re: Contact

If you mean the flywheel generator then there is plenty of detail in the "downloads" section of the forum. One additional point, equal angular opening of the contact breakers is more important than the fully open gap setting. The more equal the better of course but an equal ignition angle on both cy...
by UHJ200
Thu Feb 13, 2020 2:50 pm
Forum: Technical: Questions and Solutions
Topic: 21 inch tyres
Replies: 7
Views: 653

Re: 21 inch tyres

Thank you for the heads-up Hugo, gawd knows what went wrong, I thought I'd copied and pasted the item number correctly, but then as I will tell anyone who will listen: (Adopts stooped posture and a quavering voice for effect) "Well I an 79 y''know!" :roll: :lol: I think the number I was trying to po...
by UHJ200
Wed Feb 12, 2020 1:28 am
Forum: Technical: Questions and Solutions
Topic: 21 inch tyres
Replies: 7
Views: 653

Re: 21 inch tyres

eBay item number: 4020847 Any use?
by UHJ200
Thu Jan 23, 2020 1:07 am
Forum: Technical: Questions and Solutions
Topic: 21 inch tyres
Replies: 7
Views: 653

Re: 21 inch tyres

I think some of the early Scott motorcycles used this size, might be worth visiting the Scott Motorcycle Forum.
by UHJ200
Mon Jan 20, 2020 12:48 pm
Forum: Classified - Wanted & Sale
Topic: Shifter part needed - Selector Quardrant
Replies: 16
Views: 829

Re: Shifter part needed - Selector Quardrant

Which just goes to prove what a bunch of couldn't care less muppets they are, when I went to their Basildon distribution centre I was told it had gone to Milton Keynes. Their whole attitude was "tough s++t ~~ not interedsted -- don't care". One thought, if sending a parcel maybe sticking an "as seen...
by UHJ200
Sun Jan 19, 2020 6:07 pm
Forum: Classified - Wanted & Sale
Topic: Shifter part needed - Selector Quardrant
Replies: 16
Views: 829

Re: Shifter part needed - Selector Quardrant

I'll second that, NEVER, NEVER send anything you cannot, for whatever reason, risk loosing! Particularly if it's Yodle , their delivery knuckle dragger couldn't find a house that's been sitting here since 1926, house numbered on the gatepost and sitting in an established made up road --- ask poor ol...
by UHJ200
Thu Jan 16, 2020 6:08 pm
Forum: Technical: Questions and Solutions
Topic: Headstock brg cups
Replies: 4
Views: 459

Re: Headstock brg cups

"to fit what motorcycle"

By some remote chance might it be a Rumi? :evil: :lol:

If not too NBG they can be recovered with the aid of a lathe and failing an air grinder then a Dremel. Been there, done that.

With any luck the case hardening will be +1/32" deep so you do have a chance.
by UHJ200
Wed Jan 15, 2020 2:00 pm
Forum: Technical: Questions and Solutions
Topic: 10 inch tyres
Replies: 1
Views: 222

10 inch tyres

While the old style 10" x 3.5" tyres look the part I was wondering if the construction/materials used have caught up with thoses used in the modern tyres. Does anyone know for sure? Also if the above is not the case are the modern profile tyres compatable with the existing Rumi rims? Has any body tr...
by UHJ200
Thu Dec 05, 2019 11:32 pm
Forum: Technical: Questions and Solutions
Topic: Cilinder gasket
Replies: 8
Views: 703

Re: Cilinder gasket

now solve the problem with the gearbox control :D If you mean gear selection/jumping out of gear adjustments and corrections then there are lots of posts about this already on the Forum. Other than the thorny subject of exactly how the factory went about assembling the right hand cover and those pa...
by UHJ200
Thu Dec 05, 2019 12:28 am
Forum: Technical: Questions and Solutions
Topic: Cilinder gasket
Replies: 8
Views: 703

Re: Cilinder gasket

Count yourself lucky mate! ;)
"Back in the day" when I rebuilt my Tipo there were no spares, no Forum, no nuffink :!:
I had to make everything from scratch, my own cylinder liners, pistons, rings and gudgeon pins! :roll:

Always happy to help if I can. :D
by UHJ200
Wed Dec 04, 2019 6:34 pm
Forum: Technical: Questions and Solutions
Topic: Cilinder gasket
Replies: 8
Views: 703

Re: Cilinder gasket

Remember that a 2stroke does not start to compress until all the ports are covered, a 4stroke makes better use of the stroke so you should not expect as high a reading for a 2stroke. Remember also, (I deduce), that at least the pistons and rings are new and therefore not bedded in. If my geriatric m...
by UHJ200
Wed Dec 04, 2019 1:33 pm
Forum: Technical: Questions and Solutions
Topic: Cilinder gasket
Replies: 8
Views: 703

Re: Cilinder gasket

" it appears that I only have 4.5 a5 kg compression pressure " Sorry but it would seem there is a translation problem, clarify please. A thinner cylinder base gasket will lower the ports in the cylinder relative to the piston and will make a small alteration to the timing of all ports, not to be re...
by UHJ200
Sun Sep 15, 2019 11:43 pm
Forum: Technical: Questions and Solutions
Topic: Dellorto MB 22A for Formichino Sport
Replies: 13
Views: 1363

Re: Dellorto MB 22A for Formichino Sport

What Hugo says about points gap is true up to a point - BUT - what should be remembered is that what the engine needs/wants is that the points for BOTH cylinders open at EXACTLY the same degree of advance. Adjusting the points gap to the same setting may not achieve this. Even new parts from the sam...
by UHJ200
Sun Sep 23, 2018 5:25 pm
Forum: Technical: Questions and Solutions
Topic: How many kms/miles can be done .....
Replies: 10
Views: 2297

Fuel tanks

How many kms/miles can be done with a full fuel tank? Following on from Hugo's Forum question and my comment about a larger capacity tank, it occurred to me to suggest that it is worth considering such a project particularly if you are engaged on a re-build. Warning! You would need facilities not u...
by UHJ200
Sat Sep 22, 2018 4:56 pm
Forum: Technical: Questions and Solutions
Topic: How many kms/miles can be done .....
Replies: 10
Views: 2297

Re: How many kms/miles can be done .....

Not a Formichino but my Tipo did about 55mpg when I was commuting 40 miles each way to London. And that was mostly full throttle with a fully clad 6 foot 15 stone lump perched on top. One thing I was thankful for was the 1.3 gallon tank that I made to replace the rusted-out one that came with the ma...
by UHJ200
Thu Aug 09, 2018 10:28 pm
Forum: Cafe Rumi
Topic: Colour
Replies: 11
Views: 3502

Re: colour

Do you have to paint a Rumi Junior Gentleman red, most others are, my one came as trolling chassis in a lightish Rumi blue as hugo i believe mentioned in an earlier post. I am thinking of painting mine in metallic Subaru blue, with gold panels on tank. Any comments welcome. Only the ones that live ...
by UHJ200
Fri Jan 05, 2018 11:39 pm
Forum: Technical: Questions and Solutions
Topic: Importing a bike. Advice needed.
Replies: 27
Views: 9086

Re: Importing a bike. Advice needed.

Plenty of room inside the nacelle for a mounted box containing five U2 sized NiCads or a Honda C50 moped sized battery. There is one major advantage in having a battery on board: You do not have the flickering glow-worm lighting effect when on tickover, (sitting at traffic lights for example), a bat...
by UHJ200
Sun Dec 24, 2017 7:16 pm
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 60
Views: 39315

Re: Project restoration Formichino

I wouldn't worry about what's going on at bdc myself .
You have of course every right to your opinion but I will back mine with 50 years in the precision engineering game 23 of which concentrated on internal combustion engine research and development.
by UHJ200
Sun Dec 24, 2017 11:29 am
Forum: Technical: Questions and Solutions
Topic: Project restoration Formichino
Replies: 60
Views: 39315

Re: Project restoration Formichino

More important than top dead centre is the position of the piston crown at bottom dead centre.

The bottom of the exhaust port and that part of the piston crown adjacent to it should be line-on-line at bdc.
by UHJ200
Wed Dec 06, 2017 4:59 pm
Forum: Classified - Wanted & Sale
Topic: 10 inch wheels wanted.
Replies: 23
Views: 4127

Re: 10 inch wheels wanted.

Any idea of price? I suppose it depends on the size of the batch. Indeed! I only had contact with these people on another matter but while I was there they were kind enough to demonstrate what they could do. Sufficient to say that with 50+ years in the skilled end of the engineering game I was stil...
by UHJ200
Wed Dec 06, 2017 2:45 pm
Forum: Classified - Wanted & Sale
Topic: 10 inch wheels wanted.
Replies: 23
Views: 4127

Re: 10 inch wheels wanted.

I know where I can get them made but it would need to be a batch order, anyone interested?
by UHJ200
Sun Dec 04, 2016 4:13 pm
Forum: Cafe Rumi
Topic: Bol D'Or - New Project
Replies: 449
Views: 229084

Re: Bol D'Or - New Project

Hello Hugo, your ignition coils are not properly mounted, it must be an angle board, catalog chapter 10, part 15, then the problem is solved. My Tipo coils are mounted in much the same way as Hugo has them. There are differences in the drawing mounting and Hugo's (and my), coil mounting design. I a...
by UHJ200
Wed Nov 30, 2016 1:39 pm
Forum: Cafe Rumi
Topic: Bol D'Or - New Project
Replies: 449
Views: 229084

Re: Bol D'Or - New Project

hugo you can run off one battery as only power supply,just need live supply to each coil and one earth to engine. True but the idea of using two batteries is to separate as far as possible the two ignition systems. It is just possible that there might be some crossover as the existing flywheel syst...