Search found 71 matches

by twinshocker
Mon Dec 23, 2019 9:29 pm
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 35
Views: 2252
Flag: Germany

Re: B40 in OIF frame issues

............ One problem remains. How to join the carb to the air filter. The carb on the B40 sits quite far left of centre, so two acute angles to overcome. Has anyone done this before and can recommend how best to make a joining pipe? ........... Different bike , different engine, but you can buy...
by twinshocker
Mon Dec 09, 2019 12:01 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 1457
Flag: Germany

Re: Fitting Allen screws to rocker box on B50.

koncretekid wrote:
Sun Dec 08, 2019 11:32 pm
...........
You must have been editing your post as I was writing this one! Question answered; thank you.

Tom
Yes, i realized what you really meant shortly after the post :mrgreen:
by twinshocker
Sun Dec 08, 2019 11:28 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 1457
Flag: Germany

Re: Fitting Allen screws to rocker box on B50.

Thats just a protection for the plug and the ignition cable.
All i can imagine is that sometimes during a Motocross race someone touched the plug or cable with the knee and damaged it.
by twinshocker
Sun Dec 08, 2019 7:57 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 1457
Flag: Germany

Re: Fitting Allen screws to rocker box on B50.

Thats what i mean:

Image

the thread is almost 8mm and has 18 TPI so it should be 5/16"
by twinshocker
Sun Dec 08, 2019 7:44 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 1457
Flag: Germany

Re: Fitting Allen screws to rocker box on B50.

CCMs have allen screws as standard, i don´t now the thread . The head stay is also fixed with these screws, but you can not put all the screws in while the rockerbox is on the head in the frame. You have to put the screws into the rockerbox holes an then put the whole thing onto the head. Thats why ...
by twinshocker
Mon Nov 11, 2019 10:30 pm
Forum: Tech
Topic: Electric Start
Replies: 631
Views: 128193
Flag: Germany

Re: Electric Start

Beat i think if you use proven hydraulic parts from motorcycles, i.e. Magura Hymec or hydraulic clutch parts from actual enduro bikes the problem should disappear
by twinshocker
Mon Oct 28, 2019 10:42 am
Forum: Tech
Topic: Oil circuit question
Replies: 3
Views: 701
Flag: Germany

Re: Oil circuit question

OK thanks for the explanation.
That means there must be another oil channel from the oil pumt to the little hole in the timing cover ?
I mean the hole where the little O-ring sits to feed the crank ?
by twinshocker
Sat Oct 26, 2019 5:16 pm
Forum: Tech
Topic: Oil circuit question
Replies: 3
Views: 701
Flag: Germany

Oil circuit question

Today i took off the oil line fitting in front of the engine. I found something that disturbed me a little bit :shock: As you see in the pictures there is one hole in the thread and one hole at the bottom. To my understanding the oil comes from the pump via the hole in the thread and a certain amoun...
by twinshocker
Wed Aug 28, 2019 11:16 pm
Forum: Tech
Topic: Quaife or not ?
Replies: 3
Views: 998
Flag: Germany

Re: Quaife or not ?

Yes the pinions run on needle bearings.
On the NEB website they say you should state if you want 6, 13 of Quaife splines that why i asked.
So it seems to be Quaife thanks for that info
by twinshocker
Mon Aug 26, 2019 9:55 pm
Forum: Tech
Topic: Quaife or not ?
Replies: 3
Views: 998
Flag: Germany

Quaife or not ?

Hello, i am looking for a decent clutch for my 78 CCM. It is s three speed and i think its a Quaife Gearbox. At the end of the engine nuber it says Q3 which normally means Quaife. It has 11 splines, outer diameter approx. 18,9mm (may be 3/4" ) inner diameter approx 15,3mm. Can someone confirm that t...
by twinshocker
Mon Jun 10, 2019 8:37 pm
Forum: Tech
Topic: Getting out the little bearing of the layshaft
Replies: 9
Views: 2137
Flag: Germany

Re: Getting out the little bearing of the layshaft

Yes Steve i was afraid of that too, i realized that the casing is relatively thin there..
So i made sure that the rear side sits on a piece of wood and it worked well.
by twinshocker
Mon Jun 10, 2019 2:22 pm
Forum: Tech
Topic: Getting out the little bearing of the layshaft
Replies: 9
Views: 2137
Flag: Germany

Re: Getting out the little bearing of the layshaft

The bearing will come out by "hydraulic "force

Image

then you fill in some more plastlin and repeat until the bearing falls out :ban

Image
by twinshocker
Mon Jun 10, 2019 2:20 pm
Forum: Tech
Topic: Getting out the little bearing of the layshaft
Replies: 9
Views: 2137
Flag: Germany

Re: Getting out the little bearing of the layshaft

then you fill the bearing with plastilin

Image

With a hammer you drive the rod into the bearing

Image
by twinshocker
Mon Jun 10, 2019 2:18 pm
Forum: Tech
Topic: Getting out the little bearing of the layshaft
Replies: 9
Views: 2137
Flag: Germany

Getting out the little bearing of the layshaft

If you don´t have a special puller to get this bearing out here is a simple wayto do it:

Image

you make a steel rod that fit tightly into the bearing and go to your local toy shop to get some plastilin

Image
by twinshocker
Mon Mar 25, 2019 1:06 pm
Forum: Tech
Topic: B44 Crank Ball Bearing - Sludge trap removal
Replies: 15
Views: 2507
Flag: Germany

Re: B44 Crank Ball Bearing - Sludge trap removal

csx355 wrote:
Sun Mar 24, 2019 9:36 pm
..............
They can feel loose until at running temperature and speed.........
I never had a C3 bearing that felt "loose"
by twinshocker
Mon Jan 21, 2019 7:25 pm
Forum: Tech
Topic: Electric Start
Replies: 631
Views: 128193
Flag: Germany

Re: Electric Start

beat wrote:
Fri Jan 18, 2019 7:13 pm
..........
today arrived the gears from PES.........
Puh...just in time before the Brexit ! :uhu

Ok you are swiss, so nothing will change for you :thumb
by twinshocker
Thu Nov 29, 2018 10:03 am
Forum: Tech
Topic: Castrol R removal
Replies: 2
Views: 1037
Flag: Germany

Re: Castrol R removal

I switched from R40 to normal mineral oil on my CCM a couple of seasons ago , did no cleaning and had no problems
by twinshocker
Tue Nov 27, 2018 10:53 pm
Forum: Tech
Topic: B25 / B50
Replies: 7
Views: 1573
Flag: Germany

B25 / B50

Hello, the situation is as follows: A friend thinks about buying 79 CCM rolling chassis without engine. The seller has also a B25 engine. Would it be possible and make sense to fit this engine into the CCM frame ? I know that Alan Clews built a 250 for his son to compete in some sort of youth Motocr...
by twinshocker
Sat Nov 03, 2018 2:38 pm
Forum: Tech
Topic: cam followers
Replies: 55
Views: 10849
Flag: Germany

Re: cam followers

Hello Claus,

i had the same problem with my CCM.
Grinded the marks on the followes away on a grinding machine, polished them and used them without any problems.
Make sure that the followers are fixed rectangular in the on direction and have the right angle in the other while grinding.
by twinshocker
Wed Oct 10, 2018 2:46 pm
Forum: Tech
Topic: How thin can a liner be ?
Replies: 5
Views: 1488
Flag: Germany

Re: How thin can a liner be ?

Ok thank you guys, seems to be no problem then..... :thumb
by twinshocker
Tue Oct 09, 2018 9:43 am
Forum: Tech
Topic: How thin can a liner be ?
Replies: 5
Views: 1488
Flag: Germany

How thin can a liner be ?

Hi everybody, my CCM needs an new piston. At the moment it has a 87mm bore, the outside diameter of the liner is 92,7mm. A 87,5mm piston is not available only 88mm, that means the liner will be 2.35mm thick then. My engine machinist says he would not be afraid to do this, any experiences with this ?...
by twinshocker
Sun Sep 09, 2018 6:39 pm
Forum: Tech
Topic: Oil separating
Replies: 9
Views: 2026
Flag: Germany

Re: Oil separating

beat wrote:.............
what brand of oil are you using in the clutch :?:
I use ATF, no specific brand.
But i think the NEB clutch will work fine with any good quality motor oil für wet clutches (JASO MA , JASO MA1 , JASO MA2 specification)
by twinshocker
Sat Sep 08, 2018 1:18 pm
Forum: Tech
Topic: Oil separating
Replies: 9
Views: 2026
Flag: Germany

Re: Oil separating

The NEB clutch runs in oil as well. I just closed the two holes with the mesh in them with aluminium plugs and use ATF in the primary case. The crank bearing is standard , so a little bit of oil can come through there. You could use bearings with a cover there ( the 2RS type ) if available and remov...
by twinshocker
Sat Sep 08, 2018 1:13 pm
Forum: Tech
Topic: NEB clutch questions
Replies: 7
Views: 1838
Flag: Germany

Re: NEB clutch questions

Another note:

MY NEB clutch is in a CCM with a reatively long Magura lever at the bars, i think the BSA levers are different.
I my opinion the NEB clutch needs less travel than the original , so may be you can try another lever as well.
by twinshocker
Thu Sep 06, 2018 4:56 pm
Forum: Tech
Topic: NEB clutch questions
Replies: 7
Views: 1838
Flag: Germany

Re: NEB clutch questions

I turned the screws in until they stop and yes i had to machine the clutch cover on the inside as well.
Mine goes a little bit lighter than the original clutch, so may be the cable will make the difference.
by twinshocker
Sun Aug 12, 2018 7:32 pm
Forum: Off topic
Topic: Mountaineering in the Le Touque Sand Dunes
Replies: 3
Views: 1745
Flag: Germany

Re: Mountaineering in the Le Touque Sand Dunes

Today Le Touquet is not the same races as a couple of years before when you went down the beach for several miles, passed the legendary funnel "Le Goulet" and then back through the dunes. The lap was way longer than today. After competing there a couple of times with my Rotax-CCM i rode there with m...
by twinshocker
Fri Jul 20, 2018 12:10 pm
Forum: Tech
Topic: B50 Kickstarter: like cutting cheese
Replies: 15
Views: 3604
Flag: Germany

Re: B50 Kickstarter: like cutting cheese

May be but all i can say is: Many many years ago i was at an CCM-only anniversary race at Brill. All the Englishmen, Welsh and Scotsman were checking their clutches between the races while my swiss friends and me had a cool drink. We all ran ATF after the advice of our local CCM Guru Hansruedi Z. I ...
by twinshocker
Fri Jul 20, 2018 9:02 am
Forum: Tech
Topic: B50 Kickstarter: like cutting cheese
Replies: 15
Views: 3604
Flag: Germany

Re: B50 Kickstarter: like cutting cheese

I found out that the best way to safe an original clutch on a B50 Mxer is to close the breather holes to the primary cover with aluminium shims and run ATF in the primary cover.
You have to modify the engine breather tube then
by twinshocker
Sat Jun 09, 2018 1:12 pm
Forum: Tech
Topic: New Carb
Replies: 5
Views: 2257
Flag: Germany

Re: New Carb

Oh sorry, i was talking about the MK II Amal, may be the problem exists with the MK I as well ?
by twinshocker
Sat Jun 09, 2018 1:09 pm
Forum: Tech
Topic: New Carb
Replies: 5
Views: 2257
Flag: Germany

Re: New Carb

:thumb

Make sure that you have the chromed brass slider not the crappy zinc part which will get perilous after a while
by twinshocker
Tue May 08, 2018 11:22 am
Forum: Tech
Topic: sealing header pipe at head
Replies: 36
Views: 12354
Flag: Germany

Re: sealing header pipe at head

Final solution , no more blowby for ever :

Image

Image
by twinshocker
Fri Apr 13, 2018 8:59 am
Forum: Tech
Topic: B50 Crankcase Breather Hole Gauze
Replies: 4
Views: 1513
Flag: Germany

Re: B50 Crankcase Breather Hole Gauze

Mine looked definitely different, they were brass and not so fine.

By the way : i closed both of these breather holes with aluminium discs, run ATF in the primary case and my engine breahtes through the timing side
by twinshocker
Sun Apr 08, 2018 8:05 pm
Forum: Tech
Topic: slipping kick start
Replies: 6
Views: 1868
Flag: Germany

Re: slipping kick start

I learned that with the origina BSA clutch you need every little bit of spring pressure you can get. turn the nuts in as deep as possible so that you can still safetywire them ant the plate lifts evenly. Another quick fix is to sandblast the steel discs of your clutch, the rougher the better. But th...
by twinshocker
Wed Apr 04, 2018 8:30 pm
Forum: Tech
Topic: BSA B50T Valve clearance question.
Replies: 23
Views: 4442
Flag: Germany

Re: BSA B50T Valve clearance question.

i never checked that , only looked at them .
But i have the feeling that the result will be alarming !! :shock:
by twinshocker
Mon Apr 02, 2018 9:41 pm
Forum: Tech
Topic: BSA B50T Valve clearance question.
Replies: 23
Views: 4442
Flag: Germany

Re: BSA B50T Valve clearance question.

Beat i had the same odyssey as you , my CCM always rattled and still does. I worked on the rockers, valves, valve guides, cam, cam bearings, tappets with no success it doesn´t stop to make that noise. The "thackery washers" are very tight, almost flat with minimal axial play. I never touched the pus...
by twinshocker
Thu Mar 29, 2018 2:11 pm
Forum: Tech
Topic: BSA B50T Valve clearance question.
Replies: 23
Views: 4442
Flag: Germany

Re: BSA B50T Valve clearance question.

beat wrote:I set my valve clearance to the point as I can just rotate the pushrods with my fingers, but so to say no clearance is feeling........
Sounds a little tight then :mrgreen:
by twinshocker
Tue Mar 06, 2018 3:07 pm
Forum: Tech
Topic: Electric Start
Replies: 631
Views: 128193
Flag: Germany

Re: Electric Start

Jack Gifford wrote: Do I recall that you made the slave housing from a block of aluminum? You're quite an artist with that mill!
Absolutely ! it looks like it came from a CNC machine :thumb

Beat do you have a "Drehtisch" on that mill ?
by twinshocker
Fri Mar 02, 2018 2:27 pm
Forum: Tech
Topic: better kickstarter for CCMs
Replies: 7
Views: 2045
Flag: Germany

Re: better kickstarter for CCMs

Thats the website i was searching thanks a lot !
by twinshocker
Tue Feb 27, 2018 2:44 pm
Forum: Tech
Topic: better kickstarter for CCMs
Replies: 7
Views: 2045
Flag: Germany

Re: better kickstarter for CCMs

i finally found it !! :ban
by twinshocker
Tue Feb 27, 2018 2:38 pm
Forum: Tech
Topic: better kickstarter for CCMs
Replies: 7
Views: 2045
Flag: Germany

Re: better kickstarter for CCMs

Thanks so far.
i will get in contact with Mark, didn´t know that he makes them, they are not on his list