Search found 104 matches

by twinshocker
Wed Nov 25, 2020 3:01 pm
Forum: Off topic
Topic: Star
Replies: 308
Views: 71069

Re: Star

Always keep in mind:

You don´t stop racing because you get old,
you get old because you stop racing !!

:mrgreen: :thumb
by twinshocker
Tue Nov 24, 2020 2:19 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 5200

Re: Fitting Allen screws to rocker box on B50.

I know i will be crucified after this, but when i found out that two of my threads in the head of my CCM were already damaged, i changed the whole thing to M8 with helicoils.

UNC , UNF, cycle, BSF.... way to much for my continental brain :roll:
by twinshocker
Fri Nov 13, 2020 3:18 pm
Forum: Off topic
Topic: Star
Replies: 308
Views: 71069

Re: Star

Ahhhh

I see ! :thumb
by twinshocker
Thu Nov 12, 2020 1:25 pm
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 910

Re: Clutch Pushrod???

I don´t know if there are tolerances or if someone has modified my clutch mechanism, but all i can say that a 6mm ball fits easily on my CCM
by twinshocker
Wed Nov 11, 2020 8:43 pm
Forum: Off topic
Topic: Star
Replies: 308
Views: 71069

Re: Star

Another question Beat.

Is there a reason that the steering head of your frame is not round ?
by twinshocker
Tue Nov 10, 2020 11:41 pm
Forum: Off topic
Topic: Star
Replies: 308
Views: 71069

Re: Star

Beat, i found this thread at the moment, and i am very impressed to say the least ! Believe it or not i live 15 Kilometers from Möggers, i am there every time except this year as i was in hospital myself. It would have been great to see you there <069 Sorry to hear that you crashed, this track is re...
by twinshocker
Tue Oct 27, 2020 1:08 pm
Forum: Off topic
Topic: If you ask me.......
Replies: 1
Views: 139

If you ask me.......

..... on top left is Vic Eastwood on the CCM pulling a monster-holeshot at the German 500GP in 76 ! :thumb ccmicon

Imageon top left
by twinshocker
Wed Oct 21, 2020 7:44 pm
Forum: Tech
Topic: B50 valve lifter to bare casting.
Replies: 37
Views: 2367

Re: B50 valve lifter to bare casting.

Wow great job!
I have to admit it looks like laser- or water jet cutted
by twinshocker
Wed Oct 21, 2020 2:49 pm
Forum: Tech
Topic: B50 valve lifter to bare casting.
Replies: 37
Views: 2367

Re: B50 valve lifter to bare casting.

That copper gasket looks nice ! how did you make it ?
I see you have a Rotax-CCM as well :thumb
by twinshocker
Fri Oct 09, 2020 8:45 pm
Forum: Tech
Topic: Valve Timing
Replies: 1
Views: 271

Re: Valve Timing

Yes thats the correct position :thumb
by twinshocker
Thu Sep 24, 2020 1:39 pm
Forum: Tech
Topic: Chinese Carburetor
Replies: 4
Views: 488

Re: Chinese Carburetor

An original Mikuni VM roundslide is not expensive and works on almost everything.
So i see no reason to buy some crap from China !
by twinshocker
Wed Jul 15, 2020 7:46 am
Forum: Tech
Topic: Kick start spring B50
Replies: 6
Views: 928

Re: Kick start spring B50

All i can say that mine is weak to.
Thats why the kickstarter is fixed to the frame with a rubber strap in the upright position ( classic 70s fix :mrgreen: )
by twinshocker
Thu May 28, 2020 10:15 pm
Forum: Tech
Topic: A kicker that actually folds away?
Replies: 23
Views: 2905

Re: A kicker that actually folds away?

His office girl spends most of the day at a lathe or milling machine.
seriously ! :mrgreen:
by twinshocker
Thu May 28, 2020 3:39 pm
Forum: Tech
Topic: A kicker that actually folds away?
Replies: 23
Views: 2905

Re: A kicker that actually folds away?

You can also go to "catalogues" then "CCM " and you see all the exploded views.
There you can click on a part number and it will list you the stock and modified PES parts if available
by twinshocker
Thu May 28, 2020 2:37 pm
Forum: Tech
Topic: Engine stand
Replies: 8
Views: 1177

Re: Engine stand

I have this one for all my engines

Image

Image

one arm can be adjusted to fit different engines and the whole thing can be fixed at different angles. An oil pan is also included
by twinshocker
Tue May 26, 2020 10:41 am
Forum: Tech
Topic: Foam Air Filter/Air Box For MX
Replies: 8
Views: 1208

Re: Foam Air Filter/Air Box For MX

This type of filter:

Image
by twinshocker
Tue May 26, 2020 10:23 am
Forum: Tech
Topic: Foam Air Filter/Air Box For MX
Replies: 8
Views: 1208

Re: Foam Air Filter/Air Box For MX

I made an aluminium air filter box on my 76 CCM and used a "slip on" type Twin Air filter which has the rubber directly on the foam. Advantage: You just need a hole in front for the rubber which has not to be airtight as the rubber mounts directly onto the carb. https://up.picr.de/38629955zk.jpg htt...
by twinshocker
Wed May 20, 2020 11:05 am
Forum: Tech
Topic: Long Con rod, Short Piston
Replies: 19
Views: 1840

Re: rocker box cap screws

beat wrote: Sat May 16, 2020 9:56 pm thanks moms, that I know it from my Goldie

DSCN1661.jpeg
DSCN1653.jpeg

beat
Beat is that piston from Dottikon ?
by twinshocker
Thu May 07, 2020 9:36 pm
Forum: Tech
Topic: Best Electronic Ignition
Replies: 23
Views: 3768

Re: Best Electronic Ignition

Yes its a NEB as said before.
I think it is also available with taper or spline
by twinshocker
Thu May 07, 2020 9:34 pm
Forum: Tech
Topic: oil volume
Replies: 13
Views: 2264

Re: oil volume

......... Some modern 250 four stroke MX bikes run well under a litre; 600 to 800 ml. 500 ml might be enough in a trials B25. I don´t know if this is somethimg to compare. first the 250-fourstroke is watercooled which means the temperature is way better spread over the engine , not so much hot spot...
by twinshocker
Wed Apr 29, 2020 10:14 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

I guess its not the first frame that you make when i see your equipment ? :thumb
by twinshocker
Tue Apr 28, 2020 8:57 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

This would be an off-topic question, except that PowerGlide was mentioned. I recently read somewhere(?) about a H*nda (race bike?) that used epicyclic (planetary) gearing. I can't picture such a thing, since it was a multi-speed box, 5 or 6 speed. Anybody here know of such an animal? Or did the aut...
by twinshocker
Mon Apr 27, 2020 7:47 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

So you convert it to LH shifting ?
by twinshocker
Sun Apr 26, 2020 4:53 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

Momus wrote: Wed Apr 22, 2020 7:37 pm Engine mounting is substantially done with spacers either side for alignment just in case........
Good idea not only for alignment.
I found it always a pain in the ass to remove and mount engines that are bolted directly into the frame. Even small spacers make life a lot easier. :thumb
by twinshocker
Wed Apr 22, 2020 9:55 pm
Forum: Tech
Topic: T25 Tappet Orientation
Replies: 6
Views: 1023

Re: T25 Tappet Orientation

SteveS wrote: Wed Apr 22, 2020 8:19 am ...........
I don't know if there is an engineering convention that dictates this orientation?
I think as the cam rotates counter-clocwise this angle gives the tappet a smoother lift or so..... thats my theory :roll:
by twinshocker
Tue Apr 21, 2020 10:22 pm
Forum: Videos
Topic: Eddie Kidd CCM Jump
Replies: 5
Views: 5243

Re: Eddie Kidd CCM Jump

I would say the area to stop the bike was optimistic to say the least :mrgreen:
by twinshocker
Tue Apr 21, 2020 10:18 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

.......However the aim of the exercise is to simplify and lighten the bike, clean up the engine's unpleasant hoses-fittings-tubes everywhere....... First of all i want to make clear that i don´t want to talk bad about your project , i like it when people think out of the box , so go for it !l :thum...
by twinshocker
Tue Apr 21, 2020 10:09 pm
Forum: Tech
Topic: T25 Tappet Orientation
Replies: 6
Views: 1023

Re: T25 Tappet Orientation

The thinner edge of the tappet ist always in front .
In the tapped guide there is no channel for the oil or so.
At full lift the top hole in the tappet gets out of the guide and a little amount of oil can get in there and leaves at the lower hole. That lubicates the guide bore.
by twinshocker
Wed Apr 15, 2020 10:46 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 12144

Re: Converting a B50 to wet sump.

Momus wrote: Wed Apr 08, 2020 9:17 am I'm making a new frame along the lines of a Clews Stroka.

I want it small and low.
My opinion:
No matter how tricky your additional oil reservoir under the engine is shaped there will be no smaller and lower design as OIF !
by twinshocker
Sat Mar 28, 2020 11:59 pm
Forum: Tech
Topic: CCM vs. Dick Mann modified B50 frame weight.
Replies: 3
Views: 3045

Re: CCM vs. Dick Mann modified B50 frame weight.

I don´t have the actual weights of these frames bur all i can say that CCM frames have extreme thin tubing and are very very light !!!
I cannot imagine that a modified B40 frame can beat this ccmicon
by twinshocker
Mon Mar 23, 2020 9:42 am
Forum: Tech
Topic: Best Electronic Ignition
Replies: 23
Views: 3768

Re: Best Electronic Ignition

Electrex :thumb

Image
by twinshocker
Wed Mar 11, 2020 12:01 pm
Forum: Tech
Topic: B40 Clutch Pressure Plate
Replies: 9
Views: 1710

Re: B40 Clutch Pressure Plate

polish the springs on the outside and put a reamer or something like that into the cups. springs tend to stick in the cups thats my experience.
The easier the springs move in the cups the better
by twinshocker
Wed Mar 04, 2020 3:30 pm
Forum: Tech
Topic: Odd clutch bearing arrangement.
Replies: 9
Views: 1667

Re: Odd clutch bearing arrangement.

At least he spreaded the 5 balls equally ! :mrgreen:
by twinshocker
Mon Dec 23, 2019 9:29 pm
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 35
Views: 5882

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: 35
Views: 5200

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: 35
Views: 5200

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: 35
Views: 5200

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: 35
Views: 5200

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: 635
Views: 165524

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: 1194

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 ?