Working hard to complete my Alpina, need to find out if it will spark. Then I'll finish off the exhaust system. Thanks for all the advice I have received.

Mark, coming along very nicely!!

Be careful of that what appears to be a very long clutch arm, may just be the photo, but it really needs to

be as straight a pull as possible.

Beautiful work and attention to detail.

My last M85 was just OK compared to yours.

Have a good day

Larry

After getting some (once again) great advice from Larry, I've decided to find some time and just enjoy my Sherpa, rather than continuing to tear it apart hunting ghosts!  I bet I discover my riding ability is WAY BELOW this bike's ability! 

 

I did get a chance to break out the paint remover and take off about three coats of black paint on the head.  Now it's looking stock and oh, so pretty!!!  Love my shiny Bultaco!

 

Happy Monday!

I picked up the frame of my M166 Alpina from the powder coating firm this morning. Spent the day starting the final build. Forks and rear shocks only fitted temporary as I still have to polish and paint these items. Mudguards are original and are stainless steel.

 

Stuart

Stuart, Looking good, carry on and keep us posted. Interestingly we just machined a 166 cylinder ( standard bore) to match the deck height

of a 199, we shall see how all that works out for the Sherpa T getting back to where it started bore wise.

Some slight differences in port timing however the exhaust port came out within a few thousandths of the same.

Intake will have a little more duration.

At this point the thing starts nicely. The timing will be made correct before any carb tuning will take place.

 

Stay tuned

 

Have a good day

 

Larry

Well fellows , nothing going on huh???

Finished up the M125 ref,pg 11 this topic.

Spit and polish, EQUALS happy FRIEND

Larry

Hi Larry,

That looks really good.

Regarding clutch arms, it's around 75mm between the centers is that too long?

R Mark

Mark, my clutch arm is roughly 59mm between centers, I also had  front brake lever

that some Sherpa Ts' came with and it is around 75mm c/c.

 

I believe the longer lever will work, however you might take a look at your front brake lever.

 

Which ever you use, rig it so the cable pulls as straight as possible.

 

The arm works best for me when setting as near perpendicular as possible.

 

Have a nice day

 

Larry

 ^{Due to all my messing about with pipes and whatever  I needed to come up with an air box/carb hose}

^{that would get around a M92 style frame re. down tube/straight intake manifold.}

^{My good friend @ the auto parts store took the time to find this hose for me.}

^{Picture0725150942_1.jpg}

^{after some cut and fit}

^{Picture0724151535_1.jpg}

^{hose is Gates #20849}

^{Picture0724151420_1.jpg}

^{Have a nice day}

^Larry

 Thanks again Larry!

This week! I have been mostly recording the engine sound of my Bultaco!

 

I did this because I have the intention of doing a complete engine rebuild and to have an idea of the improvements I made.

 

So, if anyone hears something and thinks: wait a minute! I know what that rattle is, please let me know

 

Edited December 6, 201510 yr by guys

Yes lots of piston slap when cold and warm. The modes of piston rattle are different at different RPMs and temperatures which is why the noise changes

Are the rings freely moving, or gummed up?

The cylinder fins sounded like they were ringing. Are the fin dampers OK? It might just be the way the phone records the sound

Possible noise from crankshaft main bearings

Could not hear any conrod or primary chain noise

Yes lots of piston slap when cold and warm. The modes of piston rattle are different at different RPMs and temperatures which is why the noise changes

I was thinking the same but wasn't sure;

 

Are the rings freely moving, or gummed up?

They might be, because at a inspection I noticed a serious build up of black sticky stuff in the exhaust port and on the crankshaft bearings (when replacing the crank seals)

 

The cylinder fins sounded like they were ringing. Are the fin dampers OK? It might just be the way the phone records the sound

The dampers are old and not complete. Already had the intention of replacing them.

(because I came very close to the engine with my camera, the rattles were a bit louder than normal)

 

Possible noise from crankshaft main bearings

Going to replace them also when the engine is dismantled

 

Could not hear any conrod or primary chain noise

Primary chain was already replaced.

 

Thanks for your thoughts and advice.

 

Edited December 5, 201510 yr by guys

This week I also have been mostly putting new stickers on the fuel tank, riding around a bit and taking pictures of my bike, which is nice.

 

Larry by modern seals i mean same seals as what a modern trials bike would  have.014.jpg

 

Hy bondy, can i ask you some information about the oil seals for this modern seals forks? 

Do you remember which kind they are and/or where are you found it?

Thanks in advance

Hello i got the modern seal off a friend but you can get them offebay. There just a double lipped seal with a dust cover that gose on top easy to fit i do still have a set for my 198b forks.