Messages

Donny,

Thanks for the reply.  I've seen the Circle F pipes and I like them. But I've also seen a few used and NOS pipes and was curious as to just how different the pipes are from year to year?  Did they really change that much from year to year from 72-?

Thanks again,

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

I've discovered a trick for removing small heavily rusted screws. I haven't tried it on large screws.  I wanted to save the hand controls for my 125 SDT but all the screws were very rusted and seized.  

Not wanting to use heat, I realized that extreme cold should work just as well.  I had a can of "Freeze Spray" used in electronics (Sold by MCM Electronics).  This freeze spray cools to -60 F.  

The trick is to spray tiny amounts of the spray onto the screw head very slowly.  Spray a little, let it evaporate and frost form, then spray more let frost form.  Take your time.  Then once the spray seems to take a long time to vaporize, the screw is very cold and ready for removal.  

I was able to remove all the screws, without breaking them or stripping out any of the threads from the aluminum hand controls after they had sat out in the rain for 20 YEARS!

By the way, I've since discovered a company that sells a product which mixes freeze spray and penetrating oil.  I tried it and found it does not work nearly as well as freeze spray alone.  It appears the oil slows the evaporation of the coolant to the point it doesn't cool adequately.

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

quote:Originally posted by bentrims

Tom,

I have a tech tip for that right out of "Ripleys Believe It Or Not".
I DID have a washer go into the bottom end once. Placing a small magnet inside the rod channel against one of the counter balances and slowly turning it. The foreign metal item came out 1st turn....and then I inhaled a sigh of relief.
TB

Many years ago as a 16 year old, I had the head and cylinder off my 125 SDT and was attempting to install a new piston.  I dropped a clip down into the bottom end.  I was horrified at what I had done and was literally sick about it.  Without moving the crank, I waited for my father to come home from work for advice.  My father, held a master degree in Mechanical Engineering.  When he arrived home I explained what happened and he paused for a moment, walked over to the garage got a bottle of oil and poured a little on each crank lobe.  Then he slowly tuned the crank.  The clip, stuck to the crank lobe and rose to a point where I could grab it with a pair of pliers.  Needless to say, I was astonished.  

A year later, a friend did exactly the same thing with his Yamaha, I tried the same retrieval technique and it worked.  


Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

Thanks for posting the results.

I see Rusty Foard took a gold in the PV200.  Here's a story to go with that win.  Just a week or so before the race, I saw his Yamaha 175 in the back of his truck at work, it was a real beater, very rusty.  I wondered if it even ran.  A couple of us even laughed at it's condition.  He took it home, swapped out some engine bearings, then took it to the race without test riding it and obviously did pretty well.  

Rusty is a very resourceful and talented guy.

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

quote:Originally posted by john durrill

Clark,
 Dave sent out a PDF file with how everyone did.
 I can send it too you or try and post it here on POG . Would that work for you?
John D.

I'd also like to see the complete results.  

Jerry

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

[So, if anyone has an old 5 speed around which is in reasonably good shape. Let me know.]

Hey guys, thanks for the replies.

Yes, it's an early 72 125cc with the 1251/5A aluminum cylinder.  The original engine is in very rough condition and is likely not repairable.  To give you an idea just how bad it is, I haven't been able to get it apart.  It's completely seized.  Aside from getting the head off and the side cases, that's about all I've managed.  I'm not too bad with old engines but, this one is particularly bad.  

The rest of the bike WAS in very rough shape as well.  I've made a lot of very positive progress restoring the rest of the bike.  As I've said in previous posts, I would have never attempted to restore a bike in such poor condition but it's the first motorcycle I owned.  I rode this bike (not one like it, the very same bike) back in the early 70's as a kid and to be honest, it has become a bit of a legend among a group of friends and people I rode with as a kid and currently ride with.  It seems that whenever we get together, someone (not me) brings up "The Penton" which believe it or not is still occasionally used as a standard of comparison for performance. : )
 

Once I complete the restoration, I don't plan to ride it as a trail bike (I have a modern bike for that abuse) but, only expose it to to light use.  Much like some folks keep and an use an antique car.  Believe it or not, I still have my old Penton riding jersey.  Which mysteriously has shrunk by at least 50%. Must have been made from faulty material.

I've been taking lots of pictures and even some video which I'll edit into a video when I'm finished and post the link in the main section.

By the way, if any of you restore old devices with rusty fasteners, have you tried freezing the fasteners out?  The electronics industry sells "Freeze Spray" which when sprayed, will bring the temperature of small parts down to -60 F.  The most rusted screws will unscrew if still intact. I've used it with great success.  I've tried the combination freeze spray and penetrating oil sold at the auto parts store but haven't had much luck with it.  

So, if anyone has an old 5 speed around which is in reasonably good shape.  Let me know.

Thanks again

Jerry
1972 125 Six Day
CRF230 Nephew's
CRF450X

While I haven't tried removing bearing races with this method, have you considered using freeze spray?

I had a set of clutch and brake levers and perches which had been out in the weather for twenty years.  The steel screws were seized into the aluminum threads.  Since I'm restoring the first bike I owned, I wanted to try to save them.  I tried various penetrating oils, force, etc.  Then I tried freeze spray, the CRC brand failed miserably, then I tried this brand (see link).  It took out all the screws and the cable pins.

It worked like a miracle.  

http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&category%5Fname=3830011&product%5Fid=20%2D3000&CMP=googlpn

Use caution, it will freeze your skin instantly.  It chills down to about -40.  

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

I'd be interested in a kit for the A engine.  By the way what exactly is in the kit?

Thanks,


Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

FYI

I was unable to find the 72 Six Day chain adjusters but I was able to find a pair of 175 chain adjusters.  They are identical with one exception.  On a 125 Six Day, one adjuster has 17mm holes the other has 20mm holes.  The 175 has 17mm holes on both sides.  I was able to find a pair of 175 adjusters for $5 and I drilled out one side to 20mm.  They are now identical to the 125 Six Day in every way.


I'm throwing this out there with the hope it will help someone.

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

FYI, I literally tried a product, minutes ago, made by another company which claims to do the same thing.  I've used freeze sprays plenty of times before (I work in electronics) but, when I used it, the bolt didn't look cold like I'm used to seeing, even after 30 seconds of spray.  I touched it with my finger and it was just a little cooler than room temperature (not remotely close to being cold enough).  

The product I bought does not work.  I don't know if it's a bad batch or a poorly made product.  It's called CRC Freeze Off with super penetrant.

VMX1963, Thanks for posting this info, I'll look for the product you're using.  

May I ask where you purchased it?

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

I'd like to buy it. I've sent you an email with my info and a couple additional questions.

Thanks,

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

Speaking of ignition timing, back in the 1970's when I replaced my point ignition with the electronic unit on my Six Day (motoplat I think) the timing was WAY off.  When I kicked over the engine, it popped loudly and started sluggishly with a strange sound.  I popped it in gear and let out the clutch only to have the bike go backwards with a groan. The situation didn't register in my mind so I let the clutch out again and again it moved backwards.  The engine was rotating in the wrong direction.

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

[TLANDERS-"I feel the inside of the CMF airbox for grit after removing the filter and it is clean."]

I personally prefer the paper filters over the foam filters.  That's why I've stuck with the original paper unit that came with my Six Day.  

As TLANDERS said:

TLANDERS-"I feel the inside of the CMF airbox for grit after removing the filter and it is clean."

I also feel around inside the airbox occasionally, sometimes there is some fluff in there but I haven't felt any grit.

Here are some pictures.


FILTER
http://my.photodump.com/truchaos/Filter.jpg


AIRBOX
http://my.photodump.com/truchaos/AirBox.jpg



Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

I'm also looking for new rims.

I'm told the Radaelli Chrome Rims rims are still being made and are sold by Walridge Motors.  I have not had the time to call them get the details.  It appears they also sell the correct spokes and nipples.

Here's a link to their PDF format web catalog.

http://www.walridge.com/pdf/2007.pdf




Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X

["powder coating is over rated, especially if you intend to use it, if you do you may need to fix it and the powder turns to a bloody mess.........."]

"powder coating is over rated, especially if you intend to use it, if you do you may need to fix it and the powder turns to a bloody mess.........."


I agree and from my experience, powder coat failures are more dramatic than with painted surfaces.

When powder coat is chipped, the underlying metal begins to corrode and lifts the powder coat finish up such that more and more moisture can get under the powder coat and the corrosion runs and expands rapidly.  The result is that the powder coat finish lifts off in sheets.  If paint is chipped it will form a rust spot which is typically somewhat stable in comparison.

Apparently powder coat is good for reducing VOC emissions which is great but, I have had to throw away powder coated items because they became so badly pitted.

Jerry
1972 125 Six Day
CRF150
CRF230
CRF450X