Messages

Merlin, I could never explain to my seal parts house salesman the metal cased seal like my shocks have/had. He was clueless about an "Anchor-Packing" seal like is in my old instructions. I ended up using a standard rubber lipped seal, not metal cased, and ordered from McMaster-Carr. I'm not real confident it will stay in the shock. Do you have the modern CR part number for the shaft seal?

Thanks,
Frank

I'll second the question.....what's best for the RR '07? Is it rocky, soft, hardpack, clay, black & slick, all the above? I hope the soil is better than Park Hills as it'll be my first since 2002 at Park Hills.

Frank

SOLD!

My Bad, went over it pretty good taking some photos. A rear spoke is missing and the rear fender is a junk Petty. Remembered it being a decent alum like the front, old-timers kicking in. Cracked but very repairable front fork brace is on it.
Frank

In high school I considered myself un-breakable. If it took little brains and no one else would try it, I got the task. Always around cattle and a foolish horseless cowboy I often herded cows with my bike. Hard to rope one and ride though.

A guy who worked with my Dad had a horse and was allowed to let him roam in a neighbors harvested corn field/woods. He figured it would be cheaper than feeding the horse all winter. All went as planned until the farmer needed the horse gone so he could plant again. The mild-mannered saddle horse had turned wild. No body could catch the horse. They ran the devil all around the field trying to rope him out of the back of an old p/u. Beer WAS involved!

The problem was they were too "happy" to rope him and he soon tired of being chased aroud the field so he took to the woods and swamp to hide out. Here I came in the picture. They called my Dad and asked if I could herd him out of the swamp with my bike and wedge him close to the truck while they throwed ropes at him. So off we go.

Several attempts were made and I finally got tired of these drunks missing him. It wasn't a real big horse I thought. I've bulldogged bigger calves before. If I get real close to him I can just jump off this here bike and bulldog that devil down. Yeah, right, great plan. I gassed it and as I pulled by him, off I go, arms 'round his neck, plant my feet, nothing....I still got him around the neck but I can't get my feet planted to throw him, son-of-a-guns too blame tall, I don't have any leverage on him. His front legs have been kicking the daylights out of me the whole time with every step he takes. 'Fraid to let go, he'll stomp me as I go under him. 'fraid to hold on, El Diablo drags my tail across the field, though the woods, and finally stops standing in the swamp. We were both too tired to go anymore. One of the boobs finally arrives and puts a rope on him. I collapse in the mud beat all to crap.

At least they had beer left, Dad let me have one or two. Probably first time he and I ever drank a beer together, I was 15 or 16. I hurt for days.

Never jump out of a perfectly good airplane, never jump off a perfectly good bike.  

Frank

Harry,

I never knew you won a Gold, or rode the ISDT for that matter. Wow! I hope to hook up with you at the next STRA event we're both at and get you to tell me stories. I knew Charlie was involved in running enduros back when I was a kid and he and I swap stories of the old Cochran Enduro and the local nuts he worked with to keep that event running.

You who've ridden the ISDT are my long-time heroes, Merry Christmas!

Frank Renfroe

Harry,

I never knew you won a Gold, or rode the ISDT for that matter. Wow! I hope to hook up with you at the next STRA event we're both at and get you to tell me stories. I knew Charlie was involved in running enduros back when I was a kid and he and I swap stories of the old Cochran Enduro and the local nuts he worked with to keep that event running.

You who've ridden the ISDT are my long-time heroes, Merry Christmas!

Frank Renfroe

[is]

I've never pulled a Sachs sleeve, others that I have had the outer sleeve as the inner wall of the transfers. The transfers were only grooves once the liner was pulled out. If the Sachs is the same, some liner would have to be fitted. The wall thickness of the liner is important to prevent breaking at the spigot. I've opened the throat on a TL125 before to accept an XR200 cylinder to make a 168cc bigbore trials motor. A lot of people use a stepped down sleeve and a CB750 piston, the thin spigot will often crack, even at 145cc.

I've never used one but the new ceramic coatings are supposed to never wear. One of those companies has their US location not too far from me. That would be a possibility.

Could it be done with an iron barrel? Any problems with heat? Is the porting similar to the alloy "A" barrel?

Frank

Thanks Dr. Doug! I didn't know if there were 152 sleeves ever available. But I could use a early iron cylinder, I think a 100cc was recomended, and mill an alloy head, couldn't I? The 6A is salvagable with just a new 55mm bore and piston. Looking for maximium low-end, figured a 152cc was the way to go for that.
Thanks,
Frank

Do you have a clear lens cover? I don't have one now but I remember mine had a couple of lips on the back that held the rear of the bulb. You dropped the light in the front and covered it with a clear lens cover. 3 screws went from the front through holes in the clear cover and held it all tight. At least that's how mine was put together.

I've seen many that didn't have a cover but didn't look to see how the bulb was held in.

Was there more than one version?
 
Frank

Steve, I realize I stuck 50:1 in where I meant 40:1 on the 927.

IMO,[:0] I know it's not much difference between 32, 40, and 50:1 but I'd err towards 32:1 (4 oz/gallon) with the 927 if I were racing it. Oil costs less than motor rebuilds! I have no problem with the oil itself.

I'm pretty sure straight castor usually gets mixed at 24-32:1, I run synthetics at 50:1, therefore with a blend I'd lean towards the heavier mix.

I have heard, don't know how right they were, that the "927" stood for 9 parts synthetic to(2) 7 parts castor or vice-versa.

Frank

I think Dirk's asking, do the transfers line up between the cylinder and the cases or is matching needed? I think he used "milled" instead of "matched".

Frank

Maxima 927 is a semi-synthetic blend of castor, synthetic, and possibly normal oils with additives that keep everything from seperating. It doesn't cause ring sticking as normal(100%) castor may but smells like the real thing. Sweet!  The K2 that I mentioned is Maxima's best 100% synthetic.

50:1 with 927 may be too thin a mixture for longest engine life, it is a blend. Castor is usually mixed at heavier ratios than normal oils anyway.

I don't hesitate to use K2 at 50:1 in any air-cooled bike......if jetting is correct and timing isn't too far advanced. In modern water-cooled trials bikes we usually mix a 100% synthetic oil at 80:1, some use 100:1. Typically our bikes run over 5 years putting a lot of hours on them practicing, in competition, and ripping from section to section, before they need rings or bearings. That says a lot for modern oils at light mix ratios.

Looking at the posts after my 1st, I seem to have been declared an idiot. My statement was that min. octane requirement in my Penton manual was 95 for the 175. You can't buy 95 where I live. We tend to jet our bikes, in the sake of more power, a little leaner than factory settings. We also may advance the timing a smidgen to get more power. More power=more heat add too low octane and we get detonation, shortened engine (rod, bearings and possibly piston) life, possibly a heat sezure "meltdown".

My GasGas 280 pings like crazy on 93 pump gas, GasGas recommends 95 octane. I could never retard the timing enough and rejet to get pump 93 to not ping. It runs fine at 95+ octane.

The cheapest 95 I have been able to create is the 100 LL and 93 mix. 100LL has little lead compared to leaded race fuels. I don't get any lead fouling on my plugs with it like I got with VP110, VP c4 (112), and other leaded race fuel blends.

Each to his own. I love America!

Frank

My Jackpiner manual says to use a min. of 95 octane. I assume the same for others and with conservative jetting/timing.

It ran fine on half and half 100LL aviation fuel and pump 93. I never tried straight pump premium because the highest I could get was 93 and I'd rather not cook an engine.....jackpiner pistons are rather hard to come by. I wouldn't use straight aviation fuel either, it's made for very diferent operating conditions. It only costs about $3.50 a gallon versus $6+ for race fuel. I run this in all my bikes, vintage modern, and modern trials, I just vary the oil ratio. (Maxima K2 synthetic at 50:1 for mx/trail riding up to 80:1 for trials)

Frank

I used to run a gallon of VP c12 (112 octane)to 2 gallons of premium. It didn't run as good and I got some fouling plugs with lead deposits.

Do you have a clear lens cover? I don't have one now but I remember mine had a couple of lips on the back that held the rear of the bulb. You dropped the light in the front and covered it with a clear lens cover. 3 screws went from the front through holes in the clear cover and held it all tight. At least that's how mine was put together.

I've seen many that didn't have a cover but didn't look to see how the bulb was held in.

Was there more than one version?
 
Frank