No room for more trucks
- Thread starter GB SISSON
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GB SISSON
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Ok, my 58 tooth rear sprocket came yesterday afternoon. That's up from a 50 tooth I originally used. The lower gearing should get me higher revs, which I hope will do two things.
1) Climb the hills while keeping the revs high enough to act upon the centrifugal weights that squeez the forward belt in the primary.
2) Once I'm on the flats I should be able to accelerate with the two pulleys changing size (front pulley 'gets bigger' and rear smaller.
It's all quite complex and I'm in the guesswork stages. I am also going to make a 54 tooth, 1/2 way in between by welding my suzuki bolt pattern into a harley 54 tooth sprocket. Both second hand on Ebay. I know many hate Ebay, but out here on an island (50.00 ferry ticket for car/driver) and price of fuel (gas here 6.79 gal) it's amazing how we can get stuff with free shipping to the base of the mountain road, 1/2 mile away. Will report back on hill climbing. Glad my wife insisted on a helmet, as the fog upstairs is bad enough now without a head injury. Oh and I just read in the manual that this little diesel develops it's full power at 3600 rpms. Clever people, them Germans.
1) Climb the hills while keeping the revs high enough to act upon the centrifugal weights that squeez the forward belt in the primary.
2) Once I'm on the flats I should be able to accelerate with the two pulleys changing size (front pulley 'gets bigger' and rear smaller.
It's all quite complex and I'm in the guesswork stages. I am also going to make a 54 tooth, 1/2 way in between by welding my suzuki bolt pattern into a harley 54 tooth sprocket. Both second hand on Ebay. I know many hate Ebay, but out here on an island (50.00 ferry ticket for car/driver) and price of fuel (gas here 6.79 gal) it's amazing how we can get stuff with free shipping to the base of the mountain road, 1/2 mile away. Will report back on hill climbing. Glad my wife insisted on a helmet, as the fog upstairs is bad enough now without a head injury. Oh and I just read in the manual that this little diesel develops it's full power at 3600 rpms. Clever people, them Germans.
petehoovie
Well-known member
Randy in ca
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GB SISSON
Well-known member
Here's another picture of your old guy on his bike. It's barely visible in your picture, but very up front in this one - the oxygen tank attached to the front forks that he apparently needed to keep riding!!
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I thint it was Tim McGraw that sang a song called 'I wanna go out like that'. Rushing to ferry (In woodie, not bike) otherwise I'd look it up!
pistonbroke
Well-known member
Gary , You said when you get it out on the flats? I rode a bicycle all over the San Juans back in 1999. Other than Lopez I cant recall any flat spots. LOL Tim PS. That photo of the store at Olga brought back many fond memories ,thank you
Gary, it sounds like you have one of those generic belt-drive torque converters on your diesel. If it's like the ones i've fooled with, there are three positions in the driven clutch hub into which the torsion spring tang may be inserted. It's quite likely in the center position. Moving to the tighter position will give it a lower ratio, while the looser will make it higher, yielding more speed. It may change it more than you want, tho.
If you only have the one-piece clutch, ignore most of my babble. Ha ha
Al Hook
If you only have the one-piece clutch, ignore most of my babble. Ha ha
Al Hook
You can also increase the stall speed of the drive clutch by tightening (shortening) the spring. That might be all you need to keep in the engine's power band. Those clutches are tunable by quite a bit. Of course, changing the overall gear ratio (rear sprocket) would change things, as well.
Al Hook
Al Hook
GB SISSON
Well-known member
Yes, a Chinese clone of the comet clutch. It was quite the learning curve the first time I fired it off with the drive chain on the sprockets and the belt on the two split sheaves. This diesel's only means of shut off is the space an inch behind idle on the trottle lever. My twist throttle didnt have range enough to accomodate the shut off position. I envisioned leaned over the side cranking, she fires and the drive pulley squeezes the pulley, I either fall off and the bike lurches away, or I stay onboard increasing in speed, no way to shut it off, no clutch lever in my left hand, just have to stay on and somehow ride it out til I ran outa fuel. As fate would have it, everything was at ease at idle and in it's first trials I actually had to walk it along with my feet pushing off to get it up to speed. Then it gradually increased speed til I chickened out. This was at the gas engine/tractor event in Lynden Wa. Total flat parade grounds for the antique tractor guys ... I stopped counting at 500 tractors a few years back. I am very interested in learning the methods of tuning these clutches. I know they are color coded. I already bought a yellow spring to replace the red one in the rear sheave. I see there are 3 different spring rates for the fwd pully on the motor. And yes, the new yellow spring is in the middle position as was the red.
GB SISSON
Well-known member
I think it belongs to a retired cabinetmaker in Pennsylvania. I may have even discussed it with him shortly after I completed mine. Well, 'completed' might be exaggerating, as just like my home I built 48 years ago that has no baseboards. It could happen.
GB SISSON
Well-known member
While all this tech talk about stall speed and ratios is quite off topic, your expert advice has led me to do further research, which finally ended with a personal cell number of the most senior tech advisor at the Comet factory in Janesville Wisconsin. Eddie, what a prince of a guy. Got his number from Paige at Go-Kart Supply in Kiethvilla La., Who'd Been working there since age of 17, now 61. Reminds me of my early V8ing before 'online sales'. Visiting with the likes of Jere Jobe and many other experts on the phone from my distant cabinetshop on a mountainside. Loved the guys at Joblot Automotive and Bob Selzam in NJ. Always sounded gruff when I fitst called... "PARTS!" then we'd visit for a half hour. Those were the days. All done with personal checks. Bob would stick a hand written invoice into the cosmoline scented pre-used box, and have the parts shipped that afternoon. Sigh...
GB SISSON
Well-known member
Those flat spots are few and far between. When I was looking for a T-5 from an S10, I was often told the S10 version had a first gear that was so low it was useless. Not around these here parts...
51504bat
Well-known member
I bought 2 NOS front fenders and a grille for a 1940 1 1/2 ton Ford from Bob Selzam from his ad in Hemmings around 30 years ago. I had an old Army buddy who lived nearby check them out - all good. Bob shipped them freight collect in refrigerator boxes to a friend's auto repair shop. I didn't end up using them. Sold them to a guy in Norway who was restoring his grandfather's 1940 flatbed that the Nazi's seized when they invaded Norway. Very interesting thread about it on the FTE including copies of original Nazi paperwork with a ******** stamped on one of documents.
https://www.ford-trucks.com/forums/1607407-my-long-lasting-40-project.html
tubman
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They censored "hakenkreuz"?
GB SISSON
Well-known member
I thought the same thing. Can I assume the word in quotes is German for that cross with 90 degree legs that is associated with a very dark time in world history. Oh wait, part of 'associated' is not allowed. How about 'chevrolet' or 'small block'? Now those actually ARE bad words in our community. BTW, followed that thread on Ford Truck Enthusiasts forum. Talk about starting with a total wreck!
51504bat
Well-known member
The word that got censored was the word for the insignia that the Germans used on arm bands and other propaganda beginning with the letter S