Topic: 1975 Amen Chopper

[PeWe]

Same as for Mikuni VM29 to fit CB750?
2-3 rubbers very curved, Z-shaped. Mine bought 1983-84 with carbs were very soft, did not last long, less than a summer. They pulsated at idle.
I think Sudco still have them. Dynoman had for some years ago.

[seanbarney41]

Same as for Mikuni VM29 to fit CB750?
2-3 rubbers very curved, Z-shaped. Mine bought 1983-84 with carbs were very soft, did not last long, less than a summer. They pulsated at idle.
I think Sudco still have them. Dynoman had for some years ago.

yep, all Mikuni VM series from 26-32mm use the same rubbers.  John, one of the most important things you can do to preserve yours is to make sure the carbs are supported by something other than the rubbers...so they are not just bouncing around freely.  A loop of safety wire around the top frame tube is all it takes.

[BenelliSEI]

Same as for Mikuni VM29 to fit CB750?
2-3 rubbers very curved, Z-shaped. Mine bought 1983-84 with carbs were very soft, did not last long, less than a summer. They pulsated at idle.
I think Sudco still have them. Dynoman had for some years ago.

yep, all Mikuni VM series from 26-32mm use the same rubbers.  John, one of the most important things you can do to preserve yours is to make sure the carbs are supported by something other than the rubbers...so they are not just bouncing around freely.  A loop of safety wire around the top frame tube is all it takes.

On it! Thanks for the info, found them in the Sudco cat!

Update this afternoon. Sent an enquire, response received  and they have them available!

[PeWe]

I found 2 threaded steel inserts that just happened to fit perfectly into the VM29's holes on their outer sides. Tapped them in, bent 2 rods that I fastened with an M8 into carb, M6 to filter box ear.

This after they had bounced around for a while.
Everything found at my job many years ago.

Below bad photo

[BenelliSEI]

Per..... good idea. I might turn something down (with internal threads) and JB weld it in like that. Thanks!

[BenelliSEI]

Wasted a few hours today..... was cleaning out the master cylinder (unknown make). Nice and clean, plan to leave it “as is”. Touched one of the terminals to the micro switch (brake light switch) mounted on the underside and it just fell away. On close inspection, water had got in along a seam (two halves, glued together) the pin started rusting, split the case open and at the thinnest point it failed...

Mmmmm. Need a new master cylinder? Or an ugly pressure switch sticking out the end? Mounted the small switch in a vice and sliced open the offending edge with a sharp knife. Found some clean brass. Cut down the end of a male crimp on terminal and shaped it to fit in the slot. Got my soldering iron hot and pressed the two bits together with lots of flux and a drop of solder. It worked! Mixed up a small amount of JBWeld and sealed up the gap.

Silly amount of effort for a worthless part, but very satisfying and I can move ahead, without waiting for a parts delivery!

[BenelliSEI]

The chopper has a really heavy duty clutch cable. Large OD and too long. It hung out the front, loosely under the forks. Found a decent one in my junk bin, about 8” shorter. Got it fitted today, up tigh against the frame and nicely under and through the triple tree area. Much improved. Photo is the “before”.

[Tom]

John I bought these manifold rubbers about 6 years ago, have stored them in the dark in a parts tub for my Rickman build with VM29’s they are sticky a white coloured? Probably not usable? And were not cheap, rubber is not like it was.

[Tom]

They have upp on them

[BenelliSEI]

Tom..... try really hot water and dish soap. I use a coarse brush on the rubber and usually all that crap comes off. Have they hardened up too? Those are what I will order if mine don’t seem reusable. I noticed mine have the UPP on them too. Carbs off next.

[Tom]

John they are still soft, I will clean them up with hot soapy water and see how they come up?

[BenelliSEI]

Good luck. My wife has a good collection of scrub brushes under the sink, including a few different “bottle brushes” that are good for the inside. I usually do this in a large salad bowl, in the kitchen sink, WHEN SHE IS OUT!

[Tom]

Ha ha my beautiful wife works 3 days a week and that’s plenty of time to do what needs to be done, I am sure she would #$%* blue flames if she knew half of what has been washed up in the sink and dishwasher and baked in her oven.

[BenelliSEI]

Ha ha my beautiful wife works 3 days a week and that’s plenty of time to do what needs to be done, I am sure she would #$%* blue flames if she knew half of what has been washed up in the sink and dishwasher and baked in her oven.

I’m sure this true in a lot of places!

[PeWe]

My old VM29 rubbers I bought 1985 after the first set cracked are still black. No letters  on them.

[BenelliSEI]

My old VM29 rubbers I bought 1985 after the first set cracked are still black. No letters  on them.

Good to hear! Ordered a set today!

[BenelliSEI]

Pulled the front caliper today. Cleaned it up, polished the slides and blew on a bit of paint. I was concerned the pads were not fully engaged on the disc, but there is only a tiny corner with a sliver of material not wearing. Filed them off square and flipped their location. Scrounged a new banjo bolt and copper washers from my “supplies”.

When I was screwing it all back together, noticed the banjo bolt is not going in straight! Just a bit off. It’s been like that forever and pulls up nicely. A previous mistake? I’ll bet it’s going to leak...... When will I learn to leave stuff alone!

The Emgo “Honda” throttle unit arrived today. Clean, black, slim unit that takes both stock cables eliminated the stock bar switch (not in use) and mounts cleanly. The old  throttle tube fits nicely, so left the original grips in place.

[Don R]

 Reminded me of a jr. dragster we had. It had an aluminum brake rotor and wore the soft pads quickly. One day my Daughter said it wasn't stopping good. The pads were not covered 100% by the rotor and were touching face to face in the non worn areas. A quick file job and bracket adjustment and all was good. She learned the sound it made just before it needed new pads. Saved us a rotor or two. Later, I got a cast iron rotor and harder pads, way easier on parts
 stopped better and only slowed it a couple thousandths.   

[BenelliSEI]

Reminded me of a jr. dragster we had. It had an aluminum brake rotor and wore the soft pads quickly. One day my Daughter said it wasn't stopping good. The pads were not covered 100% by the rotor and were touching face to face in the non worn areas. A quick file job and bracket adjustment and all was good. She learned the sound it made just before it needed new pads. Saved us a rotor or two. Later, I got a cast iron rotor and harder pads, way easier on parts
 stopped better and only slowed it a couple thousandths.

Exactly! For the amount this one will get used, I think I can live with it?

[BenelliSEI]

Spotted this locally and one of my buddies went to see it. My project has changed some attitudes! In a few years, we’ll all be +70 years old. Be quite the “Club” if we all end up on choppers......

[754]

Fender looks bad on the back.. this reminds me, i should make some top nuts for the Savior, mine are missing. ..
 I will probably cut the Savior part off anyway... its looking like..   fair price on that ..hope he gets it..

 Sportbike ...fun on twisty roads.... at the constant threat of getting tickets..
 Chopper... fun everywhere..... all the time...

[Tom]

That’s Fugly, if it comes with a low number Sandy parts bike I guess I could live with it.

[BenelliSEI]

That’s Fugly, if it comes with a low number Sandy parts bike I guess I could live with it.

I doubt it, but I asked for the engine number just in case!

[britman]

Spotted this locally and one of my buddies went to see it. My project has changed some attitudes! In a few years, we’ll all be +70 years old. Be quite the “Club” if we all end up on choppers......

A long road trip will about 10 miles on a real good day.....

[BenelliSEI]

Spotted this locally and one of my buddies went to see it. My project has changed some attitudes! In a few years, we’ll all be +70 years old. Be quite the “Club” if we all end up on choppers......

A long road trip will about 10 miles on a real good day.....

Sadly, true.