Author Topic: 1975 Amen Chopper (Read 29849 times)

Medyo Bastos · « **Reply #150 on:** April 27, 2021, 04:23:12 PM »

Choppers are addictive, hey?

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BenelliSEI · « **Reply #151 on:** April 27, 2021, 06:16:38 PM »

Quote from: Medyo Bastos on April 27, 2021, 04:23:12 PM

Choppers are addictive, hey?

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Yes! It’s a beast, and pleasantly different than all my other projects..... today I noticed the front disc is such a small diameter that the brake pads are only about 60% in contact with the disc surface. Either the caliper needs to be closer to the axle centre (very unlikely), OR I need a larger disc. Looks like it came off a go cart. Mmmm.

Also been checking out “Hensley Performance” (Gary Hensley). Based on the KZ1000 carbs, the engine is likely closer to 900cc’s than 736. The original owner told me it has “alloy rods and big pistons”. Could not recall the details.

Medyo Bastos · « **Reply #152 on:** April 27, 2021, 06:41:08 PM »

I can’t see any of your pics. Have you id’d the wheel, disc, or caliper? Is it a hurst airheart caliper? The make different sized rotors.

***EDIT***

Is that a dual disc hub? I’m noticing 6 bolt holes on the opposite side. That looks like a hallcraft hub. h/a rotors should fit, and are still available!

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BenelliSEI · « **Reply #153 on:** April 28, 2021, 04:26:15 PM »

Quote from: Medyo Bastos on April 27, 2021, 06:41:08 PM

I can’t see any of your pics. Have you id’d the wheel, disc, or caliper? Is it a hurst airheart caliper? The make different sized rotors.

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Good question, I have no idea! When I can post pictures I will show it to you.

BenelliSEI · « **Reply #154 on:** April 28, 2021, 04:27:02 PM »

Picture attempt...

It’s working! Will post photos tomorrow

Medyo Bastos · « **Reply #155 on:** April 28, 2021, 04:51:36 PM »

What did you do differently?

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BenelliSEI · « **Reply #156 on:** April 28, 2021, 06:18:16 PM »

Reported the problem and it’s been fixed?

Finished up the tune up and put all the electrics back. Added a few fuses and did some clean up. Original tail light bracket painted, new tail light (repro) and back together.

BenelliSEI · « **Reply #157 on:** April 28, 2021, 06:22:17 PM »

Quote from: Medyo Bastos on April 27, 2021, 06:41:08 PM

I can’t see any of your pics. Have you id’d the wheel, disc, or caliper? Is it a hurst airheart caliper? The make different sized rotors.

***EDIT***

Is that a dual disc hub? I’m noticing 6 bolt holes on the opposite side. That looks like a hallcraft hub. h/a rotors should fit, and are still available!

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Can you see pics now? Appreciate if you recognize the front brake? I’ll take good pictures tomorrow.

Tom · « **Reply #158 on:** April 28, 2021, 06:59:31 PM »

Yes can see your pics now John, the bike is looking Awesome

BenelliSEI · « **Reply #159 on:** April 29, 2021, 12:06:35 PM »

Quote from: Tom on April 28, 2021, 06:59:31 PM

Yes can see your pics now John, the bike is looking Awesome

Thanks Tom! Here’s a “bling” shot. All the chrome from the headers back, is clean and polished (and there is lots). The switchbox now matches the red on the rest of the machine. The footboards have disappeared and are replaced by the original Amen pegs. Found a reproduction tail light and repaired/ painted the bracket. All the hardware that was painted black was stainless, so I knocked off the paint and polished them up.

BenelliSEI · « **Reply #160 on:** April 29, 2021, 12:10:03 PM »

This switchbox was raw aluminum. Considered relocating it under the carbs, but decided to keep the unit “as built”. The red paint helps it disappear a bit! Added a couple of fuses and cleaned up some over heated wiring while it was apart!

BenelliSEI · « **Reply #161 on:** April 29, 2021, 12:13:13 PM »

Added a horn and button (there never was one) to the empty LHS bar control.

BenelliSEI · « **Reply #162 on:** April 29, 2021, 12:16:59 PM »

Quote from: Medyo Bastos on April 27, 2021, 06:41:08 PM

I can’t see any of your pics. Have you id’d the wheel, disc, or caliper? Is it a hurst airheart caliper? The make different sized rotors.

***EDIT***

Is that a dual disc hub? I’m noticing 6 bolt holes on the opposite side. That looks like a hallcraft hub. h/a rotors should fit, and are still available!

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M/B ....... Here is a picture of front brake. have not dug into it yet. Do you recognize it? Think I can find a larger diameter disc? The caliper can’t be moved closer to the axle centre, but the pads are not fully engaged.

BenelliSEI · « **Reply #163 on:** April 29, 2021, 12:19:55 PM »

New tail light and “fresh” lic. plate mount. My red Tremclad rattle can is an excellent match. Note that even the sprocket nuts and locktabs have been chrome plated! Nothing held back by the original builder!

Just had to reuse the “bullet” hardware on the lic.plate. Crazy stuff.

754 · « **Reply #164 on:** April 30, 2021, 12:04:27 PM »

I can probably machine an adaptor for bigger rotor, need to know bolt pattern and offset.
Maybe look for a used rotor off a dual purpose bike , then we can build the center carrier..

BenelliSEI · « **Reply #165 on:** April 30, 2021, 12:25:20 PM »

Quote from: 754 on April 30, 2021, 12:04:27 PM

I can probably machine an adaptor for bigger rotor, need to know bolt pattern and offset.
Maybe look for a used rotor off a dual purpose bike , then we can build the center carrier..

Frank.... good idea! I was looking at it today, thinking along those lines. You may have noticed the caliper mount is “clamped” to the two bars and could be moved up a bit (away from axle centre) allowing some extra flexibility on the disc diameter.....

There is a bike “bone yard” (Cycle Salvage) not far from my farm. The guys usually let me prowl around in the back. When the weather improves, I’ll go see what I can find...... it’s a very thin disc, with almost no offset.

CBJoe · « **Reply #166 on:** April 30, 2021, 05:31:45 PM »

I freaking love those style chopper frames with that rear shock setup. Bike looks great

Don R · « **Reply #167 on:** April 30, 2021, 06:38:48 PM »

Polishing the diamond, I like it. I like to pay homage to the PO's and just improve their bike except when their work has a major negative effect. (My opinion though)
My K2 had +6" forks lowering blocks and a hog rim. Handlebars like if you put your hands straight forward and close together with your thumbs up I didn't even like moving it around the shop. I got some cb400F bars for it, sorry Dick.

scunny · « **Reply #168 on:** April 30, 2021, 07:11:36 PM »

Damn, I want a chopper now. Have mercy on my soul.

BenelliSEI · « **Reply #169 on:** April 30, 2021, 07:32:24 PM »

Quote from: scunny on April 30, 2021, 07:11:36 PM

Damn, I want a chopper now. Have mercy on my soul.

STOP LOOKING! That’s what got me here.......!

Medyo Bastos · « **Reply #170 on:** April 30, 2021, 07:36:37 PM »

Quote from: scunny on April 30, 2021, 07:11:36 PM

Damn, I want a chopper now. Have mercy on my soul.

I’m sure I’ve got at least 1 I could spare!

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BenelliSEI · « **Reply #171 on:** April 30, 2021, 07:37:58 PM »

Quote from: CBJoe on April 30, 2021, 05:31:45 PM

I freaking love those style chopper frames with that rear shock setup. Bike looks great

I agree! Must be a lot of preload on those springs! I think I’ll leave them alone for now.

Medyo Bastos · « **Reply #172 on:** April 30, 2021, 07:41:15 PM »

There is no dampening. You will get more pogo than you’d expect. Some love them, and some hate them. It’s a matter of preference.

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754 · « **Reply #173 on:** April 30, 2021, 09:33:38 PM »

I cant say it was a bad ride.. i cant remember it ever doing a pogo or continue bouncing.. i put a lot of miles on it.
I have done 5000 miles in a month, and over 800 kikes in a day on the one I had.,
Now some of the other plunger frames, have way more slpp, and things moving around as you insert axle..

1080 · « **Reply #174 on:** May 01, 2021, 08:57:42 AM »

My P&P girder had no Poggo effect, I did take my brothers 650 Kaw with his springer for a ride, and yes you know that poggo effect. A friend of mine also with a custom 750 springer, also did not like the poggo effect. I suggested to do what Harley's did to solve the problem ( See 1990 Harley softail/springer model). So even if yours is a girder with springs, you may also go this way to damp the bounce.

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Author Topic: 1975 Amen Chopper (Read 29849 times)