Author Topic: Gentlemans Express  (Read 3774 times)

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Offline bwaller

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Gentlemans Express
« on: April 09, 2007, 06:03:24 PM »
For those of you who read Gordon Jennings article on the gentlemans express from Cycle magazine 1975 will understand what I've been looking to achieve with this 550 project. Function more than form is how he put it, and I am hoping to make a "rider" that is still comfortable after a few hours in the seat.

There have been several great projects that guys have shared with their progress pictures and I would like to show you some too although I need to update my camera and finish the engine, but for now here are some of the completed rolling chassis.

Brent

Offline bwaller

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Re: Gentlemans Express
« Reply #1 on: April 09, 2007, 06:11:10 PM »
It is registered as a 1973 CB500, although there are a few different years worth of odds n ends and several different bikes that have contributed. I'll post a few more when I get the engine buttoned up.

Offline physician

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Re: Gentlemans Express
« Reply #2 on: April 09, 2007, 07:11:23 PM »
WOW !! I'm really impressed!  howesome look!

do you have more details? I remember you talk about your 18  inch front wheel with 110 tire, but, how about the rear? and what bike give this nice body work?
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Offline 736cc

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Re: Gentlemans Express
« Reply #3 on: April 09, 2007, 07:25:04 PM »
Looks like a HOZUKI w/ those donor parts!
Well done!!

Offline doug_id

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Re: Gentlemans Express
« Reply #4 on: April 09, 2007, 07:25:38 PM »
That is one sharp looking bike  8) 8) ;D
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Offline bill440cars

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Re: Gentlemans Express
« Reply #5 on: April 09, 2007, 07:34:32 PM »

   Whoaaaa!!!! Like physician said, "WOW"!!  That is one mighty cool looking bike that you are creating.It never ceases to amaze me at all the different, yet out standing bike ideas that pop up on this site. You sir, are a master!! ;)  8) As physician also said, "Details!" Because we definitely have to have some details.


                                                                  Later on, Bill :) ;)
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Offline bwaller

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Re: Gentlemans Express
« Reply #6 on: April 09, 2007, 07:38:43 PM »
Rear tire is a 130/80 on a 2.5x18".

 I replaced the 500 rear frame section with one from a 1985 VF750 Interceptor, then used that tail, fender & seat. Had to stretch the tail section 1.5" from stock to allow the 500 rear wheel to fully suspend inside the fender. The trickiest part was making sidecovers.

I built this bike for my wife so she didn't rack up so many miles on her cherry 400F, plus when we're riding any distance with friends, she doesn't have to work so hard to keep up.

So from the beginning my plan was to build this to match the ergonomics of her 400 as closely as possible.
1) reduce weight to 400lbs or less.
2) better brakes & suspension & handling
3) lower the seat height
4) improve power

The jury's still out on how close I came until the bike is complete, but the thing seems tiny moving it around and I know that at least forty pounds have been trimmed, and power is being looked after.......!

A before pic

Offline heffay

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Re: Gentlemans Express
« Reply #7 on: April 09, 2007, 07:55:45 PM »
excellent.  love it.
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f

Offline doug_id

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Re: Gentlemans Express
« Reply #8 on: April 09, 2007, 07:58:02 PM »

   Whoaaaa!!!! Like physician said, "WOW"!!  That is one mighty cool looking bike that you are creating.It never ceases to amaze me at all the different, yet out standing bike ideas that pop up on this site. You sir, are a master!! ;)  8) As physician also said, "Details!" Because we definitely have to have some details.


                                                                  Later on, Bill :) ;)

Yeah....I have never seen so many people creating some many cool custom bikes.   Really amazing how these things can take on so many different looks and personalities.   :o :o

Doug
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Offline bwaller

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Re: Gentlemans Express
« Reply #9 on: April 09, 2007, 08:11:45 PM »
Thanks guys, and this site has produced a number of great bike builds.

This has been alot of fun along the way and now to be this close finds me in the shop a little later in the evenings. I need to bone up on the camera thing and will provide a few more pictures after I wind this thing up.

Will try again with this one before pic.

Offline wardmoto

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Re: Gentlemans Express
« Reply #10 on: April 09, 2007, 08:23:39 PM »
Awesome...RIP Gordon...
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Offline cben750f0

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Re: Gentlemans Express
« Reply #11 on: April 09, 2007, 10:09:47 PM »
mate that is bloody awesome, well, done and as i said to proteal.... NEED MORE PICTURES!!!!..lol

keep it up mate... looking really great...

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Offline Dave K

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Re: Gentlemans Express
« Reply #12 on: April 10, 2007, 07:15:58 AM »
Whoa, that is awesome! Yes, I have the magazine articles right here. The bike almost looks like a much trimmed down '81 CBX without bags. The side covers, front fender and tail section look awesome. Looking forward to seeing it completed.

Offline rhinoracer

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Re: Gentlemans Express
« Reply #13 on: April 10, 2007, 07:24:29 AM »
Great looking bike! Can't wait to see it finished.

I miss Gordon, thought nobody else remembered him. However I didn't start reading him until the late 80's.

Can you tell us what this Gentleman's Express was?
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Offline bill440cars

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Re: Gentlemans Express
« Reply #14 on: April 10, 2007, 07:35:29 AM »


                   There was also one called the "Mantle Piece" in a bike magazine. I've got it around here somewhere but, I don't have a clue where right now. It was in either Cycle, Cycle World or Motorcyclist I think. It was based on a 550 and had only what was required (in other words, Bare Necessities). Also had a "Built" motor! I don't know if it is on the web anywhere or not. If I locate the magazine, I'll try to post it.

                   Can't believe how incredible this bike looks bwaller. 8) You have every right to be proud ;)

                                                          Later on, Bill :) ;) 
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Offline Geeto67

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Re: Gentlemans Express
« Reply #15 on: April 10, 2007, 08:01:24 AM »
I would love to know how you got that interceptor rear seat, tail, and sidecovers to look like the factory put them on the bike. Really awsome job.
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Offline bwaller

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Re: Gentlemans Express
« Reply #16 on: April 10, 2007, 09:58:17 AM »
The gentlemans express concept in Gordons words is a "denial of form and a worship of function". I believe it was a term used to describe somewhat sporty cars of the fifties in England. In bikes he makes the comparisons with full blown cafe racers and prefers more comfort driven ergonomics in a sporting sense, low handlebars as opposed to clip-ons, proper peg location instead of way back rear-sets, a more tractable power band compared to big top-end horsepower. He chose to use a CB500 four as a platform and one of the magazine people owned one.

It's been a while since I've read this piece, but you get the jist, it's worth the read. Dave K can you scan the article and post it? 

Geeto67 the fitment of these parts took a lot of measuring, trying to imagine if it might all fit without looking out of place. Eventually the frame was cut and I was commited. I wanted a rear fender that offered wet weather protection but would also trim weight. The front of the seat didn't mate well at all with the 500 tank, but I could see possibilities with the SS tank which has a different shape.

Sidecovers were an obstacle, because the Intercetor parts would not work at all. I watched a biker build-off episode with a guy from Auz or NZ who first made hardwood moulds, then pounded sheet aluminum over his moulds to form his parts. I thought I could do this for my sidecovers....... needless to say it is not as easy as it looks!

I'll post some more pics tonight.

Offline Ricky_Racer

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Re: Gentlemans Express
« Reply #17 on: April 10, 2007, 11:25:42 AM »

Hi, Bill.  Is this what you were looking for?  This is what we used to call "piperacks" back in the ol' hot rodding days.  Nuthin' extra!  RR


 There was also one called the "Mantle Piece" in a bike magazine. I've got it around here somewhere but, I don't have a clue where right now. It was in either Cycle, Cycle World or Motorcyclist I think. It was based on a 550 and had only what was required (in other words, Bare Necessities). Also had a "Built" motor! I don't know if it is on the web anywhere or not. If I locate the magazine, I'll try to post it.

 Can't believe how incredible this bike looks bwaller. 8) You have every right to be proud ;)

 Later on, Bill :) ;)

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Offline Geeto67

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Re: Gentlemans Express
« Reply #18 on: April 10, 2007, 11:32:29 AM »
where is the battery and electrics on that bike?
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Offline MoTo-BunnY

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Re: Gentlemans Express
« Reply #19 on: April 10, 2007, 01:35:02 PM »
Because of what I do for a living (selling automotive/construction/motorcycle manuals and  literature) I just may have the magazine(s) you guys are referring to, as we have hundreds of Cycle, Cycle World, MotorCyclist, etc etc. in our stock, from the '30s to the 80's

I have been scanning and posting any of the SOHC articles I come across (search for the old post - haven't posted any new stuff for a while but will again, soon) so let me know if you want any other articles scanned. I just need to know what issue it is.

I have been kind of catching the Cafe' racer bug myself, a bit, and found some articles on Cafe' stuff I will post soon . . .

Kewl bike. .  I also love how everyone has their own 'interpretation' of these fine bikes  :D
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1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline 736cc

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Re: Gentlemans Express
« Reply #20 on: April 10, 2007, 01:42:10 PM »
Quote
where is the battery and electrics on that bike?
Maybe its just a mantlepiece and stripped for display? Thats about the ultimate-looking 500/550 four. LUV THE ACTION FOURS PIPE. I used to have that pipe, wish I could find another and build a bike around it.


Anybody have a link to the Cycle magazine "Gentlemans Express" article?
« Last Edit: April 10, 2007, 01:45:16 PM by 736cc »

Offline Dave K

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Re: Gentlemans Express
« Reply #21 on: April 10, 2007, 01:43:40 PM »
MoTo-BunnV, Could you find that article in "Cycle" and post it here on the Gentleman's Express? I have the article, but not the smarts to scan and copy it. I have every "Cycle" mag. from 1969(?) till the copy marked (the last one).

Offline MoTo-BunnY

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Re: Gentlemans Express
« Reply #22 on: April 10, 2007, 03:44:53 PM »
Doesn't look like we have that issue. We have 1965-1973 covered pretty good, in all the major magazines but only sporadic issues before and after that period.

If anyone knows of any magazines with SOHC stuff in it, let me know. Like I said, I have been scanning and archiving all that I come across but I am sure I have missed some stuff.
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[img width= height=]http://farm4.static.flickr.com/3440/3846213109_ae572002d4_o.gif[/img]

hoppin' on down the bunny trail . . .

1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline bwaller

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Re: Gentlemans Express
« Reply #23 on: April 10, 2007, 06:42:00 PM »
One interesting item from that article is the fact that OFTEN the fork tubes on these bikes are not parallel. The triple clamp fork bores don't exactly line up with those of the steering stem.

I wanted to use a set of forks from a later model as the assembled height is slightly less plus I wanted to eliminate the earlier gators. I bought a good set from a 77 CB550 and when I checked them they were ever so slightly bent. When I mounted the straight tubes and measured just under the triple clamp and at the extreme bottom end of the tubes. They were wider at the bottom by 0.035".  Ultimately this creates a "stiction" problem with old forks that aren't known to be the worlds best dampers so after some experimentation I cut some 0.003" shims and installed on the inside of each fork tube in the top clamp and it brought the bottom within 0.005" which I would live with. With new bearings in the front hub and the axle installed there was several thou between the right fork & the speedo drive so found a thin washer to take up the slack and all is good! When I worked in a shop this was commonplace, a space between the right fork leg and the speedo drive and the leg would get pushed over tight and then tightened causing a slight binding in both forks.

Tried to show here.

One other thing that I worked hard to accomplish was to put the bike on a diet. I weighed everything and the savings were most often just grams but it all adds up. I'll mention a few places where the weight came off quickly.

One big plus is that the bike now sports dual discs & calipers, but with lighter rotors, fender, 18" alloy rim the front unsprung weight is over a pound lighter..... bonus.

Exhaust-                   saved 17lbs.
Ex clamps(aluminum)            1.5
front fender                        3.4
rear fender & seat                6
centre stand                       5.5
frame brackets                    2.2
400 instruments                  1.7  (also includes aluminum brackets etc)
kickstart shaft & lever           3    (some might prefer to leave this & remove the E-start motor which is more like 7lbs)