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Another UJM cruiser into something it's not build!

This is a discussion on Another UJM cruiser into something it's not build! within the Project Builds forums, part of the Caferacer.net Forums category; Originally Posted by brad black looks like the 17 might be a problem too, maybe just the photo angle. undo the fork caps and let ...

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Thread: Another UJM cruiser into something it's not build!

  1. #11
    Member deaconblues's Avatar
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    Quote Originally Posted by brad black View Post
    looks like the 17 might be a problem too, maybe just the photo angle. undo the fork caps and let it drop.

    you could get a 16 from a blade or hornet.
    That's a good idea. I put on the biggest 17" tire we had, a 120/90 and at full compression it would just scrub the inner header pipes with the forks near what is to be full lock. With a 120/60 the forks would have to be fully compressed, flexed backwards over 2.5cm and at those same two degrees of turning. I'm no Marc Marquez, so if those requirements were met during riding I think tire rub would be just one more cause of death on the list. I could lace a 16" but then I would probably run into problems with the collector scraping during right turns. Really, this 4 into 1 is kind of a pain. I think it's some crappy Mac exhaust. Just one more thing that, if this bike turns out alright, I would put actual monies into. Nice stainless 4 into 2...

  2. #12
    Member deaconblues's Avatar
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    Quote Originally Posted by Geeto67 View Post
    let me see if I got this straight:

    - Harley dude complains about how cruiser rides, so buys another crusier
    - makes changes that are basically only cosmetic and don't actually address previous complaints (you are going to get the wave from HD dudes anyway, I do all the time on the ducati, get over it).
    - throws parts at it without fully understanding the effect of geometry on the chassis


    yup....all seems smart. carry on.
    I was sincerely hoping you personally would comment on what a shitbox I was building! I have read quite a few "build logs" on here, and dammit, I'm actually a fan. You've made my day more than once. That said please allow me the obligatory retort because I feel like my entire manhood has been called into question since someone on the internets doesn't like my bike.*

    Harley dude? Not entirely accurate. In my town if your a bike mechanic and you want to actually make enough $ to feed the family you have to work on Harleys. I've asked my boss on numerous occasions to let me take on metric work. This is usually met with the same amount of enthusiasm and disdain as your comment waah!
    whatever, I'm building it for me and me only. I've been working on bikes for thirty years most of them professionally so if I don't understand something I know someone that does pal!

    Geeto is right though, this is a vanity project. I've tried to make that apparent. Though it is built of spare parts nothing has been thrown together with reckless abandon
    *Just playing. That's how these usually read.

    So I had time this weekend to start changing those things what hold your feet and started some work on the seat. Yup it has a bum stop even though the frame of this bike has one built in because I like how a painted steel cowl looks on the back of a bike. Originally I had planned on just bracing the frame between the rear shocks but now I'm thinking that I'll bend some tube and integrate an LED strip for run/brake/turn and make a loop out back also.
    The guy doing the headwork has told me I should use a catch can for the crankcase vent, but I might just shove some uni foam into the rear downtube and run a line to it, eh?
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    Last edited by deaconblues; 09-05-2017 at 01:59 PM. Reason: cuz double post already.

  3. #13
    Senior Member Geeto67's Avatar
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    A real fan, I'm touched (in the head but you knew that)

    here is the point I try to make with everyone: Just because it is a custom doesn't mean it has to be a "Racer". Having the racer mantle comes with certain functional expectations, if you aren't going to try to live up to them then why even emulate it in vanity. Why not instead make the custom bike you are going to actually enjoy to ride? I doubt low clipons and a tank humping riding position really contributes to that.

    seems like you are at least checking the clearances and such which is more than most do, so carry on.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

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  5. #14
    Member deaconblues's Avatar
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    Quote Originally Posted by Geeto67 View Post
    A real fan, I'm touched (in the head but you knew that)

    here is the point I try to make with everyone: Just because it is a custom doesn't mean it has to be a "Racer". Having the racer mantle comes with certain functional expectations, if you aren't going to try to live up to them then why even emulate it in vanity. Why not instead make the custom bike you are going to actually enjoy to ride? I doubt low clipons and a tank humping riding position really contributes to that.

    seems like you are at least checking the clearances and such which is more than most do, so carry on.
    Checking clearances, you will be proud to know I have two Gerstner chests just loaded with feelers, Starrett dial calipers, micrometers, steel rules, edge/center finders...etc. I've been lucky enough to have some better brains show me how at least some of them work.

    I don't think the term racer could ever be applied to this thing. I dunno streetfighter? Not quite either. It is what it is, a mishmash of aesthetic and performance enhancing mods. As far as the ergonomics, the Virago is way to small for my big dumb apeish frame, so much that I will regularly sit on the bit** seat. I've literally built this Honda around my body size. Any day I get to ride now is enjoyable! I've been riding this XV around for the past seven years like it was a TZ350 so the Chickenhawk will definitely suit me better especially since my days of long rides are sadly behind me. Maybe this is my mid-life crisis? At least I won't get in trouble for sticking my willy wonka in it and the insurance is lower than a new M5...
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  6. #15
    Senior Member hillsy's Avatar
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    Quote Originally Posted by deaconblues View Post
    The guy doing the headwork has told me I should use a catch can for the crankcase vent, but I might just shove some uni foam into the rear downtube and run a line to it, eh?
    That's an option as long as it vents properly - any restriction will more than likely blow oil up into the cylinders and your bike will look like a 2 stroke from a distance.

  7. #16
    Senior Member XB33BSA's Avatar
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    you dont need more bracing between shock mounts it will be fine with no hoop at all
    i would remove those engine crash bars cause lowered as it is they will ground out quick
    ideally you need longer forks somebody out there makes screw in extensions tho

  8. #17
    Member deaconblues's Avatar
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    Quote Originally Posted by hillsy View Post
    That's an option as long as it vents properly - any restriction will more than likely blow oil up into the cylinders and your bike will look like a 2 stroke from a distance.
    I had told him I was just going to put one of those little K&N pod looking filters on a length of tube and I got the lecture about the airbox being the filter and if he does the porting, and gets the compression
    close to 10:1 a small filter may contribute to a blow by effect. He was planning on to put larger valves in but for some reason he said just the intakes. I can't really relay everything he said because he talks
    like everyone has a Phd in this stuff. I told him to do whatever he wants because I still have the head that's on the bike now.

    Quote Originally Posted by XB33BSA View Post
    you dont need more bracing between shock mounts it will be fine with no hoop at all
    i would remove those engine crash bars cause lowered as it is they will ground out quick
    ideally you need longer forks somebody out there makes screw in extensions tho
    I don't think you'd mess with me about the bracing. When I gave the bike a test ride with these suspension changes the rear would feel a touch ... Hmm Mushy? Not like undersprung more like a underinflated tire.
    At the time it had a sh**** Kenda on the back which I no longer have to check if was a radial or bias ply. I realize that with the ridiculous amount of changes to the geometry it's not going to feel dialed in straight away, but I figure eliminating the possibility of frame flex would be a good place to start.
    The crash bars are coming off. My boss likes to use tie down straps whenever a bike is on the lift and the bars a perfect place to strap to.
    I think Yoshimura made some extended fork caps but I was thinking of getting in touch with someone like Banke Performance or Cognito moto about a top triple that steps down
    like these
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  9. #18
    Member deaconblues's Avatar
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    Had to take some time away from this project to start on another Honda. Name:  6qpm2C5.jpg
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    Pretty excited to take an NSR 500 for a ride.
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  10. #19
    jcw
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    Quote Originally Posted by deaconblues View Post
    I think Yoshimura made some extended fork caps but I was thinking of getting in touch with someone like Banke Performance or Cognito moto about a top triple that steps down
    like these
    Name:  Billet-Triple-2.jpg
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    I am having a GREAT deal of trouble with cognito moto with my drop triple tree and stem for my R75.
    Just saying...

  11. #20
    Senior Member XB33BSA's Avatar
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    Quote Originally Posted by deaconblues View Post
    I had told him I was just going to put one of those little K&N pod looking filters on a length of tube and I got the lecture about the airbox being the filter and if he does the porting, and gets the compression
    close to 10:1 a small filter may contribute to a blow by effect. He was planning on to put larger valves in but for some reason he said just the intakes. I can't really relay everything he said because he talks
    like everyone has a Phd in this stuff. I told him to do whatever he wants because I still have the head that's on the bike now.


    I don't think you'd mess with me about the bracing. When I gave the bike a test ride with these suspension changes the rear would feel a touch ... Hmm Mushy? Not like undersprung more like a underinflated tire.
    At the time it had a sh**** Kenda on the back which I no longer have to check if was a radial or bias ply. I realize that with the ridiculous amount of changes to the geometry it's not going to feel dialed in straight away, but I figure eliminating the possibility of frame flex would be a good place to start.
    The crash bars are coming off. My boss likes to use tie down straps whenever a bike is on the lift and the bars a perfect place to strap to.
    I think Yoshimura made some extended fork caps but I was thinking of getting in touch with someone like Banke Performance or Cognito moto about a top triple that steps down
    like these
    Name:  Billet-Triple-2.jpg
Views: 247
Size:  71.0 KBName:  billet-triple-8.jpg
Views: 258
Size:  24.3 KB
    that cb350/cb360 33mm top triple(the actual photo) was made by a shop up in wisconsin,... i think wis but for sure its their patrt
    they do lots of trik parts for vmx and who knows what else but he advertises as willing to fab one off custom parts as well
    as far as frame flex you wont get anything to notice until you push it pretty hard
    the front end geometry isnt as radically changed as it may seem cause the triple clamps and the short offset they have gets thr trail back closer to where it plays nice
    -the nighthawk forks had more offset and shortening them up a bunch would have impacted trail more
    but its not just steering angles ,trail and so on and so forth
    its changes in weight ditrubution that may effect a bike as well, to what degree you will find out
    leading axle forks are a far superior fork for many situations ,they have lots of advantages and are only outclassed by straight leg forks when the travel needed is short and the machine has a low steering stem(a normal street bike in other words)\
    and if the straighjt leg forks are highly precision with low friction bushings in the 2 now standard for all forks locations
    but if the bike mfg wants 6'' or more travel and like on a dual sport is deal with a 21 up front there is no comparison
    leading axle forks have more overlap which means less flex and much smoother more compliant action
    that is why they became standard issue on jap criuisers the high front end demands that superior design on long forked cruisers and mx bikes as well
    being a leading axle does nothing negative to a bikes handling because of its basic design ,per say
    in fact they impart a lighter feel in slow speed situtuations
    doing headwork has zero effect on the engines crankcase breathing needs
    leaving that stock is best in my opinion
    Last edited by XB33BSA; 09-10-2017 at 11:00 AM.

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