Vespa handlebars Question

Discussion in 'Battle Scooters' started by kantuckid, Aug 9, 2018.

  1. kantuckid

    kantuckid Long timer

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    Can I add weight to a Vespa 300 handlebar? In other words, is the steel tubing able to hold lead shot or BB's inside w/o coming out a hole? I could find my own answer were I to take all the plastic off but plastic tabs are said to be notorious for breaking when that's done.
    Heavy bar ends are quite pricey and my OE bar ends are already the same exact weight now as a heavy version of a Throttlemeister cruise bar end.
    Tubing with holes or not?:ear
    #1
  2. fullmetalscooter

    fullmetalscooter Let me take this duck off

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    Modren vespa will have the answer if we dont. google then add Site: modrenvespa.com ? Adding site: :forum etc to google will just show ether one site such as advrider.com or just tell google to look for post in forums. YOu also can google advance search which also you to search for just one pharse etc and no other words.
    #2
  3. kantuckid

    kantuckid Long timer

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    Thanks but most days I'm on MV already and have found that google searches MV better than MV forum.
    I've posted the "sealed handlebars" question twice, so far no takers.

    Here's some additional background info:
    There are two weights of Piaggio bar end weights. Mine came with the shorter, lighter version which happens to weigh the exact same amount as a Throttlemiester hvy version, cruise control. The heavy version Piaggio's are ~$40 plus s/h.
    Zelloni aftermarket heavy bar ends are ~ $60+ plus the s/h. Too much for a blob of steel IMO.
    These scoots are sensitive to weight placement as Piaggio includes the heavy version with the OE topcase setup, which is similar to a SHAD SH33 case (maybe the same but in colors) to offset added rear weight. The 300 Vespas can have a handling issue called "the wobbles" and some have said the heavy version was a cure to some degree, depending on who's scoot it is. Tires seem to be the major culprit mentioned. I don't have wobble but the again I just added a top case and changed out both tires. Between daily , heavy rains, some days multiple rains, I haven't moved my scoot out of the shop for a test ride to see how it rides.
    In my mind adding handlebar weight has always been about vibration, not fore and aft counterweight or wobbles. My old tires were very smooth even with the rear worn to the TWI's.
    It would seem the riders weight and seat placement of the rider (tall vs short,etc.) would be even more likely to affect scoot handling-like a size 6 shoe on a female rider vs. a size 12 shoe on a male rider would weigh more than a bar weight change out.
    If I can add weight via BB's or lead shot to the tubing it's cheaper, heavier and doesn't add width to the scoots overall width.
    For reference there's a 6mm threaded hole @ bar end.
    #3
  4. tortoise2

    tortoise2 Been here awhile

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    EVERY machine has "quirks" . . but it is truly puzzling WHY the Vespa crowd considers the legendary "Italian engineered wobble" acceptable!
    #4
  5. cdwise

    cdwise Long timer

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    I keep hearing of that infamous wobble but have only experienced when there was an issue with my tires, usually when the tire pressure is too low. I have also experienced it on our Buddy again only when the tire pressure is too low. I have been told that the thread pattern of your front tire makes a difference too. Tires with a single groove down the middle seem to be more prone to wobble according to the reports.

    Kantuckid the newer 300s rarely get a wobble, it is mostly the 250s that get it. There were suspension changes that were supposed to eliminate the wobble when ESS bas added but some people didn't like it so they reverted to something closer but newer slightly different from the 250 suspension in I think 2017.
    #5
  6. CaptnJim

    CaptnJim Scooter Pilot

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    When I put a topcase (Givi 37L) on my GTS 250, I took it out for test ride - highway speeds, with a cross wind. No wobble, no handling difference I could detect. Admittedly, I don't pack my topcase with heavy stuff - I got it so I'd have a place to keep my helmet when parked. I do carry some light camera gear, and when it gets hot out, I put both of our jackets in there; grocery store runs. I have not added heavier bar weights; haven't felt the need. I did put a Laminar Lip on the Faco mid-windshield; some say there is some downward pressure with that lip; again, other than the reduced wind noise, no difference in handling.

    I have no scientific reasoning on this, but I would be reluctant to put anything "moveable" in the handlebars (like b-b or shot)... I guess I have a concern with it moving or rattling while riding.

    I do get a hop/wander on some grooved road surfaces. Cheryl (CDWise) and I have discussed this, and think it is more a function of the tire pattern. Most grooved surfaces are not an issue, but the occasional one that does cause this makes me slow down to 45 - 50mph. I have tried "holding the grips loosely"... "holding the grips tight"... "putting more of my weight on the grips"... none of it makes a difference. Joan hasn't experienced this on the same road sections with her PCX (larger diameter wheels, narrower width), but she gets moved around more in cross winds. Differences in rides.
    #6
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  7. fast1075

    fast1075 Fasterizer

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    Take the bar end off one side and blow into the bar. You will know if there are holes in it somewhere.
    #7
  8. Dark

    Dark Been here awhile

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    I filled my old bmw k100 bars with silicone & it did a good job of taking the buz out of those bars. I put a piece of hose on the end of the silicone tube to get to center of the bars then worked my way out. 1 tube (caulk gun size) took care of both sides if I remember correctly
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  9. kantuckid

    kantuckid Long timer

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    Your Mama didn't raise a fool!:lol2
    See below.
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  10. kantuckid

    kantuckid Long timer

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    I took your idea and brain said look at a parts fische which I didn't find an answer so i thought used on ebay. There are a bunch of Vespa 300 handlebars for sale. The new set from Cyprus is unpainted thus easier to see the holes in pics, but they do show in other used bar pics.
    Each side has a hole pointed downward when installed-they are about 5/16" dia so any thing samll enough to go in the 6mm hole will go out, unless there is something filling that hole? I'm looking in my scooters glovebox up high as next step.
    I have a large roll of solder which could be pushed back in there until it no longer went in. :lol2
    #10
  11. fast1075

    fast1075 Fasterizer

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    The solder idea is brilliant (as long as there are no wires or such in there). I don't know. My scooter speaks Japanese.

    We actually used to hide ballast in the frame tubes using that very method on drag bikes that needed just that little bit more to meet minimum weight. (without any illegal visible external weight).
    #11
  12. kantuckid

    kantuckid Long timer

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    Test ride results: I'm just in from an 8 mile test run to see how my new Michelin Power Pure's feel and to ensure the wobbles didn't visit this Vespa 300GTS. I have one passenger psi in both tires, plus one pound. I have Dynabeads in both tires-2oz per Dynabeads web info for wheels 12" and above. The scoot is very smooth at all speeds from 0-75 mph. In the beginning as I tried out various speeds and decelerated over and over I noticed a wobble when right at 33 mph, ending at ~ 30 mph. It continued to show up at that barely over 30 mph but only in deceleration never in acceleration, no matter what speed.
    As I got closer to my gravel road the wobbles ended at the speeds they had shown early on. The handlebars when viewed during the wobble go back and forth just enough to be noticed but not to the point of instability. Sort of like an out of round effect.
    The most noticeable handing change was the scoots far more nimble on the rear tire, which comes, no doubt, from no longer having any chicken strip on the rear. I replaced the front tire on age not tread wear. I had the SHAD SH39 on the scoot but hardly any weight inside.
    Monday it goes to the doctor & dentist for a 150k RT and the tires will get scrubbed that day.
    When I get my heavy bar ends I'll install them and see what happens, then try the handlebar tubing weight next. I'll also add weight to the top case and see if anything changes?
    #12