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Weight on each wheel of Vincent TWIN

Idealist

Website User
Non-VOC Member
To take advantage of recent changes and improvements in the latest version of software, some more data is required, to help with analysis of Vincent suspension systems.

This includes the weight on each wheel for a loaded Vincent TWIN [ solo, not sidecar outfit ], with bike at rest on a flat level surface , and the bike in normal road going condition.

I am sure that several owners have in the past already taken their bikes to weigh-bridges to weigh them.

Maybe the results have already been published somewhere - if so, please let me know where.

What is needed is the weight on the front wheel and also the weight on the rear wheel, bike stationary, NOT on the stand, but the rider seated normally, just using his/her feet to keep the bike upright.

Please state if petrol/gas tank full, if rider only or if it includes pillion passenger and / or luggage.

The more loading conditions we have weights for, the better.
It would be nice to have rider only and also rider/passenger/luggage as well.

And please state the bike type Series A, B, C, D. [ Only 'standard' Vincent suspension bikes please - no NorVins, Eglis etc ].
 

Tom Gaynor

Well Known and Active Website User
VOC Member
Weight distribution

My tester doesn't measure anything, he just sticks it on the rollers. However, recently a piece of advanced techology called "the bathroom scales" has come on the market, and if you're lucky enough to be able to purchase one...
And if you add the two readings, you have the weight of the bicycle. It might be a good idea to put a bit of wood across it, and it is important to get the wheel over the centre of the weighing platform. Even if there IS an error, it'll be the same for front weight and rear weight.

The weight on each wheel should be checked by the Tester as part of the brake test during an MOT so make a note then.
 

Idealist

Website User
Non-VOC Member
Thanks for the ideas so far, rather on the lines of "how do you weigh an elephant?".

http://www.storiestogrowby.com/newsletter/news_aug_03.html

But I am not at present able to do the obvious thing - go and weigh a Vincent myself, for reasons which I don't need to go into.
Rather I am looking for a quick set of results from what someone else has already done.
Surely someone must have done this in the past and written about it?

[No bathroom scales I have seen in Europe could cope with the rear wheel weight of a Twin loaded with rider, passenger and luggage. Might be different in other continents.]

____________________________________

My tester doesn't measure anything, he just sticks it on the rollers. However, recently a piece of advanced techology called "the bathroom scales" has come on the market, and if you're lucky enough to be able to purchase one...
And if you add the two readings, you have the weight of the bicycle. It might be a good idea to put a bit of wood across it, and it is important to get the wheel over the centre of the weighing platform. Even if there IS an error, it'll be the same for front weight and rear weight.
 

Pete Appleton

Well Known and Active Website User
VOC Member
VOC Forum Administrator
brake weights

My tester doesn't measure anything, he just sticks it on the rollers. ....

The rollers have a load cell to measure the weight of the bike and rider at each wheel so that the braking efficiency can be calculated. It will give the measured weight and the efficiency in percent for each wheel at the end of the test.


I am sure that large bathroom scales are supplied to the US market....


Pete
 

roy the mechanic

Well Known and Active Website User
VOC Member
wetght on wheels of vin.

Whilst i understand the principle of using new software[toys], the guys at stevenage were not fools. The suspension on my c rapide,to my experience,is just about right. It soaks up most undulations better than most. More important when it becomes airborne, hump-back bridges etc, it always lands rear first, which is just as it should be. "If it ain't broke don't fix it" roy.
 

pifinch

Well Known and Active Website User
VOC Member
Weight on each wheel of Vincent TWIN
I'm not sure if I am just misreading but does Idealist just want an indication of HOW HEAVY those big lumps of lead were that slotted around the spokes? - (If so Idealist, it has to be trial & error, balance factor is different for every tyre & rim.)
I assume you just wish to balance your wheels, ask about wheel balance & I am sure you will get the answer you want.
Steve.
 
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Tom Gaynor

Well Known and Active Website User
VOC Member
Vincent roadholding

Roadholding is the ability of the bicycle to keep its wheels on the tarmac (the coefficient of friction between rubber and air is quite low). It isn't steering. Bicycles won't steer if their wheels are in the air, whence perhaps Norton calling their forks Roadholders, not Navigators.
If you want to know how good C Vincent roadholding is compared to with what went before (agreeing with Roy), try riding a 1938 Rudge Ulster up and down my favourite local piece of road, then the Vincent. The Rudge forks are good - the best steel girder fork ever made, with one-piece forged steel links - but the ride is appalling over short-pitch bumps. I always take my watch off. On smooth roads the Rudge is superb, and since roadholding isn't an issue, its fine steering comes through. I reckon on a smooth road it steers better than the Vincent.
By comparison, the Vincent doesn't swallow all bumps the way, say, a 1993 Showa-forked Ducati does, but it is perfectly possible to cruise the Vin comfortably at 80 mph to 'Kinwashboard and back, and with a watch on. At 80 mph on the Rudge it is difficult to keep a grip of the bars.

Whilst i understand the principle of using new software[toys], the guys at stevenage were not fools. The suspension on my c rapide,to my experience,is just about right. It soaks up most undulations better than most. More important when it becomes airborne, hump-back bridges etc, it always lands rear first, which is just as it should be. "If it ain't broke don't fix it" roy.
 

Idealist

Website User
Non-VOC Member
Weight on each wheel of Vincent TWIN
I'm not sure if I am just misreading but does Idealist just want an indication of HOW HEAVY those big lumps of lead were that slotted around the spokes? - (If so Idealist, it has to be trial & error, balance factor is different for every tyre & rim.)
I assume you just wish to balance your wheels, ask about wheel balance & I am sure you will get the answer you want.
Steve.

I confirm that you are indeed "just misreading".
We can easily get an idea of the total weight of a Vincent Twin without rider etc from Paul Richardson. I am looking for the weight exerted on the front wheel and on the rear wheel for a loaded road going TWIN with rider, and also for bike and rider with passenger and luggage.
The sum of these two weights would equal the all-up weight.
Nothing to do with balance weights, honest!
 

Alan J

Well Known and Active Website User
VOC Member
Weight

Pete-it's not so easy with a "pram" on the side!!{see you at the "winter Welsh?} When I think of all the extra junk I have added to my "outfit", I dare not weigh it!!:confused::confused::confused::confused:
 
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