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Wheel weights
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Tue Jan 07, 2020 6:39 pm    Post subject: Reply with quote

So just to give an update and keep the info all together .
I weighed my spare forged DB6 & 7 wheels over Xmas, valves and cush drive but no disc's or tyre's.
(Man those DB7 wheels are light)
DB5/6 standard are from 2Bim's as mentioned earlier in thread.


Antera ...................................Front 6kg ..........Rear 8.95kg
BST carbon.............................Front 2.95kg.......Rear 5 kg
Dymag 7 spoke forged alloy......Front 3.45kg.......Rear 5.9kg
Dymag carbon.........................Front 2.75kg.......Rear 4.75kg.
Db6/5 standard.......................Front 5kg............Rear 8.7kg
DB6 forrged Marvic 7 spoke .....Front 3.75kg........Rear 6.5kg ( with disc)
DB7 Y-forged .........................Front 2.85kg........Rear 5.25kg
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Tue Jan 07, 2020 8:18 pm    Post subject: Reply with quote

Its a shame no one yet has Oscom Wheel weights coz they look nice and light with their small hubs....Dont you have Oz wheel weights Vort?
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Tue Jan 07, 2020 8:27 pm    Post subject: Reply with quote

And in Reverse order with total:-

Antera .................................. Front 6kg ..........Rear 8.95kg = 14.95Kgs
Db6/5 standard.......................Front 5kg............Rear 8.7kg = 13.7 Kgs
Dymag 7 spoke forged alloy...… Front 3.45kg.......Rear 5.9kg = 9.35 Kgs
DB6 forrged Marvic 7 spoke ..... Front 3.75kg........Rear 5.5kg = 9.25 Kgs
DB7 Y-forged ......................... Front 2.85kg........Rear 5.25kg = 8.10 Kgs
BST carbon........................… Front 2.95kg.......Rear 5 kg = 7.95 Kgs
Dymag carbon.....................… Front 2.75kg.......Rear 4.75kg = 7.5 Kgs
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Wed Jan 08, 2020 1:38 pm    Post subject: Reply with quote

2bims wrote:
Its a shame no one yet has Oscom Wheel weights coz they look nice and light with their small hubs....Dont you have Oz wheel weights Vort?


TBH I didn't weigh them as I thought I had already put them in the list. But next time I have the scales out I will try to remember to do the early gold 5 spokes (DB5R/6R) and the later Oz piega wheels.(BB3/DB5R/6R /Tesi etc)
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YBevo



Joined: 02 Apr 2012
Posts: 15
Location: Aberdeen

PostPosted: Fri Jan 10, 2020 3:52 pm    Post subject: OSCAM!!! Reply with quote

I'll post up some weights as long as you stop calling them Oscom Very Happy
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Fri Jan 10, 2020 5:32 pm    Post subject: Re: OSCAM!!! Reply with quote

YBevo wrote:
I'll post up some weights as long as you stop calling them Oscom Very Happy


????….I'm intrigued....Purquoi? Que?....Iya noa understanda....I is froma Barcelona

The 3 spoke wheels fitted to the first series DB2, SB7 and YB series bikes with the small hubs and Large offset rattly cast iron brembos were branded "Bimota" but made by Oscom….or is it Oscam….Is that where I'm going wrong?
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Fri Jan 10, 2020 5:36 pm    Post subject: Reply with quote

Ah yes....seem to be Oscam….according to google searches...which brought up this site....with spares...might be of some use to someone

https://www.ducaticlassics.com/parts/500-600-and-650-sl-pantah/all/wheels-fps-and-oscam
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YBevo



Joined: 02 Apr 2012
Posts: 15
Location: Aberdeen

PostPosted: Fri Jan 10, 2020 8:29 pm    Post subject: Reply with quote

Hi, the Oscam's aren't particularly light, even the Thundercat wheel is lighter(just). Weights in kg are for fronts 3.5x17 with bearings

OSCAM(3 spoke) 5.5
DYMAG(magnesium 3 spoke/carbon rim) 3.2
MARCHESINI (magnesium 5 spoke) 3.0
MARCHESINI (forged aluminium 10 spoke) 3.6
YAMAHA THUNDERCAT 5.4

If I was wanting to keep the original look of a Bimota, 3 spoke Dymag CH3 (classic H section in white) would be the wheels to go for. Maxton made almost identical magnesium wheels to the Oscams but they would be so old they shouldn't be used on the road.
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welshlamb



Joined: 09 Mar 2011
Posts: 592
Location: South Wales , Nr. Abergavenny

PostPosted: Thu Feb 27, 2020 3:39 pm    Post subject: Reply with quote

YBevo wrote:
Hi, the Oscam's aren't particularly light, even the Thundercat wheel is lighter(just). Weights in kg are for fronts 3.5x17 with bearings

OSCAM(3 spoke) 5.5
DYMAG(magnesium 3 spoke/carbon rim) 3.2
MARCHESINI (magnesium 5 spoke) 3.0
MARCHESINI (forged aluminium 10 spoke) 3.6
YAMAHA THUNDERCAT 5.4

If I was wanting to keep the original look of a Bimota, 3 spoke Dymag CH3 (classic H section in white) would be the wheels to go for. Maxton made almost identical magnesium wheels to the Oscams but they would be so old they shouldn't be used on the road.


Weighed yesterday my DB2 front came in at 5.8kg and the rear (less cush) at 7.2kg so looks like there is a couple of KG that could be saved back and front with some lighetr wheels. ...Cant stump up the £2200 for the Dymags though so will keep looking!
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Fri Feb 28, 2020 8:37 pm    Post subject: Reply with quote

YBevo wrote:
If I was wanting to keep the original look of a Bimota, 3 spoke Dymag CH3 (classic H section in white) would be the wheels to go for. Maxton made almost identical magnesium wheels to the Oscams but they would be so old they shouldn't be used on the road.


Depending on the bike but I would have thought Marchesini hollow 3 spoke or the Dymag TT3
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welshlamb



Joined: 09 Mar 2011
Posts: 592
Location: South Wales , Nr. Abergavenny

PostPosted: Thu May 07, 2020 6:32 pm    Post subject: Reply with quote

Updated listing (thanks Vort) with Oscam and Marvic Mag weights

Antera....................................Front 6kg ...........Rear 8.95kg = 14.95Kgs
Db6/5 standard.......................Front 5kg............Rear 8.7kg = 13.7 Kgs
Oscam...................................Front 5.85kg.......Rear 8.23= 14.08kg
Dymag 7 spoke forged alloy......Front 3.45kg........Rear 5.9kg = 9.35 Kgs
DB6 forged Marvic 7 spoke ......Front 3.75kg........Rear 5.5kg = 9.25 Kgs
Marvic Penta 1 .......................Front 3.09kg........Rear 5.15kg= 8.24kg
DB7 Y-forged ........................ Front 2.85kg........Rear 5.25kg = 8.10 Kgs
BST carbon.........................… Front 2.95kg...... .Rear 5 kg = 7.95 Kgs
Dymag carbon.....................… Front 2.75kg........Rear 4.75kg = 7.5 Kgs

all assumed to be on same basis ie bearings fitted but no tyres or discs and cush drive on rear (but no sprocket?)).

Interestingly , the tyres I took off my DB2 (Pilot 2CT) weighed in at 3.9kg and 4.9 kg respectively. So especially with light wheels the tyre itself is a major part of that reduced weight and 'dilutes' the impact of reduced wheel weights. Be interesting to see if different makes of comparable tyres weigh differently. I can feel another thread coming on'Tyre weights' but I can't say I've ever seen that weight data published??
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Bud977



Joined: 03 Mar 2013
Posts: 525
Location: Sydney

PostPosted: Thu May 07, 2020 10:49 pm    Post subject: Reply with quote

As you say, tyres make a big difference. On my race RD250LC, I lost nearly 2kg per wheel changing from Avon AM20/22 to Dunlop TT900GPs, and running tubeless. Quite a difference, particularly on a light bike.
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Thu Feb 11, 2021 9:50 pm    Post subject: Reply with quote

Just gota new set of Dymag UP7X for my Vdue; front 3.24kg rear 5.28kg ( with sprocket )
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Fri Feb 12, 2021 9:27 am    Post subject: Reply with quote

Congrats Neils....??...>Are they the alloy Dymags then? I have them on my DB4 in place of the Anteras...previously I had wheel wobbles at high speed needing a steering damper...with the dymags...no concern at all and no damper needed
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Fri Feb 12, 2021 9:33 am    Post subject: Reply with quote

Yes they are the «new» alloy 7 spokes, they are lighter than the previous versions. Not tested them as it is -20`C at the moment Shocked
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