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vort28
Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK
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 Posted: Tue Jan 07, 2020 6:39 pm Post subject: |
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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: 7308
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| Posted: Tue Jan 07, 2020 8:18 pm Post subject: |
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| 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: 7308
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| Posted: Tue Jan 07, 2020 8:27 pm Post subject: |
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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
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| Posted: Wed Jan 08, 2020 1:38 pm Post subject: |
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| 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
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| Posted: Fri Jan 10, 2020 3:52 pm Post subject: OSCAM!!! |
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I'll post up some weights as long as you stop calling them Oscom 
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Current-YB7, Gilera Nordwest, Triumph Tiger 800, Z650, MV F3 800
Previous-Nico Bakker, Moto-Morini 3 1/2 sport |
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2bims
Joined: 03 Apr 2010
Posts: 7308
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| Posted: Fri Jan 10, 2020 5:32 pm Post subject: Re: OSCAM!!! |
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| YBevo wrote: |
| I'll post up some weights as long as you stop calling them Oscom |
????….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: 7308
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YBevo
Joined: 02 Apr 2012
Posts: 15
Location: Aberdeen
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| Posted: Fri Jan 10, 2020 8:29 pm Post subject: |
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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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Current-YB7, Gilera Nordwest, Triumph Tiger 800, Z650, MV F3 800
Previous-Nico Bakker, Moto-Morini 3 1/2 sport |
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welshlamb
Joined: 09 Mar 2011
Posts: 592
Location: South Wales , Nr. Abergavenny
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| Posted: Thu Feb 27, 2020 3:39 pm Post subject: |
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| 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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Not as many bikes as I would like and already too many to keep up with! |
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Evilchicken0
Joined: 12 May 2010
Posts: 2996
Location: London
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| Posted: Fri Feb 28, 2020 8:37 pm Post subject: |
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| 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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Don't read everything you believe |
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welshlamb
Joined: 09 Mar 2011
Posts: 592
Location: South Wales , Nr. Abergavenny
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| Posted: Thu May 07, 2020 6:32 pm Post subject: |
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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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Not as many bikes as I would like and already too many to keep up with! |
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Bud977
Joined: 03 Mar 2013
Posts: 525
Location: Sydney
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| Posted: Thu May 07, 2020 10:49 pm Post subject: |
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| 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
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| Posted: Thu Feb 11, 2021 9:50 pm Post subject: |
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| 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: 7308
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| Posted: Fri Feb 12, 2021 9:27 am Post subject: |
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| 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
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| Posted: Fri Feb 12, 2021 9:33 am Post subject: |
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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  |
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