Small block bevel drive - temperatures |
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Simmoto
Senior Member Joined: 29 Jul 2017 Location: Aberdeenshire Status: Offline Points: 261 |
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Moly, who knows? But that 85/140 is like treale when cold so I figure a squirt of Moly cant hurt.
Cheers
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Bugsy
Falcone Joined: 08 Oct 2018 Location: N Status: Offline Points: 66 |
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Ok Simmoto, help me here please - what form is the moly in?
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Motty
Senior Member Joined: 03 Jun 2015 Location: South England Status: Offline Points: 269 |
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The stuff I used comes in a tube
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It’s more fun to try to ride a slow bike fast .....
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nab301
Senior Member Joined: 29 Oct 2017 Location: Dublin Ireland Status: Offline Points: 443 |
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I use Eurol 75w140 LS , no additives. in the bevel box.
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Nigel
Keep smiling , it makes people wonder what you've been up to! '19 CB125F, '18 DL250 SUZUKI V STROM,'99 Bmw R1100S, '03Bullet 65 500, '93 MZ301 Saxon fun (offroad) |
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nab301
Senior Member Joined: 29 Oct 2017 Location: Dublin Ireland Status: Offline Points: 443 |
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Damn , does that mean I have to go and buy a cheap one too?....
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Nigel
Keep smiling , it makes people wonder what you've been up to! '19 CB125F, '18 DL250 SUZUKI V STROM,'99 Bmw R1100S, '03Bullet 65 500, '93 MZ301 Saxon fun (offroad) |
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Bugsy
Falcone Joined: 08 Oct 2018 Location: N Status: Offline Points: 66 |
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Ahh, thanks, a face to the Moly name.
Blimey, Eurol make a few gear oils don't they? What do you pick for the gearbox then Nigel?
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Yep ended up using 85/140 + moly (from a tube as above) in my 850 big block. I did notice a difference in temperature of the FD casing after a run, luke warm vs (previously) too hot to touch. |
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"Chicken nuggets don't dance on a Tuesday."
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Simmoto
Senior Member Joined: 29 Jul 2017 Location: Aberdeenshire Status: Offline Points: 261 |
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i just use the stuff on ebay, about £4 for 20cc which does two smallblock changes
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nab301
Senior Member Joined: 29 Oct 2017 Location: Dublin Ireland Status: Offline Points: 443 |
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75w 90 Fultrasyn from their advisor. I use the same in my Bm although it also uses it in the bevel box . I haven't always used the fully synthetic in the Bm and at just under 100k miles the bevel box became rough and noisy . ( so I'm not sugggesting it's better or worse than anything else just that it's easily available locally from a relative at the right price...) I think its the front bearing but I replaced the complete unit with a spare I had and haven't stripped the old one yet.
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Nigel
Keep smiling , it makes people wonder what you've been up to! '19 CB125F, '18 DL250 SUZUKI V STROM,'99 Bmw R1100S, '03Bullet 65 500, '93 MZ301 Saxon fun (offroad) |
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Adam
Senior Member Joined: 19 Jul 2017 Location: UK Status: Offline Points: 127 |
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After approximately 10 miles riding home this evening, air temperature at 15`C I checked the bevel drive and it was about the same temperature as a hot cup of tea, which I had in my other hand for reference. Recommended oil in drive.
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Bugsy
Falcone Joined: 08 Oct 2018 Location: N Status: Offline Points: 66 |
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Thanks Adam - no moly by the sound of it...
Any one else with Nigel and using 75W 90 in the gearbox? Any comment on gear change quality?
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Simmoto
Senior Member Joined: 29 Jul 2017 Location: Aberdeenshire Status: Offline Points: 261 |
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Intetesting to hear the temps people are getting, its quite difficult to generalise on what it means as there are a couple of heat sources; friction from the brakes and friction from the bevel and pinion gears both of which will vary depending on the ride and rider. Unless anything is really glowing hot I doubt any of it is an issue; the role of the oil in the box is to lubricate and also to conduct heat away.
Im off to look for a cheap thermometer for the hell of it anyway |
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nab301
Senior Member Joined: 29 Oct 2017 Location: Dublin Ireland Status: Offline Points: 443 |
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Just for comparison I checked the temps on my Bmw R11s
Slightly warmer air temps than original Breva test , did a round trip of approx 100 miles Bevel box 30 deg c Brake Discs, less than 20deg c Exhaust headers near head 110 deg c Tyres .... Metz Z6 24 deg c... So generally way cooler than the Breva.
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Nigel
Keep smiling , it makes people wonder what you've been up to! '19 CB125F, '18 DL250 SUZUKI V STROM,'99 Bmw R1100S, '03Bullet 65 500, '93 MZ301 Saxon fun (offroad) |
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Bugsy
Falcone Joined: 08 Oct 2018 Location: N Status: Offline Points: 66 |
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Makes sense of the Breva bevel oil requirement 85W 140 I suppose.
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