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A UK Site Dedicated To The Suzuki C800, VL800, VX800, M800, VZ800, VS800, C50, M50 Model Intruder / Boulevard / Marauder
 
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 Sachs Roadster 800 porn

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adilmon
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PostSubject: Sachs Roadster 800 porn   Fri Mar 02, 2012 5:06 am

(Never stared at my own bike for so long)





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Mr Intruder
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PostSubject: Re: Sachs Roadster 800 porn   Fri Mar 02, 2012 8:40 am

She's a real good looking bike
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Badger
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PostSubject: Re: Sachs Roadster 800 porn   Fri Mar 02, 2012 3:02 pm

That's a nice bike. My mate's wife has a Sachs based chop.
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Twojobmick
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PostSubject: Re: Sachs Roadster 800 porn   Sat Mar 03, 2012 8:02 am

Proper nice that bud
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captain crash
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 04, 2012 12:30 pm

Love the bike aprt from the way they have designed the seat to fall so low by the suspension. Apart from that it is lovely
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alfie92
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 04, 2012 3:59 pm

Nice looking machine
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scotland warrior
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PostSubject: Re: Sachs Roadster 800 porn   Mon Mar 05, 2012 6:50 pm

I must be on a different planet what the hell is a Sachs Roadster 800 is that the new intruder:lol!:
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Bluesman
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PostSubject: Re: Sachs Roadster 800 porn   Mon Mar 05, 2012 8:35 pm

Nice bike mate! Why is it that everone's bike looks cleaner than mine
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Tue Mar 06, 2012 4:40 am

Cheers,
Took her for a spin today & getting use to the agile cruiser style of riding. I can myself having a lot of fun AND keeping my license this season

Had a closer look at the engine too & "Suzuki Japan" is in relief at the base of the front cylinder
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CycleBiker
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PostSubject: Re: Sachs Roadster 800 porn   Tue Mar 06, 2012 2:51 pm

It's a Suzuki VX800 redone by Sachs of Austria.

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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 7:51 am

I think the VX800 was the first suzuki to use the 805cc engine (bored out intruder 750 lump), then other models subsequently adopted it '91 onwards

Are there many VX800 owners on here?
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Mr Intruder
Suzuki800.com Founder ... & ... Senior Administrator
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 10:16 am

adilmon wrote:
I think the VX800 was the first suzuki to use the 805cc engine (bored out intruder 750 lump), then other models subsequently adopted it '91 onwards
Although the engine boasts an identical 83.0 x 74.4mm bore and stroke, when Suzuki released of the Volusia in 2001 they pumped up the power plant's
torque and low rpm power. Other changes were also made to the engine.
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 11:37 am

Interesting. I've booked her on a dyno this weekend...

I wonder what the small chome pipe near the exhaust header is for?


Last edited by adilmon on Wed Mar 07, 2012 11:47 am; edited 1 time in total
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Mr Intruder
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 11:45 am

MCN have them (Bog standard) at 57bhp (others at 58bhp) with 52lb ft.

What modifications have you done to it to warrant paying out for a Dyno?
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 11:50 am

There's a slight popping when shutting the throttle quickly, so i'd like to see if she is running rich (maybe previous owner tinkered with jets). Also, the dyno I've booked is having a free dyno day Saturday
http://www.cmwmotorcycles.com/contact.html
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Mr Intruder
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 11:56 am

Happy days on the Dyno then, that great
I hate it when people mess with carbs when they don't know what they are doing but these bikes do pop and burble a little on deceleration! So hopefully alls good.
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CycleBiker
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 7:03 pm

Don't expect too much from the Dyno - these bikes are factory tuned for mid-range torque. Here is the rear wheel dyno graph for a M50 from MCN (Motorcycle Consumer News):

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Mr Intruder
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 07, 2012 7:09 pm

Ah now that all adds up with why I change gear on the run at about 6500 rpm
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 11, 2012 11:43 am

Righto. Dyno says 43.05 Ft/lb at 4128 rpm & 37.17 bhp at 6484rpm.

I asked why he didn't take the revs all the way to 7500 & the fella at the garage told me there a was a little clutch slippage that prevented getting true figures at max throttle. I checked my paperwork & the recent oil change was semi-synth oil, instead of regular SG mineral oil. So time to tinker...

I'll upload a the dyno graph soon
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captain crash
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 11, 2012 12:18 pm

Thats a real shame especially when the dyno was free. The semi synthetic oil will not make a clutch slip any more than any oil. the only real criterea is that it is an oil suitable for a wet clutch. you can not use an oil that has the following stamp



The oil must be "JASO-MA standard"
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fat intruder
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 11, 2012 10:12 pm

the results were not what you were hopeing for i take it is the bike standard . Interesting though if you fix the clutch slipping then book it in agian and get an accurate dyno reading then tamper with bike to make it better at laest youl know if your tampering has worked if dynoed a third time good luk and let us know how it goes if you do it . was thinking of getting mine done as a mate of mine said theres a place not to far from were i live that do it for free on sertain days if you can get a space
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Mon Mar 12, 2012 8:53 am

I've been reading up on oils:
-owners manual says mineral oil, that's fine
-same manual says SG or higher, which is a bit of an issue, since later environmental concerns have lowered the Zinc based anti wear additives & replaced them with things like molybendium & PTFE, which dont work well with wet clutches
-JASO rating is an excellent standard, since it's the only one that has a HTHS (high temperature high stress) minimum performance criteria.

I've not noticed the clutch slipping on the road because torque is plentiful & I'm kinder to the throttle than a dyno operator. If the dino juice doesn't sort it, I'm happy to replace the clutch plates & renew the springs
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Mon Mar 12, 2012 9:08 am

So, Here's the base line dyno

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CycleBiker
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PostSubject: Re: Sachs Roadster 800 porn   Mon Mar 12, 2012 3:18 pm

Here's a scaled comparison with the MCN dyno:

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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Wed Mar 14, 2012 7:49 pm

Righto, got the oil (Castrol Act->evo) which is mineral 10w40 SG, JASO MA2 ready to change it tomorrow. Today I took care of the valve clearance check & thankfully none needed adjusting (0.08-0.13mm in&ex)
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Sun Mar 18, 2012 5:56 pm

So, Bad News 1st
-oil change didn't make a huge difference to clutch slip
-discovered there's a relatively common issue with Intruder's clutch springs weakening/relaxing

Good News
-At least I now have dispelled the mineral/synthetic oil concerns. So long as it's 10w40, SG or later & JASO MA, then it doesn't matter. I'm tempted towards the syth, since I understand some of the engine's hypoid gears are tough on oil shearing
-I get to open her up & tinker. Will be able to confirm if she got the slipper clutch of the vx800, or regular clutch of other models
-EBC makes heavy duty spring kits & painlessly ordered the vs800 springs, clutch cover gasket & exhaust washer from www.wemoto.com
-I stumbled across the 12,000km Service bulletin to grease the drive shaft splines & final drive ring gear (suzuki super grease "A" is just regular Hi-temp bearing grease). Big tub of Lithium Moly grease in hand
-I'm thankful sorting this out is within my spannering ability & the only special tool is a torque wrench

(sorry I know I should've posted this on technical/service section, but figured there are so few people with this bike I keep it easy to find. I intend to post up in the proper sections from now on & just put links here)
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adilmon
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PostSubject: Re: Sachs Roadster 800 porn   Thu Aug 02, 2018 9:19 am

So, reviving a long lost thread...
I still have the sachs, just brought the clutch spring and doing a light restoration as the rear shocks and some chrome bolts could look better. Also bought some tan material to recover the seat.


This site has been great for taking the hassle out of looking for kit
http://www.sachs-biker.de/ and they had a good recommendation

"The original Suzuki clutch springs of the Sachs Roadster 800 & Sachs b-805 are 35mm long; suitable for motors with a torque of 50-60 Nm. As a result, the Sachs Roadster 800 & Sachs b-805, with a torque of 70 Nm, will eventually slip-slip. The Sachs-Biker IG recommends alternative compression springs of the Suzuki GSX1100F (88-92) for clutch slipping in addition to the exclusive use of mineral oil; suitable for motors with a torque of 100 Nm. "
I also purchased a new clutchpack. Interesting that the community got together (mostly in germany) to address a common problem of clutch slippage. 
Apparently as of 2018 there are only 21 on the road in the uk from a peak of only 74. Hope to make that 22 as she's been off the road for a year or 2
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peardrop3
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PostSubject: Re: Sachs Roadster 800 porn   Thu Aug 02, 2018 3:28 pm

Great to hear that you are near to be putting it back on the road! Also good to see that you are still in the group after all this time! Welcome back!!!
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